155 changed files with 3016 additions and 7573 deletions
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@ -38,4 +38,3 @@ python:
   install:
   - method: pip
     path: .
   - requirements: docs/requirements.txt
--- a/README.rst
+++ b/README.rst
@ -7,8 +7,7 @@ Description
 ===========
 *Mia! Accounting* is an accounting module for Flask_ applications.
-It is designed both for mobile and desktop environments.  It
+It implements `double-entry bookkeeping`_, and generates the following
 implements `double-entry bookkeeping`_.  It generates the following
 accounting reports:
 * Trial balance
@ -18,17 +17,46 @@ accounting reports:
 In addition, *Mia! Accounting* tracks offsets for unpaid payables and
 receivables.
 You may try the `Mia! Accounting live demonstration`_.
 Live Demonstration and Test Site
 ================================
-There is a `live demonstration`_ for *Mia! Accounting*.  It runs the
+History
-same code as the `test site`_ in the `source distribution`_.  It is
+=======
 the simplest website that works with *Mia! Accounting*.  It is also
 used in the automatic tests.
-If you do not have a running Flask application or do not know how to
+I created my own private accounting application in Perl_/mod_perl_ in
-start one, you may start with the test site.
+2007, as part of my personal website.  The first revision was made
 using Perl/Mojolicious_ in 2019, with the aim of making it
 mobile-friendly using Bootstrap_, and with modern back-end and
 front-end technologies such as jQuery.
 The second revision was done in Python_/Django_ in 2020, as I was
 looking to change my career from PHP_/Laravel_ to Python, but lacked
 experience with large Python projects.  I wanted to add something new
 to my portfolio and decided to work on the somewhat outdated
 Mojolicious project.
 Despite having no prior experience with Django, I spent two months
 working late nights to create the `Mia! Account Django application`_.
 It took me another 1.5 months to make it an independent module, which
 I later released as an open source project.
 The application worked nicely for my household bookkeeping for two
 years.  However, new demands arose over time, especially with tracking
 payables and receivables, which became difficult with credit card
 payments.  This was critical `during the pandemic`_ as more payments
 were made online with credit cards.
 The biggest issue I encountered was with Django's MVT framework.  Due
 to my lack of experience with Django during development, I ended up
 with mixed function-based view controllers and class-based views.  It
 became very difficult to track whether problems originated from my
 overridden methods or not-overridden methods, or from the Django base
 views themselves.  I did not fully understand how everything worked.
 Therefore, I decided to turn to microframeworks like Flask.   After
 working with modularized Flask and FastAPI_ applications for two
 years, I returned to the project and wrote its third revision using
 Flask in 2023.
 Installation
@ -40,26 +68,156 @@ Install *Mia! Accounting* with ``pip``:
    pip install mia-accounting
-You may also download from the `PyPI project page`_ or the
+You may also download the from the `PyPI project page`_ or the
 `release page`_ on the `Git repository`_.
 Prerequisites
 =============
 You need a running Flask application with database user login.
 The primary key of the user data model must be integer.
 The following front-end JavaScript libraries must be loaded.  You may
 download it locally or use CDN_.
 * Bootstrap_ 5.2.3 or above
 * FontAwesome_ 6.2.1 or above
 * `Decimal.js`_ 6.4.3 or above
 * `Tempus-Dominus`_ 6.4.3 or above
 Configuration
 =============
 You need to pass the Flask *app* and an implementation of
 ``UserUtilityInterface`` to the ``init_app`` function.
 ``UserUtilityInterface`` contains everything *Mia! Accounting* needs.
 The following is an example configuration for *Mia! Accounting*.
 ::
    from flask import Response, redirect
    from .auth import current_user()
    from .modules import User
    def create_app(test_config=None) -> Flask:
        app: Flask = Flask(__name__)
        ... (Configuration of SQLAlchemy, CSRF, Babel_JS, ... etc) ...
        import accounting
        class UserUtilities(accounting.UserUtilityInterface[User]):
            def can_view(self) -> bool:
                return True
            def can_edit(self) -> bool:
                return "editor" in current_user().roles
            def can_admin(self) -> bool:
                return current_user().is_admin
            def unauthorized(self) -> Response:
                return redirect("/login")
            @property
            def cls(self) -> t.Type[User]:
                return User
            @property
            def pk_column(self) -> Column:
                return User.id
            @property
            def current_user(self) -> User | None:
                return current_user()
            def get_by_username(self, username: str) -> User | None:
                return User.query.filter(User.username == username).first()
            def get_pk(self, user: User) -> int:
                return user.id
        accounting.init_app(app, UserUtils())
        ... (Any other configuration) ...
        return app
 Database Initialization
 =======================
 After the configuration, you need to run
 `flask_sqlalchemy.SQLAlchemy.create_all`_ to create the
 database tables that *Mia! Accounting* uses.
 *Mia! Accounting* adds three console commands:
 * ``accounting-init-base``
 * ``accounting-init-accounts``
 * ``accounting-init-currencies``
 You need to run ``accounting-init-base`` first, and then the other
 two commands.
 ::
    % flask --app myapp accounting-init-base
    % flask --app myapp accounting-init-accounts
    % flask --app myapp accounting-init-currencies
 Navigation Menu
 ===============
 Include the navigation menu in the `Bootstrap navigation bar`_ in your
 base template:
 ::
    <nav class="navbar navbar-expand-lg bg-body-tertiary bg-dark navbar-dark">
      <div class="container-fluid">
        ...
        <div id="collapsible-navbar" class="collapse navbar-collapse">
          <ul class="navbar-nav me-auto mb-2 mb-lg-0">
            ...
            {% include "accounting/include/nav.html" %}
            ...
          </ul>
          ...
        </div>
      </div>
    </nav>
 Check your Flask application and see how it works.
 Test Site and Live Demonstration
 ================================
 You may find a working example in the `test site`_ in the
 `source distribution`_.  It is the simplest website that works with
 *Mia! Accounting*.  It is used in the automatic tests.  It is the same
 code run for `live demonstration`_.
 If you do not have a running Flask application, you may start with the
 test site.
 Documentation
 =============
 Refer to the `documentation on Read the Docs`_.
 Change Log
 ==========
 Refer to the `change log`_.
 Copyright
 =========
- Copyright (c) 2023-2024 imacat.
+ Copyright (c) 2023 imacat.
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@ -84,11 +242,29 @@ Authors
 .. _Flask: https://flask.palletsprojects.com
 .. _double-entry bookkeeping: https://en.wikipedia.org/wiki/Double-entry_bookkeeping
-.. _live demonstration: https://accounting.imacat.idv.tw
+.. _Mia! Accounting live demonstration: https://accounting.imacat.idv.tw/
-.. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
+.. _Perl: https://www.perl.org
-.. _source distribution: https://pypi.org/project/mia-accounting/#files
+.. _mod_perl: https://perl.apache.org
 .. _Mojolicious: https://mojolicious.org
 .. _Bootstrap: https://getbootstrap.com
 .. _jQuery: https://jquery.com
 .. _Python: https://www.python.org
 .. _Django: https://www.djangoproject.com
 .. _PHP: https://www.php.net
 .. _Laravel: https://laravel.com
 .. _Mia! Account Django application: https://github.com/imacat/mia-accounting-django
 .. _during the pandemic: https://en.wikipedia.org/wiki/COVID-19_pandemic
 .. _FastAPI: https://fastapi.tiangolo.com
 .. _FontAwesome: https://fontawesome.com
 .. _Decimal.js: https://mikemcl.github.io/decimal.js
 .. _Tempus-Dominus: https://getdatepicker.com
 .. _CDN: https://en.wikipedia.org/wiki/Content_delivery_network
 .. _PyPI project page: https://pypi.org/project/mia-accounting
 .. _release page: https://github.com/imacat/mia-accounting/releases
 .. _Git repository: https://github.com/imacat/mia-accounting
 .. _flask_sqlalchemy.SQLAlchemy.create_all: https://flask-sqlalchemy.palletsprojects.com/en/3.0.x/api/#flask_sqlalchemy.SQLAlchemy.create_all
 .. _Bootstrap navigation bar: https://getbootstrap.com/docs/5.3/components/navbar/
 .. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
 .. _source distribution: https://pypi.org/project/mia-accounting/#files
 .. _live demonstration: https://accounting.imacat.idv.tw
 .. _documentation on Read the Docs: https://mia-accounting.readthedocs.io
 .. _change log: https://mia-accounting.readthedocs.io/en/latest/changelog.html
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@ -1 +0,0 @@
 sphinx_rtd_theme
--- a/docs/source/accounting.journal_entry.utils.rst
+++ b/docs/source/accounting.journal_entry.utils.rst
@ -20,6 +20,14 @@ accounting.journal\_entry.utils.description\_editor module
   :undoc-members:
   :show-inheritance:
 accounting.journal\_entry.utils.offset\_alias module
 ----------------------------------------------------
 .. automodule:: accounting.journal_entry.utils.offset_alias
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.journal\_entry.utils.operators module
 ------------------------------------------------
--- a/docs/source/accounting.report.reports.rst
+++ b/docs/source/accounting.report.reports.rst
@ -60,38 +60,6 @@ accounting.report.reports.trial\_balance module
   :undoc-members:
   :show-inheritance:
 accounting.report.reports.unapplied module
 ------------------------------------------
 .. automodule:: accounting.report.reports.unapplied
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.reports.unapplied\_accounts module
 ----------------------------------------------------
 .. automodule:: accounting.report.reports.unapplied_accounts
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.reports.unmatched module
 ------------------------------------------
 .. automodule:: accounting.report.reports.unmatched
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.reports.unmatched\_accounts module
 ----------------------------------------------------
 .. automodule:: accounting.report.reports.unmatched_accounts
   :members:
   :undoc-members:
   :show-inheritance:
 Module contents
 ---------------
--- a/docs/source/accounting.report.utils.rst
+++ b/docs/source/accounting.report.utils.rst
@ -28,14 +28,6 @@ accounting.report.utils.csv\_export module
   :undoc-members:
   :show-inheritance:
 accounting.report.utils.offset\_matcher module
 ----------------------------------------------
 .. automodule:: accounting.report.utils.offset_matcher
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.utils.option\_link module
 -------------------------------------------
@ -60,22 +52,6 @@ accounting.report.utils.report\_type module
   :undoc-members:
   :show-inheritance:
 accounting.report.utils.unapplied module
 ----------------------------------------
 .. automodule:: accounting.report.utils.unapplied
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.utils.unmatched module
 ----------------------------------------
 .. automodule:: accounting.report.utils.unmatched
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.report.utils.urls module
 -----------------------------------
--- a/docs/source/accounting.rst
+++ b/docs/source/accounting.rst
@ -18,14 +18,6 @@ Subpackages
 Submodules
 ----------
 accounting.commands module
 --------------------------
 .. automodule:: accounting.commands
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.forms module
 -----------------------
--- a/docs/source/accounting.utils.rst
+++ b/docs/source/accounting.utils.rst
@ -44,14 +44,6 @@ accounting.utils.next\_uri module
   :undoc-members:
   :show-inheritance:
 accounting.utils.offset\_alias module
 -------------------------------------
 .. automodule:: accounting.utils.offset_alias
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.utils.options module
 -------------------------------
@ -100,14 +92,6 @@ accounting.utils.strip\_text module
   :undoc-members:
   :show-inheritance:
 accounting.utils.title\_case module
 -----------------------------------
 .. automodule:: accounting.utils.title_case
   :members:
   :undoc-members:
   :show-inheritance:
 accounting.utils.user module
 ----------------------------
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@ -1,455 +0,0 @@
 Change Log
 ==========
 Version 1.6.0
 --------------
 Released 2024/6/4
 * Updated Python version to 3.12.
 * Revised the calculation of "today" to use the client's timezone instead of
  the server's timezone.
 * Updated the Bootstrap, FontAwesome, and Tempus-Dominus versions in the test
  site.
 Version 1.5.11
 --------------
 Released 2023/12/26
 Bug fix.
 * Refined to enable the selection of the 3351-001 Accumulated Profit or Loss
  account.
 Version 1.5.10
 --------------
 Released 2023/11/28
 Bug fix.
 * Fixed the form validator to enable the selection of Accumulated Profit or
  Loss accounts other than 3351-001.
 Version 1.5.9
 -------------
 Released 2023/11/28
 Bug fix.
 * Refined to enable the selection of Accumulated Profit or Loss accounts other
  than 3351-001, facilitating the consolidation of existing balances.
 Version 1.5.8
 -------------
 Released 2023/10/24
 Bug fix.
 * Fixed an icon in the detail of the cash receipt journal entry.
 Released at Jaipur, India on vacation.
 Version 1.5.7
 -------------
 Released 2023/7/29
 Revised account title capitalization to capitalize account titles
 upon initialization of base accounts, rather than when displaying
 the accounts.  This prevents the system from incorrectly
 capitalizing titles of user-added accounts.
 For existing installation, run the ``accounting-titleize`` console
 command to capitalize the existing account titles that were already
 initialized.
 Other fixes:
 * Added missing documentation to the global variables, class
  properties, and object properties.
 * Various minor fixes.
 Version 1.5.6
 -------------
 Released 2023/5/23
 Bug fixes.
 * Fixed the return URI of the creation forms to decode the next URI.
 * Fixed the unmatched offset list to use the encoded next URI.
 Version 1.5.5
 -------------
 Released 2023/5/23
 Security fixes.
 * Revised the next URI utilities to encode and decode the next URI
  preventing tampering with the next URI.
 * Added the integrity value of the CDN stylesheet links.
 * Various fixes.
 Version 1.5.4
 -------------
 Released 2023/5/18
 Security fixes.
 * Added safeguard to the next URI utilities, to prevent Cross-Site
  Scripting (XSS) attacks.
 * Applied the safe next URI utilities to the test site.
 * Added the ``SameSite`` and ``Secure`` flags to the session cookie
  of the test site.
 Version 1.5.3
 -------------
 Released 2023/4/30
 * Fixed the error of the net balance in the unmatched offset list.
 * Revised the original line item editor not to override the existing
  amount when the existing amount is less or equal to the net
  balance.
 Version 1.5.2
 -------------
 Released 2023/4/30
 * Fixed the error of the net balance in the unmatched offset list.
 Version 1.5.1
 -------------
 Released 2023/4/30
 * Fixed the error calling the old ``setEnableDescriptionAccount``
  method in the ``saveOriginalLineItem`` method of the JavaScript
  ``JournalEntryLineItemEditor`` class.
 Version 1.5.0
 -------------
 Released 2023/4/23
 * Updated to require ``SQLAlchemy >= 2``.
 * Added the change log.
 * Added the ``VERSION`` constant to the ``accounting`` module for
  the package version, and revised ``pyproject.toml`` and ``conf.py``
  to read the version from it.
 Version 1.4.1
 -------------
 Released 2023/4/22
 * Updated to allow editing the description of the journal entry line
  item with offsets or are offsetting to original line items.
 * Updated not to override the existing description of a journal entry
  line item after choosing the original line item to offset to.
 Version 1.4.0
 -------------
 Released 2023/4/18
 * Rewrote the unapplied original line items and unmatched offsets.
  * The unapplied original line items and unmatched offsets are both
    in the report submodule.  They can be filtered with currency and
    period now.
  * Show the unapplied original line items and unmatched offsets
    together, and added the accumulated balance in the unmatched
    offset list, for ease of reference.
 * Removed the account code from the journal entry detail and journal
  entry form for mobile devices.
 * Made the account options in the reports to be scrollable.
 Version 1.3.3
 -------------
 Released 2023/4/13
 Changed the sample data generation in the test site live demonstration
 from pre-recorded data to real-time generation, to avoid the problem
 with the start of months and weeks changed with the date of the
 import.
 Version 1.3.2
 -------------
 Released 2023/4/12
 Added the sample data generation and database reset on the test site
 for live demonstration.
 Version 1.3.1
 -------------
 Released 2023/4/11
 * Fixed the permission of the navigation menu of the unmatched offsets.
 * Revised the test site to be more accessible as the live demonstration.
 Version 1.3.0
 -------------
 Released 2023/4/11
 Added the ``accounting-init-db`` console command to replace all the
 other console commands to initialize the accounting database.  The
 test site does not work with previous versions (<1.3.0).
 Version 1.2.1
 -------------
 Released 2023/4/9
 Fixed the search result to allow full ``year/month/day``
 specification.
 Version 1.2.0
 -------------
 Released 2023/4/9
 * Simplified the URL of the default reports.
 * Fixed the crash with malformed Chinese translation.
 * Fixed the crash when downloading CSV data with non-US-ASCII
  filenames.
 Version 1.1.0
 -------------
 Released 2023/4/9
 * Added the unapplied original line item list, to track unpaid
  payables, unreceived receivables, assets, prepaids, refundable
  deposits, etc.
 * Added the offset matcher to match unapplied original line items
  with unmatched offsets.
 Version 1.0.1
 -------------
 Released 2023/4/6
 Documentation fixes.
 Version 1.0.0
 -------------
 Released 2023/4/6
 The first formal release in Flask.
 Added the documentation.
 Version 0.11.1 (Pre-release)
 ----------------------------
 Released 2023/4/5
 Removed the zero balances from the trial balance, the income
 statement, and the balance sheet.
 Version 0.11.0 (Pre-release)
 ----------------------------
 Released 2023/4/5
 * Renamed the project from ``mia-accounting-flask`` to
  ``mia-accounting``.
 * Updated the URL of the reports, as the default views of the
  accounting application.
 * Updated ``README``.
 * Various fixes.
 Version 0.10.0 (Pre-release)
 ----------------------------
 Released 2023/4/3
 * Added the unauthorized method to the ``UserUtilityInterface``
  interface to allow fine control to how to handle the case when the
  user has not logged in.
 * Revised the JavaScript description editor to respect the account
  that the user has confirmed or specifically selected.
 * Various fixes.
 Version 0.9.1 (Pre-release)
 ---------------------------
 Released 2023/3/24
 * A distinguishable look in the option detail than the option form.
 * A better look in the new journal entry forms when there is no line
  item yet.
 * Fixed the search in the original entry selector in the journal
  entry form to always do a partial match, to fix the problem that
  there is no match when typing is not finished yet.
 * Fixed the search in the original entry selector to search the net
  balance correctly.
 * Replaced the ``editor`` and ``editor2`` accounts with the ``admin``
  and ``editor`` accounts.
 * Various fixes.
 Version 0.9.0 (Pre-release)
 ---------------------------
 Released 2023/3/23
 Moved the settings from the ``.env`` file to the option table in the
 database that can be set and updated on the web interface.  Added the
 settings page to show and update the settings.
 Version 0.8.0 (Pre-release)
 ---------------------------
 Released 2023/3/22
 * Added the recurring transactions to the description editor.
 * Added prevention to delete database objects that are essential or
  referenced by others with foreign keys.
 * Various fixes on the visual layout.
 Version 0.7.0 (Pre-release)
 ---------------------------
 Released 2023/3/21
 * Renamed "transaction" to "journal entry", and "journal entry" to
  "journal entry line item".
 * Renamed ``summary`` to ``description``.
 * Updated tempus-dominus from version 6.2.10 to 6.4.3.
 * Fixed titles and capitalization.
 * Fixed to search case-insensitively.
 * Added favicon to the test site.
 * Fixed the navigation menu when there is no matching endpoint.
 * Various fixes.
 Version 0.6.0 (Pre-release)
 ---------------------------
 Released 2023/3/18
 * Added offset tracking to the journal entries in the payable and
  receivable accounts.
 * Renamed the ``is_offset_needed`` column to ``is_need_offset`` in
  the ``Account`` data model.
 Version 0.5.0 (Pre-release)
 ---------------------------
 Released 2023/3/10
 Added the accounting reports.
 Version 0.4.0 (Pre-release)
 ---------------------------
 Released 2023/3/1
 Added the transaction summary helper.
 Version 0.3.1 (Pre-release)
 ---------------------------
 Released 2023/2/28
 * Fixed the error that cannot select any account when adding new
  transactions.
 * Fixed the database error when adding new transactions.
 * Added the button to convert a cash income or cash expense
  transaction to a transfer transaction.
 Version 0.3.0 (Pre-release)
 ---------------------------
 Released 2023/2/27
 Added the transaction management.
 Version 0.2.0 (Pre-release)
 ---------------------------
 Released 2023/2/7
 * Added the currency management.
 * Changed the ``can_edit`` permission to at least require the user to
  log in first.
 * Changed the type hint of the ``current_user`` pseudo property of
  the ``AbstractUserUtils`` class to return ``None`` when the user
  has not logged in.
 Version 0.1.1 (Pre-release)
 ---------------------------
 Released 2023/2/3
 Finalized the account management, with tests and reordering.
 Version 0.1.0 (Pre-release)
 ---------------------------
 Released 2023/2/3
 Added the account management, and updated the API to initialize the
 accounting application.
 Version 0.0.0 (Pre-release)
 ---------------------------
 Released 2023/2/3
 Initial release with main account list, localization, pagination,
 query, permission, Sphinx documentation, and a test case based on a
 test demonstration site.
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@ -6,7 +6,6 @@ import os
 import sys
 sys.path.insert(0, os.path.abspath('../../src/'))
 import accounting
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
@ -14,7 +13,7 @@ import accounting
 project = 'Mia! Accounting'
 copyright = '2023, imacat'
 author = 'imacat'
-release = accounting.VERSION
+release = '1.0.0'
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
--- a/docs/source/examples.rst
+++ b/docs/source/examples.rst
@ -22,7 +22,7 @@ The following is an example configuration for *Mia! Accounting*.
        import accounting
-        class UserUtils(accounting.UserUtilityInterface[User]):
+        class UserUtilities(accounting.UserUtilityInterface[User]):
            def can_view(self) -> bool:
                return True
--- a/docs/source/history.rst
+++ b/docs/source/history.rst
@ -1,57 +0,0 @@
 History
 =======
 I created my own private accounting application in Perl_/mod_perl_ in
 2007, as part of my personal website.  The first revision was made
 using Perl/Mojolicious_ in 2019, with the aim of making it
 mobile-friendly using Bootstrap_, and with modern back-end and
 front-end technologies such as jQuery.
 The second revision was done in Python_/Django_ in 2020, as I was
 looking to change my career from PHP_/Laravel_ to Python, but lacked
 experience with large Python projects.  I needed something in my
 portfolio and decided to work on the somewhat outdated Mojolicious
 project.
 Despite having no prior experience with Django, I spent two months
 working late nights to create the `Mia! Accounting Django`_
 application.  It took me another 1.5 months to make it an independent
 module, which I later released as an open source project on PyPI.
 The application worked nicely for my household bookkeeping for two
 years.  However, new demands arose over time, especially with tracking
 payables and receivables.  This was critical `during the pandemic`_ as
 more payments were made online with credit cards.
 The biggest issue I encountered was with
 `Django's MTV architectural pattern`_.  Django takes over the control
 flow.  I had to override several parts of the `class-based views`_ for
 different but yet simple control flow logic.  In the end, it became
 very difficult to track whether things went wrong because I overrode
 something or because it just wouldn't work with the basic assumption
 of the class-based views.  By the time I realized it, it was too late
 for me to drop Django's MTV and rewrite everything from class-based
 views to function-based views.
 Therefore, I decided to turn to microframeworks_ like Flask_.   After
 working with modularized Flask and FastAPI_ applications for two
 years, I returned to the project and wrote its third revision using
 Flask in 2023.
 .. _Perl: https://www.perl.org
 .. _mod_perl: https://perl.apache.org
 .. _Mojolicious: https://mojolicious.org
 .. _Bootstrap: https://getbootstrap.com
 .. _jQuery: https://jquery.com
 .. _Python: https://www.python.org
 .. _Django: https://www.djangoproject.com
 .. _PHP: https://www.php.net
 .. _Laravel: https://laravel.com
 .. _Mia! Accounting Django: https://github.com/imacat/mia-accounting-django
 .. _during the pandemic: https://en.wikipedia.org/wiki/COVID-19_pandemic
 .. _FastAPI: https://fastapi.tiangolo.com
 .. _Django's MTV architectural pattern: https://docs.djangoproject.com/en/dev/faq/general/#django-appears-to-be-a-mvc-framework-but-you-call-the-controller-the-view-and-the-view-the-template-how-come-you-don-t-use-the-standard-names
 .. _class-based views: https://docs.djangoproject.com/en/4.2/topics/class-based-views/
 .. _microframeworks: https://en.wikipedia.org/wiki/Microframework
 .. _Flask: https://flask.palletsprojects.com
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@ -13,8 +13,6 @@ Welcome to Mia! Accounting's documentation!
   intro
   accounting
   examples
   history
   changelog
--- a/docs/source/intro.rst
+++ b/docs/source/intro.rst
@ -2,8 +2,7 @@ Introduction
 ============
 *Mia! Accounting* is an accounting module for Flask_ applications.
-It is designed both for mobile and desktop environments.  It
+It implements `double-entry bookkeeping`_, and generates the following
 implements `double-entry bookkeeping`_.  It generates the following
 accounting reports:
 * Trial balance
@ -13,17 +12,46 @@ accounting reports:
 In addition, *Mia! Accounting* tracks offsets for unpaid payables and
 receivables.
 You may try the `Mia! Accounting live demonstration`_.
 Live Demonstration and Test Site
 --------------------------------
-There is a `live demonstration`_ for *Mia! Accounting*.  It runs the
+History
-same code as the `test site`_ in the `source distribution`_.  It is
+-------
 the simplest website that works with *Mia! Accounting*.  It is also
 used in the automatic tests.
-If you do not have a running Flask application or do not know how to
+I created my own private accounting application in Perl_/mod_perl_ in
-start one, you may start with the test site.
+2007, as part of my personal website.  The first revision was made
 using Perl/Mojolicious_ in 2019, with the aim of making it
 mobile-friendly using Bootstrap_, and with modern back-end and
 front-end technologies such as jQuery.
 The second revision was done in Python_/Django_ in 2020, as I was
 looking to change my career from PHP_/Laravel_ to Python, but lacked
 experience with large Python projects.  I wanted to add something new
 to my portfolio and decided to work on the somewhat outdated
 Mojolicious project.
 Despite having no prior experience with Django, I spent two months
 working late nights to create the `Mia! Account Django application`_.
 It took me another 1.5 months to make it an independent module, which
 I later released as an open source project.
 The application worked nicely for my household bookkeeping for two
 years.  However, new demands arose over time, especially with tracking
 payables and receivables, which became difficult with credit card
 payments.  This was critical `during the pandemic`_ as more payments
 were made online with credit cards.
 The biggest issue I encountered was with Django's MVT framework.  Due
 to my lack of experience with Django during development, I ended up
 with mixed function-based view controllers and class-based views.  It
 became very difficult to track whether problems originated from my
 overridden methods or not-overridden methods, or from the Django base
 views themselves.  I did not fully understand how everything worked.
 Therefore, I decided to turn to microframeworks like Flask.   After
 working with modularized Flask and FastAPI_ applications for two
 years, I returned to the project and wrote its third revision using
 Flask in 2023.
 Installation
@ -35,7 +63,7 @@ Install *Mia! Accounting* with ``pip``:
    pip install mia-accounting
-You may also download from the `PyPI project page`_ or the
+You may also download the from the `PyPI project page`_ or the
 `release page`_ on the `Git repository`_.
@ -43,16 +71,15 @@ Prerequisites
 -------------
 You need a running Flask application with database user login.
-The primary key of the user data model must be integer.  You also
+The primary key of the user data model must be integer.
 need at least one user.
 The following front-end JavaScript libraries must be loaded.  You may
 download it locally or use CDN_.
 * Bootstrap_ 5.2.3 or above
-* FontAwesome_ 6.4.0 or above
+* FontAwesome_ 6.2.1 or above
-* `decimal.js`_ 10.4.3 or above, or `decimal.js-light`_ 2.5.1 or above.
+* `Decimal.js`_ 6.4.3 or above
-* `Tempus-Dominus`_ 6.7.7 or above
+* `Tempus-Dominus`_ 6.4.3 or above
 Configuration
@ -69,13 +96,24 @@ See an example in :ref:`example-userutils`.
 Database Initialization
 -----------------------
-After the configuration, run the ``accounting-init-db`` console
+After the configuration, you need to run
-command to initialize the accounting database.  You need to specify
+:py:meth:`flask_sqlalchemy.SQLAlchemy.create_all` to create the
-the username of a user as the data creator.
+database tables that *Mia! Accounting* uses.
 *Mia! Accounting* adds three console commands:
 * ``accounting-init-base``
 * ``accounting-init-accounts``
 * ``accounting-init-currencies``
 You need to run ``accounting-init-base`` first, and then the other
 two commands.
 ::
-    % flask --app myapp accounting-init-db -u username
+    % flask --app myapp accounting-init-base
    % flask --app myapp accounting-init-accounts
    % flask --app myapp accounting-init-currencies
 Navigation Menu
@ -103,18 +141,48 @@ base template:
 Check your Flask application and see how it works.
 Test Site and Live Demonstration
 --------------------------------
 You may find a working example in the `test site`_ in the
 `source distribution`_.  It is the simplest website that works with
 *Mia! Accounting*.  It is used in the automatic tests.  It is the same
 code run for `live demonstration`_.
 If you do not have a running Flask application, you may start with the
 test site.
 Documentation
 -------------
 Refer to the `documentation on Read the Docs`_.
 .. _Flask: https://flask.palletsprojects.com
 .. _double-entry bookkeeping: https://en.wikipedia.org/wiki/Double-entry_bookkeeping
-.. _live demonstration: https://accounting.imacat.idv.tw
+.. _Mia! Accounting live demonstration: https://accounting.imacat.idv.tw/
-.. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
+.. _Perl: https://www.perl.org
-.. _source distribution: https://pypi.org/project/mia-accounting/#files
+.. _mod_perl: https://perl.apache.org
 .. _Mojolicious: https://mojolicious.org
 .. _Bootstrap: https://getbootstrap.com
 .. _jQuery: https://jquery.com
 .. _Python: https://www.python.org
 .. _Django: https://www.djangoproject.com
 .. _PHP: https://www.php.net
 .. _Laravel: https://laravel.com
 .. _Mia! Account Django application: https://github.com/imacat/mia-accounting-django
 .. _during the pandemic: https://en.wikipedia.org/wiki/COVID-19_pandemic
 .. _FastAPI: https://fastapi.tiangolo.com
 .. _FontAwesome: https://fontawesome.com
 .. _Decimal.js: https://mikemcl.github.io/decimal.js
 .. _Tempus-Dominus: https://getdatepicker.com
 .. _CDN: https://en.wikipedia.org/wiki/Content_delivery_network
 .. _PyPI project page: https://pypi.org/project/mia-accounting
 .. _release page: https://github.com/imacat/mia-accounting/releases
 .. _Git repository: https://github.com/imacat/mia-accounting
 .. _CDN: https://en.wikipedia.org/wiki/Content_delivery_network
 .. _Bootstrap: https://getbootstrap.com
 .. _FontAwesome: https://fontawesome.com
 .. _decimal.js: https://mikemcl.github.io/decimal.js
 .. _decimal.js-light: https://mikemcl.github.io/decimal.js-light
 .. _Tempus-Dominus: https://getdatepicker.com
 .. _Bootstrap navigation bar: https://getbootstrap.com/docs/5.3/components/navbar/
 .. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
 .. _source distribution: https://pypi.org/project/mia-accounting/#files
 .. _live demonstration: https://accounting.imacat.idv.tw
 .. _documentation on Read the Docs: https://mia-accounting.readthedocs.io
--- a/pyproject.toml
+++ b/pyproject.toml
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2022/8/21
-#  Copyright (c) 2022-2024 imacat.
+#  Copyright (c) 2022-2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -17,10 +17,10 @@
 [project]
 name = "mia-accounting"
-dynamic = ["version"]
+version = "1.0.0"
 description = "A Flask accounting module."
 readme = "README.rst"
-requires-python = ">=3.12"
+requires-python = ">=3.11"
 authors = [
    {name = "imacat", email = "imacat@mail.imacat.idv.tw"},
 ]
@ -33,8 +33,7 @@ classifiers = [
    "Topic :: Office/Business :: Financial :: Accounting",
 ]
 dependencies = [
-    "Flask",
+    "flask",
    "SQLAlchemy >= 2",
    "Flask-SQLAlchemy",
    "Flask-WTF",
    "Flask-Babel >= 3",
@ -42,14 +41,14 @@ dependencies = [
 ]
 [project.optional-dependencies]
-devel = [
+test = [
    "unittest",
    "httpx",
    "OpenCC",
 ]
 [project.urls]
 "Documentation" = "https://mia-accounting.readthedocs.io"
 "Change Log" = "https://mia-accounting.readthedocs.io/en/latest/changelog.html"
 "Repository" = "https://github.com/imacat/mia-accounting"
 "Bug Tracker" = "https://github.com/imacat/mia-accounting/issues"
 "Demonstration" = "https://accounting.imacat.idv.tw"
@ -58,9 +57,6 @@ devel = [
 requires = ["setuptools>=42"]
 build-backend = "setuptools.build_meta"
 [tool.setuptools.dynamic]
 version = {attr = "accounting.VERSION"}
 [tool.setuptools.exclude-package-data]
 "*" = [
    "babel.cfg",
--- a/src/accounting/init.py
+++ b/src/accounting/init.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -24,8 +24,6 @@ from flask_sqlalchemy import SQLAlchemy
 from accounting.utils.user import UserUtilityInterface
 VERSION: str = "1.6.0"
 """The package version."""
 db: SQLAlchemy = SQLAlchemy()
 """The database instance."""
 data_dir: Path = Path(__file__).parent / "data"
@ -63,10 +61,6 @@ def init_app(app: Flask, user_utils: UserUtilityInterface,
    bp.add_app_template_global(default_currency_code,
                               "accounting_default_currency_code")
    from .commands import init_db_command, titleize_command
    app.cli.add_command(init_db_command)
    app.cli.add_command(titleize_command)
    from . import locale
    locale.init_app(app, bp)
--- a/src/accounting/account/init.py
+++ b/src/accounting/account/init.py
@ -19,8 +19,6 @@
 """
 from flask import Flask, Blueprint
 from .commands import init_accounts_command
 def init_app(app: Flask, bp: Blueprint) -> None:
    """Initialize the application.
@ -34,3 +32,6 @@ def init_app(app: Flask, bp: Blueprint) -> None:
    from .views import bp as account_bp
    bp.register_blueprint(account_bp, url_prefix="/accounts")
    from .commands import init_accounts_command
    app.cli.add_command(init_accounts_command)
--- a/src/accounting/account/commands.py
+++ b/src/accounting/account/commands.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/30
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -17,21 +17,44 @@
 """The console commands for the account management.
 """
 import os
 from secrets import randbelow
 from typing import Any
 import click
-import sqlalchemy as sa
+from flask.cli import with_appcontext
 from accounting import db
 from accounting.models import BaseAccount, Account, AccountL10n
-from accounting.utils.user import get_user_pk
+from accounting.utils.user import has_user, get_user_pk
-type AccountData = tuple[int, str, int, str, str, str, bool]
+AccountData = tuple[int, str, int, str, str, str, bool]
 """The format of the account data, as a list of (ID, base account code, number,
 English, Traditional Chinese, Simplified Chinese, is-need-offset) tuples."""
 def __validate_username(ctx: click.core.Context, param: click.core.Option,
                        value: str) -> str:
    """Validates the username for the click console command.
    :param ctx: The console command context.
    :param param: The console command option.
    :param value: The username.
    :raise click.BadParameter: When validation fails.
    :return: The username.
    """
    value = value.strip()
    if value == "":
        raise click.BadParameter("Username empty.")
    if not has_user(value):
        raise click.BadParameter(f"User {value} does not exist.")
    return value
@click.command("accounting-init-accounts")
@click.option("-u", "--username", metavar="USERNAME", prompt=True,
              help="The username.", callback=__validate_username,
              default=lambda: os.getlogin())
@with_appcontext
 def init_accounts_command(username: str) -> None:
    """Initializes the accounts."""
    creator_pk: int = get_user_pk(username)
@ -40,6 +63,8 @@ def init_accounts_command(username: str) -> None:
        .filter(db.func.length(BaseAccount.code) == 4)\
        .order_by(BaseAccount.code).all()
    if len(bases) == 0:
        click.echo("Please initialize the base accounts with "
                   "\"flask accounting-init-base\" first.")
        raise click.Abort
    existing: list[Account] = Account.query.all()
@ -48,6 +73,7 @@ def init_accounts_command(username: str) -> None:
    bases_to_add: list[BaseAccount] = [x for x in bases
                                       if x.code not in existing_base_code]
    if len(bases_to_add) == 0:
        click.echo("No more account to import.")
        return
    existing_id: set[int] = {x.id for x in existing}
@ -63,24 +89,14 @@ def init_accounts_command(username: str) -> None:
                existing_id.add(new_id)
                return new_id
-    data: list[dict[str, Any]] = []
+    data: list[AccountData] = []
    l10n_data: list[dict[str, Any]] = []
    for base in bases_to_add:
        l10n: dict[str, str] = {x.locale: x.title for x in base.l10n}
-        account_id: int = get_new_id()
+        is_need_offset: bool = __is_need_offset(base.code)
-        data.append({"id": account_id,
+        data.append((get_new_id(), base.code, 1, base.title_l10n,
-                     "base_code": base.code,
+                     l10n["zh_Hant"], l10n["zh_Hans"], is_need_offset))
-                     "no": 1,
+    __add_accounting_accounts(data, creator_pk)
-                     "title_l10n": base.title_l10n,
+    click.echo(F"{len(data)} added.  Accounting accounts initialized.")
                     "is_need_offset": __is_need_offset(base.code),
                     "created_by_id": creator_pk,
                     "updated_by_id": creator_pk})
        for locale in {"zh_Hant", "zh_Hans"}:
            l10n_data.append({"account_id": account_id,
                              "locale": locale,
                              "title": l10n[locale]})
    db.session.execute(sa.insert(Account), data)
    db.session.execute(sa.insert(AccountL10n), l10n_data)
 def __is_need_offset(base_code: str) -> bool:
@ -92,16 +108,42 @@ def __is_need_offset(base_code: str) -> bool:
    """
    # Assets
    if base_code[0] == "1":
-        if base_code[:3] in {"113", "114", "118", "184", "186"}:
+        if base_code[:3] in {"113", "114", "118", "184"}:
            return True
-        if base_code in {"1286", "1411", "1421", "1431", "1441", "1511",
+        if base_code in {"1411", "1421", "1431", "1441", "1511", "1521",
-                         "1521", "1581", "1611", "1851"}:
+                         "1581", "1611", "1851", ""}:
            return True
        return False
    # Liabilities
    if base_code[0] == "2":
-        if base_code in {"2111", "2114", "2284", "2293", "2861"}:
+        if base_code in {"2111", "2114", "2284", "2293"}:
            return False
        return True
    # Only assets and liabilities need offset
    return False
 def __add_accounting_accounts(data: list[AccountData], creator_pk: int)\
        -> None:
    """Adds the accounts.
    :param data: A list of (base code, number, title) tuples.
    :param creator_pk: The primary key of the creator.
    :return: None.
    """
    accounts: list[Account] = [Account(id=x[0],
                                       base_code=x[1],
                                       no=x[2],
                                       title_l10n=x[3],
                                       is_need_offset=x[6],
                                       created_by_id=creator_pk,
                                       updated_by_id=creator_pk)
                               for x in data]
    l10n: list[AccountL10n] = [AccountL10n(account_id=x[0],
                                           locale=y[0],
                                           title=y[1])
                               for x in data
                               for y in (("zh_Hant", x[4]), ("zh_Hans", x[5]))]
    db.session.bulk_save_objects(accounts)
    db.session.bulk_save_objects(l10n)
    db.session.commit()
--- a/src/accounting/account/forms.py
+++ b/src/accounting/account/forms.py
@ -168,9 +168,7 @@ class AccountReorderForm:
        :param base: The base account.
        """
        self.base: BaseAccount = base
        """The base account."""
        self.is_modified: bool = False
        """Whether the order is modified."""
    def save_order(self) -> None:
        """Saves the order of the account.
--- a/src/accounting/account/views.py
+++ b/src/accounting/account/views.py
@ -53,7 +53,7 @@ def list_accounts() -> str:
                           list=pagination.list, pagination=pagination)
-@bp.get("create", endpoint="create")
+@bp.get("/create", endpoint="create")
@has_permission(can_edit)
 def show_add_account_form() -> str:
    """Shows the form to add an account.
@ -70,7 +70,7 @@ def show_add_account_form() -> str:
                           form=form)
-@bp.post("store", endpoint="store")
+@bp.post("/store", endpoint="store")
@has_permission(can_edit)
 def add_account() -> redirect:
    """Adds an account.
@ -91,7 +91,7 @@ def add_account() -> redirect:
    return redirect(inherit_next(__get_detail_uri(account)))
-@bp.get("<account:account>", endpoint="detail")
+@bp.get("/<account:account>", endpoint="detail")
@has_permission(can_view)
 def show_account_detail(account: Account) -> str:
    """Shows the account detail.
@ -102,7 +102,7 @@ def show_account_detail(account: Account) -> str:
    return render_template("accounting/account/detail.html", obj=account)
-@bp.get("<account:account>/edit", endpoint="edit")
+@bp.get("/<account:account>/edit", endpoint="edit")
@has_permission(can_edit)
 def show_account_edit_form(account: Account) -> str:
    """Shows the form to edit an account.
@ -121,7 +121,7 @@ def show_account_edit_form(account: Account) -> str:
                           account=account, form=form)
-@bp.post("<account:account>/update", endpoint="update")
+@bp.post("/<account:account>/update", endpoint="update")
@has_permission(can_edit)
 def update_account(account: Account) -> redirect:
    """Updates an account.
@ -148,7 +148,7 @@ def update_account(account: Account) -> redirect:
    return redirect(inherit_next(__get_detail_uri(account)))
-@bp.post("<account:account>/delete", endpoint="delete")
+@bp.post("/<account:account>/delete", endpoint="delete")
@has_permission(can_edit)
 def delete_account(account: Account) -> redirect:
    """Deletes an account.
@ -167,7 +167,7 @@ def delete_account(account: Account) -> redirect:
    return redirect(or_next(__get_list_uri()))
-@bp.get("bases/<baseAccount:base>", endpoint="order")
+@bp.get("/bases/<baseAccount:base>", endpoint="order")
@has_permission(can_view)
 def show_account_order(base: BaseAccount) -> str:
    """Shows the order of the accounts under a same base account.
@ -178,7 +178,7 @@ def show_account_order(base: BaseAccount) -> str:
    return render_template("accounting/account/order.html", base=base)
-@bp.post("bases/<baseAccount:base>", endpoint="sort")
+@bp.post("/bases/<baseAccount:base>", endpoint="sort")
@has_permission(can_edit)
 def sort_accounts(base: BaseAccount) -> redirect:
    """Reorders the accounts under a base account.
--- a/src/accounting/base_account/init.py
+++ b/src/accounting/base_account/init.py
@ -19,8 +19,6 @@
 """
 from flask import Flask, Blueprint
 from .commands import init_base_accounts_command
 def init_app(app: Flask, bp: Blueprint) -> None:
    """Initialize the application.
@ -34,3 +32,6 @@ def init_app(app: Flask, bp: Blueprint) -> None:
    from .views import bp as base_account_bp
    bp.register_blueprint(base_account_bp, url_prefix="/base-accounts")
    from .commands import init_base_accounts_command
    app.cli.add_command(init_base_accounts_command)
--- a/src/accounting/base_account/commands.py
+++ b/src/accounting/base_account/commands.py
@ -19,28 +19,33 @@
 """
 import csv
-import sqlalchemy as sa
+import click
 from flask.cli import with_appcontext
 from accounting import data_dir
 from accounting import db
 from accounting.models import BaseAccount, BaseAccountL10n
 from accounting.utils.title_case import title_case
@click.command("accounting-init-base")
@with_appcontext
 def init_base_accounts_command() -> None:
    """Initializes the base accounts."""
    if BaseAccount.query.first() is not None:
-        return
+        click.echo("Base accounts already exist.")
        raise click.Abort
    with open(data_dir / "base_accounts.csv") as fp:
        data: list[dict[str, str]] = [x for x in csv.DictReader(fp)]
    account_data: list[dict[str, str]] = [{"code": x["code"],
-                                           "title_l10n": title_case(x["title"])}
+                                           "title_l10n": x["title"]}
                                          for x in data]
    locales: list[str] = [x[5:] for x in data[0] if x.startswith("l10n-")]
    l10n_data: list[dict[str, str]] = [{"account_code": x["code"],
                                        "locale": y,
                                        "title": x[f"l10n-{y}"]}
                                       for x in data for y in locales]
-    db.session.execute(sa.insert(BaseAccount), account_data)
+    db.session.bulk_insert_mappings(BaseAccount, account_data)
-    db.session.execute(sa.insert(BaseAccountL10n), l10n_data)
+    db.session.bulk_insert_mappings(BaseAccountL10n, l10n_data)
    db.session.commit()
    click.echo("Base accounts initialized.")
--- a/src/accounting/base_account/views.py
+++ b/src/accounting/base_account/views.py
@ -22,7 +22,6 @@ from flask import Blueprint, render_template
 from accounting.models import BaseAccount
 from accounting.utils.pagination import Pagination
 from accounting.utils.permission import has_permission, can_view
 from .queries import get_base_account_query
 bp: Blueprint = Blueprint("base-account", __name__)
 """The view blueprint for the base account management."""
@ -35,13 +34,14 @@ def list_accounts() -> str:
    :return: The account list.
    """
    from .queries import get_base_account_query
    accounts: list[BaseAccount] = get_base_account_query()
    pagination: Pagination = Pagination[BaseAccount](accounts)
    return render_template("accounting/base-account/list.html",
                           list=pagination.list, pagination=pagination)
-@bp.get("<baseAccount:account>", endpoint="detail")
+@bp.get("/<baseAccount:account>", endpoint="detail")
@has_permission(can_view)
 def show_account_detail(account: BaseAccount) -> str:
    """Shows the account detail.
--- a/src/accounting/commands.py
+++ b/src/accounting/commands.py
@ -1,94 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/10
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The console commands.
 """
 import os
 import click
 from flask.cli import with_appcontext
 from accounting import db
 from accounting.account import init_accounts_command
 from accounting.base_account import init_base_accounts_command
 from accounting.currency import init_currencies_command
 from accounting.models import BaseAccount, Account
 from accounting.utils.title_case import title_case
 from accounting.utils.user import has_user, get_user_pk
 import sqlalchemy as sa
 def __validate_username(ctx: click.core.Context, param: click.core.Option,
                        value: str) -> str:
    """Validates the username for the click console command.
    :param ctx: The console command context.
    :param param: The console command option.
    :param value: The username.
    :raise click.BadParameter: When validation fails.
    :return: The username.
    """
    value = value.strip()
    if value == "":
        raise click.BadParameter("Username empty.")
    if not has_user(value):
        raise click.BadParameter(f"User {value} does not exist.")
    return value
@click.command("accounting-init-db")
@click.option("-u", "--username", metavar="USERNAME", prompt=True,
              help="The username.", callback=__validate_username,
              default=lambda: os.getlogin())
@with_appcontext
 def init_db_command(username: str) -> None:
    """Initializes the accounting database."""
    db.create_all()
    init_base_accounts_command()
    init_accounts_command(username)
    init_currencies_command(username)
    db.session.commit()
    click.echo("Accounting database initialized.")
@click.command("accounting-titleize")
@click.option("-u", "--username", metavar="USERNAME", prompt=True,
              help="The username.", callback=__validate_username,
              default=lambda: os.getlogin())
@with_appcontext
 def titleize_command(username: str) -> None:
    """Capitalize the account titles."""
    updater_pk: int = get_user_pk(username)
    updated: int = 0
    for base in BaseAccount.query:
        new_title: str = title_case(base.title_l10n)
        if base.title_l10n != new_title:
            base.title_l10n = new_title
            updated = updated + 1
    for account in Account.query:
        if account.title_l10n.lower() == account.base.title_l10n.lower():
            new_title: str = title_case(account.title_l10n)
            if account.title_l10n != new_title:
                account.title_l10n = new_title
                account.updated_at = sa.func.now()
                account.updated_by_id = updater_pk
                updated = updated + 1
    if updated == 0:
        click.echo("All account titles were already capitalized.")
        return
    db.session.commit()
    click.echo(f"{updated} account titles capitalized.")
--- a/src/accounting/currency/init.py
+++ b/src/accounting/currency/init.py
@ -19,8 +19,6 @@
 """
 from flask import Flask, Blueprint
 from .commands import init_currencies_command
 def init_app(app: Flask, bp: Blueprint) -> None:
    """Initialize the application.
@ -35,3 +33,6 @@ def init_app(app: Flask, bp: Blueprint) -> None:
    from .views import bp as currency_bp, api_bp as currency_api_bp
    bp.register_blueprint(currency_bp, url_prefix="/currencies")
    bp.register_blueprint(currency_api_bp, url_prefix="/api/currencies")
    from .commands import init_currencies_command
    app.cli.add_command(init_currencies_command)
--- a/src/accounting/currency/commands.py
+++ b/src/accounting/currency/commands.py
@ -18,15 +18,42 @@
 """
 import csv
-from typing import Any
+import os
 import typing as t
-import sqlalchemy as sa
+import click
 from flask.cli import with_appcontext
 from accounting import db, data_dir
 from accounting.models import Currency, CurrencyL10n
-from accounting.utils.user import get_user_pk
+from accounting.utils.user import has_user, get_user_pk
 CurrencyData = tuple[str, str, str, str]
 def __validate_username(ctx: click.core.Context, param: click.core.Option,
                        value: str) -> str:
    """Validates the username for the click console command.
    :param ctx: The console command context.
    :param param: The console command option.
    :param value: The username.
    :raise click.BadParameter: When validation fails.
    :return: The username.
    """
    value = value.strip()
    if value == "":
        raise click.BadParameter("Username empty.")
    if not has_user(value):
        raise click.BadParameter(f"User {value} does not exist.")
    return value
@click.command("accounting-init-currencies")
@click.option("-u", "--username", metavar="USERNAME", prompt=True,
              help="The username.", callback=__validate_username,
              default=lambda: os.getlogin())
@with_appcontext
 def init_currencies_command(username: str) -> None:
    """Initializes the currencies."""
    existing_codes: set[str] = {x.code for x in Currency.query.all()}
@ -36,18 +63,22 @@ def init_currencies_command(username: str) -> None:
    to_add: list[dict[str, str]] = [x for x in data
                                    if x["code"] not in existing_codes]
    if len(to_add) == 0:
        click.echo("No more currency to add.")
        return
    creator_pk: int = get_user_pk(username)
-    currency_data: list[dict[str, Any]] = [{"code": x["code"],
+    currency_data: list[dict[str, t.Any]] = [{"code": x["code"],
-                                            "name_l10n": x["name"],
+                                              "name_l10n": x["name"],
-                                            "created_by_id": creator_pk,
+                                              "created_by_id": creator_pk,
-                                            "updated_by_id": creator_pk}
+                                              "updated_by_id": creator_pk}
-                                           for x in to_add]
+                                             for x in to_add]
    locales: list[str] = [x[5:] for x in to_add[0] if x.startswith("l10n-")]
    l10n_data: list[dict[str, str]] = [{"currency_code": x["code"],
                                        "locale": y,
                                        "name": x[f"l10n-{y}"]}
                                       for x in to_add for y in locales]
-    db.session.execute(sa.insert(Currency), currency_data)
+    db.session.bulk_insert_mappings(Currency, currency_data)
-    db.session.execute(sa.insert(CurrencyL10n), l10n_data)
+    db.session.bulk_insert_mappings(CurrencyL10n, l10n_data)
    db.session.commit()
    click.echo(F"{len(to_add)} added.  Currencies initialized.")
--- a/src/accounting/currency/views.py
+++ b/src/accounting/currency/views.py
@ -34,7 +34,6 @@ from accounting.utils.pagination import Pagination
 from accounting.utils.permission import has_permission, can_view, can_edit
 from accounting.utils.user import get_current_user_pk
 from .forms import CurrencyForm
 from .queries import get_currency_query
 bp: Blueprint = Blueprint("currency", __name__)
 """The view blueprint for the currency management."""
@ -49,13 +48,14 @@ def list_currencies() -> str:
    :return: The currency list.
    """
    from .queries import get_currency_query
    currencies: list[Currency] = get_currency_query()
    pagination: Pagination = Pagination[Currency](currencies)
    return render_template("accounting/currency/list.html",
                           list=pagination.list, pagination=pagination)
-@bp.get("create", endpoint="create")
+@bp.get("/create", endpoint="create")
@has_permission(can_edit)
 def show_add_currency_form() -> str:
    """Shows the form to add a currency.
@ -72,7 +72,7 @@ def show_add_currency_form() -> str:
                           form=form)
-@bp.post("store", endpoint="store")
+@bp.post("/store", endpoint="store")
@has_permission(can_edit)
 def add_currency() -> redirect:
    """Adds a currency.
@ -93,7 +93,7 @@ def add_currency() -> redirect:
    return redirect(inherit_next(__get_detail_uri(currency)))
-@bp.get("<currency:currency>", endpoint="detail")
+@bp.get("/<currency:currency>", endpoint="detail")
@has_permission(can_view)
 def show_currency_detail(currency: Currency) -> str:
    """Shows the currency detail.
@ -104,7 +104,7 @@ def show_currency_detail(currency: Currency) -> str:
    return render_template("accounting/currency/detail.html", obj=currency)
-@bp.get("<currency:currency>/edit", endpoint="edit")
+@bp.get("/<currency:currency>/edit", endpoint="edit")
@has_permission(can_edit)
 def show_currency_edit_form(currency: Currency) -> str:
    """Shows the form to edit a currency.
@ -123,7 +123,7 @@ def show_currency_edit_form(currency: Currency) -> str:
                           currency=currency, form=form)
-@bp.post("<currency:currency>/update", endpoint="update")
+@bp.post("/<currency:currency>/update", endpoint="update")
@has_permission(can_edit)
 def update_currency(currency: Currency) -> redirect:
    """Updates a currency.
@ -151,7 +151,7 @@ def update_currency(currency: Currency) -> redirect:
    return redirect(inherit_next(__get_detail_uri(currency)))
-@bp.post("<currency:currency>/delete", endpoint="delete")
+@bp.post("/<currency:currency>/delete", endpoint="delete")
@has_permission(can_edit)
 def delete_currency(currency: Currency) -> redirect:
    """Deletes a currency.
@ -169,7 +169,7 @@ def delete_currency(currency: Currency) -> redirect:
    return redirect(or_next(url_for("accounting.currency.list")))
-@api_bp.get("exists-code", endpoint="exists")
+@api_bp.get("/exists-code", endpoint="exists")
@has_permission(can_edit)
 def exists_code() -> dict[str, bool]:
    """Validates whether a currency code exists.
--- a/src/accounting/forms.py
+++ b/src/accounting/forms.py
@ -65,12 +65,12 @@ class IsDebitAccount:
        :param message: The error message.
        """
        self.__message: str | LazyString = message
        """The error message."""
    def __call__(self, form: FlaskForm, field: StringField) -> None:
        if field.data is None:
            return
        if re.match(r"^(?:[1235689]|7[5678])", field.data) \
                and not field.data.startswith("3351-") \
                and not field.data.startswith("3353-"):
            return
        raise ValidationError(self.__message)
@ -85,12 +85,12 @@ class IsCreditAccount:
        :param message: The error message.
        """
        self.__message: str | LazyString = message
        """The error message."""
    def __call__(self, form: FlaskForm, field: StringField) -> None:
        if field.data is None:
            return
        if re.match(r"^(?:[123489]|7[1234])", field.data) \
                and not field.data.startswith("3351-") \
                and not field.data.startswith("3353-"):
            return
        raise ValidationError(self.__message)
--- a/src/accounting/journal_entry/converters.py
+++ b/src/accounting/journal_entry/converters.py
@ -17,13 +17,13 @@
 """The path converters for the journal entry management.
 """
-import datetime as dt
+from datetime import date
 from flask import abort
 from sqlalchemy.orm import selectinload
 from werkzeug.routing import BaseConverter
-from accounting import db
+from accounting.models import JournalEntry, JournalEntryLineItem
 from accounting.models import JournalEntry
 from accounting.utils.journal_entry_types import JournalEntryType
@ -37,8 +37,13 @@ class JournalEntryConverter(BaseConverter):
        :param value: The journal entry ID.
        :return: The corresponding journal entry.
        """
-        journal_entry: JournalEntry | None \
+        journal_entry: JournalEntry | None = JournalEntry.query\
-            = db.session.get(JournalEntry, value)
+            .join(JournalEntryLineItem)\
            .filter(JournalEntry.id == value)\
            .options(selectinload(JournalEntry.line_items)
                     .selectinload(JournalEntryLineItem.offsets)
                     .selectinload(JournalEntryLineItem.journal_entry))\
            .first()
        if journal_entry is None:
            abort(404)
        return journal_entry
@ -82,18 +87,18 @@ class DateConverter(BaseConverter):
    """The date converter to convert the ISO date from and to the
    corresponding date in the routes."""
-    def to_python(self, value: str) -> dt.date:
+    def to_python(self, value: str) -> date:
        """Converts an ISO date to a date.
        :param value: The ISO date.
        :return: The corresponding date.
        """
        try:
-            return dt.date.fromisoformat(value)
+            return date.fromisoformat(value)
        except ValueError:
            abort(404)
-    def to_url(self, value: dt.date) -> str:
+    def to_url(self, value: date) -> str:
        """Converts a date to its ISO date.
        :param value: The date.
--- a/src/accounting/journal_entry/forms/currency.py
+++ b/src/accounting/journal_entry/forms/currency.py
@ -28,12 +28,14 @@ from wtforms.validators import DataRequired
 from accounting import db
 from accounting.forms import CurrencyExists
 from accounting.journal_entry.utils.offset_alias import offset_alias
 from accounting.locale import lazy_gettext
 from accounting.models import JournalEntryLineItem
-from accounting.utils.offset_alias import offset_alias
+from accounting.utils.cast import be
 from accounting.utils.strip_text import strip_text
 from .line_item import LineItemForm, CreditLineItemForm, DebitLineItemForm
 CURRENCY_REQUIRED: DataRequired = DataRequired(
    lazy_gettext("Please select the currency."))
 """The validator to check if the currency code is empty."""
@ -74,8 +76,8 @@ class KeepCurrencyWhenHavingOffset:
        offset: sa.Alias = offset_alias()
        original_line_items: list[JournalEntryLineItem]\
            = JournalEntryLineItem.query\
-            .join(offset,
+            .join(offset, be(JournalEntryLineItem.id
-                  JournalEntryLineItem.id == offset.c.original_line_item_id,
+                             == offset.c.original_line_item_id),
                  isouter=True)\
            .filter(JournalEntryLineItem.id
                    .in_({x.id.data for x in form.line_items
--- a/src/accounting/journal_entry/forms/journal_entry.py
+++ b/src/accounting/journal_entry/forms/journal_entry.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/2/18
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -18,8 +18,8 @@
 """
 import datetime as dt
 import typing as t
 from abc import ABC, abstractmethod
 from typing import Type
 import sqlalchemy as sa
 from flask_babel import LazyString
@ -29,13 +29,13 @@ from wtforms import DateField, FieldList, FormField, TextAreaField, \
 from wtforms.validators import DataRequired, ValidationError
 from accounting import db
 from accounting.journal_entry.utils.account_option import AccountOption
 from accounting.journal_entry.utils.description_editor import DescriptionEditor
 from accounting.journal_entry.utils.original_line_items import \
    get_selectable_original_line_items
 from accounting.locale import lazy_gettext
 from accounting.models import JournalEntry, Account, JournalEntryLineItem, \
    JournalEntryCurrency
 from accounting.journal_entry.utils.account_option import AccountOption
 from accounting.journal_entry.utils.original_line_items import \
    get_selectable_original_line_items
 from accounting.journal_entry.utils.description_editor import DescriptionEditor
 from accounting.utils.random_id import new_id
 from accounting.utils.strip_text import strip_multiline_text
 from accounting.utils.user import get_current_user_pk
@ -123,7 +123,7 @@ class JournalEntryForm(FlaskForm):
        super().__init__(*args, **kwargs)
        self.is_modified: bool = False
        """Whether the journal entry is modified during populate_obj()."""
-        self.collector: Type[LineItemCollector] = LineItemCollector
+        self.collector: t.Type[LineItemCollector] = LineItemCollector
        """The line item collector.  The default is the base abstract
        collector only to provide the correct type.  The subclass forms should
        provide their own collectors."""
@ -151,10 +151,11 @@ class JournalEntryForm(FlaskForm):
        is_new: bool = obj.id is None
        if is_new:
            obj.id = new_id(JournalEntry)
        self.date: DateField
        self.__set_date(obj, self.date.data)
        obj.note = self.note.data
-        collector_cls: Type[LineItemCollector] = self.collector
+        collector_cls: t.Type[LineItemCollector] = self.collector
        collector: collector_cls = collector_cls(self, obj)
        collector.collect()
@ -308,7 +309,11 @@ class JournalEntryForm(FlaskForm):
        return db.session.scalar(select)
-class LineItemCollector[T: JournalEntryForm](ABC):
+T = t.TypeVar("T", bound=JournalEntryForm)
 """A journal entry form variant."""
 class LineItemCollector(t.Generic[T], ABC):
    """The line item collector."""
    def __init__(self, form: T, obj: JournalEntry):
--- a/src/accounting/journal_entry/forms/line_item.py
+++ b/src/accounting/journal_entry/forms/line_item.py
@ -17,7 +17,7 @@
 """The line item sub-forms for the journal entry management.
 """
-import datetime as dt
+from datetime import date
 from decimal import Decimal
 import sqlalchemy as sa
@ -31,8 +31,9 @@ from accounting import db
 from accounting.forms import ACCOUNT_REQUIRED, AccountExists, IsDebitAccount, \
    IsCreditAccount
 from accounting.locale import lazy_gettext
-from accounting.models import Account, JournalEntry, JournalEntryLineItem
+from accounting.models import Account, JournalEntryLineItem
 from accounting.template_filters import format_amount
 from accounting.utils.cast import be
 from accounting.utils.random_id import new_id
 from accounting.utils.strip_text import strip_text
 from accounting.utils.user import get_current_user_pk
@ -126,8 +127,10 @@ class KeepAccountWhenHavingOffset:
        assert isinstance(form, LineItemForm)
        if field.data is None or form.id.data is None:
            return
-        line_item: JournalEntryLineItem | None \
+        line_item: JournalEntryLineItem | None = db.session\
-            = db.session.get(JournalEntryLineItem, form.id.data)
+            .query(JournalEntryLineItem)\
            .filter(JournalEntryLineItem.id == form.id.data)\
            .options(selectinload(JournalEntryLineItem.offsets)).first()
        if line_item is None or len(line_item.offsets) == 0:
            return
        if field.data != line_item.account_code:
@ -197,13 +200,13 @@ class NotExceedingOriginalLineItemNetBalance:
            existing_line_item_id \
                = {x.id for x in form.journal_entry_form.obj.line_items}
        offset_total_func: sa.Function = sa.func.sum(sa.case(
-            (JournalEntryLineItem.is_debit == is_debit,
+            (be(JournalEntryLineItem.is_debit == is_debit),
             JournalEntryLineItem.amount),
            else_=-JournalEntryLineItem.amount))
        offset_total_but_form: Decimal | None = db.session.scalar(
            sa.select(offset_total_func)
-            .filter(JournalEntryLineItem.original_line_item_id
+            .filter(be(JournalEntryLineItem.original_line_item_id
-                    == original_line_item.id,
+                       == original_line_item.id),
                    JournalEntryLineItem.id.not_in(existing_line_item_id)))
        if offset_total_but_form is None:
            offset_total_but_form = Decimal("0")
@ -231,7 +234,8 @@ class NotLessThanOffsetTotal:
            (JournalEntryLineItem.is_debit != is_debit,
             JournalEntryLineItem.amount),
            else_=-JournalEntryLineItem.amount)))\
-            .filter(JournalEntryLineItem.original_line_item_id == form.id.data)
+            .filter(be(JournalEntryLineItem.original_line_item_id
                       == form.id.data))
        offset_total: Decimal | None = db.session.scalar(select_offset_total)
        if offset_total is not None and field.data < offset_total:
            raise ValidationError(lazy_gettext(
@ -265,19 +269,6 @@ class LineItemForm(FlaskForm):
        self.journal_entry_form: JournalEntryForm | None = None
        """The source journal entry form."""
    @property
    def account_title(self) -> str:
        """Returns the title of the account.
        :return: The title of the account.
        """
        if self.account_code.data is None:
            return ""
        account: Account | None = Account.find_by_code(self.account_code.data)
        if account is None:
            return ""
        return account.title
    @property
    def account_text(self) -> str:
        """Returns the text representation of the account.
@ -307,7 +298,7 @@ class LineItemForm(FlaskForm):
        return getattr(self, "____original_line_item")
    @property
-    def original_line_item_date(self) -> dt.date | None:
+    def original_line_item_date(self) -> date | None:
        """Returns the text representation of the original line item.
        :return: The text representation of the original line item.
@ -353,13 +344,14 @@ class LineItemForm(FlaskForm):
            def get_offsets() -> list[JournalEntryLineItem]:
                if not self.is_need_offset or self.id.data is None:
                    return []
-                return JournalEntryLineItem.query.join(JournalEntry)\
+                return JournalEntryLineItem.query\
                    .filter(JournalEntryLineItem.original_line_item_id
                            == self.id.data)\
                    .order_by(JournalEntry.date, JournalEntry.no,
                              JournalEntryLineItem.no)\
                    .options(selectinload(JournalEntryLineItem.journal_entry),
-                             selectinload(JournalEntryLineItem.account)).all()
+                             selectinload(JournalEntryLineItem.account),
                             selectinload(JournalEntryLineItem.offsets)
                             .selectinload(
                                 JournalEntryLineItem.journal_entry)).all()
            setattr(self, "__offsets", get_offsets())
        return getattr(self, "__offsets")
--- a/src/accounting/journal_entry/forms/reorder.py
+++ b/src/accounting/journal_entry/forms/reorder.py
@ -17,7 +17,7 @@
 """The reorder forms for the journal entry management.
 """
-import datetime as dt
+from datetime import date
 import sqlalchemy as sa
 from flask import request
@ -26,15 +26,17 @@ from accounting import db
 from accounting.models import JournalEntry
-def sort_journal_entries_in(date: dt.date, exclude: int | None = None) -> None:
+def sort_journal_entries_in(journal_entry_date: date,
                            exclude: int | None = None) -> None:
    """Sorts the journal entries under a date after changing the date or
    deleting a journal entry.
-    :param date: The date of the journal entry.
+    :param journal_entry_date: The date of the journal entry.
    :param exclude: The journal entry ID to exclude.
    :return: None.
    """
-    conditions: list[sa.BinaryExpression] = [JournalEntry.date == date]
+    conditions: list[sa.BinaryExpression] \
        = [JournalEntry.date == journal_entry_date]
    if exclude is not None:
        conditions.append(JournalEntry.id != exclude)
    journal_entries: list[JournalEntry] = JournalEntry.query\
@ -48,15 +50,13 @@ def sort_journal_entries_in(date: dt.date, exclude: int | None = None) -> None:
 class JournalEntryReorderForm:
    """The form to reorder the journal entries."""
-    def __init__(self, date: dt.date):
+    def __init__(self, journal_entry_date: date):
        """Constructs the form to reorder the journal entries in a day.
-        :param date: The date.
+        :param journal_entry_date: The date.
        """
-        self.date: dt.date = date
+        self.date: date = journal_entry_date
        """The date."""
        self.is_modified: bool = False
        """Whether the order is modified."""
    def save_order(self) -> None:
        """Saves the order of the account.
--- a/src/accounting/journal_entry/utils/account_option.py
+++ b/src/accounting/journal_entry/utils/account_option.py
@ -32,8 +32,6 @@ class AccountOption:
        """The account ID."""
        self.code: str = account.code
        """The account code."""
        self.title: str = account.title
        """The account title."""
        self.query_values: list[str] = account.query_values
        """The values to be queried."""
        self.__str: str = str(account)
--- a/src/accounting/journal_entry/utils/description_editor.py
+++ b/src/accounting/journal_entry/utils/description_editor.py
@ -18,7 +18,7 @@
 """
 import re
-from typing import Literal
+import typing as t
 import sqlalchemy as sa
@ -54,14 +54,6 @@ class DescriptionAccount:
        """
        return str(self.__account)
    @property
    def title(self) -> str:
        """Returns the account title.
        :return: The account title.
        """
        return self.__account.title
    def add_freq(self, freq: int) -> None:
        """Adds the frequency of an account.
@ -124,12 +116,12 @@ class DescriptionTag:
 class DescriptionType:
    """A description type"""
-    def __init__(self, type_id: Literal["general", "travel", "bus"]):
+    def __init__(self, type_id: t.Literal["general", "travel", "bus"]):
        """Constructs a description type.
        :param type_id: The type ID, either "general", "travel", or "bus".
        """
-        self.id: Literal["general", "travel", "bus"] = type_id
+        self.id: t.Literal["general", "travel", "bus"] = type_id
        """The type ID."""
        self.__tag_dict: dict[str, DescriptionTag] = {}
        """A dictionary from the tag name to their corresponding tag."""
@ -166,11 +158,8 @@ class DescriptionRecurring:
        :param account: The account.
        """
        self.name: str = name
        """The name."""
        self.account: DescriptionAccount = DescriptionAccount(account, 0)
        """The account."""
        self.description_template: str = description_template
        """The description template."""
    @property
    def account_codes(self) -> list[str]:
@ -184,12 +173,12 @@ class DescriptionRecurring:
 class DescriptionDebitCredit:
    """The description on debit or credit."""
-    def __init__(self, debit_credit: Literal["debit", "credit"]):
+    def __init__(self, debit_credit: t.Literal["debit", "credit"]):
        """Constructs the description on debit or credit.
        :param debit_credit: Either "debit" or "credit".
        """
-        self.debit_credit: Literal["debit", "credit"] = debit_credit
+        self.debit_credit: t.Literal["debit", "credit"] = debit_credit
        """Either debit or credit."""
        self.general: DescriptionType = DescriptionType("general")
        """The general tags."""
@ -197,14 +186,14 @@ class DescriptionDebitCredit:
        """The travel tags."""
        self.bus: DescriptionType = DescriptionType("bus")
        """The bus tags."""
-        self.__type_dict: dict[Literal["general", "travel", "bus"],
+        self.__type_dict: dict[t.Literal["general", "travel", "bus"],
                               DescriptionType] \
            = {x.id: x for x in {self.general, self.travel, self.bus}}
        """A dictionary from the type ID to the corresponding tags."""
        self.recurring: list[DescriptionRecurring] = []
        """The recurring transactions."""
-    def add_tag(self, tag_type: Literal["general", "travel", "bus"],
+    def add_tag(self, tag_type: t.Literal["general", "travel", "bus"],
                name: str, account: Account, freq: int) -> None:
        """Adds a tag.
@ -281,7 +270,7 @@ class DescriptionEditor:
        accounts: dict[int, Account] \
            = {x.id: x for x in Account.query
               .filter(Account.id.in_({x.account_id for x in result})).all()}
-        debit_credit_dict: dict[Literal["debit", "credit"],
+        debit_credit_dict: dict[t.Literal["debit", "credit"],
                                DescriptionDebitCredit] \
            = {x.debit_credit: x for x in {self.debit, self.credit}}
        for row in result:
--- a/src/accounting/journal_entry/utils/offset_alias.py
+++ b/src/accounting/journal_entry/utils/offset_alias.py
@ -17,7 +17,7 @@
 """The SQLAlchemy alias for the offset items.
 """
-from typing import Any
+import typing as t
 import sqlalchemy as sa
@ -30,10 +30,10 @@ def offset_alias() -> sa.Alias:
    :return: The SQLAlchemy alias for the offset items.
    """
-    def as_from(model_cls: Any) -> sa.FromClause:
+    def as_from(model_cls: t.Any) -> sa.FromClause:
        return model_cls
-    def as_alias(alias: Any) -> sa.Alias:
+    def as_alias(alias: t.Any) -> sa.Alias:
        return alias
    return as_alias(sa.alias(as_from(JournalEntryLineItem), name="offset"))
--- a/src/accounting/journal_entry/utils/operators.py
+++ b/src/accounting/journal_entry/utils/operators.py
@ -17,19 +17,19 @@
 """The operators for different journal entry types.
 """
 import typing as t
 from abc import ABC, abstractmethod
 from typing import Type
 from flask import render_template, request, abort
 from flask_wtf import FlaskForm
 from accounting.models import JournalEntry
 from accounting.template_globals import default_currency_code
 from accounting.utils.journal_entry_types import JournalEntryType
 from accounting.journal_entry.forms import JournalEntryForm, \
    CashReceiptJournalEntryForm, CashDisbursementJournalEntryForm, \
    TransferJournalEntryForm
 from accounting.journal_entry.forms.line_item import LineItemForm
 from accounting.models import JournalEntry
 from accounting.template_globals import default_currency_code
 from accounting.utils.journal_entry_types import JournalEntryType
 class JournalEntryOperator(ABC):
@ -39,7 +39,7 @@ class JournalEntryOperator(ABC):
    @property
    @abstractmethod
-    def form(self) -> Type[JournalEntryForm]:
+    def form(self) -> t.Type[JournalEntryForm]:
        """Returns the form class.
        :return: The form class.
@ -100,7 +100,7 @@ class CashReceiptJournalEntry(JournalEntryOperator):
    """The order when checking the journal entry operator."""
    @property
-    def form(self) -> Type[JournalEntryForm]:
+    def form(self) -> t.Type[JournalEntryForm]:
        """Returns the form class.
        :return: The form class.
@ -170,7 +170,7 @@ class CashDisbursementJournalEntry(JournalEntryOperator):
    """The order when checking the journal entry operator."""
    @property
-    def form(self) -> Type[JournalEntryForm]:
+    def form(self) -> t.Type[JournalEntryForm]:
        """Returns the form class.
        :return: The form class.
@ -243,7 +243,7 @@ class TransferJournalEntry(JournalEntryOperator):
    """The order when checking the journal entry operator."""
    @property
-    def form(self) -> Type[JournalEntryForm]:
+    def form(self) -> t.Type[JournalEntryForm]:
        """Returns the form class.
        :return: The form class.
--- a/src/accounting/journal_entry/utils/original_line_items.py
+++ b/src/accounting/journal_entry/utils/original_line_items.py
@ -24,7 +24,8 @@ from sqlalchemy.orm import selectinload
 from accounting import db
 from accounting.models import Account, JournalEntry, JournalEntryLineItem
-from accounting.utils.offset_alias import offset_alias
+from accounting.utils.cast import be
 from .offset_alias import offset_alias
 def get_selectable_original_line_items(
@ -44,7 +45,8 @@ def get_selectable_original_line_items(
    offset: sa.Alias = offset_alias()
    net_balance: sa.Label = (JournalEntryLineItem.amount + sa.func.sum(sa.case(
        (offset.c.id.in_(line_item_id_on_form), 0),
-        (offset.c.is_debit == JournalEntryLineItem.is_debit, offset.c.amount),
+        (be(offset.c.is_debit == JournalEntryLineItem.is_debit),
         offset.c.amount),
        else_=-offset.c.amount))).label("net_balance")
    conditions: list[sa.BinaryExpression] = [Account.is_need_offset]
    sub_conditions: list[sa.BinaryExpression] = []
@ -58,8 +60,8 @@ def get_selectable_original_line_items(
    select_net_balances: sa.Select \
        = sa.select(JournalEntryLineItem.id, net_balance)\
        .join(Account)\
-        .join(offset,
+        .join(offset, be(JournalEntryLineItem.id
-              JournalEntryLineItem.id == offset.c.original_line_item_id,
+                         == offset.c.original_line_item_id),
              isouter=True)\
        .filter(*conditions)\
        .group_by(JournalEntryLineItem.id)\
--- a/src/accounting/journal_entry/views.py
+++ b/src/accounting/journal_entry/views.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/2/18
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -17,7 +17,7 @@
 """The views for the journal entry management.
 """
-import datetime as dt
+from datetime import date
 from urllib.parse import parse_qsl, urlencode
 import sqlalchemy as sa
@ -30,10 +30,9 @@ from accounting.locale import lazy_gettext
 from accounting.models import JournalEntry
 from accounting.utils.cast import s
 from accounting.utils.flash_errors import flash_form_errors
 from accounting.utils.journal_entry_types import JournalEntryType
 from accounting.utils.next_uri import inherit_next, or_next
 from accounting.utils.permission import has_permission, can_view, can_edit
-from accounting.utils.timezone import get_tz_today
+from accounting.utils.journal_entry_types import JournalEntryType
 from accounting.utils.user import get_current_user_pk
 from .forms import sort_journal_entries_in, JournalEntryReorderForm
 from .template_filters import with_type, to_transfer, format_amount_input, \
@ -50,7 +49,7 @@ bp.add_app_template_filter(format_amount_input,
 bp.add_app_template_filter(text2html, "accounting_journal_entry_text2html")
-@bp.get("create/<journalEntryType:journal_entry_type>", endpoint="create")
+@bp.get("/create/<journalEntryType:journal_entry_type>", endpoint="create")
@has_permission(can_edit)
 def show_add_journal_entry_form(journal_entry_type: JournalEntryType) -> str:
    """Shows the form to add a journal entry.
@ -68,11 +67,11 @@ def show_add_journal_entry_form(journal_entry_type: JournalEntryType) -> str:
        form.validate()
    else:
        form = journal_entry_op.form()
-        form.date.data = get_tz_today()
+        form.date.data = date.today()
    return journal_entry_op.render_create_template(form)
-@bp.post("store/<journalEntryType:journal_entry_type>", endpoint="store")
+@bp.post("/store/<journalEntryType:journal_entry_type>", endpoint="store")
@has_permission(can_edit)
 def add_journal_entry(journal_entry_type: JournalEntryType) -> redirect:
    """Adds a journal entry.
@ -99,7 +98,7 @@ def add_journal_entry(journal_entry_type: JournalEntryType) -> redirect:
    return redirect(inherit_next(__get_detail_uri(journal_entry)))
-@bp.get("<journalEntry:journal_entry>", endpoint="detail")
+@bp.get("/<journalEntry:journal_entry>", endpoint="detail")
@has_permission(can_view)
 def show_journal_entry_detail(journal_entry: JournalEntry) -> str:
    """Shows the journal entry detail.
@ -112,7 +111,7 @@ def show_journal_entry_detail(journal_entry: JournalEntry) -> str:
    return journal_entry_op.render_detail_template(journal_entry)
-@bp.get("<journalEntry:journal_entry>/edit", endpoint="edit")
+@bp.get("/<journalEntry:journal_entry>/edit", endpoint="edit")
@has_permission(can_edit)
 def show_journal_entry_edit_form(journal_entry: JournalEntry) -> str:
    """Shows the form to edit a journal entry.
@ -134,7 +133,7 @@ def show_journal_entry_edit_form(journal_entry: JournalEntry) -> str:
    return journal_entry_op.render_edit_template(journal_entry, form)
-@bp.post("<journalEntry:journal_entry>/update", endpoint="update")
+@bp.post("/<journalEntry:journal_entry>/update", endpoint="update")
@has_permission(can_edit)
 def update_journal_entry(journal_entry: JournalEntry) -> redirect:
    """Updates a journal entry.
@ -167,7 +166,7 @@ def update_journal_entry(journal_entry: JournalEntry) -> redirect:
    return redirect(inherit_next(__get_detail_uri(journal_entry)))
-@bp.post("<journalEntry:journal_entry>/delete", endpoint="delete")
+@bp.post("/<journalEntry:journal_entry>/delete", endpoint="delete")
@has_permission(can_edit)
 def delete_journal_entry(journal_entry: JournalEntry) -> redirect:
    """Deletes a journal entry.
@ -187,31 +186,31 @@ def delete_journal_entry(journal_entry: JournalEntry) -> redirect:
    return redirect(or_next(__get_default_page_uri()))
-@bp.get("dates/<date:date>", endpoint="order")
+@bp.get("/dates/<date:journal_entry_date>", endpoint="order")
@has_permission(can_view)
-def show_journal_entry_order(date: dt.date) -> str:
+def show_journal_entry_order(journal_entry_date: date) -> str:
    """Shows the order of the journal entries in a same date.
-    :param date: The date.
+    :param journal_entry_date: The date.
    :return: The order of the journal entries in the date.
    """
    journal_entries: list[JournalEntry] = JournalEntry.query \
-        .filter(JournalEntry.date == date) \
+        .filter(JournalEntry.date == journal_entry_date) \
        .order_by(JournalEntry.no).all()
    return render_template("accounting/journal-entry/order.html",
-                           date=date, list=journal_entries)
+                           date=journal_entry_date, list=journal_entries)
-@bp.post("dates/<date:date>", endpoint="sort")
+@bp.post("/dates/<date:journal_entry_date>", endpoint="sort")
@has_permission(can_edit)
-def sort_journal_entries(date: dt.date) -> redirect:
+def sort_journal_entries(journal_entry_date: date) -> redirect:
    """Reorders the journal entries in a date.
-    :param date: The date.
+    :param journal_entry_date: The date.
    :return: The redirection to the incoming account or the account list.  The
        reordering operation does not fail.
    """
-    form: JournalEntryReorderForm = JournalEntryReorderForm(date)
+    form: JournalEntryReorderForm = JournalEntryReorderForm(journal_entry_date)
    form.save_order()
    if not form.is_modified:
        flash(s(lazy_gettext("The order was not modified.")), "success")
--- a/src/accounting/locale.py
+++ b/src/accounting/locale.py
@ -25,10 +25,8 @@ from flask_babel import LazyString, Domain
 from flask_babel_js import JAVASCRIPT, c2js
 translation_dir: Path = Path(__file__).parent / "translations"
 """The directory of the translation files."""
 domain: Domain = Domain(translation_directories=[translation_dir],
                        domain="accounting")
 """The message domain."""
 def gettext(string, **variables) -> str:
@ -122,5 +120,6 @@ def init_app(app: Flask, bp: Blueprint) -> None:
    :param bp: The blueprint of the accounting application.
    :return: None.
    """
-    bp.add_url_rule("/_jstrans.js", "babel_catalog", __babel_js_catalog_view)
+    bp.add_url_rule("/_jstrans.js", "babel_catalog",
                    __babel_js_catalog_view)
    app.jinja_env.globals["A_"] = domain.gettext
--- a/src/accounting/models.py
+++ b/src/accounting/models.py
@ -19,16 +19,14 @@
 """
 from __future__ import annotations
 import datetime as dt
 import re
 import typing as t
 from decimal import Decimal
 from typing import Type, Self
 import sqlalchemy as sa
 from babel import Locale
 from flask_babel import get_locale, get_babel
 from sqlalchemy import text
 from sqlalchemy.orm import Mapped, mapped_column
 from accounting import db
 from accounting.locale import gettext
@ -39,14 +37,14 @@ class BaseAccount(db.Model):
    """A base account."""
    __tablename__ = "accounting_base_accounts"
    """The table name."""
-    code: Mapped[str] = mapped_column(primary_key=True)
+    code = db.Column(db.String, nullable=False, primary_key=True)
-    """The account code."""
+    """The code."""
-    title_l10n: Mapped[str] = mapped_column("title")
+    title_l10n = db.Column("title", db.String, nullable=False)
    """The title."""
-    l10n: Mapped[list[BaseAccountL10n]] \
+    l10n = db.relationship("BaseAccountL10n", back_populates="account",
-        = db.relationship(back_populates="account", lazy=False)
+                           lazy=False)
    """The localized titles."""
-    accounts: Mapped[list[Account]] = db.relationship(back_populates="base")
+    accounts = db.relationship("Account", back_populates="base")
    """The descendant accounts under the base account."""
    def __str__(self) -> str:
@ -54,7 +52,7 @@ class BaseAccount(db.Model):
        :return: The string representation of the base account.
        """
-        return f"{self.code} {self.title}"
+        return f"{self.code} {self.title.title()}"
    @property
    def title(self) -> str:
@ -83,16 +81,17 @@ class BaseAccountL10n(db.Model):
    """A localized base account title."""
    __tablename__ = "accounting_base_accounts_l10n"
    """The table name."""
-    account_code: Mapped[str] \
+    account_code = db.Column(db.String,
-        = mapped_column(db.ForeignKey(BaseAccount.code, onupdate="CASCADE",
+                             db.ForeignKey(BaseAccount.code,
-                                      ondelete="CASCADE"),
+                                           onupdate="CASCADE",
-                        primary_key=True)
+                                           ondelete="CASCADE"),
-    """The account code."""
+                             nullable=False, primary_key=True)
-    account: Mapped[BaseAccount] = db.relationship(back_populates="l10n")
+    """The code of the account."""
    account = db.relationship(BaseAccount, back_populates="l10n")
    """The account."""
-    locale: Mapped[str] = mapped_column(primary_key=True)
+    locale = db.Column(db.String, nullable=False, primary_key=True)
    """The locale."""
-    title: Mapped[str]
+    title = db.Column(db.String, nullable=False)
    """The localized title."""
@ -100,43 +99,47 @@ class Account(db.Model):
    """An account."""
    __tablename__ = "accounting_accounts"
    """The table name."""
-    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=False)
+    id = db.Column(db.Integer, nullable=False, primary_key=True,
                   autoincrement=False)
    """The account ID."""
-    base_code: Mapped[str] \
+    base_code = db.Column(db.String,
-        = mapped_column(db.ForeignKey(BaseAccount.code, onupdate="CASCADE",
+                          db.ForeignKey(BaseAccount.code, onupdate="CASCADE",
-                                      ondelete="CASCADE"))
+                                        ondelete="CASCADE"),
                          nullable=False)
    """The code of the base account."""
-    base: Mapped[BaseAccount] = db.relationship(back_populates="accounts")
+    base = db.relationship(BaseAccount, back_populates="accounts")
    """The base account."""
-    no: Mapped[int] = mapped_column(default=text("1"))
+    no = db.Column(db.Integer, nullable=False, default=text("1"))
    """The account number under the base account."""
-    title_l10n: Mapped[str] = mapped_column("title")
+    title_l10n = db.Column("title", db.String, nullable=False)
    """The title."""
-    is_need_offset: Mapped[bool] = mapped_column(default=False)
+    is_need_offset = db.Column(db.Boolean, nullable=False, default=False)
    """Whether the journal entry line items of this account need offset."""
-    created_at: Mapped[dt.datetime] \
+    created_at = db.Column(db.DateTime(timezone=True), nullable=False,
-        = mapped_column(db.DateTime(timezone=True),
+                           server_default=db.func.now())
-                        server_default=db.func.now())
+    """The time of creation."""
-    """The date and time when this record was created."""
+    created_by_id = db.Column(db.Integer,
-    created_by_id: Mapped[int] \
+                              db.ForeignKey(user_pk_column,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                                            onupdate="CASCADE"),
-    """The ID of the user who created the record."""
+                              nullable=False)
-    created_by: Mapped[user_cls] = db.relationship(foreign_keys=created_by_id)
+    """The ID of the creator."""
-    """The user who created the record."""
+    created_by = db.relationship(user_cls, foreign_keys=created_by_id)
-    updated_at: Mapped[dt.datetime] \
+    """The creator."""
-        = mapped_column(db.DateTime(timezone=True),
+    updated_at = db.Column(db.DateTime(timezone=True), nullable=False,
-                        server_default=db.func.now())
+                           server_default=db.func.now())
-    """The date and time when this record was last updated."""
+    """The time of last update."""
-    updated_by_id: Mapped[int] \
+    updated_by_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                              db.ForeignKey(user_pk_column,
-    """The ID of the last user who updated the record."""
+                                            onupdate="CASCADE"),
-    updated_by: Mapped[user_cls] = db.relationship(foreign_keys=updated_by_id)
+                              nullable=False)
-    """The last user who updated the record."""
+    """The ID of the updator."""
-    l10n: Mapped[list[AccountL10n]] \
+    updated_by = db.relationship(user_cls, foreign_keys=updated_by_id)
-        = db.relationship(back_populates="account", lazy=False)
+    """The updator."""
    l10n = db.relationship("AccountL10n", back_populates="account",
                           lazy=False)
    """The localized titles."""
-    line_items: Mapped[list[JournalEntryLineItem]] \
+    line_items = db.relationship("JournalEntryLineItem",
-        = db.relationship(back_populates="account")
+                                 back_populates="account")
    """The journal entry line items."""
    CASH_CODE: str = "1111-001"
@ -151,7 +154,7 @@ class Account(db.Model):
        :return: The string representation of this account.
        """
-        return f"{self.base_code}-{self.no:03d} {self.title}"
+        return f"{self.base_code}-{self.no:03d} {self.title.title()}"
    @property
    def code(self) -> str:
@ -182,8 +185,6 @@ class Account(db.Model):
        :param value: The new title.
        :return: None.
        """
        if self.title == value:
            return
        if self.title_l10n is None:
            self.title_l10n = value
            return
@ -213,25 +214,6 @@ class Account(db.Model):
        """
        return not self.is_real
    @property
    def count(self) -> int:
        """Returns the number of items in the account.
        :return: The number of items in the account.
        """
        if not hasattr(self, "__count"):
            setattr(self, "__count", 0)
        return getattr(self, "__count")
    @count.setter
    def count(self, value: int) -> None:
        """Sets the number of items in the account.
        :param value: The number of items in the account.
        :return: None.
        """
        setattr(self, "__count", value)
    @property
    def query_values(self) -> list[str]:
        """Returns the values to be queried.
@ -269,11 +251,11 @@ class Account(db.Model):
        :return: None.
        """
        AccountL10n.query.filter(AccountL10n.account == self).delete()
-        cls: Type[Self] = self.__class__
+        cls: t.Type[t.Self] = self.__class__
        cls.query.filter(cls.id == self.id).delete()
    @classmethod
-    def find_by_code(cls, code: str) -> Self | None:
+    def find_by_code(cls, code: str) -> t.Self | None:
        """Finds an account by its code.
        :param code: The code.
@ -286,7 +268,7 @@ class Account(db.Model):
                                cls.no == int(m.group(2))).first()
    @classmethod
-    def selectable_debit(cls) -> list[Self]:
+    def selectable_debit(cls) -> list[t.Self]:
        """Returns the selectable debit accounts.
        Payable line items can not start from debit.
@ -304,11 +286,12 @@ class Account(db.Model):
                                       cls.base_code.startswith("78"),
                                       cls.base_code.startswith("8"),
                                       cls.base_code.startswith("9")),
                                cls.base_code != "3351",
                                cls.base_code != "3353")\
            .order_by(cls.base_code, cls.no).all()
    @classmethod
-    def selectable_credit(cls) -> list[Self]:
+    def selectable_credit(cls) -> list[t.Self]:
        """Returns the selectable debit accounts.
        Receivable line items can not start from credit.
@ -325,11 +308,12 @@ class Account(db.Model):
                                       cls.base_code.startswith("74"),
                                       cls.base_code.startswith("8"),
                                       cls.base_code.startswith("9")),
                                cls.base_code != "3351",
                                cls.base_code != "3353")\
            .order_by(cls.base_code, cls.no).all()
    @classmethod
-    def cash(cls) -> Self:
+    def cash(cls) -> t.Self:
        """Returns the cash account.
        :return: The cash account
@ -337,7 +321,7 @@ class Account(db.Model):
        return cls.find_by_code(cls.CASH_CODE)
    @classmethod
-    def accumulated_change(cls) -> Self:
+    def accumulated_change(cls) -> t.Self:
        """Returns the accumulated-change account.
        :return: The accumulated-change account
@ -349,16 +333,16 @@ class AccountL10n(db.Model):
    """A localized account title."""
    __tablename__ = "accounting_accounts_l10n"
    """The table name."""
-    account_id: Mapped[int] \
+    account_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(Account.id, onupdate="CASCADE",
+                           db.ForeignKey(Account.id, onupdate="CASCADE",
-                                      ondelete="CASCADE"),
+                                         ondelete="CASCADE"),
-                        primary_key=True)
+                           nullable=False, primary_key=True)
    """The account ID."""
-    account: Mapped[Account] = db.relationship(back_populates="l10n")
+    account = db.relationship(Account, back_populates="l10n")
    """The account."""
-    locale: Mapped[str] = mapped_column(primary_key=True)
+    locale = db.Column(db.String, nullable=False, primary_key=True)
    """The locale."""
-    title: Mapped[str]
+    title = db.Column(db.String, nullable=False)
    """The localized title."""
@ -366,34 +350,35 @@ class Currency(db.Model):
    """A currency."""
    __tablename__ = "accounting_currencies"
    """The table name."""
-    code: Mapped[str] = mapped_column(primary_key=True)
+    code = db.Column(db.String, nullable=False, primary_key=True)
-    """The currency code."""
+    """The code."""
-    name_l10n: Mapped[str] = mapped_column("name")
+    name_l10n = db.Column("name", db.String, nullable=False)
-    """The currency name."""
+    """The name."""
-    created_at: Mapped[dt.datetime] \
+    created_at = db.Column(db.DateTime(timezone=True), nullable=False,
-        = mapped_column(db.DateTime(timezone=True),
+                           server_default=db.func.now())
-                        server_default=db.func.now())
+    """The time of creation."""
-    """The date and time when this record was created."""
+    created_by_id = db.Column(db.Integer,
-    created_by_id: Mapped[int] \
+                              db.ForeignKey(user_pk_column,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                                            onupdate="CASCADE"),
-    """The ID of the user who created the record."""
+                              nullable=False)
-    created_by: Mapped[user_cls] = db.relationship(foreign_keys=created_by_id)
+    """The ID of the creator."""
-    """The user who created the record."""
+    created_by = db.relationship(user_cls, foreign_keys=created_by_id)
-    updated_at: Mapped[dt.datetime] \
+    """The creator."""
-        = mapped_column(db.DateTime(timezone=True),
+    updated_at = db.Column(db.DateTime(timezone=True), nullable=False,
-                        server_default=db.func.now())
+                           server_default=db.func.now())
-    """The date and time when this record was last updated."""
+    """The time of last update."""
-    updated_by_id: Mapped[int] \
+    updated_by_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                              db.ForeignKey(user_pk_column,
-    """The ID of the last user who updated the record."""
+                                            onupdate="CASCADE"),
-    updated_by: Mapped[user_cls] \
+                              nullable=False)
-        = db.relationship(foreign_keys=updated_by_id)
+    """The ID of the updator."""
-    """The last user who updated the record."""
+    updated_by = db.relationship(user_cls, foreign_keys=updated_by_id)
-    l10n: Mapped[list[CurrencyL10n]] \
+    """The updator."""
-        = db.relationship(back_populates="currency", lazy=False)
+    l10n = db.relationship("CurrencyL10n", back_populates="currency",
                           lazy=False)
    """The localized names."""
-    line_items: Mapped[list[JournalEntryLineItem]] \
+    line_items = db.relationship("JournalEntryLineItem",
-        = db.relationship(back_populates="currency")
+                                 back_populates="currency")
    """The journal entry line items."""
    def __str__(self) -> str:
@ -424,8 +409,6 @@ class Currency(db.Model):
        :param value: The new name.
        :return: None.
        """
        if self.name == value:
            return
        if self.name_l10n is None:
            self.name_l10n = value
            return
@ -469,7 +452,7 @@ class Currency(db.Model):
        :return: None.
        """
        CurrencyL10n.query.filter(CurrencyL10n.currency == self).delete()
-        cls: Type[Self] = self.__class__
+        cls: t.Type[t.Self] = self.__class__
        cls.query.filter(cls.code == self.code).delete()
@ -477,16 +460,16 @@ class CurrencyL10n(db.Model):
    """A localized currency name."""
    __tablename__ = "accounting_currencies_l10n"
    """The table name."""
-    currency_code: Mapped[str] \
+    currency_code = db.Column(db.String,
-        = mapped_column(db.ForeignKey(Currency.code, onupdate="CASCADE",
+                              db.ForeignKey(Currency.code, onupdate="CASCADE",
-                                      ondelete="CASCADE"),
+                                            ondelete="CASCADE"),
-                        primary_key=True)
+                              nullable=False, primary_key=True)
    """The currency code."""
-    currency: Mapped[Currency] = db.relationship(back_populates="l10n")
+    currency = db.relationship(Currency, back_populates="l10n")
    """The currency."""
-    locale: Mapped[str] = mapped_column(primary_key=True)
+    locale = db.Column(db.String, nullable=False, primary_key=True)
    """The locale."""
-    name: Mapped[str]
+    name = db.Column(db.String, nullable=False)
    """The localized name."""
@ -537,34 +520,37 @@ class JournalEntry(db.Model):
    """A journal entry."""
    __tablename__ = "accounting_journal_entries"
    """The table name."""
-    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=False)
+    id = db.Column(db.Integer, nullable=False, primary_key=True,
                   autoincrement=False)
    """The journal entry ID."""
-    date: Mapped[dt.date]
+    date = db.Column(db.Date, nullable=False)
    """The date."""
-    no: Mapped[int] = mapped_column(default=text("1"))
+    no = db.Column(db.Integer, nullable=False, default=text("1"))
-    """The journal entry number under the date."""
+    """The account number under the date."""
-    note: Mapped[str | None]
+    note = db.Column(db.String)
    """The note."""
-    created_at: Mapped[dt.datetime] \
+    created_at = db.Column(db.DateTime(timezone=True), nullable=False,
-        = mapped_column(db.DateTime(timezone=True),
+                           server_default=db.func.now())
-                        server_default=db.func.now())
+    """The time of creation."""
-    """The date and time when this record was created."""
+    created_by_id = db.Column(db.Integer,
-    created_by_id: Mapped[int] \
+                              db.ForeignKey(user_pk_column,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                                            onupdate="CASCADE"),
-    """The ID of the user who created the record."""
+                              nullable=False)
-    created_by: Mapped[user_cls] = db.relationship(foreign_keys=created_by_id)
+    """The ID of the creator."""
-    """The user who created the record."""
+    created_by = db.relationship(user_cls, foreign_keys=created_by_id)
-    updated_at: Mapped[dt.datetime] \
+    """The creator."""
-        = mapped_column(db.DateTime(timezone=True),
+    updated_at = db.Column(db.DateTime(timezone=True), nullable=False,
-                        server_default=db.func.now())
+                           server_default=db.func.now())
-    """The date and time when this record was last updated."""
+    """The time of last update."""
-    updated_by_id: Mapped[int] \
+    updated_by_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                              db.ForeignKey(user_pk_column,
-    """The ID of the last user who updated the record."""
+                                            onupdate="CASCADE"),
-    updated_by: Mapped[user_cls] = db.relationship(foreign_keys=updated_by_id)
+                              nullable=False)
-    """The last user who updated the record."""
+    """The ID of the updator."""
-    line_items: Mapped[list[JournalEntryLineItem]] \
+    updated_by = db.relationship(user_cls, foreign_keys=updated_by_id)
-        = db.relationship(back_populates="journal_entry")
+    """The updator."""
    line_items = db.relationship("JournalEntryLineItem",
                                 back_populates="journal_entry")
    """The line items."""
    def __str__(self) -> str:
@ -654,39 +640,48 @@ class JournalEntryLineItem(db.Model):
    """A line item in the journal entry."""
    __tablename__ = "accounting_journal_entry_line_items"
    """The table name."""
-    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=False)
+    id = db.Column(db.Integer, nullable=False, primary_key=True,
                   autoincrement=False)
    """The line item ID."""
-    journal_entry_id: Mapped[int] \
+    journal_entry_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(JournalEntry.id, onupdate="CASCADE",
+                                 db.ForeignKey(JournalEntry.id,
-                                      ondelete="CASCADE"))
+                                               onupdate="CASCADE",
                                               ondelete="CASCADE"),
                                 nullable=False)
    """The journal entry ID."""
-    journal_entry: Mapped[JournalEntry] \
+    journal_entry = db.relationship(JournalEntry, back_populates="line_items")
        = db.relationship(back_populates="line_items")
    """The journal entry."""
-    is_debit: Mapped[bool]
+    is_debit = db.Column(db.Boolean, nullable=False)
    """True for a debit line item, or False for a credit line item."""
-    no: Mapped[int]
+    no = db.Column(db.Integer, nullable=False)
    """The line item number under the journal entry and debit or credit."""
-    original_line_item_id: Mapped[int | None] \
+    original_line_item_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(id, onupdate="CASCADE"))
+                                      db.ForeignKey(id, onupdate="CASCADE"),
                                      nullable=True)
    """The ID of the original line item."""
-    original_line_item: Mapped[JournalEntryLineItem | None] \
+    original_line_item = db.relationship("JournalEntryLineItem",
-        = db.relationship(remote_side=id, passive_deletes=True)
+                                         back_populates="offsets",
                                         remote_side=id, passive_deletes=True)
    """The original line item."""
-    currency_code: Mapped[str] \
+    offsets = db.relationship("JournalEntryLineItem",
-        = mapped_column(db.ForeignKey(Currency.code, onupdate="CASCADE"))
+                              back_populates="original_line_item")
    """The offset items."""
    currency_code = db.Column(db.String,
                              db.ForeignKey(Currency.code, onupdate="CASCADE"),
                              nullable=False)
    """The currency code."""
-    currency: Mapped[Currency] = db.relationship(back_populates="line_items")
+    currency = db.relationship(Currency, back_populates="line_items")
    """The currency."""
-    account_id: Mapped[int] \
+    account_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(Account.id, onupdate="CASCADE"))
+                           db.ForeignKey(Account.id,
                                         onupdate="CASCADE"),
                           nullable=False)
    """The account ID."""
-    account: Mapped[Account] \
+    account = db.relationship(Account, back_populates="line_items", lazy=False)
        = db.relationship(back_populates="line_items", lazy=False)
    """The account."""
-    description: Mapped[str | None]
+    description = db.Column(db.String, nullable=True)
    """The description."""
-    amount: Mapped[Decimal] = mapped_column(db.Numeric(14, 2))
+    amount = db.Column(db.Numeric(14, 2), nullable=False)
    """The amount."""
    def __str__(self) -> str:
@ -712,6 +707,14 @@ class JournalEntryLineItem(db.Model):
        """
        return self.account.code
    @property
    def debit(self) -> Decimal | None:
        """Returns the debit amount.
        :return: The debit amount, or None if this is not a debit line item.
        """
        return self.amount if self.is_debit else None
    @property
    def is_need_offset(self) -> bool:
        """Returns whether the line item needs offset.
@ -726,43 +729,13 @@ class JournalEntryLineItem(db.Model):
            return False
        return True
    @property
    def debit(self) -> Decimal | None:
        """Returns the debit amount.
        :return: The debit amount, or None if this is not a debit line item.
        """
        if not hasattr(self, "__debit"):
            setattr(self, "__debit", self.amount if self.is_debit else None)
        return getattr(self, "__debit")
    @debit.setter
    def debit(self, value: Decimal | None) -> None:
        """Sets the debit amount.
        :param value: The debit amount.
        :return: None.
        """
        setattr(self, "__debit", value)
    @property
    def credit(self) -> Decimal | None:
        """Returns the credit amount.
        :return: The credit amount, or None if this is not a credit line item.
        """
-        if not hasattr(self, "__credit"):
+        return None if self.is_debit else self.amount
            setattr(self, "__credit", None if self.is_debit else self.amount)
        return getattr(self, "__credit")
    @credit.setter
    def credit(self, value: Decimal | None) -> None:
        """Sets the credit amount.
        :param value: The credit amount.
        :return: None.
        """
        setattr(self, "__credit", value)
    @property
    def net_balance(self) -> Decimal:
@ -777,85 +750,13 @@ class JournalEntryLineItem(db.Model):
        return getattr(self, "__net_balance")
    @net_balance.setter
-    def net_balance(self, value: Decimal) -> None:
+    def net_balance(self, net_balance: Decimal) -> None:
        """Sets the net balance.
-        :param value: The net balance.
+        :param net_balance: The net balance.
        :return: None.
        """
-        setattr(self, "__net_balance", value)
+        setattr(self, "__net_balance", net_balance)
    @property
    def balance(self) -> Decimal:
        """Returns the balance.
        :return: The balance.
        """
        if not hasattr(self, "__balance"):
            setattr(self, "__balance", Decimal("0"))
        return getattr(self, "__balance")
    @balance.setter
    def balance(self, value: Decimal) -> None:
        """Sets the balance.
        :param value: The balance.
        :return: None.
        """
        setattr(self, "__balance", value)
    @property
    def offsets(self) -> list[Self]:
        """Returns the offset items.
        :return: The offset items.
        """
        if not hasattr(self, "__offsets"):
            cls: Type[Self] = self.__class__
            offsets: list[Self] = cls.query.join(JournalEntry)\
                .filter(JournalEntryLineItem.original_line_item_id == self.id)\
                .order_by(JournalEntry.date, JournalEntry.no,
                          cls.is_debit, cls.no).all()
            setattr(self, "__offsets", offsets)
        return getattr(self, "__offsets")
    @property
    def is_offset(self) -> bool:
        """Returns whether the line item is an offset.
        :return: True if the line item is an offset, or False otherwise.
        """
        if not hasattr(self, "__is_offset"):
            setattr(self, "__is_offset", False)
        return getattr(self, "__is_offset")
    @is_offset.setter
    def is_offset(self, value: bool) -> None:
        """Sets whether the line item is an offset.
        :param value: True if the line item is an offset, or False otherwise.
        :return: None.
        """
        setattr(self, "__is_offset", value)
    @property
    def match(self) -> Self | None:
        """Returns the match of the line item.
        :return: The match of the line item.
        """
        if not hasattr(self, "__match"):
            setattr(self, "__match", None)
        return getattr(self, "__match")
    @match.setter
    def match(self, value: Self) -> None:
        """Sets the match of the line item.
        :param value: The matcho of the line item.
        :return: None.
        """
        setattr(self, "__match", value)
    @property
    def query_values(self) -> list[str]:
@ -872,7 +773,6 @@ class JournalEntryLineItem(db.Model):
                                  self.journal_entry.date.month,
                                  self.journal_entry.date.day),
                "" if self.description is None else self.description,
                str(self.account),
                format_amount(self.amount)]
@ -880,25 +780,27 @@ class Option(db.Model):
    """An option."""
    __tablename__ = "accounting_options"
    """The table name."""
-    name: Mapped[str] = mapped_column(primary_key=True)
+    name = db.Column(db.String, nullable=False, primary_key=True)
    """The name."""
-    value: Mapped[str] = mapped_column(db.Text)
+    value = db.Column(db.Text, nullable=False)
    """The option value."""
-    created_at: Mapped[dt.datetime] \
+    created_at = db.Column(db.DateTime(timezone=True), nullable=False,
-        = mapped_column(db.DateTime(timezone=True),
+                           server_default=db.func.now())
-                        server_default=db.func.now())
+    """The time of creation."""
-    """The date and time when this record was created."""
+    created_by_id = db.Column(db.Integer,
-    created_by_id: Mapped[int] \
+                              db.ForeignKey(user_pk_column,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                                            onupdate="CASCADE"),
-    """The ID of the user who created the record."""
+                              nullable=False)
-    created_by: Mapped[user_cls] = db.relationship(foreign_keys=created_by_id)
+    """The ID of the creator."""
-    """The user who created the record."""
+    created_by = db.relationship(user_cls, foreign_keys=created_by_id)
-    updated_at: Mapped[dt.datetime] \
+    """The creator."""
-        = mapped_column(db.DateTime(timezone=True),
+    updated_at = db.Column(db.DateTime(timezone=True), nullable=False,
-                        server_default=db.func.now())
+                           server_default=db.func.now())
-    """The date and time when this record was last updated."""
+    """The time of last update."""
-    updated_by_id: Mapped[int] \
+    updated_by_id = db.Column(db.Integer,
-        = mapped_column(db.ForeignKey(user_pk_column, onupdate="CASCADE"))
+                              db.ForeignKey(user_pk_column,
-    """The ID of the last user who updated the record."""
+                                            onupdate="CASCADE"),
-    updated_by: Mapped[user_cls] = db.relationship(foreign_keys=updated_by_id)
+                              nullable=False)
-    """The last user who updated the record."""
+    """The ID of the updator."""
    updated_by = db.relationship(user_cls, foreign_keys=updated_by_id)
    """The updator."""
--- a/src/accounting/report/init.py
+++ b/src/accounting/report/init.py
@ -27,11 +27,9 @@ def init_app(app: Flask, url_prefix: str) -> None:
    :param url_prefix: The URL prefix of the accounting application.
    :return: None.
    """
-    from .converters import PeriodConverter, CurrentAccountConverter, \
+    from .converters import PeriodConverter, IncomeExpensesAccountConverter
        NeedOffsetAccountConverter
    app.url_map.converters["period"] = PeriodConverter
-    app.url_map.converters["currentAccount"] = CurrentAccountConverter
+    app.url_map.converters["ieAccount"] = IncomeExpensesAccountConverter
    app.url_map.converters["needOffsetAccount"] = NeedOffsetAccountConverter
    from .views import bp as report_bp
    app.register_blueprint(report_bp, url_prefix=url_prefix)
--- a/src/accounting/report/converters.py
+++ b/src/accounting/report/converters.py
@ -28,8 +28,8 @@ from .period import Period, get_period
 class PeriodConverter(BaseConverter):
-    """The converter to convert the period specification from and to the
+    """The supplier converter to convert the period specification from and to
-    corresponding period in the routes."""
+    the corresponding period in the routes."""
    def to_python(self, value: str) -> Period:
        """Converts a period specification to a period.
@ -51,9 +51,9 @@ class PeriodConverter(BaseConverter):
        return value.spec
-class CurrentAccountConverter(BaseConverter):
+class IncomeExpensesAccountConverter(BaseConverter):
-    """The converter to convert the current account code from and to the
+    """The supplier converter to convert the income and expenses log pseudo
-    corresponding account in the routes."""
+    account code from and to the corresponding pseudo account in the routes."""
    def to_python(self, value: str) -> CurrentAccount:
        """Converts an account code to an account.
@ -77,29 +77,3 @@ class CurrentAccountConverter(BaseConverter):
        :return: Its code.
        """
        return value.code
 class NeedOffsetAccountConverter(BaseConverter):
    """The converter to convert the unapplied original line item account code
    from and to the corresponding account in the routes."""
    def to_python(self, value: str) -> Account:
        """Converts an account code to an account.
        :param value: The account code.
        :return: The corresponding account.
        """
        account: Account | None = Account.find_by_code(value)
        if account is None:
            abort(404)
        if not account.is_need_offset:
            abort(404)
        return account
    def to_url(self, value: Account) -> str:
        """Converts an account to account code.
        :param value: The account.
        :return: Its code.
        """
        return value.code
--- a/src/accounting/report/period/chooser.py
+++ b/src/accounting/report/period/chooser.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/4
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -20,11 +20,10 @@ This file is largely taken from the NanoParma ERP project, first written in
 2021/9/16 by imacat (imacat@nanoparma.com).
 """
-import datetime as dt
+import typing as t
-from collections.abc import Callable
+from datetime import date
 from accounting.models import JournalEntry
 from accounting.utils.timezone import get_tz_today
 from .period import Period
 from .shortcuts import ThisMonth, LastMonth, SinceLastMonth, ThisYear, \
    LastYear, Today, Yesterday, AllTime, TemplatePeriod, YearPeriod
@ -33,13 +32,13 @@ from .shortcuts import ThisMonth, LastMonth, SinceLastMonth, ThisYear, \
 class PeriodChooser:
    """The period chooser."""
-    def __init__(self, get_url: Callable[[Period], str]):
+    def __init__(self, get_url: t.Callable[[Period], str]):
        """Constructs a period chooser.
        :param get_url: The callback to return the URL of the current report in
            a period.
        """
-        self.__get_url: Callable[[Period], str] = get_url
+        self.__get_url: t.Callable[[Period], str] = get_url
        """The callback to return the URL of the current report in a period."""
        # Shortcut periods
@ -64,10 +63,10 @@ class PeriodChooser:
        first: JournalEntry | None \
            = JournalEntry.query.order_by(JournalEntry.date).first()
-        start: dt.date | None = None if first is None else first.date
+        start: date | None = None if first is None else first.date
        # Attributes
-        self.data_start: dt.date | None = start
+        self.data_start: date | None = start
        """The start of the data."""
        self.has_data: bool = start is not None
        """Whether there is any data."""
@ -81,8 +80,8 @@ class PeriodChooser:
        """The available years."""
        if self.has_data:
-            today: dt.date = get_tz_today()
+            today: date = date.today()
-            self.has_last_month = start < dt.date(today.year, today.month, 1)
+            self.has_last_month = start < date(today.year, today.month, 1)
            self.has_last_year = start.year < today.year
            self.has_yesterday = start < today
            if start.year < today.year - 1:
--- a/src/accounting/report/period/description.py
+++ b/src/accounting/report/period/description.py
@ -17,12 +17,12 @@
 """The period description composer.
 """
-import datetime as dt
+from datetime import date, timedelta
 from accounting.locale import gettext
-def get_desc(start: dt.date | None, end: dt.date | None) -> str:
+def get_desc(start: date | None, end: date | None) -> str:
    """Returns the period description.
    :param start: The start of the period.
@ -46,7 +46,7 @@ def get_desc(start: dt.date | None, end: dt.date | None) -> str:
    return __get_day_desc(start, end)
-def __get_since_desc(start: dt.date) -> str:
+def __get_since_desc(start: date) -> str:
    """Returns the description without the end day.
    :param start: The start of the period.
@ -67,7 +67,7 @@ def __get_since_desc(start: dt.date) -> str:
    return gettext("since %(start)s", start=get_start_desc())
-def __get_until_desc(end: dt.date) -> str:
+def __get_until_desc(end: date) -> str:
    """Returns the description without the start day.
    :param end: The end of the period.
@ -81,14 +81,14 @@ def __get_until_desc(end: dt.date) -> str:
        """
        if end.month == 12 and end.day == 31:
            return str(end.year)
-        if (end + dt.timedelta(days=1)).day == 1:
+        if (end + timedelta(days=1)).day == 1:
            return __format_month(end)
        return __format_day(end)
    return gettext("until %(end)s", end=get_end_desc())
-def __get_year_desc(start: dt.date, end: dt.date) -> str:
+def __get_year_desc(start: date, end: date) -> str:
    """Returns the description as a year range.
    :param start: The start of the period.
@ -105,7 +105,7 @@ def __get_year_desc(start: dt.date, end: dt.date) -> str:
    return __get_from_to_desc(start_text, str(end.year))
-def __get_month_desc(start: dt.date, end: dt.date) -> str:
+def __get_month_desc(start: date, end: date) -> str:
    """Returns the description as a month range.
    :param start: The start of the period.
@ -113,7 +113,7 @@ def __get_month_desc(start: dt.date, end: dt.date) -> str:
    :return: The description as a month range.
    :raise ValueError: The period is not a month range.
    """
-    if start.day != 1 or (end + dt.timedelta(days=1)).day != 1:
+    if start.day != 1 or (end + timedelta(days=1)).day != 1:
        raise ValueError
    start_text: str = __format_month(start)
    if start.year == end.year and start.month == end.month:
@ -123,7 +123,7 @@ def __get_month_desc(start: dt.date, end: dt.date) -> str:
    return __get_from_to_desc(start_text, __format_month(end))
-def __get_day_desc(start: dt.date, end: dt.date) -> str:
+def __get_day_desc(start: date, end: date) -> str:
    """Returns the description as a day range.
    :param start: The start of the period.
@ -142,7 +142,7 @@ def __get_day_desc(start: dt.date, end: dt.date) -> str:
    return __get_from_to_desc(start_text, __format_day(end))
-def __format_month(month: dt.date) -> str:
+def __format_month(month: date) -> str:
    """Formats a month.
    :param month: The month.
@ -151,7 +151,7 @@ def __format_month(month: dt.date) -> str:
    return f"{month.year}/{month.month}"
-def __format_day(day: dt.date) -> str:
+def __format_day(day: date) -> str:
    """Formats a day.
    :param day: The day.
--- a/src/accounting/report/period/month_end.py
+++ b/src/accounting/report/period/month_end.py
@ -18,14 +18,14 @@
 """
 import calendar
-import datetime as dt
+from datetime import date
-def month_end(day: dt.date) -> dt.date:
+def month_end(day: date) -> date:
    """Returns the end day of month for a date.
    :param day: The date.
    :return: The end day of the month of that day.
    """
    last_day: int = calendar.monthrange(day.year, day.month)[1]
-    return dt.date(day.year, day.month, last_day)
+    return date(day.year, day.month, last_day)
--- a/src/accounting/report/period/parser.py
+++ b/src/accounting/report/period/parser.py
@ -18,10 +18,9 @@
 """
 import calendar
 import datetime as dt
 import re
-from collections.abc import Callable
+import typing as t
-from typing import Type
+from datetime import date
 from .period import Period
 from .shortcuts import ThisMonth, LastMonth, SinceLastMonth, ThisYear, \
@ -40,7 +39,7 @@ def get_period(spec: str | None = None) -> Period:
    """
    if spec is None:
        return ThisMonth()
-    named_periods: dict[str, Type[Callable[[], Period]]] = {
+    named_periods: dict[str, t.Type[t.Callable[[], Period]]] = {
        "this-month": lambda: ThisMonth(),
        "last-month": lambda: LastMonth(),
        "since-last-month": lambda: SinceLastMonth(),
@ -58,7 +57,7 @@ def get_period(spec: str | None = None) -> Period:
    return Period(start, end)
-def __parse_spec(text: str) -> tuple[dt.date | None, dt.date | None]:
+def __parse_spec(text: str) -> tuple[date | None, date | None]:
    """Parses the period specification.
    :param text: The period specification.
@ -85,7 +84,7 @@ def __parse_spec(text: str) -> tuple[dt.date | None, dt.date | None]:
    raise ValueError
-def __get_start(year: str, month: str | None, day: str | None) -> dt.date:
+def __get_start(year: str, month: str | None, day: str | None) -> date:
    """Returns the start of the period from the date representation.
    :param year: The year.
@ -95,13 +94,13 @@ def __get_start(year: str, month: str | None, day: str | None) -> dt.date:
    :raise ValueError: When the date is invalid.
    """
    if day is not None:
-        return dt.date(int(year), int(month), int(day))
+        return date(int(year), int(month), int(day))
    if month is not None:
-        return dt.date(int(year), int(month), 1)
+        return date(int(year), int(month), 1)
-    return dt.date(int(year), 1, 1)
+    return date(int(year), 1, 1)
-def __get_end(year: str, month: str | None, day: str | None) -> dt.date:
+def __get_end(year: str, month: str | None, day: str | None) -> date:
    """Returns the end of the period from the date representation.
    :param year: The year.
@ -111,10 +110,10 @@ def __get_end(year: str, month: str | None, day: str | None) -> dt.date:
    :raise ValueError: When the date is invalid.
    """
    if day is not None:
-        return dt.date(int(year), int(month), int(day))
+        return date(int(year), int(month), int(day))
    if month is not None:
        year_n: int = int(year)
        month_n: int = int(month)
        day_n: int = calendar.monthrange(year_n, month_n)[1]
-        return dt.date(year_n, month_n, day_n)
+        return date(year_n, month_n, day_n)
-    return dt.date(int(year), 12, 31)
+    return date(int(year), 12, 31)
--- a/src/accounting/report/period/period.py
+++ b/src/accounting/report/period/period.py
@ -20,8 +20,8 @@ This file is largely taken from the NanoParma ERP project, first written in
 2021/9/16 by imacat (imacat@nanoparma.com).
 """
-import datetime as dt
+import typing as t
-from typing import Self
+from datetime import date, timedelta
 from .description import get_desc
 from .month_end import month_end
@ -31,18 +31,18 @@ from .specification import get_spec
 class Period:
    """A date period."""
-    def __init__(self, start: dt.date | None, end: dt.date | None):
+    def __init__(self, start: date | None, end: date | None):
        """Constructs a new date period.
        :param start: The start date, or None from the very beginning.
        :param end: The end date, or None till no end.
        """
-        self.start: dt.date | None = start
+        self.start: date | None = start
        """The start of the period."""
-        self.end: dt.date | None = end
+        self.end: date | None = end
        """The end of the period."""
        self.is_default: bool = False
-        """Whether this is the default period."""
+        """Whether the is the default period."""
        self.is_this_month: bool = False
        """Whether the period is this month."""
        self.is_last_month: bool = False
@ -95,8 +95,8 @@ class Period:
        self.is_a_month = self.start.day == 1 \
            and self.end == month_end(self.start)
        self.is_type_month = self.is_a_month
-        self.is_a_year = self.start == dt.date(self.start.year, 1, 1) \
+        self.is_a_year = self.start == date(self.start.year, 1, 1) \
-            and self.end == dt.date(self.start.year, 12, 31)
+            and self.end == date(self.start.year, 12, 31)
        self.is_a_day = self.start == self.end
    def is_year(self, year: int) -> bool:
@ -119,11 +119,11 @@ class Period:
            and not self.is_a_day
    @property
-    def before(self) -> Self | None:
+    def before(self) -> t.Self | None:
        """Returns the period before this period.
        :return: The period before this period.
        """
        if self.start is None:
            return None
-        return Period(None, self.start - dt.timedelta(days=1))
+        return Period(None, self.start - timedelta(days=1))
--- a/src/accounting/report/period/shortcuts.py
+++ b/src/accounting/report/period/shortcuts.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/4
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -17,10 +17,9 @@
 """The named shortcut periods.
 """
-import datetime as dt
+from datetime import date, timedelta
 from accounting.locale import gettext
 from accounting.utils.timezone import get_tz_today
 from .month_end import month_end
 from .period import Period
@ -28,8 +27,8 @@ from .period import Period
 class ThisMonth(Period):
    """The period of this month."""
    def __init__(self):
-        today: dt.date = get_tz_today()
+        today: date = date.today()
-        this_month_start: dt.date = dt.date(today.year, today.month, 1)
+        this_month_start: date = date(today.year, today.month, 1)
        super().__init__(this_month_start, month_end(today))
        self.is_default = True
        self.is_this_month = True
@ -44,13 +43,13 @@ class ThisMonth(Period):
 class LastMonth(Period):
    """The period of this month."""
    def __init__(self):
-        today: dt.date = get_tz_today()
+        today: date = date.today()
        year: int = today.year
        month: int = today.month - 1
        if month < 1:
            year = year - 1
            month = 12
-        start: dt.date = dt.date(year, month, 1)
+        start: date = date(year, month, 1)
        super().__init__(start, month_end(start))
        self.is_last_month = True
@ -64,13 +63,13 @@ class LastMonth(Period):
 class SinceLastMonth(Period):
    """The period of this month."""
    def __init__(self):
-        today: dt.date = get_tz_today()
+        today: date = date.today()
        year: int = today.year
        month: int = today.month - 1
        if month < 1:
            year = year - 1
            month = 12
-        start: dt.date = dt.date(year, month, 1)
+        start: date = date(year, month, 1)
        super().__init__(start, None)
        self.is_since_last_month = True
@ -83,9 +82,9 @@ class SinceLastMonth(Period):
 class ThisYear(Period):
    """The period of this year."""
    def __init__(self):
-        year: int = get_tz_today().year
+        year: int = date.today().year
-        start: dt.date = dt.date(year, 1, 1)
+        start: date = date(year, 1, 1)
-        end: dt.date = dt.date(year, 12, 31)
+        end: date = date(year, 12, 31)
        super().__init__(start, end)
        self.is_this_year = True
@ -98,9 +97,9 @@ class ThisYear(Period):
 class LastYear(Period):
    """The period of last year."""
    def __init__(self):
-        year: int = get_tz_today().year
+        year: int = date.today().year
-        start: dt.date = dt.date(year - 1, 1, 1)
+        start: date = date(year - 1, 1, 1)
-        end: dt.date = dt.date(year - 1, 12, 31)
+        end: date = date(year - 1, 12, 31)
        super().__init__(start, end)
        self.is_last_year = True
@ -113,7 +112,7 @@ class LastYear(Period):
 class Today(Period):
    """The period of today."""
    def __init__(self):
-        today: dt.date = get_tz_today()
+        today: date = date.today()
        super().__init__(today, today)
        self.is_today = True
@ -126,7 +125,7 @@ class Today(Period):
 class Yesterday(Period):
    """The period of yesterday."""
    def __init__(self):
-        yesterday: dt.date = get_tz_today() - dt.timedelta(days=1)
+        yesterday: date = date.today() - timedelta(days=1)
        super().__init__(yesterday, yesterday)
        self.is_yesterday = True
@ -164,6 +163,6 @@ class YearPeriod(Period):
        :param year: The year.
        """
-        start: dt.date = dt.date(year, 1, 1)
+        start: date = date(year, 1, 1)
-        end: dt.date = dt.date(year, 12, 31)
+        end: date = date(year, 12, 31)
        super().__init__(start, end)
--- a/src/accounting/report/period/specification.py
+++ b/src/accounting/report/period/specification.py
@ -17,10 +17,10 @@
 """The period specification composer.
 """
-import datetime as dt
+from datetime import date, timedelta
-def get_spec(start: dt.date | None, end: dt.date | None) -> str:
+def get_spec(start: date | None, end: date | None) -> str:
    """Returns the period specification.
    :param start: The start of the period.
@ -44,7 +44,7 @@ def get_spec(start: dt.date | None, end: dt.date | None) -> str:
    return __get_day_spec(start, end)
-def __get_since_spec(start: dt.date) -> str:
+def __get_since_spec(start: date) -> str:
    """Returns the period specification without the end day.
    :param start: The start of the period.
@ -57,7 +57,7 @@ def __get_since_spec(start: dt.date) -> str:
    return start.strftime("%Y-%m-%d-")
-def __get_until_spec(end: dt.date) -> str:
+def __get_until_spec(end: date) -> str:
    """Returns the period specification without the start day.
    :param end: The end of the period.
@ -65,12 +65,12 @@ def __get_until_spec(end: dt.date) -> str:
    """
    if end.month == 12 and end.day == 31:
        return end.strftime("-%Y")
-    if (end + dt.timedelta(days=1)).day == 1:
+    if (end + timedelta(days=1)).day == 1:
        return end.strftime("-%Y-%m")
    return end.strftime("-%Y-%m-%d")
-def __get_year_spec(start: dt.date, end: dt.date) -> str:
+def __get_year_spec(start: date, end: date) -> str:
    """Returns the period specification as a year range.
    :param start: The start of the period.
@ -88,7 +88,7 @@ def __get_year_spec(start: dt.date, end: dt.date) -> str:
    return f"{start_spec}-{end_spec}"
-def __get_month_spec(start: dt.date, end: dt.date) -> str:
+def __get_month_spec(start: date, end: date) -> str:
    """Returns the period specification as a month range.
    :param start: The start of the period.
@ -96,7 +96,7 @@ def __get_month_spec(start: dt.date, end: dt.date) -> str:
    :return: The period specification as a month range.
    :raise ValueError: The period is not a month range.
    """
-    if start.day != 1 or (end + dt.timedelta(days=1)).day != 1:
+    if start.day != 1 or (end + timedelta(days=1)).day != 1:
        raise ValueError
    start_spec: str = start.strftime("%Y-%m")
    if start.year == end.year and start.month == end.month:
@ -105,7 +105,7 @@ def __get_month_spec(start: dt.date, end: dt.date) -> str:
    return f"{start_spec}-{end_spec}"
-def __get_day_spec(start: dt.date, end: dt.date) -> str:
+def __get_day_spec(start: date, end: date) -> str:
    """Returns the period specification as a day range.
    :param start: The start of the period.
--- a/src/accounting/report/reports/balance_sheet.py
+++ b/src/accounting/report/reports/balance_sheet.py
@ -145,7 +145,6 @@ class AccountCollector:
            .filter(sa.or_(Account.id.in_({x.id for x in account_balances}),
                           Account.base_code == "3351",
                           Account.base_code == "3353")).all()
        """The accounts."""
        account_by_id: dict[int, Account] \
            = {x.id: x for x in self.__all_accounts}
        self.accounts: list[ReportAccount] \
@ -155,7 +154,6 @@ class AccountCollector:
                                            account_by_id[x.id],
                                            self.__period))
               for x in account_balances]
        """The accounts on the balance sheet."""
        self.__add_accumulated()
        self.__add_current_period()
        self.accounts.sort(key=lambda x: (x.account.base_code, x.account.no))
@ -454,11 +452,11 @@ class BalanceSheet(BaseReport):
        :return: The CSV rows for the section.
        """
        rows: list[CSVHalfRow] \
-            = [CSVHalfRow(section.title.title, None)]
+            = [CSVHalfRow(section.title.title.title(), None)]
        for subsection in section.subsections:
-            rows.append(CSVHalfRow(f" {subsection.title.title}", None))
+            rows.append(CSVHalfRow(f" {subsection.title.title.title()}", None))
            for account in subsection.accounts:
-                rows.append(CSVHalfRow(f"  {str(account.account)}",
+                rows.append(CSVHalfRow(f"  {str(account.account).title()}",
                                       account.amount))
        return rows
--- a/src/accounting/report/reports/income_expenses.py
+++ b/src/accounting/report/reports/income_expenses.py
@ -17,7 +17,7 @@
 """The income and expenses log.
 """
-import datetime as dt
+from datetime import date
 from decimal import Decimal
 import sqlalchemy as sa
@ -37,6 +37,7 @@ from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.urls import income_expenses_url
 from accounting.utils.cast import be
 from accounting.utils.current_account import CurrentAccount
 from accounting.utils.pagination import Pagination
@ -53,7 +54,7 @@ class ReportLineItem:
        """Whether this is the brought-forward line item."""
        self.is_total: bool = False
        """Whether this is the total line item."""
-        self.date: dt.date | None = None
+        self.date: date | None = None
        """The date."""
        self.account: Account | None = None
        """The account."""
@ -121,7 +122,8 @@ class LineItemCollector:
            else_=-JournalEntryLineItem.amount))
        select: sa.Select = sa.Select(balance_func)\
            .join(JournalEntry).join(Account)\
-            .filter(JournalEntryLineItem.currency_code == self.__currency.code,
+            .filter(be(JournalEntryLineItem.currency_code
                       == self.__currency.code),
                    self.__account_condition,
                    JournalEntry.date < self.__period.start)
        balance: int | None = db.session.scalar(select)
@ -213,7 +215,7 @@ class LineItemCollector:
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
-    def __init__(self, date: dt.date | str | None,
+    def __init__(self, journal_entry_date: date | str | None,
                 account: str | None,
                 description: str | None,
                 income: str | Decimal | None,
@ -222,7 +224,7 @@ class CSVRow(BaseCSVRow):
                 note: str | None):
        """Constructs a row in the CSV.
-        :param date: The journal entry date.
+        :param journal_entry_date: The journal entry date.
        :param account: The account.
        :param description: The description.
        :param income: The income.
@ -230,7 +232,7 @@ class CSVRow(BaseCSVRow):
        :param balance: The balance.
        :param note: The note.
        """
-        self.date: dt.date | str | None = date
+        self.date: date | str | None = journal_entry_date
        """The date."""
        self.account: str | None = account
        """The account."""
@ -345,7 +347,8 @@ class PageParams(BasePageParams):
                          self.account.id == 0)]
        in_use: sa.Select = sa.Select(JournalEntryLineItem.account_id)\
            .join(Account)\
-            .filter(JournalEntryLineItem.currency_code == self.currency.code,
+            .filter(be(JournalEntryLineItem.currency_code
                       == self.currency.code),
                    CurrentAccount.sql_condition())\
            .group_by(JournalEntryLineItem.account_id)
        options.extend([OptionLink(str(x),
@ -407,13 +410,13 @@ class IncomeExpenses(BaseReport):
                                     gettext("Note"))]
        if self.__brought_forward is not None:
            rows.append(CSVRow(self.__brought_forward.date,
-                               str(self.__brought_forward.account),
+                               str(self.__brought_forward.account).title(),
                               self.__brought_forward.description,
                               self.__brought_forward.income,
                               self.__brought_forward.expense,
                               self.__brought_forward.balance,
                               None))
-        rows.extend([CSVRow(x.date, str(x.account), x.description,
+        rows.extend([CSVRow(x.date, str(x.account).title(), x.description,
                            x.income, x.expense, x.balance, x.note)
                     for x in self.__line_items])
        if self.__total is not None:
--- a/src/accounting/report/reports/income_statement.py
+++ b/src/accounting/report/reports/income_statement.py
@ -106,7 +106,6 @@ class Section:
        """The subsections in the section."""
        self.accumulated: AccumulatedTotal \
            = AccumulatedTotal(accumulated_title)
        """The accumulated total."""
    @property
    def total(self) -> Decimal:
@ -226,12 +225,12 @@ class IncomeStatement(BaseReport):
                                          for x in balances})).all()
        total_titles: dict[str, str] \
-            = {"4": gettext("Total Operating Revenue"),
+            = {"4": gettext("total operating revenue"),
-               "5": gettext("Gross Income"),
+               "5": gettext("gross income"),
-               "6": gettext("Operating Income"),
+               "6": gettext("operating income"),
-               "7": gettext("Before Tax Income"),
+               "7": gettext("before tax income"),
-               "8": gettext("After Tax Income"),
+               "8": gettext("after tax income"),
-               "9": gettext("Net Income or Loss for Current Period")}
+               "9": gettext("net income or loss for current period")}
        sections: dict[str, Section] \
            = {x.code: Section(x, total_titles[x.code]) for x in titles}
@ -301,14 +300,14 @@ class IncomeStatement(BaseReport):
        total_str: str = gettext("Total")
        rows: list[CSVRow] = [CSVRow(None, gettext("Amount"))]
        for section in self.__sections:
-            rows.append(CSVRow(str(section.title), None))
+            rows.append(CSVRow(str(section.title).title(), None))
            for subsection in section.subsections:
-                rows.append(CSVRow(f" {str(subsection.title)}", None))
+                rows.append(CSVRow(f" {str(subsection.title).title()}", None))
                for account in subsection.accounts:
-                    rows.append(CSVRow(f"  {str(account.account)}",
+                    rows.append(CSVRow(f"  {str(account.account).title()}",
                                       account.amount))
                rows.append(CSVRow(f" {total_str}", subsection.total))
-            rows.append(CSVRow(section.accumulated.title,
+            rows.append(CSVRow(section.accumulated.title.title(),
                               section.accumulated.amount))
            rows.append(CSVRow(None, None))
        rows = rows[:-1]
--- a/src/accounting/report/reports/journal.py
+++ b/src/accounting/report/reports/journal.py
@ -17,7 +17,7 @@
 """The journal.
 """
-import datetime as dt
+from datetime import date
 from decimal import Decimal
 import sqlalchemy as sa
@ -67,7 +67,7 @@ class ReportLineItem:
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
-    def __init__(self, journal_entry_date: str | dt.date,
+    def __init__(self, journal_entry_date: str | date,
                 currency: str,
                 account: str,
                 description: str | None,
@ -77,14 +77,12 @@ class CSVRow(BaseCSVRow):
        """Constructs a row in the CSV.
        :param journal_entry_date: The journal entry date.
        :param currency: The currency.
        :param account: The account.
        :param description: The description.
        :param debit: The debit amount.
        :param credit: The credit amount.
        :param note: The note.
        """
-        self.date: str | dt.date = journal_entry_date
+        self.date: str | date = journal_entry_date
        """The date."""
        self.currency: str = currency
        """The currency."""
@ -118,7 +116,6 @@ class PageParams(BasePageParams):
        """Constructs the HTML page parameters.
        :param period: The period.
        :param pagination: The pagination.
        :param line_items: The line items.
        """
        self.period: Period = period
@ -160,7 +157,7 @@ def get_csv_rows(line_items: list[JournalEntryLineItem]) -> list[CSVRow]:
                                 gettext("Debit"), gettext("Credit"),
                                 gettext("Note"))]
    rows.extend([CSVRow(x.journal_entry.date, x.currency.code,
-                        str(x.account), x.description,
+                        str(x.account).title(), x.description,
                        x.debit, x.credit, x.journal_entry.note)
                 for x in line_items])
    return rows
--- a/src/accounting/report/reports/ledger.py
+++ b/src/accounting/report/reports/ledger.py
@ -17,7 +17,7 @@
 """The ledger.
 """
-import datetime as dt
+from datetime import date
 from decimal import Decimal
 import sqlalchemy as sa
@ -37,6 +37,7 @@ from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.urls import ledger_url
 from accounting.utils.cast import be
 from accounting.utils.pagination import Pagination
@ -52,7 +53,7 @@ class ReportLineItem:
        """Whether this is the brought-forward line item."""
        self.is_total: bool = False
        """Whether this is the total line item."""
-        self.date: dt.date | None = None
+        self.date: date | None = None
        """The date."""
        self.description: str | None = None
        """The description."""
@ -117,8 +118,10 @@ class LineItemCollector:
            (JournalEntryLineItem.is_debit, JournalEntryLineItem.amount),
            else_=-JournalEntryLineItem.amount))
        select: sa.Select = sa.Select(balance_func).join(JournalEntry)\
-            .filter(JournalEntryLineItem.currency_code == self.__currency.code,
+            .filter(be(JournalEntryLineItem.currency_code
-                    JournalEntryLineItem.account_id == self.__account.id,
+                       == self.__currency.code),
                    be(JournalEntryLineItem.account_id
                       == self.__account.id),
                    JournalEntry.date < self.__period.start)
        balance: int | None = db.session.scalar(select)
        if balance is None:
@ -196,7 +199,7 @@ class LineItemCollector:
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
-    def __init__(self, date: dt.date | str | None,
+    def __init__(self, journal_entry_date: date | str | None,
                 description: str | None,
                 debit: str | Decimal | None,
                 credit: str | Decimal | None,
@ -204,14 +207,14 @@ class CSVRow(BaseCSVRow):
                 note: str | None):
        """Constructs a row in the CSV.
-        :param date: The journal entry date.
+        :param journal_entry_date: The journal entry date.
        :param description: The description.
        :param debit: The debit amount.
        :param credit: The credit amount.
        :param balance: The balance.
        :param note: The note.
        """
-        self.date: dt.date | str | None = date
+        self.date: date | str | None = journal_entry_date
        """The date."""
        self.description: str | None = description
        """The description."""
@ -310,7 +313,8 @@ class PageParams(BasePageParams):
        :return: The account options.
        """
        in_use: sa.Select = sa.Select(JournalEntryLineItem.account_id)\
-            .filter(JournalEntryLineItem.currency_code == self.currency.code)\
+            .filter(be(JournalEntryLineItem.currency_code
                       == self.currency.code))\
            .group_by(JournalEntryLineItem.account_id)
        return [OptionLink(str(x), ledger_url(self.currency, x, self.period),
                           x.id == self.account.id)
--- a/src/accounting/report/reports/search.py
+++ b/src/accounting/report/reports/search.py
@ -17,7 +17,7 @@
 """The search.
 """
-import datetime as dt
+from datetime import datetime
 from decimal import Decimal
 import sqlalchemy as sa
@ -32,6 +32,7 @@ from accounting.report.utils.base_report import BaseReport
 from accounting.report.utils.csv_export import csv_download
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.utils.cast import be
 from accounting.utils.pagination import Pagination
 from accounting.utils.query import parse_query_keywords
 from .journal import get_csv_rows
@ -124,33 +125,30 @@ class LineItemCollector:
        """
        conditions: list[sa.BinaryExpression] \
            = [JournalEntry.note.icontains(k)]
-        date: dt.datetime
+        journal_entry_date: datetime
        try:
-            date = dt.datetime.strptime(k, "%Y")
+            journal_entry_date = datetime.strptime(k, "%Y")
            conditions.append(
-                sa.extract("year", JournalEntry.date) == date.year)
+                be(sa.extract("year", JournalEntry.date)
                   == journal_entry_date.year))
        except ValueError:
            pass
        try:
-            date = dt.datetime.strptime(k, "%Y/%m")
+            journal_entry_date = datetime.strptime(k, "%Y/%m")
            conditions.append(sa.and_(
-                sa.extract("year", JournalEntry.date) == date.year,
+                sa.extract("year", JournalEntry.date)
-                sa.extract("month", JournalEntry.date) == date.month))
+                == journal_entry_date.year,
                sa.extract("month", JournalEntry.date)
                == journal_entry_date.month))
        except ValueError:
            pass
        try:
-            date = dt.datetime.strptime(f"2000/{k}", "%Y/%m/%d")
+            journal_entry_date = datetime.strptime(f"2000/{k}", "%Y/%m/%d")
            conditions.append(sa.and_(
-                sa.extract("month", JournalEntry.date) == date.month,
+                sa.extract("month", JournalEntry.date)
-                sa.extract("day", JournalEntry.date) == date.day))
+                == journal_entry_date.month,
-        except ValueError:
+                sa.extract("day", JournalEntry.date)
-            pass
+                == journal_entry_date.day))
        try:
            date = dt.datetime.strptime(k, "%Y/%m/%d")
            conditions.append(sa.and_(
                sa.extract("year", JournalEntry.date) == date.year,
                sa.extract("month", JournalEntry.date) == date.month,
                sa.extract("day", JournalEntry.date) == date.day))
        except ValueError:
            pass
        return sa.select(JournalEntry.id).filter(sa.or_(*conditions))
--- a/src/accounting/report/reports/trial_balance.py
+++ b/src/accounting/report/reports/trial_balance.py
@ -224,7 +224,7 @@ class TrialBalance(BaseReport):
        """
        rows: list[CSVRow] = [CSVRow(gettext("Account"), gettext("Debit"),
                                     gettext("Credit"))]
-        rows.extend([CSVRow(str(x.account), x.debit, x.credit)
+        rows.extend([CSVRow(str(x.account).title(), x.debit, x.credit)
                     for x in self.__accounts])
        rows.append(CSVRow(gettext("Total"), self.__total.debit,
                           self.__total.credit))
--- a/src/accounting/report/reports/unapplied.py
+++ b/src/accounting/report/reports/unapplied.py
@ -1,216 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/7
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The unapplied original line items.
 """
 import datetime as dt
 from decimal import Decimal
 from flask import render_template, Response
 from sqlalchemy.orm import selectinload
 from accounting.locale import gettext
 from accounting.models import Currency, Account, JournalEntry, \
    JournalEntryLineItem
 from accounting.report.utils.base_page_params import BasePageParams
 from accounting.report.utils.base_report import BaseReport
 from accounting.report.utils.csv_export import BaseCSVRow, csv_download
 from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.unapplied import get_accounts_with_unapplied, \
    get_net_balances
 from accounting.report.utils.urls import unapplied_url
 from accounting.utils.pagination import Pagination
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
    def __init__(self, journal_entry_date: str | dt.date, currency: str,
                 description: str | None, amount: str | Decimal,
                 net_balance: str | Decimal):
        """Constructs a row in the CSV.
        :param journal_entry_date: The journal entry date.
        :param currency: The currency.
        :param description: The description.
        :param amount: The amount.
        :param net_balance: The net balance.
        """
        self.date: str | dt.date = journal_entry_date
        """The date."""
        self.currency: str = currency
        """The currency."""
        self.description: str | None = description
        """The description."""
        self.amount: str | Decimal = amount
        """The amount."""
        self.net_balance: str | Decimal = net_balance
        """The net balance."""
    @property
    def values(self) -> list[str | dt.date | Decimal | None]:
        """Returns the values of the row.
        :return: The values of the row.
        """
        return [self.date, self.currency, self.description, self.amount,
                self.net_balance]
 class PageParams(BasePageParams):
    """The HTML page parameters."""
    def __init__(self, currency: Currency,
                 account: Account,
                 pagination: Pagination[JournalEntryLineItem],
                 line_items: list[JournalEntryLineItem]):
        """Constructs the HTML page parameters.
        :param currency: The currency.
        :param account: The account.
        :param pagination: The pagination.
        :param line_items: The line items.
        """
        self.currency: Currency = currency
        """The currency."""
        self.account: Account = account
        """The account."""
        self.pagination: Pagination[JournalEntryLineItem] = pagination
        """The pagination."""
        self.line_items: list[JournalEntryLineItem] = line_items
        """The line items."""
    @property
    def has_data(self) -> bool:
        """Returns whether there is any data on the page.
        :return: True if there is any data, or False otherwise.
        """
        return len(self.line_items) > 0
    @property
    def report_chooser(self) -> ReportChooser:
        """Returns the report chooser.
        :return: The report chooser.
        """
        return ReportChooser(ReportType.UNAPPLIED, currency=self.currency,
                             account=self.account)
    @property
    def currency_options(self) -> list[OptionLink]:
        """Returns the currency options.
        :return: The currency options.
        """
        return self._get_currency_options(
            lambda x: unapplied_url(x, self.account), self.currency)
    @property
    def account_options(self) -> list[OptionLink]:
        """Returns the account options.
        :return: The account options.
        """
        options: list[OptionLink] \
            = [OptionLink(gettext("Accounts"),
                          unapplied_url(self.currency, None),
                          False)]
        options.extend(
            [OptionLink(str(x), unapplied_url(self.currency, x),
                        x.id == self.account.id)
             for x in get_accounts_with_unapplied(self.currency)])
        return options
 def get_csv_rows(line_items: list[JournalEntryLineItem]) -> list[CSVRow]:
    """Composes and returns the CSV rows from the line items.
    :param line_items: The line items.
    :return: The CSV rows.
    """
    rows: list[CSVRow] = [CSVRow(gettext("Date"), gettext("Currency"),
                                 gettext("Description"), gettext("Amount"),
                                 gettext("Net Balance"))]
    rows.extend([CSVRow(x.journal_entry.date, x.currency.code,
                        x.description, x.amount, x.net_balance)
                 for x in line_items])
    return rows
 class UnappliedOriginalLineItems(BaseReport):
    """The unapplied original line items."""
    def __init__(self, currency: Currency, account: Account):
        """Constructs the unapplied original line items.
        :param currency: The currency.
        :param account: The account.
        """
        self.__currency: Currency = currency
        """The currency."""
        self.__account: Account = account
        """The account."""
        self.__line_items: list[JournalEntryLineItem] \
            = self.__query_line_items()
        """The line items."""
    def __query_line_items(self) -> list[JournalEntryLineItem]:
        """Queries and returns the line items.
        :return: The line items.
        """
        net_balances: dict[int, Decimal | None] \
            = get_net_balances(self.__currency, self.__account)
        line_items: list[JournalEntryLineItem] = JournalEntryLineItem.query \
            .join(Account).join(JournalEntry) \
            .filter(JournalEntryLineItem.id.in_(net_balances)) \
            .order_by(JournalEntry.date, JournalEntry.no,
                      JournalEntryLineItem.is_debit, JournalEntryLineItem.no) \
            .options(selectinload(JournalEntryLineItem.currency),
                     selectinload(JournalEntryLineItem.journal_entry)).all()
        for line_item in line_items:
            line_item.net_balance = line_item.amount \
                if net_balances[line_item.id] is None \
                else net_balances[line_item.id]
        return line_items
    def csv(self) -> Response:
        """Returns the report as CSV for download.
        :return: The response of the report for download.
        """
        filename: str = "unapplied-{currency}-{account}.csv"\
            .format(currency=self.__currency.code, account=self.__account.code)
        return csv_download(filename, get_csv_rows(self.__line_items))
    def html(self) -> str:
        """Composes and returns the report as HTML.
        :return: The report as HTML.
        """
        pagination: Pagination[JournalEntryLineItem] \
            = Pagination[JournalEntryLineItem](self.__line_items,
                                               is_reversed=True)
        params: PageParams = PageParams(currency=self.__currency,
                                        account=self.__account,
                                        pagination=pagination,
                                        line_items=pagination.list)
        return render_template("accounting/report/unapplied.html",
                               report=params)
--- a/src/accounting/report/reports/unapplied_accounts.py
+++ b/src/accounting/report/reports/unapplied_accounts.py
@ -1,155 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/7
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The accounts with unapplied original line items.
 """
 import datetime as dt
 from decimal import Decimal
 from flask import render_template, Response
 from accounting.locale import gettext
 from accounting.models import Currency, Account
 from accounting.report.utils.base_page_params import BasePageParams
 from accounting.report.utils.base_report import BaseReport
 from accounting.report.utils.csv_export import BaseCSVRow, csv_download
 from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.unapplied import get_accounts_with_unapplied
 from accounting.report.utils.urls import unapplied_url
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
    def __init__(self, account: str, count: int | str):
        """Constructs a row in the CSV.
        :param account: The account.
        :param count: The number of unapplied original line items.
        """
        self.account: str = account
        """The currency."""
        self.count: int | str = count
        """The number of unapplied original line items."""
    @property
    def values(self) -> list[str | dt.date | Decimal | None]:
        """Returns the values of the row.
        :return: The values of the row.
        """
        return [self.account, self.count]
 class PageParams(BasePageParams):
    """The HTML page parameters."""
    def __init__(self, currency: Currency, accounts: list[Account]):
        """Constructs the HTML page parameters.
        :param currency: The currency.
        :param accounts: The accounts.
        """
        self.currency: Currency = currency
        """The currency."""
        self.accounts: list[Account] = accounts
        """The accounts."""
    @property
    def has_data(self) -> bool:
        """Returns whether there is any data on the page.
        :return: True if there is any data, or False otherwise.
        """
        return len(self.accounts) > 0
    @property
    def report_chooser(self) -> ReportChooser:
        """Returns the report chooser.
        :return: The report chooser.
        """
        return ReportChooser(ReportType.UNAPPLIED, currency=self.currency,
                             account=None)
    @property
    def currency_options(self) -> list[OptionLink]:
        """Returns the currency options.
        :return: The currency options.
        """
        return self._get_currency_options(lambda x: unapplied_url(x, None),
                                          self.currency)
    @property
    def account_options(self) -> list[OptionLink]:
        """Returns the account options.
        :return: The account options.
        """
        options: list[OptionLink] \
            = [OptionLink(gettext("Accounts"),
                          unapplied_url(self.currency, None),
                          True)]
        options.extend(
            [OptionLink(str(x), unapplied_url(self.currency, x), False)
             for x in self.accounts])
        return options
 def get_csv_rows(accounts: list[Account]) -> list[CSVRow]:
    """Composes and returns the CSV rows from the line items.
    :param accounts: The accounts.
    :return: The CSV rows.
    """
    rows: list[CSVRow] = [CSVRow(gettext("Account"), gettext("Count"))]
    rows.extend([CSVRow(str(x), x.count) for x in accounts])
    return rows
 class AccountsWithUnappliedOriginalLineItems(BaseReport):
    """The accounts with unapplied original line items."""
    def __init__(self, currency: Currency):
        """Constructs the outstanding balances.
        :param currency: The currency.
        """
        self.__currency: Currency = currency
        """The currency."""
        self.__accounts: list[Account] = get_accounts_with_unapplied(currency)
        """The accounts."""
    def csv(self) -> Response:
        """Returns the report as CSV for download.
        :return: The response of the report for download.
        """
        filename: str = "unapplied-accounts.csv"
        return csv_download(filename, get_csv_rows(self.__accounts))
    def html(self) -> str:
        """Composes and returns the report as HTML.
        :return: The report as HTML.
        """
        return render_template("accounting/report/unapplied-accounts.html",
                               report=PageParams(currency=self.__currency,
                                                 accounts=self.__accounts))
--- a/src/accounting/report/reports/unmatched.py
+++ b/src/accounting/report/reports/unmatched.py
@ -1,214 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/17
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The unmatched offsets.
 """
 import datetime as dt
 from decimal import Decimal
 from flask import render_template, Response
 from flask_babel import LazyString
 from accounting.locale import gettext
 from accounting.models import Currency, Account, JournalEntryLineItem
 from accounting.report.utils.base_page_params import BasePageParams
 from accounting.report.utils.base_report import BaseReport
 from accounting.report.utils.csv_export import BaseCSVRow, csv_download
 from accounting.report.utils.offset_matcher import OffsetMatcher, OffsetPair
 from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.unmatched import get_accounts_with_unmatched
 from accounting.report.utils.urls import unmatched_url
 from accounting.utils.pagination import Pagination
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
    def __init__(self, journal_entry_date: str | dt.date, currency: str,
                 description: str | None, debit: str | Decimal,
                 credit: str | Decimal, balance: str | Decimal):
        """Constructs a row in the CSV.
        :param journal_entry_date: The journal entry date.
        :param currency: The currency.
        :param description: The description.
        :param debit: The debit amount.
        :param credit: The credit amount.
        :param balance: The balance.
        """
        self.date: str | dt.date = journal_entry_date
        """The date."""
        self.currency: str = currency
        """The currency."""
        self.description: str | None = description
        """The description."""
        self.debit: str | Decimal | None = debit
        """The debit amount."""
        self.credit: str | Decimal | None = credit
        """The credit amount."""
        self.balance: str | Decimal = balance
        """The balance."""
    @property
    def values(self) -> list[str | dt.date | Decimal | None]:
        """Returns the values of the row.
        :return: The values of the row.
        """
        return [self.date, self.currency, self.description, self.debit,
                self.credit, self.balance]
 class PageParams(BasePageParams):
    """The HTML page parameters."""
    def __init__(self, currency: Currency,
                 account: Account,
                 match_status: str | LazyString,
                 matched_pairs: list[OffsetPair],
                 pagination: Pagination[JournalEntryLineItem],
                 line_items: list[JournalEntryLineItem]):
        """Constructs the HTML page parameters.
        :param currency: The currency.
        :param account: The account.
        :param match_status: The match status message.
        :param matched_pairs: A list of matched pairs.
        :param pagination: The pagination.
        :param line_items: The line items.
        """
        self.currency: Currency = currency
        """The currency."""
        self.account: Account = account
        """The account."""
        self.match_status: str | LazyString = match_status
        """The match status message."""
        self.matched_pairs: list[OffsetPair] = matched_pairs
        """A list of matched pairs."""
        self.pagination: Pagination[JournalEntryLineItem] = pagination
        """The pagination."""
        self.line_items: list[JournalEntryLineItem] = line_items
        """The line items."""
    @property
    def has_data(self) -> bool:
        """Returns whether there is any data on the page.
        :return: True if there is any data, or False otherwise.
        """
        return len(self.line_items) > 0
    @property
    def report_chooser(self) -> ReportChooser:
        """Returns the report chooser.
        :return: The report chooser.
        """
        return ReportChooser(ReportType.UNMATCHED, currency=self.currency,
                             account=self.account)
    @property
    def currency_options(self) -> list[OptionLink]:
        """Returns the currency options.
        :return: The currency options.
        """
        return self._get_currency_options(
            lambda x: unmatched_url(x, self.account), self.currency)
    @property
    def account_options(self) -> list[OptionLink]:
        """Returns the account options.
        :return: The account options.
        """
        options: list[OptionLink] \
            = [OptionLink(gettext("Accounts"),
                          unmatched_url(self.currency, None),
                          False)]
        options.extend(
            [OptionLink(str(x), unmatched_url(self.currency, x),
                        x.id == self.account.id)
             for x in get_accounts_with_unmatched(self.currency)])
        return options
 def get_csv_rows(line_items: list[JournalEntryLineItem]) -> list[CSVRow]:
    """Composes and returns the CSV rows from the line items.
    :param line_items: The line items.
    :return: The CSV rows.
    """
    rows: list[CSVRow] = [CSVRow(gettext("Date"), gettext("Currency"),
                                 gettext("Description"), gettext("Debit"),
                                 gettext("Credit"), gettext("Balance"))]
    rows.extend([CSVRow(x.journal_entry.date, x.currency.code,
                        x.description, x.debit, x.credit, x.balance)
                 for x in line_items])
    return rows
 class UnmatchedOffsets(BaseReport):
    """The unmatched offsets."""
    def __init__(self, currency: Currency, account: Account):
        """Constructs the unmatched offsets.
        :param currency: The currency.
        :param account: The account.
        """
        self.__currency: Currency = currency
        """The currency."""
        self.__account: Account = account
        """The account."""
        offset_matcher: OffsetMatcher \
            = OffsetMatcher(self.__currency, self.__account)
        self.__line_items: list[JournalEntryLineItem] \
            = offset_matcher.line_items
        """The line items."""
        self.__match_status: str | LazyString = offset_matcher.status
        """The match status message."""
        self.__matched_pairs: list[OffsetPair] = offset_matcher.matched_pairs
        """A list of matched pairs."""
    def csv(self) -> Response:
        """Returns the report as CSV for download.
        :return: The response of the report for download.
        """
        filename: str = "unmatched-{currency}-{account}.csv"\
            .format(currency=self.__currency.code, account=self.__account.code)
        return csv_download(filename, get_csv_rows(self.__line_items))
    def html(self) -> str:
        """Composes and returns the report as HTML.
        :return: The report as HTML.
        """
        pagination: Pagination[JournalEntryLineItem] \
            = Pagination[JournalEntryLineItem](self.__line_items,
                                               is_reversed=True)
        params: PageParams = PageParams(currency=self.__currency,
                                        account=self.__account,
                                        match_status=self.__match_status,
                                        matched_pairs=self.__matched_pairs,
                                        pagination=pagination,
                                        line_items=pagination.list)
        return render_template("accounting/report/unmatched.html",
                               report=params)
--- a/src/accounting/report/reports/unmatched_accounts.py
+++ b/src/accounting/report/reports/unmatched_accounts.py
@ -1,156 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/17
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The accounts with unmatched offsets.
 """
 import datetime as dt
 from decimal import Decimal
 from flask import render_template, Response
 from accounting.locale import gettext
 from accounting.models import Currency, Account
 from accounting.report.utils.base_page_params import BasePageParams
 from accounting.report.utils.base_report import BaseReport
 from accounting.report.utils.csv_export import BaseCSVRow, csv_download
 from accounting.report.utils.option_link import OptionLink
 from accounting.report.utils.report_chooser import ReportChooser
 from accounting.report.utils.report_type import ReportType
 from accounting.report.utils.unmatched import get_accounts_with_unmatched
 from accounting.report.utils.urls import unmatched_url
 class CSVRow(BaseCSVRow):
    """A row in the CSV."""
    def __init__(self, account: str, count: int | str):
        """Constructs a row in the CSV.
        :param account: The account.
        :param count: The number of unapplied original line items.
        """
        self.account: str = account
        """The currency."""
        self.count: int | str = count
        """The number of unapplied original line items."""
    @property
    def values(self) -> list[str | dt.date | Decimal | None]:
        """Returns the values of the row.
        :return: The values of the row.
        """
        return [self.account, self.count]
 class PageParams(BasePageParams):
    """The HTML page parameters."""
    def __init__(self, currency: Currency, accounts: list[Account]):
        """Constructs the HTML page parameters.
        :param currency: The currency.
        :param accounts: The accounts.
        """
        self.currency: Currency = currency
        """The currency."""
        self.accounts: list[Account] = accounts
        """The accounts."""
    @property
    def has_data(self) -> bool:
        """Returns whether there is any data on the page.
        :return: True if there is any data, or False otherwise.
        """
        return len(self.accounts) > 0
    @property
    def report_chooser(self) -> ReportChooser:
        """Returns the report chooser.
        :return: The report chooser.
        """
        return ReportChooser(ReportType.UNMATCHED, currency=self.currency,
                             account=None)
    @property
    def currency_options(self) -> list[OptionLink]:
        """Returns the currency options.
        :return: The currency options.
        """
        return self._get_currency_options(lambda x: unmatched_url(x, None),
                                          self.currency)
    @property
    def account_options(self) -> list[OptionLink]:
        """Returns the account options.
        :return: The account options.
        """
        options: list[OptionLink] \
            = [OptionLink(gettext("Accounts"),
                          unmatched_url(self.currency, None),
                          True)]
        options.extend(
            [OptionLink(str(x), unmatched_url(self.currency, x), False)
             for x in self.accounts])
        return options
 def get_csv_rows(accounts: list[Account]) -> list[CSVRow]:
    """Composes and returns the CSV rows from the line items.
    :param accounts: The accounts.
    :return: The CSV rows.
    """
    rows: list[CSVRow] = [CSVRow(gettext("Account"), gettext("Count"))]
    rows.extend([CSVRow(str(x), x.count) for x in accounts])
    return rows
 class AccountsWithUnmatchedOffsets(BaseReport):
    """The accounts with unmatched offsets."""
    def __init__(self, currency: Currency):
        """Constructs the outstanding balances.
        :param currency: The currency.
        """
        self.__currency: Currency = currency
        """The currency."""
        self.__accounts: list[Account] \
            = get_accounts_with_unmatched(currency)
        """The accounts."""
    def csv(self) -> Response:
        """Returns the report as CSV for download.
        :return: The response of the report for download.
        """
        filename: str = "unmatched-accounts.csv"
        return csv_download(filename, get_csv_rows(self.__accounts))
    def html(self) -> str:
        """Composes and returns the report as HTML.
        :return: The report as HTML.
        """
        return render_template("accounting/report/unmatched-accounts.html",
                               report=PageParams(currency=self.__currency,
                                                 accounts=self.__accounts))
--- a/src/accounting/report/utils/base_page_params.py
+++ b/src/accounting/report/utils/base_page_params.py
@ -17,9 +17,8 @@
 """The page parameters of a report.
 """
 import typing as t
 from abc import ABC, abstractmethod
 from collections.abc import Callable
 from typing import Type
 from urllib.parse import urlparse, ParseResult, parse_qsl, urlencode, \
    urlunparse
@ -53,7 +52,7 @@ class BasePageParams(ABC):
        """
    @property
-    def journal_entry_types(self) -> Type[JournalEntryType]:
+    def journal_entry_types(self) -> t.Type[JournalEntryType]:
        """Returns the journal entry types.
        :return: The journal entry types.
@ -73,7 +72,7 @@ class BasePageParams(ABC):
        return urlunparse(parts)
    @staticmethod
-    def _get_currency_options(get_url: Callable[[Currency], str],
+    def _get_currency_options(get_url: t.Callable[[Currency], str],
                              active_currency: Currency) -> list[OptionLink]:
        """Returns the currency options.
--- a/src/accounting/report/utils/csv_export.py
+++ b/src/accounting/report/utils/csv_export.py
@ -18,11 +18,10 @@
 """
 import csv
 import datetime as dt
 from abc import ABC, abstractmethod
 from datetime import timedelta, date
 from decimal import Decimal
 from io import StringIO
 from urllib.parse import quote
 from flask import Response
@ -54,7 +53,7 @@ def csv_download(filename: str, rows: list[BaseCSVRow]) -> Response:
        fp.seek(0)
        response: Response = Response(fp.read(), mimetype="text/csv")
        response.headers["Content-Disposition"] \
-            = f"attachment; filename={quote(filename)}"
+            = f"attachment; filename={filename}"
        return response
@ -77,7 +76,7 @@ def period_spec(period: Period) -> str:
    return f"{start}-{end}"
-def __get_start_str(start: dt.date | None) -> str | None:
+def __get_start_str(start: date | None) -> str | None:
    """Returns the string representation of the start date.
    :param start: The start date.
@ -93,7 +92,7 @@ def __get_start_str(start: dt.date | None) -> str | None:
    return start.strftime("%Y%m%d")
-def __get_end_str(end: dt.date | None) -> str | None:
+def __get_end_str(end: date | None) -> str | None:
    """Returns the string representation of the end date.
    :param end: The end date.
@ -104,6 +103,6 @@ def __get_end_str(end: dt.date | None) -> str | None:
        return None
    if end.month == 12 and end.day == 31:
        return str(end.year)
-    if (end + dt.timedelta(days=1)).day == 1:
+    if (end + timedelta(days=1)).day == 1:
        return end.strftime("%Y%m")
    return end.strftime("%Y%m%d")
--- a/src/accounting/report/utils/offset_matcher.py
+++ b/src/accounting/report/utils/offset_matcher.py
@ -1,178 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/8
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The forms for the unmatched offset management.
 """
 from decimal import Decimal
 import sqlalchemy as sa
 from flask_babel import LazyString
 from sqlalchemy.orm import selectinload
 from accounting.locale import lazy_gettext
 from accounting.models import Currency, Account, JournalEntry, \
    JournalEntryLineItem
 from accounting.report.utils.unapplied import get_net_balances
 class OffsetPair:
    """A pair of an original line item and its offset."""
    def __init__(self, original_line_item: JournalEntryLineItem,
                 offset: JournalEntryLineItem):
        """Constructs a pair of an original line item and its offset.
        :param original_line_item: The original line item.
        :param offset: The offset.
        """
        self.original_line_item: JournalEntryLineItem = original_line_item
        """The original line item."""
        self.offset: JournalEntryLineItem = offset
        """The offset."""
 class OffsetMatcher:
    """The offset matcher."""
    def __init__(self, currency: Currency, account: Account):
        """Constructs the offset matcher.
        :param currency: The currency.
        :param account: The account.
        """
        self.__currency: Account = currency
        """The currency."""
        self.__account: Account = account
        """The account."""
        self.matched_pairs: list[OffsetPair] = []
        """A list of matched pairs."""
        self.line_items: list[JournalEntryLineItem] = []
        """The unapplied debits or credits and unmatched offsets."""
        self.unapplied: list[JournalEntryLineItem] = []
        """The unapplied debits or credits."""
        self.unmatched: list[JournalEntryLineItem] = []
        """The unmatched offsets."""
        self.__find_matches()
    def __find_matches(self) -> None:
        """Finds the matched original line items and their offsets.
        :return: None.
        """
        self.__get_line_items()
        if len(self.unapplied) == 0 or len(self.unmatched) == 0:
            return
        remains: list[JournalEntryLineItem] = self.unmatched.copy()
        for original_item in self.unapplied:
            offset_candidates: list[JournalEntryLineItem] \
                = [x for x in remains
                   if (x.journal_entry.date > original_item.journal_entry.date
                       or (x.journal_entry.date
                           == original_item.journal_entry.date
                           and x.journal_entry.no
                           > original_item.journal_entry.no))
                   and x.currency_code == original_item.currency_code
                   and x.description == original_item.description
                   and x.amount == original_item.net_balance]
            if len(offset_candidates) == 0:
                continue
            self.matched_pairs.append(
                OffsetPair(original_item, offset_candidates[0]))
            original_item.match = offset_candidates[0]
            offset_candidates[0].match = original_item
            remains.remove(offset_candidates[0])
    def __get_line_items(self) -> None:
        """Returns the unapplied original line items and unmatched offsets of
        the account.
        :return: The unapplied original line items and unmatched offsets of the
            account.
        """
        net_balances: dict[int, Decimal | None] \
            = get_net_balances(self.__currency, self.__account)
        unmatched_offset_condition: sa.BinaryExpression \
            = sa.and_(Account.id == self.__account.id,
                      JournalEntryLineItem.currency_code
                      == self.__currency.code,
                      JournalEntryLineItem.original_line_item_id.is_(None),
                      sa.or_(sa.and_(Account.base_code.startswith("2"),
                                     JournalEntryLineItem.is_debit),
                             sa.and_(Account.base_code.startswith("1"),
                                     sa.not_(JournalEntryLineItem.is_debit))))
        self.line_items = JournalEntryLineItem.query \
            .join(Account).join(JournalEntry) \
            .filter(sa.or_(JournalEntryLineItem.id.in_(net_balances),
                           unmatched_offset_condition)) \
            .order_by(JournalEntry.date, JournalEntry.no,
                      JournalEntryLineItem.is_debit, JournalEntryLineItem.no) \
            .options(selectinload(JournalEntryLineItem.currency),
                     selectinload(JournalEntryLineItem.journal_entry)).all()
        for line_item in self.line_items:
            line_item.is_offset = line_item.id not in net_balances
        self.unapplied = [x for x in self.line_items if not x.is_offset]
        for line_item in self.unapplied:
            line_item.net_balance = line_item.amount \
                if net_balances[line_item.id] is None \
                else net_balances[line_item.id]
        self.unmatched = [x for x in self.line_items if x.is_offset]
        self.__populate_accumulated_balances()
    def __populate_accumulated_balances(self) -> None:
        """Populates the accumulated balances of the line items.
        :return: None.
        """
        balance: Decimal = Decimal("0")
        for line_item in self.line_items:
            amount: Decimal = line_item.amount if line_item.is_offset \
                else line_item.net_balance
            if line_item.is_debit:
                line_item.debit = amount
                line_item.credit = None
                balance = balance + amount
            else:
                line_item.debit = None
                line_item.credit = amount
                balance = balance - amount
            line_item.balance = balance
    @property
    def status(self) -> str | LazyString:
        """Returns the match status message.
        :return: The match status message.
        """
        if len(self.unmatched) == 0:
            return lazy_gettext("There is no unmatched offset.")
        if len(self.matched_pairs) == 0:
            return lazy_gettext(
                    "%(total)s unmatched offsets without original items.",
                    total=len(self.unmatched))
        return lazy_gettext(
            "%(matches)s unmatched offsets out of %(total)s"
            " can match with their original items.",
            matches=len(self.matched_pairs),
            total=len(self.unmatched))
    def match(self) -> None:
        """Matches the original line items with offsets.
        :return: None.
        """
        for pair in self.matched_pairs:
            pair.offset.original_line_item_id = pair.original_line_item.id
--- a/src/accounting/report/utils/report_chooser.py
+++ b/src/accounting/report/utils/report_chooser.py
@ -21,7 +21,7 @@ This file is largely taken from the NanoParma ERP project, first written in
 """
 import re
-from collections.abc import Iterator
+import typing as t
 from flask_babel import LazyString
@ -31,12 +31,10 @@ from accounting.models import Currency, Account
 from accounting.report.period import Period, get_period
 from accounting.template_globals import default_currency_code
 from accounting.utils.current_account import CurrentAccount
 from accounting.utils.permission import can_edit
 from .option_link import OptionLink
 from .report_type import ReportType
 from .urls import journal_url, ledger_url, income_expenses_url, \
-    trial_balance_url, income_statement_url, balance_sheet_url, \
+    trial_balance_url, income_statement_url, balance_sheet_url
    unapplied_url, unmatched_url
 class ReportChooser:
@ -76,9 +74,6 @@ class ReportChooser:
        self.__reports.append(self.__trial_balance)
        self.__reports.append(self.__income_statement)
        self.__reports.append(self.__balance_sheet)
        self.__reports.append(self.__unapplied)
        if can_edit():
            self.__reports.append(self.__unmatched)
        for report in self.__reports:
            if report.is_active:
                self.current_report = report.title
@ -156,41 +151,7 @@ class ReportChooser:
                          self.__active_report == ReportType.BALANCE_SHEET,
                          fa_icon="fa-solid fa-scale-balanced")
-    @property
+    def __iter__(self) -> t.Iterator[OptionLink]:
    def __unapplied(self) -> OptionLink:
        """Returns the unapplied original line items.
        :return: The unapplied original line items.
        """
        account: Account = self.__account
        if not account.is_need_offset:
            return OptionLink(gettext("Unapplied Items"),
                              unapplied_url(self.__currency, None),
                              self.__active_report == ReportType.UNAPPLIED,
                              fa_icon="fa-solid fa-link-slash")
        return OptionLink(gettext("Unapplied Items"),
                          unapplied_url(self.__currency, self.__account),
                          self.__active_report == ReportType.UNAPPLIED,
                          fa_icon="fa-solid fa-link-slash")
    @property
    def __unmatched(self) -> OptionLink:
        """Returns the unmatched offsets.
        :return: The unmatched offsets.
        """
        account: Account = self.__account
        if not account.is_need_offset:
            return OptionLink(gettext("Unmatched Offsets"),
                              unmatched_url(self.__currency, None),
                              self.__active_report == ReportType.UNMATCHED,
                              fa_icon="fa-solid fa-file-circle-question")
        return OptionLink(gettext("Unmatched Offsets"),
                          unmatched_url(self.__currency, self.__account),
                          self.__active_report == ReportType.UNMATCHED,
                          fa_icon="fa-solid fa-file-circle-question")
    def __iter__(self) -> Iterator[OptionLink]:
        """Returns the iteration of the reports.
        :return: The iteration of the reports.
--- a/src/accounting/report/utils/report_type.py
+++ b/src/accounting/report/utils/report_type.py
@ -34,9 +34,5 @@ class ReportType(Enum):
    """The income statement."""
    BALANCE_SHEET: str = "balance-sheet"
    """The balance sheet."""
    UNAPPLIED: str = "unapplied"
    """The unapplied original line items."""
    UNMATCHED: str = "unmatched"
    """The unmatched offsets."""
    SEARCH: str = "search"
    """The search."""
--- a/src/accounting/report/utils/unapplied.py
+++ b/src/accounting/report/utils/unapplied.py
@ -1,104 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/7
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The unapplied original line item utilities.
 """
 from decimal import Decimal
 import sqlalchemy as sa
 from accounting import db
 from accounting.models import Currency, Account, JournalEntry, \
    JournalEntryLineItem
 from accounting.utils.offset_alias import offset_alias
 def get_accounts_with_unapplied(currency: Currency) -> list[Account]:
    """Returns the accounts with unapplied original line items.
    :param currency: The currency.
    :return: The accounts with unapplied original line items.
    """
    offset: sa.Alias = offset_alias()
    net_balance: sa.Label \
        = (JournalEntryLineItem.amount
           + sa.func.sum(sa.case(
                (offset.c.is_debit == JournalEntryLineItem.is_debit,
                 offset.c.amount),
                else_=-offset.c.amount))).label("net_balance")
    select_unapplied: sa.Select \
        = sa.select(JournalEntryLineItem.id)\
        .join(JournalEntry).join(Account)\
        .join(offset,
              JournalEntryLineItem.id == offset.c.original_line_item_id,
              isouter=True)\
        .filter(Account.is_need_offset,
                JournalEntryLineItem.currency_code == currency.code,
                sa.or_(sa.and_(Account.base_code.startswith("2"),
                               sa.not_(JournalEntryLineItem.is_debit)),
                       sa.and_(Account.base_code.startswith("1"),
                               JournalEntryLineItem.is_debit)))\
        .group_by(JournalEntryLineItem.id)\
        .having(sa.or_(sa.func.count(offset.c.id) == 0, net_balance != 0))
    count_func: sa.Label \
        = sa.func.count(JournalEntryLineItem.id).label("count")
    select: sa.Select = sa.select(Account.id, count_func)\
        .join(JournalEntryLineItem, isouter=True)\
        .filter(JournalEntryLineItem.id.in_(select_unapplied))\
        .group_by(Account.id)\
        .having(count_func > 0)
    counts: dict[int, int] \
        = {x.id: x.count for x in db.session.execute(select)}
    accounts: list[Account] = Account.query.filter(Account.id.in_(counts))\
        .order_by(Account.base_code, Account.no).all()
    for account in accounts:
        account.count = counts[account.id]
    return accounts
 def get_net_balances(currency: Currency, account: Account) \
        -> dict[int, Decimal | None]:
    """Returns the net balances of the unapplied line items of the account.
    :param currency: The currency.
    :param account: The account.
    :return: The net balances of the unapplied line items of the account.
    """
    offset: sa.Alias = offset_alias()
    net_balance: sa.Label \
        = (JournalEntryLineItem.amount
           + sa.func.sum(sa.case(
                (offset.c.is_debit == JournalEntryLineItem.is_debit,
                 offset.c.amount),
                else_=-offset.c.amount))).label("net_balance")
    select_net_balances: sa.Select \
        = sa.select(JournalEntryLineItem.id, net_balance) \
        .join(JournalEntry).join(Account) \
        .join(offset,
              JournalEntryLineItem.id == offset.c.original_line_item_id,
              isouter=True) \
        .filter(Account.id == account.id,
                JournalEntryLineItem.currency_code == currency.code,
                sa.or_(sa.and_(Account.base_code.startswith("2"),
                               sa.not_(JournalEntryLineItem.is_debit)),
                       sa.and_(Account.base_code.startswith("1"),
                               JournalEntryLineItem.is_debit))) \
        .group_by(JournalEntryLineItem.id) \
        .having(sa.or_(sa.func.count(offset.c.id) == 0, net_balance != 0))
    return {x.id: x.net_balance
            for x in db.session.execute(select_net_balances).all()}
--- a/src/accounting/report/utils/unmatched.py
+++ b/src/accounting/report/utils/unmatched.py
@ -1,54 +0,0 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/8
 #  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 #  Unless required by applicable law or agreed to in writing, software
 #  distributed under the License is distributed on an "AS IS" BASIS,
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 """The unmatched offset utilities.
 """
 import sqlalchemy as sa
 from accounting import db
 from accounting.models import Currency, Account, JournalEntry, \
    JournalEntryLineItem
 def get_accounts_with_unmatched(currency: Currency) -> list[Account]:
    """Returns the accounts with unmatched offsets.
    :param currency: The currency.
    :return: The accounts with unmatched offsets, with the "count" property set
        to the number of unmatched offsets.
    """
    count_func: sa.Label \
        = sa.func.count(JournalEntryLineItem.id).label("count")
    select: sa.Select = sa.select(Account.id, count_func)\
        .select_from(Account)\
        .join(JournalEntryLineItem, isouter=True).join(JournalEntry)\
        .filter(Account.is_need_offset,
                JournalEntryLineItem.currency_code == currency.code,
                JournalEntryLineItem.original_line_item_id.is_(None),
                sa.or_(sa.and_(Account.base_code.startswith("2"),
                               JournalEntryLineItem.is_debit),
                       sa.and_(Account.base_code.startswith("1"),
                               sa.not_(JournalEntryLineItem.is_debit))))\
        .group_by(Account.id)\
        .having(count_func > 0)
    counts: dict[int, int] \
        = {x.id: x.count for x in db.session.execute(select)}
    accounts: list[Account] = Account.query.filter(Account.id.in_(counts))\
        .order_by(Account.base_code, Account.no).all()
    for account in accounts:
        account.count = counts[account.id]
    return accounts
--- a/src/accounting/report/utils/urls.py
+++ b/src/accounting/report/utils/urls.py
@ -47,10 +47,9 @@ def ledger_url(currency: Currency, account: Account, period: Period) \
    :param period: The period.
    :return: The URL of the ledger.
    """
-    if currency.code == default_currency_code() \
+    if period.is_default:
-            and account.code == Account.CASH_CODE \
+        return url_for("accounting-report.ledger-default",
-            and period.is_default:
+                       currency=currency, account=account)
        return url_for("accounting-report.ledger-default")
    return url_for("accounting-report.ledger",
                   currency=currency, account=account,
                   period=period)
@ -69,6 +68,9 @@ def income_expenses_url(currency: Currency, account: CurrentAccount,
            and account.code == options.default_ie_account_code \
            and period.is_default:
        return url_for("accounting-report.default")
    if period.is_default:
        return url_for("accounting-report.income-expenses-default",
                       currency=currency, account=account)
    return url_for("accounting-report.income-expenses",
                   currency=currency, account=account,
                   period=period)
@ -81,8 +83,9 @@ def trial_balance_url(currency: Currency, period: Period) -> str:
    :param period: The period.
    :return: The URL of the trial balance.
    """
-    if currency.code == default_currency_code() and period.is_default:
+    if period.is_default:
-        return url_for("accounting-report.trial-balance-default")
+        return url_for("accounting-report.trial-balance-default",
                       currency=currency)
    return url_for("accounting-report.trial-balance",
                   currency=currency, period=period)
@ -94,8 +97,9 @@ def income_statement_url(currency: Currency, period: Period) -> str:
    :param period: The period.
    :return: The URL of the income statement.
    """
-    if currency.code == default_currency_code() and period.is_default:
+    if period.is_default:
-        return url_for("accounting-report.income-statement-default")
+        return url_for("accounting-report.income-statement-default",
                       currency=currency)
    return url_for("accounting-report.income-statement",
                   currency=currency, period=period)
@ -107,41 +111,8 @@ def balance_sheet_url(currency: Currency, period: Period) -> str:
    :param period: The period.
    :return: The URL of the balance sheet.
    """
-    if currency.code == default_currency_code() and period.is_default:
+    if period.is_default:
-        return url_for("accounting-report.balance-sheet-default")
+        return url_for("accounting-report.balance-sheet-default",
                       currency=currency)
    return url_for("accounting-report.balance-sheet",
                   currency=currency, period=period)
 def unapplied_url(currency: Currency, account: Account | None) -> str:
    """Returns the URL of the unapplied original line items.
    :param currency: The currency.
    :param account: The account, or None to list the accounts with unapplied
        original line items.
    :return: The URL of the unapplied original line items.
    """
    if account is None:
        if currency.code == default_currency_code():
            return url_for("accounting-report.unapplied-accounts-default")
        return url_for("accounting-report.unapplied-accounts",
                       currency=currency)
    return url_for("accounting-report.unapplied",
                   currency=currency, account=account)
 def unmatched_url(currency: Currency, account: Account | None) -> str:
    """Returns the URL of the unmatched offset line items.
    :param currency: The currency.
    :param account: The account, or None to list the accounts with unmatched
        offset line items.
    :return: The URL of the unmatched offset line items.
    """
    if account is None:
        if currency.code == default_currency_code():
            return url_for("accounting-report.unmatched-accounts-default")
        return url_for("accounting-report.unmatched-accounts",
                       currency=currency)
    return url_for("accounting-report.unmatched",
                   currency=currency, account=account)
--- a/src/accounting/report/views.py
+++ b/src/accounting/report/views.py
@ -17,27 +17,18 @@
 """The views for the report management.
 """
-from flask import Blueprint, request, Response, redirect, flash
+from flask import Blueprint, request, Response
 from accounting import db
 from accounting.locale import lazy_gettext
 from accounting.models import Currency, Account
 from accounting.report.period import Period, get_period
 from accounting.template_globals import default_currency_code
 from accounting.utils.cast import s
 from accounting.utils.current_account import CurrentAccount
 from accounting.utils.next_uri import or_next
 from accounting.utils.options import options
-from accounting.utils.permission import has_permission, can_view, can_edit
+from accounting.utils.permission import has_permission, can_view
 from .period import Period, get_period
 from .reports import Journal, Ledger, IncomeExpenses, TrialBalance, \
    IncomeStatement, BalanceSheet, Search
 from .reports.unapplied import UnappliedOriginalLineItems
 from .reports.unapplied_accounts import AccountsWithUnappliedOriginalLineItems
 from .reports.unmatched import UnmatchedOffsets
 from .reports.unmatched_accounts import AccountsWithUnmatchedOffsets
 from .template_filters import format_amount
 from .utils.offset_matcher import OffsetMatcher
 from .utils.urls import unmatched_url
 bp: Blueprint = Blueprint("accounting-report", __name__)
 """The view blueprint for the reports."""
@ -51,7 +42,10 @@ def get_default_report() -> str | Response:
    :return: The income and expenses log in the default period.
    """
-    return get_default_income_expenses()
+    return __get_income_expenses(
        db.session.get(Currency, default_currency_code()),
        options.default_ie_account,
        get_period())
@bp.get("journal", endpoint="journal-default")
@ -87,15 +81,17 @@ def __get_journal(period: Period) -> str | Response:
    return report.html()
-@bp.get("ledger", endpoint="ledger-default")
+@bp.get("ledger/<currency:currency>/<account:account>",
        endpoint="ledger-default")
@has_permission(can_view)
-def get_default_ledger() -> str | Response:
+def get_default_ledger(currency: Currency, account: Account) -> str | Response:
-    """Returns the ledger in the default currency, cash, and default period.
+    """Returns the ledger in the default period.
-    :return: The ledger in the default currency, cash, and default period.
+    :param currency: The currency.
    :param account: The account.
    :return: The ledger in the default period.
    """
-    return __get_ledger(db.session.get(Currency, default_currency_code()),
+    return __get_ledger(currency, account, get_period())
                        Account.cash(), get_period())
@bp.get("ledger/<currency:currency>/<account:account>/<period:period>",
@ -128,21 +124,23 @@ def __get_ledger(currency: Currency, account: Account, period: Period) \
    return report.html()
-@bp.get("income-expenses", endpoint="income-expenses-default")
+@bp.get("income-expenses/<currency:currency>/<ieAccount:account>",
        endpoint="income-expenses-default")
@has_permission(can_view)
-def get_default_income_expenses() -> str | Response:
+def get_default_income_expenses(currency: Currency, account: CurrentAccount) \
        -> str | Response:
    """Returns the income and expenses log in the default period.
    :param currency: The currency.
    :param account: The account.
    :return: The income and expenses log in the default period.
    """
-    return __get_income_expenses(
+    return __get_income_expenses(currency, account, get_period())
        db.session.get(Currency, default_currency_code()),
        options.default_ie_account,
        get_period())
-@bp.get("income-expenses/<currency:currency>/<currentAccount:account>/"
+@bp.get(
-        "<period:period>", endpoint="income-expenses")
+    "income-expenses/<currency:currency>/<ieAccount:account>/<period:period>",
    endpoint="income-expenses")
@has_permission(can_view)
 def get_income_expenses(currency: Currency, account: CurrentAccount,
                        period: Period) -> str | Response:
@ -171,15 +169,16 @@ def __get_income_expenses(currency: Currency, account: CurrentAccount,
    return report.html()
-@bp.get("trial-balance", endpoint="trial-balance-default")
+@bp.get("trial-balance/<currency:currency>",
        endpoint="trial-balance-default")
@has_permission(can_view)
-def get_default_trial_balance() -> str | Response:
+def get_default_trial_balance(currency: Currency) -> str | Response:
    """Returns the trial balance in the default period.
    :param currency: The currency.
    :return: The trial balance in the default period.
    """
-    return __get_trial_balance(
+    return __get_trial_balance(currency, get_period())
        db.session.get(Currency, default_currency_code()), get_period())
@bp.get("trial-balance/<currency:currency>/<period:period>",
@ -208,15 +207,16 @@ def __get_trial_balance(currency: Currency, period: Period) -> str | Response:
    return report.html()
-@bp.get("income-statement", endpoint="income-statement-default")
+@bp.get("income-statement/<currency:currency>",
        endpoint="income-statement-default")
@has_permission(can_view)
-def get_default_income_statement() -> str | Response:
+def get_default_income_statement(currency: Currency) -> str | Response:
    """Returns the income statement in the default period.
    :param currency: The currency.
    :return: The income statement in the default period.
    """
-    return __get_income_statement(
+    return __get_income_statement(currency, get_period())
        db.session.get(Currency, default_currency_code()), get_period())
@bp.get("income-statement/<currency:currency>/<period:period>",
@ -246,15 +246,16 @@ def __get_income_statement(currency: Currency, period: Period) \
    return report.html()
-@bp.get("balance-sheet", endpoint="balance-sheet-default")
+@bp.get("balance-sheet/<currency:currency>",
        endpoint="balance-sheet-default")
@has_permission(can_view)
-def get_default_balance_sheet() -> str | Response:
+def get_default_balance_sheet(currency: Currency) -> str | Response:
    """Returns the balance sheet in the default period.
    :param currency: The currency.
    :return: The balance sheet in the default period.
    """
-    return __get_balance_sheet(
+    return __get_balance_sheet(currency, get_period())
        db.session.get(Currency, default_currency_code()), get_period())
@bp.get("balance-sheet/<currency:currency>/<period:period>",
@ -285,130 +286,6 @@ def __get_balance_sheet(currency: Currency, period: Period) \
    return report.html()
@bp.get("unapplied", endpoint="unapplied-accounts-default")
@has_permission(can_view)
 def get_default_unapplied_accounts() -> str | Response:
    """Returns the accounts with unapplied original line items.
    :return: The accounts with unapplied original line items.
    """
    return __get_unapplied_accounts(
        db.session.get(Currency, default_currency_code()))
@bp.get("unapplied/<currency:currency>", endpoint="unapplied-accounts")
@has_permission(can_view)
 def get_unapplied_accounts(currency: Currency) -> str | Response:
    """Returns the accounts with unapplied original line items.
    :param currency: The currency.
    :return: The accounts with unapplied original line items.
    """
    return __get_unapplied_accounts(currency)
 def __get_unapplied_accounts(currency: Currency) -> str | Response:
    """Returns the accounts with unapplied original line items.
    :param currency: The currency.
    :return: The accounts with unapplied original line items.
    """
    report: AccountsWithUnappliedOriginalLineItems \
        = AccountsWithUnappliedOriginalLineItems(currency)
    if "as" in request.args and request.args["as"] == "csv":
        return report.csv()
    return report.html()
@bp.get("unapplied/<currency:currency>/<needOffsetAccount:account>",
        endpoint="unapplied")
@has_permission(can_view)
 def get_unapplied(currency: Currency, account: Account) -> str | Response:
    """Returns the unapplied original line items.
    :param currency: The currency.
    :param account: The Account.
    :return: The unapplied original line items in the period.
    """
    report: UnappliedOriginalLineItems \
        = UnappliedOriginalLineItems(currency, account)
    if "as" in request.args and request.args["as"] == "csv":
        return report.csv()
    return report.html()
@bp.get("unmatched", endpoint="unmatched-accounts-default")
@has_permission(can_edit)
 def get_default_unmatched_accounts() -> str | Response:
    """Returns the accounts with unmatched offsets.
    :return: The accounts with unmatched offsets.
    """
    return __get_unmatched_accounts(
        db.session.get(Currency, default_currency_code()))
@bp.get("unmatched/<currency:currency>", endpoint="unmatched-accounts")
@has_permission(can_edit)
 def get_unmatched_accounts(currency: Currency) -> str | Response:
    """Returns the accounts with unmatched offsets.
    :param currency: The currency.
    :return: The accounts with unmatched offsets.
    """
    return __get_unmatched_accounts(currency)
 def __get_unmatched_accounts(currency: Currency) -> str | Response:
    """Returns the accounts with unmatched offsets.
    :param currency: The currency.
    :return: The accounts with unmatched offsets.
    """
    report: AccountsWithUnmatchedOffsets \
        = AccountsWithUnmatchedOffsets(currency)
    if "as" in request.args and request.args["as"] == "csv":
        return report.csv()
    return report.html()
@bp.get("unmatched/<currency:currency>/<needOffsetAccount:account>",
        endpoint="unmatched")
@has_permission(can_edit)
 def get_unmatched(currency: Currency, account: Account) -> str | Response:
    """Returns the unmatched offsets.
    :param currency: The currency.
    :param account: The Account.
    :return: The unmatched offsets in the period.
    """
    report: UnmatchedOffsets = UnmatchedOffsets(currency, account)
    if "as" in request.args and request.args["as"] == "csv":
        return report.csv()
    return report.html()
@bp.post("match-offsets/<currency:currency>/<needOffsetAccount:account>",
         endpoint="match-offsets")
@has_permission(can_edit)
 def match_offsets(currency: Currency, account: Account) -> redirect:
    """Matches the original line items with their offsets.
    :return: Redirection to the view of the unmatched offsets.
    """
    matcher: OffsetMatcher = OffsetMatcher(currency, account)
    if len(matcher.matched_pairs) == 0:
        flash(s(lazy_gettext("No more offset to match automatically.")),
              "success")
        return redirect(or_next(
            unmatched_url(currency, account)))
    matcher.match()
    db.session.commit()
    flash(s(lazy_gettext("Matched %(matches)s offsets.",
                         matches=len(matcher.matched_pairs))), "success")
    return redirect(or_next(unmatched_url(currency, account)))
@bp.get("search", endpoint="search")
@has_permission(can_view)
 def search() -> str | Response:
--- a/src/accounting/static/css/style.css
+++ b/src/accounting/static/css/style.css
@ -39,10 +39,6 @@
 .accounting-toolbar {
    display: flex;
 }
 .accounting-toolbar-accounts {
    max-height: 20rem;
    overflow-y: scroll;
 }
 .accounting-toolbar .input-group > .input-group-text {
    padding: 0;
    background-color: transparent;
@ -213,23 +209,11 @@ a.accounting-report-table-row {
 .accounting-report-table-body .accounting-amount {
    font-style: italic;
 }
 .accounting-report-table-body .accounting-report-table-row {
    background-color: #f8f9fa;
 }
 .accounting-report-table-body .accounting-report-table-row:nth-child(2n+1) {
-    background-color: #ecedee;
+    background-color: #f2f2f2;
 }
 .accounting-report-table-body .accounting-report-table-row:hover {
-    background-color: #e5e6e7;
+    background-color: rgba(0, 0, 0, 0.075);
 }
 .accounting-report-table-body .accounting-report-table-row-danger {
    background-color: #f8d7da;
 }
 .accounting-report-table-body .accounting-report-table-row-danger:nth-child(2n+1) {
    background-color: #eccccf;
 }
 .accounting-report-table-body .accounting-report-table-row-danger:hover {
    background-color: #e5c7ca;
 }
 .accounting-journal-table .accounting-report-table-row {
    grid-template-columns: 1fr 1fr 2fr 4fr 1fr 1fr;
@ -325,26 +309,6 @@ a.accounting-report-table-row {
 .accounting-balance-sheet-total .accounting-amount, .accounting-balance-sheet-subtotal, .accounting-amount {
    font-style: italic;
 }
 .accounting-unapplied-table .accounting-report-table-row {
    grid-template-columns: 1fr 5fr 1fr 1fr;
 }
 .accounting-unapplied-account-table .accounting-report-table-row {
    display: flex;
    justify-content: space-between;
 }
 .accounting-unapplied-account-table .accounting-report-table-header .accounting-report-table-row {
    display: block;
 }
 .accounting-unmatched-table .accounting-report-table-row {
    grid-template-columns: 1fr 5fr 1fr 1fr 1fr;
 }
 .accounting-unmatched-account-table .accounting-report-table-row {
    display: flex;
    justify-content: space-between;
 }
 .accounting-unmatched-account-table .accounting-report-table-header .accounting-report-table-row {
    display: block;
 }
 /* The accounting report */
 .accounting-mobile-journal-credit {
@ -379,12 +343,6 @@ a.accounting-report-table-row {
    margin: 0;
 }
 /* The unmatched offsets */
 .accounting-unmatched-offset-pair-list {
    height: 20rem;
    overflow-y: scroll;
 }
 /* The Material Design text field (floating form control in Bootstrap) */
 .accounting-material-text-field {
    position: relative;
--- a/src/accounting/static/js/description-editor.js
+++ b/src/accounting/static/js/description-editor.js
@ -364,13 +364,12 @@ class DescriptionEditorAccount extends JournalEntryAccount {
     *
     * @param editor {DescriptionEditor} the description editor
     * @param code {string} the account code
     * @param title {string} the account title
     * @param text {string} the account text
     * @param isNeedOffset {boolean} true if the line items in the account needs offset, or false otherwise
     * @param button {HTMLButtonElement} the account button
     */
-    constructor(editor, code, title, text, isNeedOffset, button) {
+    constructor(editor, code, text, isNeedOffset, button) {
-        super(code, title, text, isNeedOffset);
+        super(code, text, isNeedOffset);
        this.#element = button;
        this.#element.onclick = () => editor.selectAccount(this);
    }
@ -425,7 +424,7 @@ class DescriptionEditorSuggestedAccount extends DescriptionEditorAccount {
     * @param button {HTMLButtonElement} the account button
     */
    constructor(editor, button) {
-        super(editor, button.dataset.code, button.dataset.title, button.dataset.text, button.classList.contains("accounting-account-is-need-offset"), button);
+        super(editor, button.dataset.code, button.dataset.text, button.classList.contains("accounting-account-is-need-offset"), button);
    }
 }
@ -442,7 +441,7 @@ class DescriptionEditorConfirmedAccount extends DescriptionEditorAccount {
     * @param button {HTMLButtonElement} the account button
     */
    constructor(editor, button) {
-        super(editor, "", "", "", false, button);
+        super(editor, "", "", false, button);
        this.isConfirmedAccount = true;
    }
--- a/src/accounting/static/js/journal-entry-account-selector.js
+++ b/src/accounting/static/js/journal-entry-account-selector.js
@ -123,7 +123,7 @@ class JournalEntryAccountSelector {
                option.setShown(false);
            }
        }
-        if (!isAnyMatched && this.#isShowMore) {
+        if (!isAnyMatched) {
            this.#optionList.classList.add("d-none");
            this.#queryNoResult.classList.remove("d-none");
        } else {
@ -202,12 +202,6 @@ class JournalEntryAccountOption {
     */
    code;
    /**
     * The account title
     * @type {string}
     */
    title;
    /**
     * The account text
     * @type {string}
@ -241,7 +235,6 @@ class JournalEntryAccountOption {
    constructor(selector, element) {
        this.#element = element;
        this.code = element.dataset.code;
        this.title = element.dataset.title;
        this.text = element.dataset.text;
        this.#isInUse = element.classList.contains("accounting-account-is-in-use");
        this.isNeedOffset = element.classList.contains("accounting-account-is-need-offset");
--- a/src/accounting/static/js/journal-entry-form.js
+++ b/src/accounting/static/js/journal-entry-form.js
@ -791,12 +791,6 @@ class JournalEntryAccount {
     */
    code;
    /**
     * The account title
     * @type {string}
     */
    title;
    /**
     * The account text
     * @type {string}
@ -813,13 +807,11 @@ class JournalEntryAccount {
     * Constructs a journal entry account.
     *
     * @param code {string} the account code
     * @param title {string} the account title
     * @param text {string} the account text
     * @param isNeedOffset {boolean} true if the line items in the account needs offset, or false otherwise
     */
-    constructor(code, title, text, isNeedOffset) {
+    constructor(code, text, isNeedOffset) {
        this.code = code;
        this.title = title;
        this.text = text;
        this.isNeedOffset = isNeedOffset;
    }
@ -830,7 +822,7 @@ class JournalEntryAccount {
     * @return {JournalEntryAccount} the copy of the account
     */
    copy() {
-        return new JournalEntryAccount(this.code, this.title, this.text, this.isNeedOffset);
+        return new JournalEntryAccount(this.code, this.text, this.isNeedOffset);
    }
 }
@ -895,16 +887,10 @@ class LineItemSubForm {
    #accountCode;
    /**
-     * The code part of the text display of the account
+     * The text display of the account
-     * @type {HTMLSpanElement}
+     * @type {HTMLDivElement}
     */
-    #accountTextCode;
+    #accountText;
    /**
     * The title part of the text display of the account
     * @type {HTMLSpanElement}
     */
    #accountTextTitle;
    /**
     * The description
@ -971,8 +957,7 @@ class LineItemSubForm {
        this.#error = document.getElementById(`${prefix}-error`);
        this.#no = document.getElementById(`${prefix}-no`);
        this.#accountCode = document.getElementById(`${prefix}-account-code`);
-        this.#accountTextCode = document.getElementById(`${prefix}-account-text-code`);
+        this.#accountText = document.getElementById(`${prefix}-account-text`);
        this.#accountTextTitle = document.getElementById(`${prefix}-account-text-title`);
        this.#description = document.getElementById(`${prefix}-description`);
        this.#descriptionText = document.getElementById(`${prefix}-description-text`);
        this.#originalLineItemId = document.getElementById(`${prefix}-original-line-item-id`);
@ -1039,7 +1024,7 @@ class LineItemSubForm {
     * @return {JournalEntryAccount|null} the account
     */
    get account() {
-        return this.#accountCode.value === null? null: new JournalEntryAccount(this.#accountCode.value, this.#accountCode.dataset.title, this.#accountCode.dataset.text, this.#accountCode.classList.contains("accounting-account-is-need-offset"));
+        return this.#accountCode.value === null? null: new JournalEntryAccount(this.#accountCode.value, this.#accountCode.dataset.text, this.#accountCode.classList.contains("accounting-account-is-need-offset"));
    }
    /**
@ -1107,15 +1092,13 @@ class LineItemSubForm {
            this.#originalLineItemText.innerText = A_("Offset %(item)s", {item: editor.originalLineItemText});
        }
        this.#accountCode.value = editor.account.code;
        this.#accountCode.dataset.title = editor.account.title;
        this.#accountCode.dataset.text = editor.account.text;
        if (editor.account.isNeedOffset) {
            this.#accountCode.classList.add("accounting-account-is-need-offset");
        } else {
            this.#accountCode.classList.remove("accounting-account-is-need-offset");
        }
-        this.#accountTextCode.innerText = editor.account.code
+        this.#accountText.innerText = editor.account.text;
        this.#accountTextTitle.innerText = editor.account.title
        this.#description.value = editor.description === null? "": editor.description;
        this.#descriptionText.innerText = editor.description === null? "": editor.description;
        this.#amount.value = editor.amount;
--- a/src/accounting/static/js/journal-entry-line-item-editor.js
+++ b/src/accounting/static/js/journal-entry-line-item-editor.js
@ -276,23 +276,19 @@ class JournalEntryLineItemEditor {
        this.originalLineItemDate = originalLineItem.date;
        this.originalLineItemText = originalLineItem.text;
        this.#originalLineItemText.innerText = originalLineItem.text;
-        if (this.description === null) {
+        this.#setEnableDescriptionAccount(false);
-            if (originalLineItem.description === "") {
+        if (originalLineItem.description === "") {
-                this.#descriptionControl.classList.remove("accounting-not-empty");
+            this.#descriptionControl.classList.remove("accounting-not-empty");
-            } else {
+        } else {
-                this.#descriptionControl.classList.add("accounting-not-empty");
+            this.#descriptionControl.classList.add("accounting-not-empty");
            }
            this.description = originalLineItem.description === ""? null: originalLineItem.description;
            this.#descriptionText.innerText = originalLineItem.description;
        }
-        this.#setEnableAccount(false);
+        this.description = originalLineItem.description === ""? null: originalLineItem.description;
        this.#descriptionText.innerText = originalLineItem.description;
        this.#accountControl.classList.add("accounting-not-empty");
        this.account = originalLineItem.account.copy();
        this.isAccountConfirmed = false;
        this.#accountText.innerText = this.account.text;
-        if (this.#amountInput.value === "" || new Decimal(this.#amountInput.value).greaterThan(originalLineItem.netBalance)) {
+        this.#amountInput.value = String(originalLineItem.netBalance);
            this.#amountInput.value = String(originalLineItem.netBalance);
        }
        this.#amountInput.max = String(originalLineItem.netBalance);
        this.#amountInput.min = "0";
        this.#validate();
@ -309,7 +305,7 @@ class JournalEntryLineItemEditor {
        this.originalLineItemDate = null;
        this.originalLineItemText = null;
        this.#originalLineItemText.innerText = "";
-        this.#setEnableAccount(true);
+        this.#setEnableDescriptionAccount(true);
        this.#accountControl.classList.remove("accounting-not-empty");
        this.account = null;
        this.isAccountConfirmed = false;
@ -360,7 +356,7 @@ class JournalEntryLineItemEditor {
     */
    saveAccount(account) {
        this.#accountControl.classList.add("accounting-not-empty");
-        this.account = new JournalEntryAccount(account.code, account.title, account.text, account.isNeedOffset);
+        this.account = new JournalEntryAccount(account.code, account.text, account.isNeedOffset);
        this.isAccountConfirmed = true;
        this.#accountText.innerText = account.text;
        this.#validateAccount();
@ -476,13 +472,12 @@ class JournalEntryLineItemEditor {
        this.originalLineItemDate = null;
        this.originalLineItemText = null;
        this.#originalLineItemText.innerText = "";
-        this.#descriptionControl.dataset.bsTarget = `#accounting-description-editor-${this.#debitCreditSubForm.debitCredit}-modal`;
+        this.#setEnableDescriptionAccount(true);
        this.#descriptionControl.classList.remove("accounting-not-empty");
        this.#descriptionControl.classList.remove("is-invalid");
        this.description = null;
        this.#descriptionText.innerText = ""
        this.#descriptionError.innerText = ""
        this.#setEnableAccount(true);
        this.#accountControl.classList.remove("accounting-not-empty");
        this.#accountControl.classList.remove("is-invalid");
        this.account = null;
@ -516,7 +511,7 @@ class JournalEntryLineItemEditor {
            this.#originalLineItemContainer.classList.remove("d-none");
            this.#originalLineItemControl.classList.add("accounting-not-empty");
        }
-        this.#descriptionControl.dataset.bsTarget = `#accounting-description-editor-${this.#debitCreditSubForm.debitCredit}-modal`;
+        this.#setEnableDescriptionAccount(!lineItem.isMatched && this.originalLineItemId === null);
        this.description = lineItem.description;
        if (this.description === null) {
            this.#descriptionControl.classList.remove("accounting-not-empty");
@ -524,7 +519,6 @@ class JournalEntryLineItemEditor {
            this.#descriptionControl.classList.add("accounting-not-empty");
        }
        this.#descriptionText.innerText = this.description === null? "": this.description;
        this.#setEnableAccount(!lineItem.isMatched && this.originalLineItemId === null);
        this.account = lineItem.account;
        this.isAccountConfirmed = true;
        if (this.account === null) {
@ -553,17 +547,25 @@ class JournalEntryLineItemEditor {
    }
    /**
-     * Sets the enable status of the account.
+     * Sets the enable status of the description and account.
     *
     * @param isEnabled {boolean} true to enable, or false otherwise
     */
-    #setEnableAccount(isEnabled) {
+    #setEnableDescriptionAccount(isEnabled) {
        if (isEnabled) {
            this.#descriptionControl.dataset.bsToggle = "modal";
            this.#descriptionControl.dataset.bsTarget = `#accounting-description-editor-${this.#debitCreditSubForm.debitCredit}-modal`;
            this.#descriptionControl.classList.remove("accounting-disabled");
            this.#descriptionControl.classList.add("accounting-clickable");
            this.#accountControl.dataset.bsToggle = "modal";
            this.#accountControl.dataset.bsTarget = `#accounting-account-selector-${this.#debitCreditSubForm.debitCredit}-modal`;
            this.#accountControl.classList.remove("accounting-disabled");
            this.#accountControl.classList.add("accounting-clickable");
        } else {
            this.#descriptionControl.dataset.bsToggle = "";
            this.#descriptionControl.dataset.bsTarget = "";
            this.#descriptionControl.classList.add("accounting-disabled");
            this.#descriptionControl.classList.remove("accounting-clickable");
            this.#accountControl.dataset.bsToggle = "";
            this.#accountControl.dataset.bsTarget = "";
            this.#accountControl.classList.add("accounting-disabled");
--- a/src/accounting/static/js/original-line-item-selector.js
+++ b/src/accounting/static/js/original-line-item-selector.js
@ -284,7 +284,7 @@ class OriginalLineItem {
        this.date = element.dataset.date;
        this.#debitCredit = element.dataset.debitCredit;
        this.#currencyCode = element.dataset.currencyCode;
-        this.account = new JournalEntryAccount(element.dataset.accountCode, element.dataset.accountTitle, element.dataset.accountText, false);
+        this.account = new JournalEntryAccount(element.dataset.accountCode, element.dataset.accountText, false);
        this.description = element.dataset.description;
        this.bareNetBalance = new Decimal(element.dataset.netBalance);
        this.netBalance = this.bareNetBalance;
--- a/src/accounting/static/js/timezone.js
+++ b/src/accounting/static/js/timezone.js
@ -1,37 +0,0 @@
 /* The Mia! Accounting Project
 * timezone.js: The JavaScript for the timezone
 */
 /*  Copyright (c) 2024 imacat.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
 /* Author: imacat@mail.imacat.idv.tw (imacat)
 * First written: 2024/6/4
 */
 "use strict";
 // Initializes the page JavaScript.
 document.addEventListener("DOMContentLoaded", () => {
    setTimeZone();
 });
 /**
 * Sets the time zone.
 *
 * @private
 */
 function setTimeZone() {
    document.cookie = `accounting-tz=${Intl.DateTimeFormat().resolvedOptions().timeZone}; SameSite=Strict`;
 }
--- a/src/accounting/template_filters.py
+++ b/src/accounting/template_filters.py
@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/2/25
-#  Copyright (c) 2023-2024 imacat.
+#  Copyright (c) 2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@ -17,14 +17,13 @@
 """The template filters.
 """
-import datetime as dt
+import typing as t
 from datetime import date, timedelta
 from decimal import Decimal
 from typing import Any
 from flask_babel import get_locale
 from accounting.locale import gettext
 from accounting.utils.timezone import get_tz_today
 def format_amount(value: Decimal | None) -> str | None:
@ -42,24 +41,24 @@ def format_amount(value: Decimal | None) -> str | None:
    return "{:,}".format(whole) + str(abs(frac))[1:]
-def format_date(value: dt.date) -> str:
+def format_date(value: date) -> str:
    """Formats a date to be human-friendly.
    :param value: The date.
    :return: The human-friendly date text.
    """
-    today: dt.date = get_tz_today()
+    today: date = date.today()
    if value == today:
        return gettext("Today")
-    if value == today - dt.timedelta(days=1):
+    if value == today - timedelta(days=1):
        return gettext("Yesterday")
-    if value == today + dt.timedelta(days=1):
+    if value == today + timedelta(days=1):
        return gettext("Tomorrow")
    locale = str(get_locale())
    if locale == "zh" or locale.startswith("zh_"):
-        if value == today - dt.timedelta(days=2):
+        if value == today - timedelta(days=2):
            return gettext("The day before yesterday")
-        if value == today + dt.timedelta(days=2):
+        if value == today + timedelta(days=2):
            return gettext("The day after tomorrow")
    if locale == "zh" or locale.startswith("zh_"):
        weekdays = ["一", "二", "三", "四", "五", "六", "日"]
@ -72,7 +71,7 @@ def format_date(value: dt.date) -> str:
    return "{}/{}({})".format(value.month, value.day, weekday)
-def default(value: Any, default_value: Any = "") -> Any:
+def default(value: t.Any, default_value: t.Any = "") -> t.Any:
    """Returns the default value if the given value is None.
    :param value: The value.
--- a/src/accounting/template_globals.py
+++ b/src/accounting/template_globals.py
@ -21,7 +21,7 @@ from accounting.models import Currency
 from accounting.utils.options import options
-def currency_options() -> list[Currency]:
+def currency_options() -> str:
    """Returns the currency options.
    :return: The currency options.
--- a/src/accounting/templates/accounting/account/create.html
+++ b/src/accounting/templates/accounting/account/create.html
@ -23,6 +23,6 @@ First written: 2023/2/1
 {% block header %}{% block title %}{{ A_("Add a New Account") }}{% endblock %}{% endblock %}
-{% block back_url %}{{ url_for("accounting.account.list")|accounting_or_next }}{% endblock %}
+{% block back_url %}{{ request.args.get("next") or url_for("accounting.account.list") }}{% endblock %}
 {% block action_url %}{{ url_for("accounting.account.store") }}{% endblock %}
--- a/src/accounting/templates/accounting/account/detail.html
+++ b/src/accounting/templates/accounting/account/detail.html
@ -90,7 +90,7 @@ First written: 2023/1/31
 {% endif %}
 <div class="accounting-card col-sm-6">
-  <div class="accounting-card-title">{{ obj.title }}</div>
+  <div class="accounting-card-title">{{ obj.title|title }}</div>
  <div class="accounting-card-code">{{ obj.code }}</div>
  {% if obj.is_need_offset %}
    <div>
--- a/src/accounting/templates/accounting/account/list.html
+++ b/src/accounting/templates/accounting/account/list.html
@ -32,7 +32,7 @@ First written: 2023/1/30
      {{ A_("New") }}
    </a>
  {% endif %}
-  <form class="btn btn-primary d-flex input-group" name="accounting-search-form" action="{{ url_for("accounting.account.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
+  <form class="btn btn-primary d-flex input-group" action="{{ url_for("accounting.account.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
    <input id="accounting-toolbar-search" class="form-control form-control-sm" type="search" name="q" value="{{ request.args.q }}" placeholder=" " required="required">
    <label id="accounting-toolbar-search-label" for="accounting-toolbar-search" class="input-group-text">
      <button type="submit">
--- a/src/accounting/templates/accounting/base-account/detail.html
+++ b/src/accounting/templates/accounting/base-account/detail.html
@ -33,7 +33,7 @@ First written: 2023/2/1
 </div>
 <div class="accounting-card col-sm-6">
-  <div class="accounting-card-title">{{ obj.title }}</div>
+  <div class="accounting-card-title">{{ obj.title|title }}</div>
  <div class="accounting-card-code">{{ obj.code }}</div>
  {% if obj.accounts %}
    <div>
--- a/src/accounting/templates/accounting/base-account/list.html
+++ b/src/accounting/templates/accounting/base-account/list.html
@ -26,7 +26,7 @@ First written: 2023/1/26
 {% block content %}
 <div class="mb-2 accounting-toolbar">
-  <form class="btn btn-primary d-flex input-group" name="accounting-search-form" action="{{ url_for("accounting.base-account.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
+  <form class="btn btn-primary d-flex input-group" action="{{ url_for("accounting.base-account.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
    <input id="accounting-toolbar-search" class="form-control form-control-sm" type="search" name="q" value="{{ request.args.q }}" placeholder=" " required="required">
    <label id="accounting-toolbar-search-label" for="accounting-toolbar-search" class="input-group-text">
      <button type="submit">
--- a/src/accounting/templates/accounting/base.html
+++ b/src/accounting/templates/accounting/base.html
@ -2,7 +2,7 @@
 The Mia! Accounting Project
 base.html: The application-wide base template.
- Copyright (c) 2023-2024 imacat.
+ Copyright (c) 2023 imacat.
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@ -27,6 +27,5 @@ First written: 2023/1/27
 {% block scripts %}
  <script src="{{ url_for("accounting.babel_catalog") }}"></script>
  <script src="{{ url_for("accounting.static", filename="js/timezone.js") }}"></script>
  {% block accounting_scripts %}{% endblock %}
 {% endblock %}
--- a/src/accounting/templates/accounting/currency/create.html
+++ b/src/accounting/templates/accounting/currency/create.html
@ -23,6 +23,6 @@ First written: 2023/2/6
 {% block header %}{% block title %}{{ A_("Add a New Currency") }}{% endblock %}{% endblock %}
-{% block back_url %}{{ url_for("accounting.currency.list")|accounting_or_next }}{% endblock %}
+{% block back_url %}{{ request.args.get("next") or url_for("accounting.currency.list") }}{% endblock %}
 {% block action_url %}{{ url_for("accounting.currency.store") }}{% endblock %}
--- a/src/accounting/templates/accounting/currency/list.html
+++ b/src/accounting/templates/accounting/currency/list.html
@ -32,7 +32,7 @@ First written: 2023/2/6
      {{ A_("New") }}
    </a>
  {% endif %}
-  <form class="btn btn-primary d-flex input-group" name="accounting-search-form" action="{{ url_for("accounting.currency.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
+  <form class="btn btn-primary d-flex input-group" action="{{ url_for("accounting.currency.list") }}" method="get" role="search" aria-labelledby="accounting-toolbar-search-label">
    <input id="accounting-toolbar-search" class="form-control form-control-sm" type="search" name="q" value="{{ request.args.q }}" placeholder=" " required="required">
    <label id="accounting-toolbar-search-label" for="accounting-toolbar-search" class="input-group-text">
      <button type="submit">
--- a/src/accounting/templates/accounting/journal-entry/disbursement/create.html
+++ b/src/accounting/templates/accounting/journal-entry/disbursement/create.html
@ -23,6 +23,6 @@ First written: 2023/2/25
 {% block header %}{% block title %}{{ A_("Add a New Cash Disbursement Journal Entry") }}{% endblock %}{% endblock %}
-{% block back_url %}{{ url_for("accounting-report.default")|accounting_or_next }}{% endblock %}
+{% block back_url %}{{ request.args.get("next") or url_for("accounting-report.default") }}{% endblock %}
 {% block action_url %}{{ url_for("accounting.journal-entry.store", journal_entry_type=journal_entry_type) }}{% endblock %}
--- a/src/accounting/templates/accounting/journal-entry/include/account-selector-modal.html
+++ b/src/accounting/templates/accounting/journal-entry/include/account-selector-modal.html
@ -37,7 +37,7 @@ First written: 2023/2/25
        <ul id="accounting-account-selector-{{ debit_credit }}-option-list" class="list-group accounting-selector-list">
          {% for account in account_options %}
-            <li id="accounting-account-selector-{{ debit_credit }}-option-{{ account.code }}" class="list-group-item accounting-clickable accounting-account-selector-{{ debit_credit }}-option {% if account.is_in_use %} accounting-account-is-in-use {% endif %} {% if account.is_need_offset %} accounting-account-is-need-offset {% endif %}" data-code="{{ account.code }}" data-title="{{ account.title }}" data-text="{{ account }}" data-query-values="{{ account.query_values|tojson|forceescape }}" data-bs-toggle="modal" data-bs-target="#accounting-line-item-editor-modal">
+            <li id="accounting-account-selector-{{ debit_credit }}-option-{{ account.code }}" class="list-group-item accounting-clickable accounting-account-selector-{{ debit_credit }}-option {% if account.is_in_use %} accounting-account-is-in-use {% endif %} {% if account.is_need_offset %} accounting-account-is-need-offset {% endif %}" data-code="{{ account.code }}" data-text="{{ account }}" data-query-values="{{ account.query_values|tojson|forceescape }}" data-bs-toggle="modal" data-bs-target="#accounting-line-item-editor-modal">
              {{ account }}
            </li>
          {% endfor %}
--- a/src/accounting/templates/accounting/journal-entry/include/description-editor-modal.html
+++ b/src/accounting/templates/accounting/journal-entry/include/description-editor-modal.html
@ -20,7 +20,6 @@ Author: imacat@mail.imacat.idv.tw (imacat)
 First written: 2023/2/28
 #}
 <form id="accounting-description-editor-{{ description_editor.debit_credit }}" class="accounting-description-editor" data-debit-credit="{{ description_editor.debit_credit }}">
  <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
  <div id="accounting-description-editor-{{ description_editor.debit_credit }}-modal" class="modal fade" tabindex="-1" aria-labelledby="accounting-description-editor-{{ description_editor.debit_credit }}-modal-label" aria-hidden="true">
    <div class="modal-dialog">
      <div class="modal-content">
@ -185,7 +184,7 @@ First written: 2023/2/28
          <div class="mt-3 accounting-description-editor-buttons">
            <button id="accounting-description-editor-{{ description_editor.debit_credit }}-account-confirmed" class="btn btn-primary mb-1 d-none" type="button"></button>
            {% for account in description_editor.accounts %}
-              <button class="btn btn-outline-primary d-none accounting-description-editor-{{ description_editor.debit_credit }}-account {% if account.is_need_offset %} accounting-account-is-need-offset {% endif %}" type="button" data-code="{{ account.code }}" data-title="{{ account.title }}" data-text="{{ account }}">
+              <button class="btn btn-outline-primary d-none accounting-description-editor-{{ description_editor.debit_credit }}-account {% if account.is_need_offset %} accounting-account-is-need-offset {% endif %}" type="button" data-code="{{ account.code }}" data-text="{{ account }}">
                {{ account }}
              </button>
            {% endfor %}
--- a/src/accounting/templates/accounting/journal-entry/include/detail-line-items.html
+++ b/src/accounting/templates/accounting/journal-entry/include/detail-line-items.html
@ -24,10 +24,7 @@ First written: 2023/3/14
  <li class="list-group-item accounting-journal-entry-line-item">
    <div class="d-flex justify-content-between">
      <div>
-        <div class="small">
+        <div class="small">{{ line_item.account }}</div>
          <span class="d-none d-md-inline">{{ line_item.account.code }}</span>
          {{ line_item.account.title }}
        </div>
        {% if line_item.description is not none %}
          <div>{{ line_item.description }}</div>
        {% endif %}
@ -53,10 +50,10 @@ First written: 2023/3/14
                  {% endfor %}
                </ul>
              </div>
-              {% if line_item.net_balance %}
+              {% if line_item.balance %}
                <div class="d-flex justify-content-between">
                  <div>{{ A_("Net balance") }}</div>
-                  <div>{{ line_item.net_balance|accounting_format_amount }}</div>
+                  <div>{{ line_item.balance|accounting_format_amount }}</div>
                </div>
              {% else %}
                <div class="d-flex justify-content-between">
--- a/src/accounting/templates/accounting/journal-entry/include/detail.html
+++ b/src/accounting/templates/accounting/journal-entry/include/detail.html
@ -36,7 +36,7 @@ First written: 2023/2/26
      {{ A_("Edit") }}
    </a>
  {% endif %}
-  <a class="btn btn-primary" role="button" href="{{ url_for("accounting.journal-entry.order", date=obj.date)|accounting_append_next }}">
+  <a class="btn btn-primary" role="button" href="{{ url_for("accounting.journal-entry.order", journal_entry_date=obj.date)|accounting_append_next }}">
    <i class="fa-solid fa-bars-staggered"></i>
    <span class="d-none d-md-inline">{{ A_("Order") }}</span>
  </a>
--- a/src/accounting/templates/accounting/journal-entry/include/form-line-item.html
+++ b/src/accounting/templates/accounting/journal-entry/include/form-line-item.html
@ -26,16 +26,13 @@ First written: 2023/2/25
  {% endif %}
  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-no" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-no" value="{{ line_item_index }}">
  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-original-line-item-id" class="accounting-original-line-item-id" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-original_line_item_id" value="{{ form.original_line_item_id.data|accounting_default }}" data-date="{{ form.original_line_item_date|accounting_default }}" data-text="{{ form.original_line_item_text|accounting_default }}">
-  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account-code" class="{% if form.is_need_offset %} accounting-account-is-need-offset {% endif %}" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account_code" value="{{ form.account_code.data|accounting_default }}" data-title="{{ form.account_title }}" data-text="{{ form.account_text }}">
+  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account-code" class="{% if form.is_need_offset %} accounting-account-is-need-offset {% endif %}" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account_code" value="{{ form.account_code.data|accounting_default }}" data-text="{{ form.account_text }}">
  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-description" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-description" value="{{ form.description.data|accounting_default }}">
  <input id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-amount" type="hidden" name="currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-amount" value="{{ form.amount.data|accounting_journal_entry_format_amount_input }}" data-min="{{ form.offset_total|accounting_default("0") }}">
  <div class="accounting-line-item-content">
    <div id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-control" class="form-control clickable d-flex justify-content-between {% if form.all_errors %} is-invalid {% endif %}" data-bs-toggle="modal" data-bs-target="#accounting-line-item-editor-modal">
      <div>
-        <div class="small">
+        <div id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account-text" class="small">{{ form.account_text }}</div>
          <span id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account-text-code" class="d-none d-md-inline">{{ form.account_code.data|accounting_default }}</span>
          <span id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-account-text-title">{{ form.account_title }}</span>
        </div>
        <div id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-description-text">{{ form.description.data|accounting_default }}</div>
        <div id="accounting-currency-{{ currency_index }}-{{ debit_credit }}-{{ line_item_index }}-original-line-item-text" class="fst-italic small accounting-original-line-item {% if not form.original_line_item_id.data %} d-none {% endif %}">
          {% if form.original_line_item_id.data %}{{ A_("Offset %(item)s", item=form.original_line_item_text|accounting_default) }}{% endif %}
--- a/src/accounting/templates/accounting/journal-entry/include/journal-entry-line-item-editor-modal.html
+++ b/src/accounting/templates/accounting/journal-entry/include/journal-entry-line-item-editor-modal.html
@ -20,7 +20,6 @@ Author: imacat@mail.imacat.idv.tw (imacat)
 First written: 2023/2/25
 #}
 <form id="accounting-line-item-editor">
  <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
  <div id="accounting-line-item-editor-modal" class="modal fade" tabindex="-1" aria-labelledby="accounting-line-item-editor-modal-label" aria-hidden="true">
    <div class="modal-dialog">
      <div class="modal-content">
--- a/src/accounting/templates/accounting/journal-entry/include/original-line-item-selector-modal.html
+++ b/src/accounting/templates/accounting/journal-entry/include/original-line-item-selector-modal.html
@ -37,15 +37,8 @@ First written: 2023/2/25
        <ul id="accounting-original-line-item-selector-option-list" class="list-group accounting-selector-list">
          {% for line_item in form.original_line_item_options %}
-            <li id="accounting-original-line-item-selector-option-{{ line_item.id }}" class="list-group-item d-flex justify-content-between accounting-clickable accounting-original-line-item-selector-option" data-id="{{ line_item.id }}" data-date="{{ line_item.journal_entry.date }}" data-debit-credit="{{ "debit" if line_item.is_debit else "credit" }}" data-currency-code="{{ line_item.currency.code }}" data-account-code="{{ line_item.account_code }}" data-account-title="{{ line_item.account.title }}" data-account-text="{{ line_item.account }}" data-description="{{ line_item.description|accounting_default }}" data-net-balance="{{ line_item.net_balance|accounting_journal_entry_format_amount_input }}" data-text="{{ line_item }}" data-query-values="{{ line_item.query_values|tojson|forceescape }}" data-bs-toggle="modal" data-bs-target="#accounting-line-item-editor-modal">
+            <li id="accounting-original-line-item-selector-option-{{ line_item.id }}" class="list-group-item d-flex justify-content-between accounting-clickable accounting-original-line-item-selector-option" data-id="{{ line_item.id }}" data-date="{{ line_item.journal_entry.date }}" data-debit-credit="{{ "debit" if line_item.is_debit else "credit" }}" data-currency-code="{{ line_item.currency.code }}" data-account-code="{{ line_item.account_code }}" data-account-text="{{ line_item.account }}" data-description="{{ line_item.description|accounting_default }}" data-net-balance="{{ line_item.net_balance|accounting_journal_entry_format_amount_input }}" data-text="{{ line_item }}" data-query-values="{{ line_item.query_values|tojson|forceescape }}" data-bs-toggle="modal" data-bs-target="#accounting-line-item-editor-modal">
-              <div>
+              <div>{{ line_item.journal_entry.date|accounting_format_date }} {{ line_item.description|accounting_default }}</div>
                <div class="small">
                  {{ line_item.journal_entry.date|accounting_format_date }}
                  <span class="d-none d-md-inline">{{ line_item.account.code }}</span>
                  {{ line_item.account.title }}
                </div>
                {{ line_item.description|accounting_default }}
              </div>
              <div>
                <span class="badge bg-primary rounded-pill">
                  <span id="accounting-original-line-item-selector-option-{{ line_item.id }}-net-balance">{{ line_item.net_balance|accounting_format_amount }}</span>
--- a/src/accounting/templates/accounting/journal-entry/order.html
+++ b/src/accounting/templates/accounting/journal-entry/order.html
@ -38,7 +38,7 @@ First written: 2023/2/26
 </div>
 {% if list|length > 1 and accounting_can_edit() %}
-  <form action="{{ url_for("accounting.journal-entry.sort", date=date) }}" method="post">
+  <form action="{{ url_for("accounting.journal-entry.sort", journal_entry_date=date) }}" method="post">
    <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
    {% if request.args.next %}
      <input type="hidden" name="next" value="{{ request.args.next }}">
--- a/src/accounting/templates/accounting/journal-entry/receipt/create.html
+++ b/src/accounting/templates/accounting/journal-entry/receipt/create.html
@ -23,6 +23,6 @@ First written: 2023/2/25
 {% block header %}{% block title %}{{ A_("Add a New Cash Receipt Journal Entry") }}{% endblock %}{% endblock %}
-{% block back_url %}{{ url_for("accounting-report.default")|accounting_or_next }}{% endblock %}
+{% block back_url %}{{ request.args.get("next") or url_for("accounting-report.default") }}{% endblock %}
 {% block action_url %}{{ url_for("accounting.journal-entry.store", journal_entry_type=journal_entry_type) }}{% endblock %}
--- a/src/accounting/templates/accounting/journal-entry/receipt/detail.html
+++ b/src/accounting/templates/accounting/journal-entry/receipt/detail.html
@ -23,7 +23,7 @@ First written: 2023/2/26
 {% block as_trasfer %}
  <a class="btn btn-primary" role="button" href="{{ url_for("accounting.journal-entry.edit", journal_entry=obj)|accounting_journal_entry_to_transfer|accounting_inherit_next }}">
-    <i class="fa-solid fa-table-columns"></i>
+    <i class="fa-solid fa-bars-staggered"></i>
    <span class="d-none d-md-inline">{{ A_("As Transfer") }}</span>
  </a>
 {% endblock %}
--- a/src/accounting/templates/accounting/journal-entry/transfer/create.html
+++ b/src/accounting/templates/accounting/journal-entry/transfer/create.html
@ -23,6 +23,6 @@ First written: 2023/2/25
 {% block header %}{% block title %}{{ A_("Add a New Transfer Journal Entry") }}{% endblock %}{% endblock %}
-{% block back_url %}{{ url_for("accounting-report.default")|accounting_or_next }}{% endblock %}
+{% block back_url %}{{ request.args.get("next") or url_for("accounting-report.default") }}{% endblock %}
 {% block action_url %}{{ url_for("accounting.journal-entry.store", journal_entry_type=journal_entry_type) }}{% endblock %}
--- a/src/accounting/templates/accounting/option/detail.html
+++ b/src/accounting/templates/accounting/option/detail.html
@ -42,11 +42,11 @@ First written: 2023/3/22
 <tbody>
 <tr>
  <th scope="row">{{ A_("Default Currency") }}</th>
-  <td>{{ obj.default_currency }}</td>
+  <td>{{ obj.default_currency_text }}</td>
 </tr>
 <tr>
  <th scope="row">{{ A_("Default Account for the Income and Expenses Log") }}</th>
-  <td>{{ obj.default_ie_account }}</td>
+  <td>{{ obj.default_ie_account_code_text }}</td>
 </tr>
 </tbody>
 </table>
--- a/Show More
+++ b/Show More