# The Mia! Accounting Flask Project.
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/7

#  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 pseudo account for the income and expenses log.

"""
import typing as t

from flask import current_app

from accounting.locale import gettext
from accounting.models import Account


class IncomeExpensesAccount:
    """The pseudo account for the income and expenses log."""
    CURRENT_AL_CODE: str = "0000-000"
    """The account code for the current assets and liabilities."""

    def __init__(self, account: Account | None = None):
        """Constructs the pseudo account for the income and expenses log.

        :param account: The actual account.
        """
        self.account: Account | None = account
        self.id: int = -1 if account is None else account.id
        """The ID."""
        self.code: str = "" if account is None else account.code
        """The code."""
        self.title: str = "" if account is None else account.title
        """The title."""
        self.str: str = "" if account is None else str(account)
        """The string representation of the account."""

    def __str__(self) -> str:
        """Returns the string representation of the account.

        :return: The string representation of the account.
        """
        return self.str

    @classmethod
    def current_assets_and_liabilities(cls) -> t.Self:
        """Returns the pseudo account for current assets and liabilities.

        :return: The pseudo account for current assets and liabilities.
        """
        account: cls = cls()
        account.id = 0
        account.code = cls.CURRENT_AL_CODE
        account.title = gettext("current assets and liabilities")
        account.str = account.title
        return account


def default_ie_account_code() -> str:
    """Returns the default account code for the income and expenses log.

    :return: The default account code for the income and expenses log.
    """
    with current_app.app_context():
        return current_app.config.get("DEFAULT_IE_ACCOUNT", Account.CASH_CODE)


def default_ie_account() -> IncomeExpensesAccount:
    """Returns the default account for the income and expenses log.

    :return: The default account for the income and expenses log.
    """
    code: str = default_ie_account_code()
    if code == IncomeExpensesAccount.CURRENT_AL_CODE:
        return IncomeExpensesAccount.current_assets_and_liabilities()
    return IncomeExpensesAccount(Account.find_by_code(code))