mia-accounting-django/accounting/management/commands/accounting_sample.py

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# The accounting application of the Mia project.
# by imacat <imacat@mail.imacat.idv.tw>, 2020/7/22
# Copyright (c) 2020 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 command to populate the database with sample accounting data.
"""
import datetime
import getpass
import random
from typing import Optional
from django.contrib.auth import get_user_model
from django.core.exceptions import ObjectDoesNotExist
from django.core.management import BaseCommand, CommandParser, CommandError, \
call_command
from django.db import transaction
from django.utils import timezone, formats
from django.utils.translation import gettext as _
from accounting.models import Account, Record
from accounting.utils import DataFiller
class Command(BaseCommand):
"""Populates the database with sample accounting data."""
help = "Fills the database with sample accounting data."
def __init__(self):
super().__init__()
self._filler: Optional[DataFiller] = None
def add_arguments(self, parser):
"""Adds command line arguments to the parser.
Args:
parser (CommandParser): The command line argument parser.
"""
parser.add_argument("--user", "-u", help="User")
def handle(self, *args, **options):
"""Runs the command.
Args:
*args (list[str]): The command line arguments.
**options (dict[str,str]): The command line switches.
"""
if Record.objects.count() > 0:
error = "Refuse to fill in sample data with existing data."
raise CommandError(error, returncode=1)
# Gets the user to use
user = self.get_user(options["user"])
if Account.objects.count() == 0:
username = getattr(user, user.USERNAME_FIELD)
call_command("accounting_accounts", F"-u={username}")
self.stdout.write(F"Filling sample data as \"{user}\"")
with transaction.atomic():
self._filler = DataFiller(user)
self.add_payrolls(5)
self._filler.add_income_transaction(
-15,
[(1113, _("ATM withdrawal"), 2000)])
self._filler.add_transfer_transaction(
-14,
[(6254, _("HSR—New Land→South Lake City"), 1490)],
[(2141, _("HSR—New Land→South Lake City"), 1490)])
self._filler.add_transfer_transaction(
-14,
[(6273, _("Movies—The Avengers"), 80)],
[(2141, _("Movies—The Avengers"), 80)])
self._filler.add_transfer_transaction(
-13,
[(6273, _("Movies—2001: A Space Odyssey"), 80)],
[(2141, _("Movies—2001: A Space Odyssey"), 80)])
self._filler.add_transfer_transaction(
-11,
[(2141, _("Movies—The Avengers"), 80)],
[(1113, _("Movies—The Avengers"), 80)])
self._filler.add_expense_transaction(
-13,
2020-09-01 11:25:26 +08:00
[(6273, _("Bus—2623—Uptown→City Park"), 15.5)])
self._filler.add_expense_transaction(
-2,
[(6272, _("Lunch—Spaghetti"), random.randint(40, 200)),
(6272, _("Drink—Tea"), random.randint(40, 200))])
self._filler.add_expense_transaction(
-1,
([(6272, _("Lunch—Pizza"), random.randint(40, 200)),
(6272, _("Drink—Tea"), random.randint(40, 200))]))
self._filler.add_expense_transaction(
-1,
[(6272, _("Lunch—Spaghetti"), random.randint(40, 200)),
(6272, _("Drink—Soda"), random.randint(40, 200))])
self._filler.add_expense_transaction(
0,
[(6272, _("Lunch—Salad"), random.randint(40, 200)),
(6272, _("Drink—Coffee"), random.randint(40, 200))])
@staticmethod
def get_user(username_option):
"""Returns the current user.
Args:
username_option: The username specified in the options.
Returns:
The current user.
"""
user_model = get_user_model()
if username_option is not None:
try:
return user_model.objects.get(**{
user_model.USERNAME_FIELD: username_option
})
except ObjectDoesNotExist:
error = F"User \"{username_option}\" does not exist."
raise CommandError(error, returncode=1)
if user_model.objects.count() == 0:
call_command("createsuperuser")
return user_model.objects.first()
if user_model.objects.count() == 1:
return user_model.objects.first()
try:
return user_model.objects.get(**{
user_model.USERNAME_FIELD: getpass.getuser()
})
except ObjectDoesNotExist:
error = "Please specify the user with -u."
raise CommandError(error, returncode=1)
def add_payrolls(self, months: int):
"""Adds the payrolls for certain number of months.
Args:
months: The number of months to add.
"""
today = timezone.localdate()
payday = today.replace(day=5)
if payday > today:
payday = self.previous_month(payday)
for i in range(months):
self.add_payroll(payday)
payday = self.previous_month(payday)
@staticmethod
def previous_month(date: datetime.date):
"""Obtain the same day in the previous month.
Args:
date: The date.
Returns:
The same day in the previous month.
"""
month = date.month - 1
if month < 1:
year = date.year - 1
return date.replace(year=year, month=12)
return date.replace(month=month)
def add_payroll(self, payday: datetime.date):
"""Adds the payroll for a payday.
Args:
payday: The payday.
"""
income = random.randint(40000, 50000)
pension = 882 if income <= 40100\
else 924 if income <= 42000\
else 966 if income <= 43900\
else 1008
insurance = 564 if income <= 40100\
else 591 if income <= 42000\
else 618 if income <= 43900\
else 644 if income <= 45800\
else 678 if income <= 48200\
else 712
tax = round(income * 0.05)
savings = income - pension - insurance - tax
previous_month = self.previous_month(payday)
month = formats.date_format(previous_month, format="F")
self._filler.add_transfer_transaction(
payday,
[(1113, _("Payroll Transfer"), savings),
(1314, _("Pension for {month}").format(month=month), pension),
(6262, _("Health insurance for {month}").format(month=month),
insurance),
(1255, _("Income Tax"), tax)],
[(4611, _("Payroll for {month}").format(month=month), income)])