mirror of https://gitlab.crans.org/bde/nk20
164 lines
3.8 KiB
Python
164 lines
3.8 KiB
Python
# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.db.models import Q
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from django.utils.translation import gettext_lazy as _
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from note.models import NoteSpecial, SpecialTransaction
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class Invoice(models.Model):
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"""
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An invoice model that can generate a true invoice
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"""
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id = models.PositiveIntegerField(
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primary_key=True,
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verbose_name=_("Invoice identifier"),
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)
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bde = models.CharField(
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max_length=32,
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default='Saperlistpopette.png',
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choices=(
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('Saperlistpopette.png', 'Saper[list]popette'),
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('Finalist.png', 'Fina[list]'),
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('Listorique.png', '[List]orique'),
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('Satellist.png', 'Satel[list]'),
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('Monopolist.png', 'Monopo[list]'),
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('Kataclist.png', 'Katac[list]'),
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),
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verbose_name=_("BDE"),
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)
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object = models.CharField(
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max_length=255,
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verbose_name=_("Object"),
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)
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description = models.TextField(
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verbose_name=_("Description")
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)
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name = models.CharField(
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max_length=255,
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verbose_name=_("Name"),
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)
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address = models.TextField(
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verbose_name=_("Address"),
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)
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date = models.DateField(
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auto_now_add=True,
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verbose_name=_("Place"),
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)
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acquitted = models.BooleanField(
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verbose_name=_("Acquitted"),
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)
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class Product(models.Model):
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"""
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Product that appear on an invoice.
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"""
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invoice = models.ForeignKey(
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Invoice,
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on_delete=models.PROTECT,
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)
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designation = models.CharField(
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max_length=255,
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verbose_name=_("Designation"),
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)
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quantity = models.PositiveIntegerField(
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verbose_name=_("Quantity")
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)
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amount = models.PositiveIntegerField(
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verbose_name=_("Unit price")
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)
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@property
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def amount_euros(self):
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return self.amount / 100
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@property
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def total(self):
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return self.quantity * self.amount
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@property
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def total_euros(self):
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return self.total / 100
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class Remittance(models.Model):
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"""
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Treasurers want to regroup checks or bank transfers in bank remittances.
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"""
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date = models.DateTimeField(
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auto_now_add=True,
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verbose_name=_("Date"),
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)
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type = models.ForeignKey(
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NoteSpecial,
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on_delete=models.PROTECT,
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verbose_name=_("Type"),
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)
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comment = models.CharField(
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max_length=255,
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verbose_name=_("Comment"),
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)
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closed = models.BooleanField(
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default=False,
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verbose_name=_("Closed"),
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)
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@property
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def transactions(self):
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return SpecialTransaction.objects.filter(specialtransactionproxy__remittance=self)
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@property
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def size(self):
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return self.transactions.count()
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@property
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def amount(self):
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return sum(transaction.total for transaction in self.transactions.all())
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def full_clean(self, exclude=None, validate_unique=True):
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ret = super().full_clean(exclude, validate_unique)
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if self.transactions.filter(~Q(source=self.type)).exists():
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raise ValidationError("All transactions in a remittance must have the same type")
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return ret
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class SpecialTransactionProxy(models.Model):
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"""
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In order to keep modularity, we don't that the Note app depends on the treasury app.
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That's why we create a proxy in this app, to link special transactions and remittances.
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If it isn't very clean, that makes what we want.
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"""
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transaction = models.OneToOneField(
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SpecialTransaction,
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on_delete=models.CASCADE,
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)
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remittance = models.ForeignKey(
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Remittance,
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on_delete=models.PROTECT,
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null=True,
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verbose_name=_("Remittance"),
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)
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