161 lines
5.0 KiB
Python
161 lines
5.0 KiB
Python
# lingo - payment and billing system
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# Copyright (C) 2022 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import copy
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from django.contrib.auth.models import Group
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from django.contrib.postgres.fields import JSONField
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from django.db import models
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from django.utils.formats import date_format
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from django.utils.text import slugify
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from django.utils.translation import gettext_lazy as _
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from lingo.utils.misc import generate_slug
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class RegieImportError(Exception):
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pass
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class Regie(models.Model):
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label = models.CharField(_('Label'), max_length=150)
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slug = models.SlugField(_('Identifier'), max_length=160, unique=True)
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description = models.TextField(
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_('Description'), null=True, blank=True, help_text=_('Optional regie description.')
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)
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cashier_role = models.ForeignKey(
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Group,
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blank=True,
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null=True,
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default=None,
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related_name='+',
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verbose_name=_('Cashier Role'),
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on_delete=models.SET_NULL,
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)
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class Meta:
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ordering = ['label']
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def __str__(self):
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return self.label
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def save(self, *args, **kwargs):
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if not self.slug:
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self.slug = generate_slug(self)
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super().save(*args, **kwargs)
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@property
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def base_slug(self):
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return slugify(self.label)
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def export_json(self):
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return {
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'label': self.label,
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'slug': self.slug,
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'description': self.description,
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'permissions': {
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'cashier': self.cashier_role.name if self.cashier_role else None,
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},
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}
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@classmethod
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def import_json(cls, data):
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data = copy.deepcopy(data)
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permissions = data.pop('permissions') or {}
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role_name = permissions.get('cashier')
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if role_name:
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try:
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data['cashier_role'] = Group.objects.get(name=role_name)
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except Group.DoesNotExists:
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raise RegieImportError('Missing role: %s' % role_name)
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except Group.MultipleObjectsReturned:
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raise RegieImportError('Multiple role exist with the name: %s' % role_name)
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regie, created = cls.objects.update_or_create(slug=data['slug'], defaults=data)
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return created, regie
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class Campaign(models.Model):
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date_start = models.DateField(_('Start date'))
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date_end = models.DateField(_('End date'))
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date_issue = models.DateField(_('Issue date'))
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def __str__(self):
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return _('From %(start)s to %(end)s') % {
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'start': date_format(self.date_start, 'd/m/Y'),
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'end': date_format(self.date_end, 'd/m/Y'),
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}
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class Pool(models.Model):
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campaign = models.ForeignKey(Campaign, on_delete=models.PROTECT)
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draft = models.BooleanField(default=True)
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created_at = models.DateTimeField(auto_now_add=True)
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class AbstractInvoice(models.Model):
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label = models.CharField(_('Label'), max_length=300)
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total_amount = models.DecimalField(max_digits=9, decimal_places=2, default=0)
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date_issue = models.DateField(_('Issue date'))
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regie = models.ForeignKey(Regie, on_delete=models.PROTECT)
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payer = models.CharField(_('Payer'), max_length=300)
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pool = models.ForeignKey(Pool, on_delete=models.PROTECT)
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class Meta:
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abstract = True
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class DraftInvoice(AbstractInvoice):
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pass
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class Invoice(AbstractInvoice):
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pass
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class AbstractInvoiceLine(models.Model):
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slug = models.SlugField(max_length=250)
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label = models.CharField(max_length=260)
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quantity = models.FloatField()
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unit_amount = models.DecimalField(max_digits=9, decimal_places=2)
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total_amount = models.DecimalField(max_digits=9, decimal_places=2)
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user_external_id = models.CharField(max_length=250)
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payer_external_id = models.CharField(max_length=250)
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event = JSONField(default=dict)
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pricing_data = JSONField(default=dict)
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status = models.CharField(
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max_length=10,
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choices=[
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('success', _('Success')),
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('error', _('Error')),
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],
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)
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pool = models.ForeignKey(Pool, on_delete=models.PROTECT)
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class Meta:
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abstract = True
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class DraftInvoiceLine(AbstractInvoiceLine):
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invoice = models.ForeignKey(DraftInvoice, on_delete=models.PROTECT, null=True, related_name='lines')
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class InvoiceLine(AbstractInvoiceLine):
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invoice = models.ForeignKey(Invoice, on_delete=models.PROTECT, null=True, related_name='lines')
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