mirror of
https://github.com/ae-utbm/sith3.git
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92 lines
3.4 KiB
Python
92 lines
3.4 KiB
Python
from django.db import models, DataError
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from django.utils.translation import ugettext_lazy as _
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from accounting.models import CurrencyField
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from counter.models import Counter, Product, Customer
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from core.models import User
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class Basket(models.Model):
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"""
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Basket is built when the user connects to an eboutic page
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"""
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user = models.ForeignKey(User, related_name='baskets', verbose_name=_('user'), blank=False)
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date = models.DateTimeField(_('date'), auto_now=True)
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def add_product(self, p, q = 1):
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item = self.items.filter(product_id=p.id).first()
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if item is None:
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BasketItem(basket=self, product_id=p.id, product_name=p.name, type=p.product_type.name,
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quantity=q, product_unit_price=p.selling_price).save()
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else:
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item.quantity += q
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item.save()
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def del_product(self, p, q = 1):
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item = self.items.filter(product_id=p.id).first()
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if item is not None:
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item.quantity -= q
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item.save()
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if item.quantity <= 0:
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item.delete()
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def get_total(self):
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total = 0
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for i in self.items.all():
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total += i.quantity * i.product_unit_price
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return total
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def __str__(self):
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return "Basket (%d items)" % self.items.all().count()
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class Invoice(models.Model):
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"""
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Invoices are generated once the payment has been validated
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"""
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user = models.ForeignKey(User, related_name='invoices', verbose_name=_('user'), blank=False)
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date = models.DateTimeField(_('date'), auto_now=True)
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payment_method = models.CharField(choices=[('CREDIT_CARD', _('Credit card')), ('SITH_ACCOUNT', _('Sith account'))],
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max_length=20, verbose_name=_('payment method'))
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validated = models.BooleanField(_("validated"), default=False)
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def get_total(self):
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total = 0
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for i in self.items.all():
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total += i.quantity * i.product_unit_price
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return total
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def validate(self, *args, **kwargs):
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if self.validated:
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raise DataError(_("Invoice already validated"))
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from counter.models import Customer
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if not Customer.objects.filter(user=self.user).exists():
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Customer(user=self.user, account_id=Customer.generate_account_id(), amount=0).save()
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if self.payment_method == "SITH_ACCOUNT":
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self.user.customer.amount -= self.get_total()
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self.user.customer.save()
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else:
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for i in self.items.filter(type="REFILLING").all():
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self.user.customer.amount += i.product_unit_price * i.quantity
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self.user.customer.save()
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self.validated = True
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self.save()
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class AbstractBaseItem(models.Model):
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product_id = models.IntegerField(_('product id'))
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product_name = models.CharField(_('product name'), max_length=255)
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type = models.CharField(_('product type'), max_length=255)
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product_unit_price = CurrencyField(_('unit price'))
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quantity = models.IntegerField(_('quantity'))
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class Meta:
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abstract = True
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def __str__(self):
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return "Item: %s (%s) x%d" % (self.product_name, self.product_unit_price, self.quantity)
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class BasketItem(AbstractBaseItem):
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basket = models.ForeignKey(Basket, related_name='items', verbose_name=_('basket'))
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class InvoiceItem(AbstractBaseItem):
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invoice = models.ForeignKey(Invoice, related_name='items', verbose_name=_('invoice'))
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