261 lines
7 KiB
Python
261 lines
7 KiB
Python
from django.conf import settings
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from django.db import models
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from django.db.models.aggregates import Sum
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from django.contrib.postgres.fields import DateTimeRangeField, JSONField
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from django.utils.text import slugify
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from django.utils.translation import ugettext_lazy as _
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from django.utils import timezone
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from django.core.urlresolvers import reverse_lazy
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from bornhack.utils import CreatedUpdatedModel, UUIDModel
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from .managers import ProductQuerySet
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import hashlib
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import io
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import base64
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import qrcode
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class Order(CreatedUpdatedModel):
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class Meta:
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unique_together = ('user', 'open')
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products = models.ManyToManyField(
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'shop.Product',
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through='shop.OrderProductRelation'
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)
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user = models.ForeignKey(
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'auth.User',
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verbose_name=_('User'),
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help_text=_('The user this order belongs to.'),
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related_name='orders',
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)
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paid = models.BooleanField(
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verbose_name=_('Paid?'),
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help_text=_('Whether this order has been paid.'),
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default=False,
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)
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open = models.NullBooleanField(
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verbose_name=_('Open?'),
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help_text=_('Whether this order is open or not. "None" means closed.'),
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default=True,
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)
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camp = models.ForeignKey(
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'camps.Camp',
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verbose_name=_('Camp'),
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help_text=_('The camp this order is for.'),
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)
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CREDIT_CARD = 'credit_card'
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BLOCKCHAIN = 'blockchain'
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BANK_TRANSFER = 'bank_transfer'
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PAYMENT_METHODS = [
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CREDIT_CARD,
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BLOCKCHAIN,
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BANK_TRANSFER,
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]
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PAYMENT_METHOD_CHOICES = [
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(CREDIT_CARD, 'Credit card'),
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(BLOCKCHAIN, 'Blockchain'),
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(BANK_TRANSFER, 'Bank transfer'),
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]
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payment_method = models.CharField(
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max_length=50,
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choices=PAYMENT_METHOD_CHOICES,
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default=BLOCKCHAIN
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)
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def get_number_of_items(self):
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return self.products.aggregate(
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sum=Sum('orderproductrelation__quantity')
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)['sum']
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@property
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def vat(self):
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return self.total*0.2
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@property
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def total(self):
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return self.products.aggregate(
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sum=Sum(
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models.F('orderproductrelation__product__price') *
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models.F('orderproductrelation__quantity'),
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output_field=models.IntegerField()
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)
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)['sum']
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def get_epay_accept_url(self, request):
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return 'https://' + request.get_host() + str(reverse_lazy('shop:epay_thanks', kwargs={'pk': self.pk}))
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def get_epay_cancel_url(self, request):
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return 'https://' + request.get_host() + str(reverse_lazy('shop:order_detail', kwargs={'pk': self.pk}))
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@property
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def description(self):
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return "BornHack 2016 order #%s" % self.pk
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def get_absolute_url(self):
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return str(reverse_lazy('shop:order_detail', kwargs={'pk': self.pk}))
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class ProductCategory(CreatedUpdatedModel, UUIDModel):
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class Meta:
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verbose_name = 'Product category'
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verbose_name_plural = 'Product categories'
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name = models.CharField(max_length=150)
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slug = models.SlugField()
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public = models.BooleanField(default=True)
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def __str__(self):
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return self.name
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def save(self, **kwargs):
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self.slug = slugify(self.name)
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super(ProductCategory, self).save(**kwargs)
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class Product(CreatedUpdatedModel, UUIDModel):
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class Meta:
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verbose_name = 'Product'
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verbose_name_plural = 'Products'
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ordering = ['available_in']
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category = models.ForeignKey(
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'shop.ProductCategory',
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related_name='products'
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)
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name = models.CharField(max_length=150)
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slug = models.SlugField()
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price = models.IntegerField(
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help_text=_('Price of the product (in DKK).')
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)
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description = models.TextField()
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available_in = DateTimeRangeField(
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help_text=_(
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'Which period is this product available for purchase? | '
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'(Format: YYYY-MM-DD HH:MM) | Only one of start/end is required'
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)
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)
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objects = ProductQuerySet.as_manager()
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def __str__(self):
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return '{} ({} DKK)'.format(
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self.name,
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self.price,
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)
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def save(self, **kwargs):
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self.slug = slugify(self.name)
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super(Product, self).save(**kwargs)
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def is_available(self):
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now = timezone.now()
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return now in self.available_in
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class OrderProductRelation(CreatedUpdatedModel):
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order = models.ForeignKey('shop.Order')
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product = models.ForeignKey('shop.Product')
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quantity = models.PositiveIntegerField()
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handed_out = models.BooleanField(default=False)
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@property
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def total(self):
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return self.product.price * self.quantity
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class EpayCallback(CreatedUpdatedModel, UUIDModel):
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class Meta:
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verbose_name = 'Epay Callback'
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verbose_name_plural = 'Epay Callbacks'
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ordering = ['-created']
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payload = JSONField()
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md5valid = models.BooleanField(default=False)
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def __str__(self):
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return 'callback at %s (md5 valid: %s)' % (self.created, self.md5valid)
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class EpayPayment(CreatedUpdatedModel, UUIDModel):
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class Meta:
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verbose_name = 'Epay Payment'
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verbose_name_plural = 'Epay Payments'
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order = models.OneToOneField('shop.Order')
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callback = models.ForeignKey('shop.EpayCallback')
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txnid = models.IntegerField()
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class Invoice(CreatedUpdatedModel):
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order = models.OneToOneField('shop.Order')
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sent_to_customer = models.BooleanField(default=False)
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def __str__(self):
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return 'invoice#%s - order %s - %s - total %s DKK (sent to customer: %s)' % (
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self.id,
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self.order.id,
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self.order.created,
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self.order.total,
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self.sent_to_customer,
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)
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class Ticket(CreatedUpdatedModel, UUIDModel):
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order = models.ForeignKey('shop.Order')
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product = models.ForeignKey('shop.Product')
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qrcode_base64 = models.TextField(null=True, blank=True)
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name = models.CharField(
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max_length=100,
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help_text=(
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'Name of the person this ticket belongs to. '
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'This can be different from the buying user.'
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),
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)
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def __str__(self):
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return 'Ticket {user} {product}'.format(
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user=self.order.user,
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product=self.product
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)
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def save(self, **kwargs):
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super(Ticket, self).save(**kwargs)
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self.qrcode_base64 = self.get_qr_code()
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super(Ticket, self).save(**kwargs)
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def get_token(self):
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return hashlib.sha256(
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'{ticket_id}{user_id}{secret_key}'.format(
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ticket_id=self.pk,
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user_id=self.order.user.pk,
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secret_key=settings.SECRET_KEY,
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)
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).hexdigest()
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def get_qr_code(self):
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qr = qrcode.make(self.get_token())
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file_like = io.BytesIO()
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qr.save(file_like)
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qrcode_base64 = base64.b64encode(file_like.getvalue())
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return qrcode_base64
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def get_qr_code_url(self):
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return 'data:image/png;base64,{}'.format(self.qrcode_base64)
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