bornhack-website/shop/models.py

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from django.conf import settings
from django.db import models
from django.db.models.aggregates import Sum
from django.contrib.postgres.fields import DateTimeRangeField, JSONField
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from django.http import HttpResponse
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from django.utils.text import slugify
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
from utils.models import UUIDModel, CreatedUpdatedModel
from .managers import ProductQuerySet
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import hashlib, io, base64, qrcode
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from decimal import Decimal
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from datetime import timedelta
class Order(CreatedUpdatedModel):
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class Meta:
unique_together = ('user', 'open')
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ordering = ['-created']
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products = models.ManyToManyField(
'shop.Product',
through='shop.OrderProductRelation'
)
user = models.ForeignKey(
'auth.User',
verbose_name=_('User'),
help_text=_('The user this order belongs to.'),
related_name='orders',
)
paid = models.BooleanField(
verbose_name=_('Paid?'),
help_text=_('Whether this order has been paid.'),
default=False,
)
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open = models.NullBooleanField(
verbose_name=_('Open?'),
help_text=_('Whether this order is open or not. "None" means closed.'),
default=True,
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)
camp = models.ForeignKey(
'camps.Camp',
verbose_name=_('Camp'),
help_text=_('The camp this order is for.'),
)
CREDIT_CARD = 'credit_card'
BLOCKCHAIN = 'blockchain'
BANK_TRANSFER = 'bank_transfer'
PAYMENT_METHODS = [
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CREDIT_CARD,
BLOCKCHAIN,
BANK_TRANSFER,
]
PAYMENT_METHOD_CHOICES = [
(CREDIT_CARD, 'Credit card'),
(BLOCKCHAIN, 'Blockchain'),
(BANK_TRANSFER, 'Bank transfer'),
]
payment_method = models.CharField(
max_length=50,
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choices=PAYMENT_METHOD_CHOICES,
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default=BLOCKCHAIN
)
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def __str__(self):
return 'order id #%s' % self.pk
def get_number_of_items(self):
return self.products.aggregate(
sum=Sum('orderproductrelation__quantity')
)['sum']
@property
def vat(self):
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return Decimal(self.total*Decimal(0.2))
@property
def total(self):
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return Decimal(self.products.aggregate(
sum=Sum(
models.F('orderproductrelation__product__price') *
models.F('orderproductrelation__quantity'),
output_field=models.IntegerField()
)
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)['sum'])
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def get_coinify_callback_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:coinify_callback', kwargs={'pk': self.pk}))
def get_coinify_thanks_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:coinify_thanks', kwargs={'pk': self.pk}))
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def get_epay_accept_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:epay_thanks', kwargs={'pk': self.pk}))
def get_cancel_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:order_detail', kwargs={'pk': self.pk}))
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def get_epay_callback_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:epay_callback', kwargs={'pk': self.pk}))
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@property
def description(self):
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return "BornHack %s order #%s" % (self.camp.start.year, self.pk)
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def get_absolute_url(self):
return str(reverse_lazy('shop:order_detail', kwargs={'pk': self.pk}))
def mark_as_paid(self):
self.paid = True
for order_product in self.orderproductrelation_set.all():
category_pk = str(order_product.product.category.pk)
print(order_product, category_pk, settings.TICKET_CATEGORY_ID)
if category_pk == settings.TICKET_CATEGORY_ID:
for _ in range(0, order_product.quantity):
ticket = Ticket(
order=self,
product=order_product.product,
)
ticket.save()
self.save()
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def is_not_handed_out(self):
if self.orderproductrelation_set.filter(handed_out=True).count() == 0:
return True
else:
return False
def is_partially_handed_out(self):
if self.orderproductrelation_set.filter(handed_out=True).count() != 0 and self.orderproductrelation_set.filter(handed_out=False).count() != 0:
# some products are handed out, others are not
return True
else:
return False
def is_fully_handed_out(self):
if self.orderproductrelation_set.filter(handed_out=False).count() == 0:
return True
else:
return False
@property
def handed_out_status(self):
if self.is_not_handed_out():
return "no"
elif self.is_partially_handed_out():
return "partially"
elif self.is_fully_handed_out():
return "fully"
else:
return False
class ProductCategory(CreatedUpdatedModel, UUIDModel):
class Meta:
verbose_name = 'Product category'
verbose_name_plural = 'Product categories'
name = models.CharField(max_length=150)
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slug = models.SlugField()
public = models.BooleanField(default=True)
def __str__(self):
return self.name
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def save(self, **kwargs):
self.slug = slugify(self.name)
super(ProductCategory, self).save(**kwargs)
class Product(CreatedUpdatedModel, UUIDModel):
class Meta:
verbose_name = 'Product'
verbose_name_plural = 'Products'
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ordering = ['available_in']
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category = models.ForeignKey(
'shop.ProductCategory',
related_name='products'
)
name = models.CharField(max_length=150)
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slug = models.SlugField()
price = models.IntegerField(
help_text=_('Price of the product (in DKK).')
)
description = models.TextField()
available_in = DateTimeRangeField(
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help_text=_(
'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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objects = ProductQuerySet.as_manager()
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def __str__(self):
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return '{} ({} DKK)'.format(
self.name,
self.price,
)
def is_available(self):
now = timezone.now()
return now in self.available_in
class OrderProductRelation(CreatedUpdatedModel):
order = models.ForeignKey('shop.Order')
product = models.ForeignKey('shop.Product')
quantity = models.PositiveIntegerField()
handed_out = models.BooleanField(default=False)
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@property
def total(self):
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return Decimal(self.product.price * self.quantity)
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class EpayCallback(CreatedUpdatedModel, UUIDModel):
class Meta:
verbose_name = 'Epay Callback'
verbose_name_plural = 'Epay Callbacks'
ordering = ['-created']
payload = JSONField()
md5valid = models.BooleanField(default=False)
def __str__(self):
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return 'callback at %s (md5 valid: %s)' % (self.created, self.md5valid)
class EpayPayment(CreatedUpdatedModel, UUIDModel):
class Meta:
verbose_name = 'Epay Payment'
verbose_name_plural = 'Epay Payments'
order = models.OneToOneField('shop.Order')
callback = models.ForeignKey('shop.EpayCallback')
txnid = models.IntegerField()
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class Invoice(CreatedUpdatedModel):
order = models.OneToOneField('shop.Order')
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pdf = models.FileField(null=True, blank=True, upload_to='invoices/')
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sent_to_customer = models.BooleanField(default=False)
def __str__(self):
return 'invoice#%s - order %s - %s - total %s DKK (sent to customer: %s)' % (
self.id,
self.order.id,
self.order.created,
self.order.total,
self.sent_to_customer,
)
@property
def filename(self):
return 'bornhack_invoice_%s.pdf' % self.pk
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def regretdate(self):
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return self.created+timedelta(days=15)
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class CoinifyAPIInvoice(CreatedUpdatedModel):
invoicejson = JSONField()
order = models.OneToOneField('shop.Order')
def __str__(self):
return "coinifyinvoice for order #%s" % self.order.id
class CoinifyAPICallback(CreatedUpdatedModel):
headers = JSONField()
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payload = JSONField()
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order = models.ForeignKey('shop.Order')
valid = models.BooleanField(default=False)
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def __str__(self):
return 'order #%s callback at %s' % (self.order.id, self.created)
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class Ticket(CreatedUpdatedModel, UUIDModel):
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order = models.ForeignKey('shop.Order', related_name='tickets')
product = models.ForeignKey('shop.Product', related_name='tickets')
qrcode_base64 = models.TextField(null=True, blank=True)
name = models.CharField(
max_length=100,
help_text=(
'Name of the person this ticket belongs to. '
'This can be different from the buying user.'
),
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null=True,
blank=True,
)
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email = models.EmailField(
null=True,
blank=True,
)
def __str__(self):
return 'Ticket {user} {product}'.format(
user=self.order.user,
product=self.product
)
def save(self, **kwargs):
super(Ticket, self).save(**kwargs)
self.qrcode_base64 = self.get_qr_code()
super(Ticket, self).save(**kwargs)
def get_token(self):
return hashlib.sha256(
'{ticket_id}{user_id}{secret_key}'.format(
ticket_id=self.pk,
user_id=self.order.user.pk,
secret_key=settings.SECRET_KEY,
)
).hexdigest()
def get_qr_code(self):
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qr = qrcode.make(
self.get_token(),
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_H
).resize((250,250))
file_like = io.BytesIO()
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qr.save(file_like, format='png')
qrcode_base64 = base64.b64encode(file_like.getvalue())
return qrcode_base64
def get_qr_code_url(self):
return 'data:image/png;base64,{}'.format(self.qrcode_base64)
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def get_absolute_url(self):
return str(reverse_lazy('shop:ticket_detail', kwargs={'pk': self.pk}))