bornhack-website/shop/models.py

481 lines
14 KiB
Python

from django.conf import settings
from django.db import models
from django.db.models.aggregates import Sum
from django.contrib import messages
from django.contrib.postgres.fields import DateTimeRangeField, JSONField
from django.http import HttpResponse
from django.utils.text import slugify
from django.utils.translation import ugettext_lazy as _
from django.utils import timezone
from django.core.urlresolvers import reverse_lazy
from utils.models import UUIDModel, CreatedUpdatedModel
from .managers import ProductQuerySet, OrderQuerySet
import hashlib, io, base64, qrcode
from decimal import Decimal
from datetime import timedelta
from unidecode import unidecode
class CustomOrder(CreatedUpdatedModel):
camp = models.ForeignKey(
'camps.Camp',
verbose_name=_('Camp'),
help_text=_('The camp this custom order is for.'),
)
text = models.TextField(
help_text=_('The invoice text')
)
customer = models.TextField(
help_text=_('The customer info for this order')
)
amount = models.IntegerField(
help_text=_('Amount of this custom order (in DKK, including VAT).')
)
paid = models.BooleanField(
verbose_name=_('Paid?'),
help_text=_('Whether this custom order has been paid.'),
default=False,
)
def __unicode__(self):
return 'custom order id #%s' % self.pk
@property
def vat(self):
return Decimal(self.amount*Decimal(0.2))
class Order(CreatedUpdatedModel):
class Meta:
unique_together = ('user', 'open')
ordering = ['-created']
products = models.ManyToManyField(
'shop.Product',
through='shop.OrderProductRelation'
)
user = models.ForeignKey(
'auth.User',
verbose_name=_('User'),
help_text=_('The user this shop order belongs to.'),
related_name='orders',
)
paid = models.BooleanField(
verbose_name=_('Paid?'),
help_text=_('Whether this shop order has been paid.'),
default=False,
)
open = models.NullBooleanField(
verbose_name=_('Open?'),
help_text=_('Whether this shop order is open or not. "None" means closed.'),
default=True,
)
camp = models.ForeignKey(
'camps.Camp',
verbose_name=_('Camp'),
help_text=_('The camp this shop order is for.'),
)
CREDIT_CARD = 'credit_card'
BLOCKCHAIN = 'blockchain'
BANK_TRANSFER = 'bank_transfer'
PAYMENT_METHODS = [
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,
choices=PAYMENT_METHOD_CHOICES,
default='',
)
cancelled = models.BooleanField(default=False)
refunded = models.BooleanField(
verbose_name=_('Refunded?'),
help_text=_('Whether this order has been refunded.'),
default=False,
)
objects = OrderQuerySet.as_manager()
def __unicode__(self):
return 'shop order id #%s' % self.pk
def get_number_of_items(self):
return self.products.aggregate(
sum=Sum('orderproductrelation__quantity')
)['sum']
@property
def vat(self):
return Decimal(self.total*Decimal(0.2))
@property
def total(self):
if self.products.all():
return Decimal(self.products.aggregate(
sum=Sum(
models.F('orderproductrelation__product__price') *
models.F('orderproductrelation__quantity'),
output_field=models.IntegerField()
)
)['sum'])
else:
return False
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}))
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}))
def get_epay_callback_url(self, request):
return 'https://' + request.get_host() + str(reverse_lazy('shop:epay_callback', kwargs={'pk': self.pk}))
@property
def description(self):
return "BornHack %s order #%s" % (self.camp.start.year, self.pk)
def get_absolute_url(self):
return str(reverse_lazy('shop:order_detail', kwargs={'pk': self.pk}))
def mark_as_paid(self):
self.paid = True
self.open = None
for order_product in self.orderproductrelation_set.all():
category_pk = str(order_product.product.category.pk)
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()
def mark_as_refunded(self, request):
if not self.paid:
messages.error(request, "Order %s is not paid, so cannot mark it as refunded!" % self.pk)
else:
self.refunded=True
### delete any tickets related to this order
if self.tickets.all():
messages.success(request, "Order %s marked as refunded, deleting %s tickets..." % (self.pk, self.tickets.count()))
self.tickets.all().delete()
else:
messages.success(request, "Order %s marked as refunded, no tickets to delete" % self.pk)
self.save()
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
def mark_as_cancelled(self):
self.cancelled = True
self.open = None
self.save()
class ProductCategory(CreatedUpdatedModel, UUIDModel):
class Meta:
verbose_name = 'Product category'
verbose_name_plural = 'Product categories'
name = models.CharField(max_length=150)
slug = models.SlugField()
public = models.BooleanField(default=True)
def __unicode__(self):
return self.name
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'
ordering = ['available_in', 'price', 'name']
category = models.ForeignKey(
'shop.ProductCategory',
related_name='products'
)
name = models.CharField(max_length=150)
slug = models.SlugField()
price = models.IntegerField(
help_text=_('Price of the product (in DKK, including VAT).')
)
description = models.TextField()
available_in = DateTimeRangeField(
help_text=_(
'Which period is this product available for purchase? | '
'(Format: YYYY-MM-DD HH:MM) | Only one of start/end is required'
)
)
objects = ProductQuerySet.as_manager()
def __unicode__(self):
return '{} ({} DKK)'.format(
self.name,
self.price,
)
def is_available(self):
now = timezone.now()
return now in self.available_in
def is_old(self):
now = timezone.now()
if hasattr(self.available_in, 'upper') and self.available_in.upper:
return self.available_in.upper < now
return False
def is_upcoming(self):
now = timezone.now()
return self.available_in.lower > now
class OrderProductRelation(CreatedUpdatedModel):
order = models.ForeignKey('shop.Order')
product = models.ForeignKey('shop.Product')
quantity = models.PositiveIntegerField()
handed_out = models.BooleanField(default=False)
@property
def total(self):
return Decimal(self.product.price * self.quantity)
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 __unicode__(self):
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()
class CreditNote(CreatedUpdatedModel):
class Meta:
ordering = ['-created']
amount = models.DecimalField(max_digits=10, decimal_places=2)
text = models.TextField()
pdf = models.FileField(
null=True,
blank=True,
upload_to='creditnotes/'
)
user = models.ForeignKey(
'auth.User',
verbose_name=_('User'),
help_text=_('The user this credit note belongs to.'),
related_name='creditnotes',
)
paid = models.BooleanField(
verbose_name=_('Paid?'),
help_text=_('Whether the amount in this creditnote has been paid back to the customer.'),
default=False,
)
sent_to_customer = models.BooleanField(default=False)
def __unicode__(self):
return 'creditnote#%s - %s DKK (sent to %s: %s)' % (
self.id,
self.amount,
self.user.email,
self.sent_to_customer,
)
@property
def vat(self):
return Decimal(self.amount*Decimal(0.2))
@property
def filename(self):
return 'bornhack_creditnote_%s.pdf' % self.pk
class Invoice(CreatedUpdatedModel):
order = models.OneToOneField('shop.Order', null=True, blank=True)
customorder = models.OneToOneField('shop.CustomOrder', null=True, blank=True)
pdf = models.FileField(null=True, blank=True, upload_to='invoices/')
sent_to_customer = models.BooleanField(default=False)
def __unicode__(self):
if self.order:
return 'invoice#%s - shop order %s - %s - total %s DKK (sent to %s: %s)' % (
self.id,
self.order.id,
self.order.created,
self.order.total,
self.order.user.email,
self.sent_to_customer,
)
elif self.customorder:
return 'invoice#%s - custom order %s - %s - amount %s DKK (customer: %s)' % (
self.id,
self.customorder.id,
self.customorder.created,
self.customorder.amount,
unidecode(self.customorder.customer),
)
@property
def filename(self):
return 'bornhack_invoice_%s.pdf' % self.pk
def regretdate(self):
return self.created+timedelta(days=15)
class CoinifyAPIInvoice(CreatedUpdatedModel):
invoicejson = JSONField()
order = models.OneToOneField('shop.Order')
def __unicode__(self):
return "coinifyinvoice for order #%s" % self.order.id
class CoinifyAPICallback(CreatedUpdatedModel):
headers = JSONField()
payload = JSONField()
order = models.ForeignKey('shop.Order')
valid = models.BooleanField(default=False)
def __unicode__(self):
return 'order #%s callback at %s' % (self.order.id, self.created)
class Ticket(CreatedUpdatedModel, UUIDModel):
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.'
),
null=True,
blank=True,
)
email = models.EmailField(
null=True,
blank=True,
)
checked_in = models.BooleanField(default=False)
def __unicode__(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):
qr = qrcode.make(
self.get_token(),
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_H
).resize((250,250))
file_like = io.BytesIO()
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)
def get_absolute_url(self):
return str(reverse_lazy('shop:ticket_detail', kwargs={'pk': self.pk}))