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 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 import hashlib, io, base64, qrcode from decimal import Decimal from datetime import timedelta 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 order belongs to.'), related_name='orders', ) paid = models.BooleanField( verbose_name=_('Paid?'), help_text=_('Whether this order has been paid.'), default=False, ) open = models.NullBooleanField( verbose_name=_('Open?'), help_text=_('Whether this order is open or not. "None" means closed.'), default=True, ) 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 = [ 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=BLOCKCHAIN ) 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): return Decimal(self.total*Decimal(0.2)) @property def total(self): return Decimal(self.products.aggregate( sum=Sum( models.F('orderproductrelation__product__price') * models.F('orderproductrelation__quantity'), output_field=models.IntegerField() ) )['sum']) 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 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() 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) slug = models.SlugField() public = models.BooleanField(default=True) def __str__(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'] 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).') ) 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 __str__(self): 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) @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 __str__(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 Invoice(CreatedUpdatedModel): order = models.OneToOneField('shop.Order') pdf = models.FileField(null=True, blank=True, upload_to='invoices/') 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 def regretdate(self): return self.created+timedelta(days=15) class CoinifyAPIInvoice(CreatedUpdatedModel): invoicejson = JSONField() order = models.OneToOneField('shop.Order') class CoinifyAPICallback(CreatedUpdatedModel): headers = JSONField() payload = JSONField() order = models.ForeignKey('shop.Order') valid = models.BooleanField(default=False) def __str__(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, ) 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): 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}))