bornhack-website/src/tickets/models.py

153 lines
3.8 KiB
Python

import io
import logging
import hashlib
import base64
import qrcode
from django.conf import settings
from django.utils import timezone
from django.dispatch import receiver
from django.core.urlresolvers import reverse_lazy
from django.utils.translation import ugettext_lazy as _
from utils.models import (
UUIDModel,
CampRelatedModel,
CreatedUpdatedModel
)
from utils.pdf import generate_pdf_letter
from django.db import models
from django.db.models.signals import post_save
from datetime import (
timedelta,
datetime
)
from django.db.models import Count
from ircbot.models import OutgoingIrcMessage
logger = logging.getLogger("bornhack.%s" % __name__)
# TicketType can be full week, one day. etc.
class TicketType(CampRelatedModel, UUIDModel):
name = models.TextField()
camp = models.ForeignKey('camps.Camp')
def __str__(self):
return '{} ({})'.format(self.name, self.camp.title)
class BaseTicket(CampRelatedModel, UUIDModel):
ticket_type = models.ForeignKey('TicketType')
checked_in = models.BooleanField(default=False)
badge_handed_out = models.BooleanField(default=False)
class Meta:
abstract = True
@property
def camp(self):
return self.ticket_type.camp
def _get_token(self):
return hashlib.sha256(
'{_id}{secret_key}'.format(
_id=self.pk,
secret_key=settings.SECRET_KEY,
).encode('utf-8')
).hexdigest()
def get_qr_code_base64(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.get_qr_code_base64().decode('utf-8')
)
def generate_pdf(self):
return generate_pdf_letter(
filename='{}_ticket_{}.pdf'.format(self.shortname, self.pk),
formatdict={'ticket': self},
template='pdf/ticket.html'
)
class SponsorTicket(BaseTicket):
sponsor = models.ForeignKey('sponsors.Sponsor')
def __str__(self):
return 'SponsorTicket: {}'.format(self.pk)
@property
def shortname(self):
return "sponsor"
class DiscountTicket(BaseTicket):
price = models.IntegerField(
help_text=_('Price of the discounted ticket (in DKK, including VAT).')
)
def __str__(self):
return 'DiscountTicket: {}'.format(self.pk)
@property
def shortname(self):
return "discount"
class ShopTicket(BaseTicket):
order = models.ForeignKey('shop.Order', related_name='shoptickets')
product = models.ForeignKey('shop.Product')
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,
)
# overwrite the _get_token method because old tickets use the user_id
def _get_token(self):
return hashlib.sha256(
'{_id}{user_id}{secret_key}'.format(
_id=self.pk,
user_id=self.order.user.pk,
secret_key=settings.SECRET_KEY,
).encode('utf-8')
).hexdigest()
def __str__(self):
return 'Ticket {user} {product}'.format(
user=self.order.user,
product=self.product
)
def get_absolute_url(self):
return str(
reverse_lazy('tickets:shopticket_edit', kwargs={'pk': self.pk})
)
@property
def shortname(self):
return "shop"