mirror of
https://github.com/ae-utbm/sith.git
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279 lines
10 KiB
Python
279 lines
10 KiB
Python
from django.db import models, DataError
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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.conf import settings
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from django.core.urlresolvers import reverse
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from django.forms import ValidationError
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from datetime import timedelta
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import random
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import string
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from club.models import Club
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from accounting.models import CurrencyField
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from core.models import Group, User
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from subscription.models import Subscriber
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from subscription.views import get_subscriber
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class Customer(models.Model):
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"""
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This class extends a user to make a customer. It adds some basic customers informations, such as the accound ID, and
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is used by other accounting classes as reference to the customer, rather than using User
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"""
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user = models.OneToOneField(User, primary_key=True)
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account_id = models.CharField(_('account id'), max_length=10, unique=True)
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amount = CurrencyField(_('amount'))
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class Meta:
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verbose_name = _('customer')
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verbose_name_plural = _('customers')
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ordering = ['account_id',]
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def __str__(self):
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return self.user.username
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def generate_account_id(number):
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number = str(number)
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letter = random.choice(string.ascii_lowercase)
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while Customer.objects.filter(account_id=number+letter).exists():
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letter = random.choice(string.ascii_lowercase)
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return number+letter
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def save(self, *args, **kwargs):
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if self.amount < 0:
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raise ValidationError(_("Not enough money"))
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super(Customer, self).save(*args, **kwargs)
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class ProductType(models.Model):
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"""
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This describes a product type
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Useful only for categorizing, changes are made at the product level for now
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"""
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name = models.CharField(_('name'), max_length=30)
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description = models.TextField(_('description'), null=True, blank=True)
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icon = models.ImageField(upload_to='products', null=True, blank=True)
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class Meta:
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verbose_name = _('product type')
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def is_owned_by(self, user):
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"""
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Method to see if that object can be edited by the given user
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"""
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if user.is_in_group(settings.SITH_GROUPS['accounting-admin']['name']):
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return True
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return False
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def __str__(self):
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return self.name
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def get_absolute_url(self):
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return reverse('counter:producttype_list')
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class Product(models.Model):
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"""
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This describes a product, with all its related informations
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"""
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name = models.CharField(_('name'), max_length=30)
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description = models.TextField(_('description'), blank=True)
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product_type = models.ForeignKey(ProductType, related_name='products', null=True, blank=True)
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code = models.CharField(_('code'), max_length=10)
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purchase_price = CurrencyField(_('purchase price'))
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selling_price = CurrencyField(_('selling price'))
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special_selling_price = CurrencyField(_('special selling price'))
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icon = models.ImageField(upload_to='products', null=True, blank=True)
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club = models.ForeignKey(Club, related_name="products")
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class Meta:
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verbose_name = _('product')
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def is_owned_by(self, user):
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"""
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Method to see if that object can be edited by the given user
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"""
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if user.is_in_group(settings.SITH_GROUPS['accounting-admin']['name']):
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return True
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return False
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def __str__(self):
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return self.name
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def get_absolute_url(self):
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return reverse('counter:product_list')
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class Counter(models.Model):
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name = models.CharField(_('name'), max_length=30)
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club = models.ForeignKey(Club, related_name="counters")
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products = models.ManyToManyField(Product, related_name="counters", blank=True)
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type = models.CharField(_('subscription type'),
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max_length=255,
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choices=[('BAR',_('Bar')), ('OFFICE',_('Office')), ('EBOUTIC',_('Eboutic'))])
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sellers = models.ManyToManyField(Subscriber, verbose_name=_('sellers'), related_name='counters', blank=True)
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edit_groups = models.ManyToManyField(Group, related_name="editable_counters", blank=True)
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view_groups = models.ManyToManyField(Group, related_name="viewable_counters", blank=True)
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barmen_session = {}
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class Meta:
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verbose_name = _('counter')
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def __getattribute__(self, name):
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if name == "edit_groups":
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return Group.objects.filter(name=self.club.unix_name+settings.SITH_BOARD_SUFFIX).all()
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return object.__getattribute__(self, name)
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def __str__(self):
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return self.name
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def get_absolute_url(self):
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if self.type == "EBOUTIC":
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return reverse('eboutic:main')
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return reverse('counter:details', kwargs={'counter_id': self.id})
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def is_owned_by(self, user):
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return user.is_in_group(settings.SITH_GROUPS['counter-admin']['name'])
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def can_be_viewed_by(self, user):
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if self.type == "BAR" or self.type == "EBOUTIC":
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return True
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sub = get_subscriber(request.user)
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return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or sub in self.sellers
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def add_barman(counter_id, user_id):
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"""
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Logs a barman in to the given counter
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A user is stored as a tuple with its login time
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"""
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counter_id = int(counter_id)
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user_id = int(user_id)
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if counter_id not in Counter.barmen_session.keys():
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Counter.barmen_session[counter_id] = {'users': {(user_id, timezone.now())}, 'time': timezone.now()}
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else:
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Counter.barmen_session[counter_id]['users'].add((user_id, timezone.now()))
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def del_barman(counter_id, user_id):
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"""
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Logs a barman out and store its permanency
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"""
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counter_id = int(counter_id)
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user_id = int(user_id)
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user_tuple = None
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for t in Counter.barmen_session[counter_id]['users']:
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if t[0] == user_id: user_tuple = t
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Counter.barmen_session[counter_id]['users'].remove(user_tuple)
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u = User.objects.filter(id=user_id).first()
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c = Counter.objects.filter(id=counter_id).first()
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Permanency(user=u, counter=c, start=user_tuple[1], end=Counter.barmen_session[counter_id]['time']).save()
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def get_barmen_list(self):
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"""
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Returns the barman list as list of User
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Also handle the timeout of the barmen
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"""
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bl = []
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counter_id = self.id
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if counter_id in list(Counter.barmen_session.keys()):
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for b in Counter.barmen_session[counter_id]['users']:
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# Reminder: user is stored as a tuple with its login time
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bl.append(User.objects.filter(id=b[0]).first())
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if (timezone.now() - Counter.barmen_session[counter_id]['time']) < timedelta(minutes=settings.SITH_BARMAN_TIMEOUT):
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Counter.barmen_session[counter_id]['time'] = timezone.now()
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else:
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for b in bl:
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Counter.del_barman(counter_id, b.id)
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bl = []
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Counter.barmen_session[counter_id]['users'] = set()
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return bl
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def get_random_barman(self):
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bl = self.get_barmen_list()
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return bl[randrange(0, len(bl))]
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def is_open(self):
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response = False
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if len(self.get_barmen_list()) > 0:
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response = True
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return response
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def barman_list(self):
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return [b.id for b in self.get_barmen_list()]
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class Refilling(models.Model):
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"""
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Handle the refilling
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"""
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counter = models.ForeignKey(Counter, related_name="refillings", blank=False)
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amount = CurrencyField(_('amount'))
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operator = models.ForeignKey(User, related_name="refillings_as_operator", blank=False)
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customer = models.ForeignKey(Customer, related_name="refillings", blank=False)
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date = models.DateTimeField(_('date'), auto_now=True)
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payment_method = models.CharField(_('payment method'), max_length=255,
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choices=settings.SITH_COUNTER_PAYMENT_METHOD, default='cash')
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bank = models.CharField(_('bank'), max_length=255,
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choices=settings.SITH_COUNTER_BANK, default='other')
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is_validated = models.BooleanField(_('is validated'), default=False)
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class Meta:
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verbose_name = _("refilling")
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def __str__(self):
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return "Refilling: %.2f for %s" % (self.amount, self.customer.user.get_display_name())
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# def get_absolute_url(self):
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# return reverse('counter:details', kwargs={'counter_id': self.id})
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def save(self, *args, **kwargs):
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self.full_clean()
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if not self.is_validated:
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self.customer.amount += self.amount
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self.customer.save()
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self.is_validated = True
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super(Refilling, self).save(*args, **kwargs)
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class Selling(models.Model):
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"""
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Handle the sellings
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"""
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label = models.CharField(_("label"), max_length=30)
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product = models.ForeignKey(Product, related_name="sellings", null=True, blank=True)
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counter = models.ForeignKey(Counter, related_name="sellings", blank=False)
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unit_price = CurrencyField(_('unit price'))
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quantity = models.IntegerField(_('quantity'))
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seller = models.ForeignKey(User, related_name="sellings_as_operator", blank=False)
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customer = models.ForeignKey(Customer, related_name="buyings", blank=False)
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date = models.DateTimeField(_('date'), auto_now=True)
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is_validated = models.BooleanField(_('is validated'), default=False)
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class Meta:
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verbose_name = _("selling")
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def __str__(self):
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return "Selling: %d x %s (%f) for %s" % (self.quantity, self.label,
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self.quantity*self.unit_price, self.customer.user.get_display_name())
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def save(self, *args, **kwargs):
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self.full_clean()
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if not self.is_validated:
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self.customer.amount -= self.quantity * self.unit_price
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self.customer.save()
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self.is_validated = True
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super(Selling, self).save(*args, **kwargs)
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class Permanency(models.Model):
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"""
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This class aims at storing a traceability of who was barman where and when
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"""
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user = models.ForeignKey(User, related_name="permanencies")
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counter = models.ForeignKey(Counter, related_name="permanencies")
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start = models.DateTimeField(_('start date'))
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end = models.DateTimeField(_('end date'))
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class Meta:
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verbose_name = _("permanency")
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def __str__(self):
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return "%s in %s from %s to %s" % (self.user, self.counter,
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self.start.strftime("%Y-%m-%d %H:%M:%S"), self.end.strftime("%Y-%m-%d %H:%M:%S"))
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