from django.db import models, DataError from django.utils.translation import ugettext_lazy as _ from django.utils import timezone from django.conf import settings from django.core.urlresolvers import reverse from django.forms import ValidationError from datetime import timedelta import random import string import os import base64 from club.models import Club from accounting.models import CurrencyField from core.models import Group, User from subscription.models import Subscriber, Subscription from subscription.views import get_subscriber class Customer(models.Model): """ This class extends a user to make a customer. It adds some basic customers informations, such as the accound ID, and is used by other accounting classes as reference to the customer, rather than using User """ user = models.OneToOneField(User, primary_key=True) account_id = models.CharField(_('account id'), max_length=10, unique=True) amount = CurrencyField(_('amount')) class Meta: verbose_name = _('customer') verbose_name_plural = _('customers') ordering = ['account_id',] def __str__(self): return "%s - %s" % (self.user.username, self.account_id) def generate_account_id(number): number = str(number) letter = random.choice(string.ascii_lowercase) while Customer.objects.filter(account_id=number+letter).exists(): letter = random.choice(string.ascii_lowercase) return number+letter def save(self, *args, **kwargs): if self.amount < 0: raise ValidationError(_("Not enough money")) super(Customer, self).save(*args, **kwargs) def recompute_amount(self): self.amount = 0 for r in self.refillings.all(): self.amount += r.amount for s in self.buyings.filter(payment_method="SITH_ACCOUNT"): self.amount -= s.quantity * s.unit_price self.save() class ProductType(models.Model): """ This describes a product type Useful only for categorizing, changes are made at the product level for now """ name = models.CharField(_('name'), max_length=30) description = models.TextField(_('description'), null=True, blank=True) icon = models.ImageField(upload_to='products', null=True, blank=True) class Meta: verbose_name = _('product type') def is_owned_by(self, user): """ Method to see if that object can be edited by the given user """ if user.is_in_group(settings.SITH_GROUPS['accounting-admin']['name']): return True return False def __str__(self): return self.name def get_absolute_url(self): return reverse('counter:producttype_list') class Product(models.Model): """ This describes a product, with all its related informations """ name = models.CharField(_('name'), max_length=64) description = models.TextField(_('description'), blank=True) product_type = models.ForeignKey(ProductType, related_name='products', verbose_name=_("product type"), null=True, blank=True, on_delete=models.SET_NULL) code = models.CharField(_('code'), max_length=16, blank=True) purchase_price = CurrencyField(_('purchase price')) selling_price = CurrencyField(_('selling price')) special_selling_price = CurrencyField(_('special selling price')) icon = models.ImageField(upload_to='products', null=True, blank=True, verbose_name=_("icon")) club = models.ForeignKey(Club, related_name="products", verbose_name=_("club")) limit_age = models.IntegerField(_('limit age'), default=0) tray = models.BooleanField(_('tray price'), default=False) parent_product = models.ForeignKey('self', related_name='children_products', verbose_name=_("parent product"), null=True, blank=True, on_delete=models.SET_NULL) buying_groups = models.ManyToManyField(Group, related_name='products', verbose_name=_("buying groups"), blank=True) archived = models.BooleanField(_("archived"), default=False) class Meta: verbose_name = _('product') def is_owned_by(self, user): """ Method to see if that object can be edited by the given user """ if user.is_in_group(settings.SITH_GROUPS['accounting-admin']['name']) or user.is_in_group(settings.SITH_GROUPS['counter-admin']['name']): return True return False def __str__(self): return self.name def get_absolute_url(self): return reverse('counter:product_list') class Counter(models.Model): name = models.CharField(_('name'), max_length=30) club = models.ForeignKey(Club, related_name="counters", verbose_name=_("club")) products = models.ManyToManyField(Product, related_name="counters", verbose_name=_("products"), blank=True) type = models.CharField(_('counter type'), max_length=255, choices=[('BAR',_('Bar')), ('OFFICE',_('Office')), ('EBOUTIC',_('Eboutic'))]) sellers = models.ManyToManyField(Subscriber, verbose_name=_('sellers'), related_name='counters', blank=True) edit_groups = models.ManyToManyField(Group, related_name="editable_counters", blank=True) view_groups = models.ManyToManyField(Group, related_name="viewable_counters", blank=True) token = models.CharField(_('token'), max_length=30, null=True, blank=True) class Meta: verbose_name = _('counter') def __getattribute__(self, name): if name == "edit_groups": return Group.objects.filter(name=self.club.unix_name+settings.SITH_BOARD_SUFFIX).all() return object.__getattribute__(self, name) def __str__(self): return self.name def get_absolute_url(self): if self.type == "EBOUTIC": return reverse('eboutic:main') return reverse('counter:details', kwargs={'counter_id': self.id}) def is_owned_by(self, user): mem = self.club.get_membership_for(user) if mem and mem.role >= 7: return True return user.is_in_group(settings.SITH_GROUPS['counter-admin']['name']) def can_be_viewed_by(self, user): if self.type == "BAR" or self.type == "EBOUTIC": return True sub = get_subscriber(request.user) return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or sub in self.sellers def gen_token(self): """Generate a new token for this counter""" self.token = ''.join(random.choice(string.ascii_letters + string.digits) for x in range(30)) self.save() def add_barman(self, user): """ Logs a barman in to the given counter A user is stored as a tuple with its login time """ Permanency(user=user, counter=self, start=timezone.now(), end=None).save() def del_barman(self, user): """ Logs a barman out and store its permanency """ perm = Permanency.objects.filter(counter=self, user=user, end=None).all() for p in perm: p.end = p.activity p.save() def get_barmen_list(self): """ Returns the barman list as list of User Also handle the timeout of the barmen """ pl = Permanency.objects.filter(counter=self, end=None).all() bl = [] for p in pl: if timezone.now() - p.activity < timedelta(minutes=settings.SITH_BARMAN_TIMEOUT): bl.append(p.user) else: p.end = p.activity p.save() return bl def get_random_barman(self): """ Return a random user being currently a barman """ bl = self.get_barmen_list() return bl[random.randrange(0, len(bl))] def update_activity(self): """ Update the barman activity to prevent timeout """ for p in Permanency.objects.filter(counter=self, end=None).all(): p.save() # Update activity def is_open(self): return len(self.get_barmen_list()) > 0 def barman_list(self): """ Returns the barman id list """ return [b.id for b in self.get_barmen_list()] class Refilling(models.Model): """ Handle the refilling """ counter = models.ForeignKey(Counter, related_name="refillings", blank=False) amount = CurrencyField(_('amount')) operator = models.ForeignKey(User, related_name="refillings_as_operator", blank=False) customer = models.ForeignKey(Customer, related_name="refillings", blank=False) date = models.DateTimeField(_('date')) payment_method = models.CharField(_('payment method'), max_length=255, choices=settings.SITH_COUNTER_PAYMENT_METHOD, default='CASH') bank = models.CharField(_('bank'), max_length=255, choices=settings.SITH_COUNTER_BANK, default='OTHER') is_validated = models.BooleanField(_('is validated'), default=False) class Meta: verbose_name = _("refilling") def __str__(self): return "Refilling: %.2f for %s" % (self.amount, self.customer.user.get_display_name()) def is_owned_by(self, user): return user.is_owner(self.counter) and self.payment_method != "CARD" def delete(self, *args, **kwargs): self.customer.amount -= self.amount self.customer.save() super(Refilling, self).delete(*args, **kwargs) def save(self, *args, **kwargs): if not self.date: self.date = timezone.now() self.full_clean() if not self.is_validated: self.customer.amount += self.amount self.customer.save() self.is_validated = True super(Refilling, self).save(*args, **kwargs) class Selling(models.Model): """ Handle the sellings """ label = models.CharField(_("label"), max_length=64) product = models.ForeignKey(Product, related_name="sellings", null=True, blank=True, on_delete=models.SET_NULL) counter = models.ForeignKey(Counter, related_name="sellings", null=True, blank=False, on_delete=models.SET_NULL) club = models.ForeignKey(Club, related_name="sellings", null=True, blank=False, on_delete=models.SET_NULL) unit_price = CurrencyField(_('unit price')) quantity = models.IntegerField(_('quantity')) seller = models.ForeignKey(User, related_name="sellings_as_operator", null=True, blank=False, on_delete=models.SET_NULL) customer = models.ForeignKey(Customer, related_name="buyings", null=True, blank=False, on_delete=models.SET_NULL) date = models.DateTimeField(_('date')) payment_method = models.CharField(_('payment method'), max_length=255, choices=[('SITH_ACCOUNT', _('Sith account')), ('CARD', _('Credit card'))], default='SITH_ACCOUNT') is_validated = models.BooleanField(_('is validated'), default=False) class Meta: verbose_name = _("selling") def __str__(self): return "Selling: %d x %s (%f) for %s" % (self.quantity, self.label, self.quantity*self.unit_price, self.customer.user.get_display_name()) def is_owned_by(self, user): return user.is_owner(self.counter) and self.payment_method != "CARD" def can_be_viewed_by(self, user): return user == self.customer.user def delete(self, *args, **kwargs): self.customer.amount += self.quantity * self.unit_price self.customer.save() super(Selling, self).delete(*args, **kwargs) def save(self, *args, **kwargs): if not self.date: self.date = timezone.now() self.full_clean() if not self.is_validated: self.customer.amount -= self.quantity * self.unit_price self.customer.save() self.is_validated = True if self.product and self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_ONE_SEMESTER: s = Subscriber.objects.filter(id=self.customer.user.id).first() sub = Subscription( member=s, subscription_type='un-semestre', payment_method="EBOUTIC", location="EBOUTIC", ) sub.subscription_start = Subscription.compute_start() sub.subscription_start = Subscription.compute_start( duration=settings.SITH_SUBSCRIPTIONS[sub.subscription_type]['duration']) sub.subscription_end = Subscription.compute_end( duration=settings.SITH_SUBSCRIPTIONS[sub.subscription_type]['duration'], start=sub.subscription_start) sub.save() elif self.product and self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_TWO_SEMESTERS: s = Subscriber.objects.filter(id=self.customer.user.id).first() sub = Subscription( member=s, subscription_type='deux-semestres', payment_method="EBOUTIC", location="EBOUTIC", ) sub.subscription_start = Subscription.compute_start() sub.subscription_start = Subscription.compute_start( duration=settings.SITH_SUBSCRIPTIONS[sub.subscription_type]['duration']) sub.subscription_end = Subscription.compute_end( duration=settings.SITH_SUBSCRIPTIONS[sub.subscription_type]['duration'], start=sub.subscription_start) sub.save() super(Selling, self).save(*args, **kwargs) class Permanency(models.Model): """ This class aims at storing a traceability of who was barman where and when """ user = models.ForeignKey(User, related_name="permanencies", verbose_name=_("user")) counter = models.ForeignKey(Counter, related_name="permanencies", verbose_name=_("counter")) start = models.DateTimeField(_('start date')) end = models.DateTimeField(_('end date'), null=True) activity = models.DateTimeField(_('last activity date'), auto_now=True) class Meta: verbose_name = _("permanency") def __str__(self): return "%s in %s from %s (last activity: %s) to %s" % (self.user, self.counter, self.start.strftime("%Y-%m-%d %H:%M:%S"), self.activity.strftime("%Y-%m-%d %H:%M:%S"), self.end.strftime("%Y-%m-%d %H:%M:%S") if self.end else "", ) class CashRegisterSummary(models.Model): user = models.ForeignKey(User, related_name="cash_summaries", verbose_name=_("user")) counter = models.ForeignKey(Counter, related_name="cash_summaries", verbose_name=_("counter")) date = models.DateTimeField(_('date')) comment = models.TextField(_('comment'), null=True, blank=True) emptied = models.BooleanField(_('emptied'), default=False) class Meta: verbose_name = _("cash register summary") def __str__(self): return "At %s by %s - Total: %s €" % (self.counter, self.user, self.get_total()) def __getattribute__(self, name): if name[:5] == 'check': checks = self.items.filter(check=True).order_by('value').all() if name == 'ten_cents': return self.items.filter(value=0.1, check=False).first() elif name == 'twenty_cents': return self.items.filter(value=0.2, check=False).first() elif name == 'fifty_cents': return self.items.filter(value=0.5, check=False).first() elif name == 'one_euro': return self.items.filter(value=1, check=False).first() elif name == 'two_euros': return self.items.filter(value=2, check=False).first() elif name == 'five_euros': return self.items.filter(value=5, check=False).first() elif name == 'ten_euros': return self.items.filter(value=10, check=False).first() elif name == 'twenty_euros': return self.items.filter(value=20, check=False).first() elif name == 'fifty_euros': return self.items.filter(value=50, check=False).first() elif name == 'hundred_euros': return self.items.filter(value=100, check=False).first() elif name == 'check_1': return checks[0] if 0 < len(checks) else None elif name == 'check_2': return checks[1] if 1 < len(checks) else None elif name == 'check_3': return checks[2] if 2 < len(checks) else None elif name == 'check_4': return checks[3] if 3 < len(checks) else None elif name == 'check_5': return checks[4] if 4 < len(checks) else None else: return object.__getattribute__(self, name) def is_owned_by(self, user): """ Method to see if that object can be edited by the given user """ if user.is_in_group(settings.SITH_GROUPS['counter-admin']['name']): return True return False def get_total(self): t = 0 for it in self.items.all(): t += it.quantity * it.value return t def save(self, *args, **kwargs): if not self.id: self.date = timezone.now() return super(CashRegisterSummary, self).save(*args, **kwargs) def get_absolute_url(self): return reverse('counter:cash_summary_list') class CashRegisterSummaryItem(models.Model): cash_summary = models.ForeignKey(CashRegisterSummary, related_name="items", verbose_name=_("cash summary")) value = CurrencyField(_("value")) quantity = models.IntegerField(_('quantity'), default=0) check = models.BooleanField(_('check'), default=False) class Meta: verbose_name = _("cash register summary item") class Eticket(models.Model): """ Eticket can be linked to a product an allows PDF generation """ product = models.OneToOneField(Product, related_name='eticket', verbose_name=_("product")) banner = models.ImageField(upload_to='etickets', null=True, blank=True, verbose_name=_("banner")) event_date = models.DateField(_('event date'), null=True, blank=True) event_title = models.CharField(_('event title'), max_length=64, null=True, blank=True) secret = models.CharField(_('secret'), max_length=64, unique=True) def __str__(self): return "%s" % (self.product.name) def get_absolute_url(self): return reverse('counter:eticket_list') def save(self, *args, **kwargs): if not self.id: self.secret = base64.b64encode(os.urandom(32)) return super(Eticket, self).save(*args, **kwargs) def is_owned_by(self, user): """ Method to see if that object can be edited by the given user """ return user.is_in_group(settings.SITH_GROUPS['counter-admin']['name']) def get_hash(self, string): import hashlib, hmac return hmac.new(bytes(self.secret, 'utf-8'), bytes(string, 'utf-8'), hashlib.sha1).hexdigest()