Sith/counter/models.py

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from django.db import models, DataError
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from django.utils.translation import ugettext_lazy as _
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
import string
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from club.models import Club
from accounting.models import CurrencyField
from core.models import Group, User
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from subscription.models import Subscriber, Subscription
from subscription.views import get_subscriber
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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)
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amount = CurrencyField(_('amount'))
class Meta:
verbose_name = _('customer')
verbose_name_plural = _('customers')
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ordering = ['account_id',]
def __str__(self):
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return "%s - %s" % (self.user.username, self.account_id)
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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
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def save(self, *args, **kwargs):
if self.amount < 0:
raise ValidationError(_("Not enough money"))
super(Customer, self).save(*args, **kwargs)
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)
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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
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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)
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buying_groups = models.ManyToManyField(Group, related_name='products', verbose_name=_("buying groups"), blank=True)
archived = models.BooleanField(_("archived"), default=False)
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class Meta:
verbose_name = _('product')
def is_owned_by(self, user):
"""
Method to see if that object can be edited by the given user
"""
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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
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def get_absolute_url(self):
return reverse('counter:product_list')
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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'),
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max_length=255,
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choices=[('BAR',_('Bar')), ('OFFICE',_('Office')), ('EBOUTIC',_('Eboutic'))])
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)
view_groups = models.ManyToManyField(Group, related_name="viewable_counters", blank=True)
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class Meta:
verbose_name = _('counter')
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def __getattribute__(self, name):
if name == "edit_groups":
return Group.objects.filter(name=self.club.unix_name+settings.SITH_BOARD_SUFFIX).all()
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return object.__getattribute__(self, name)
def __str__(self):
return self.name
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def get_absolute_url(self):
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if self.type == "EBOUTIC":
return reverse('eboutic:main')
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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'])
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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 add_barman(self, user):
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"""
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):
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"""
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()
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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
"""
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):
p.save() # Update activity
bl.append(p.user)
else:
p.end = p.activity
p.save()
return bl
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def get_random_barman(self):
bl = self.get_barmen_list()
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return bl[random.randrange(0, len(bl))]
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def is_open(self):
return len(self.get_barmen_list()) > 0
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def barman_list(self):
return [b.id for b in self.get_barmen_list()]
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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'))
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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')
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is_validated = models.BooleanField(_('is validated'), default=False)
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class Meta:
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 is_owned_by(self, user):
return user.is_owner(self.counter) and self.payment_method != "CARD"
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def delete(self, *args, **kwargs):
self.customer.amount -= self.amount
self.customer.save()
super(Refilling, self).delete(*args, **kwargs)
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def save(self, *args, **kwargs):
if not self.date:
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self.date = timezone.now()
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self.full_clean()
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if not self.is_validated:
self.customer.amount += self.amount
self.customer.save()
self.is_validated = True
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super(Refilling, self).save(*args, **kwargs)
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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)
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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')
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is_validated = models.BooleanField(_('is validated'), default=False)
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class Meta:
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 is_owned_by(self, user):
return user.is_owner(self.counter) and self.payment_method != "CARD"
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def delete(self, *args, **kwargs):
self.customer.amount += self.quantity * self.unit_price
self.customer.save()
super(Selling, self).delete(*args, **kwargs)
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def save(self, *args, **kwargs):
if not self.date:
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self.date = timezone.now()
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self.full_clean()
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if not self.is_validated:
self.customer.amount -= self.quantity * self.unit_price
self.customer.save()
self.is_validated = True
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if 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.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()
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super(Selling, self).save(*args, **kwargs)
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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"))
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start = models.DateTimeField(_('start date'))
end = models.DateTimeField(_('end date'), null=True)
activity = models.DateTimeField(_('last activity date'), auto_now=True)
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class Meta:
verbose_name = _("permanency")
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def __str__(self):
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return "%s in %s from %s" % (self.user, self.counter,
self.start.strftime("%Y-%m-%d %H:%M:%S"))
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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 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)
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")