Sith/subscription/models.py
2022-12-12 22:56:06 +01:00

173 lines
6.0 KiB
Python

# -*- coding:utf-8 -*
#
# Copyright 2016,2017
# - Skia <skia@libskia.so>
#
# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
# http://ae.utbm.fr.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License a published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
from datetime import date, timedelta
from django.db import models
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from django.conf import settings
from django.core.exceptions import ValidationError
from django.urls import reverse
from django.contrib.auth.forms import PasswordResetForm
from dateutil.relativedelta import relativedelta
import math
from core.models import User
from core.utils import get_start_of_semester
def validate_type(value):
if value not in settings.SITH_SUBSCRIPTIONS.keys():
raise ValidationError(_("Bad subscription type"))
def validate_payment(value):
if value not in settings.SITH_SUBSCRIPTION_PAYMENT_METHOD:
raise ValidationError(_("Bad payment method"))
class Subscription(models.Model):
member = models.ForeignKey(
User, related_name="subscriptions", on_delete=models.CASCADE
)
subscription_type = models.CharField(
_("subscription type"),
max_length=255,
choices=(
(k, v["name"]) for k, v in sorted(settings.SITH_SUBSCRIPTIONS.items())
),
)
subscription_start = models.DateField(_("subscription start"))
subscription_end = models.DateField(_("subscription end"))
payment_method = models.CharField(
_("payment method"),
max_length=255,
choices=settings.SITH_SUBSCRIPTION_PAYMENT_METHOD,
)
location = models.CharField(
choices=settings.SITH_SUBSCRIPTION_LOCATIONS,
max_length=20,
verbose_name=_("location"),
)
class Meta:
ordering = ["subscription_start"]
def clean(self):
try:
for s in (
Subscription.objects.filter(member=self.member)
.exclude(pk=self.pk)
.all()
):
if (
s.is_valid_now()
and s.subscription_end
- timedelta(weeks=settings.SITH_SUBSCRIPTION_END)
> date.today()
):
raise ValidationError(
_("You can not subscribe many time for the same period")
)
except: # This should not happen, because the form should have handled the data before, but sadly, it still
# calls the model validation :'(
# TODO see SubscriptionForm's clean method
raise ValidationError(_("Subscription error"))
def save(self, *args, **kwargs):
super(Subscription, self).save()
from counter.models import Customer
if not Customer.objects.filter(user=self.member).exists():
Customer.new_for_user(self.member).save()
form = PasswordResetForm({"email": self.member.email})
if form.is_valid():
form.save(
use_https=True,
email_template_name="core/new_user_email.jinja",
subject_template_name="core/new_user_email_subject.jinja",
from_email="ae@utbm.fr",
)
self.member.make_home()
def get_absolute_url(self):
return reverse("core:user_edit", kwargs={"user_id": self.member.pk})
def __str__(self):
if hasattr(self, "member") and self.member is not None:
return self.member.username + " - " + str(self.pk)
else:
return "No user - " + str(self.pk)
@staticmethod
def compute_start(d=None, duration=1, user=None):
"""
This function computes the start date of the subscription with respect to the given date (default is today),
and the start date given in settings.SITH_START_DATE.
It takes the nearest past start date.
Exemples: with SITH_START_DATE = (8, 15)
Today -> Start date
2015-03-17 -> 2015-02-15
2015-01-11 -> 2014-08-15
"""
if not d:
d = date.today()
if user is not None and user.subscriptions.exists():
last = user.subscriptions.last()
if last.is_valid_now():
d = last.subscription_end
if duration <= 2: # Sliding subscriptions for 1 or 2 semesters
return d
return get_start_of_semester(d)
@staticmethod
def compute_end(duration, start=None, user=None):
"""
This function compute the end date of the subscription given a start date and a duration in number of semestre
Exemple:
Start - Duration -> End date
2015-09-18 - 1 -> 2016-03-18
2015-09-18 - 2 -> 2016-09-18
2015-09-18 - 3 -> 2017-03-18
2015-09-18 - 4 -> 2017-09-18
"""
if start is None:
start = Subscription.compute_start(duration=duration, user=user)
return start + relativedelta(
months=round(6 * duration),
days=math.ceil((6 * duration - round(6 * duration)) * 30),
)
def can_be_edited_by(self, user):
return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or user.is_root
def is_valid_now(self):
return (
self.subscription_start <= date.today()
and date.today() <= self.subscription_end
)