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# Copyright (C) 2017 Alban Gruin
#
# celcatsanitizer is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# celcatsanitizer 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with celcatsanitizer. If not, see <http://www.gnu.org/licenses/>.
from functools import reduce
from django.db import models
from django.db.models import Manager, Q
from django.db.models.functions import ExtractWeek, ExtractYear
from django.utils import timezone
from django.utils.text import slugify
from .utils import parse_group
class SlugModel(models.Model):
def save(self):
if not self.slug:
self.slug = slugify(self.name)
super(SlugModel, self).save()
class Meta:
abstract = True
class Year(SlugModel):
name = models.CharField(max_length=16, verbose_name="année")
slug = models.SlugField(max_length=16, unique=True, default="")
def __str__(self):
return self.name
class Meta:
verbose_name = "année"
verbose_name_plural = "années"
class Source(models.Model):
url = models.URLField(max_length=255, verbose_name="URL", unique=True)
last_update_date = models.DateTimeField(verbose_name="dernière mise à jour Celcat",
null=True, blank=True)
def __str__(self):
return self.url
class Meta:
verbose_name = "source d’emploi du temps"
verbose_name_plural = "sources d’emploi du temps"
class Timetable(SlugModel):
year = models.ForeignKey(Year, on_delete=models.CASCADE,
verbose_name="année")
name = models.CharField(max_length=64, verbose_name="nom")
slug = models.SlugField(max_length=64, default="")
source = models.ForeignKey(Source, on_delete=models.CASCADE,
verbose_name="source", related_name="timetables")
def __str__(self):
return self.year.name + " " + self.name
class Meta:
unique_together = (("year", "name"), ("year", "slug"),)
verbose_name = "emploi du temps"
verbose_name_plural = "emplois du temps"
class GroupManager(Manager):
def get_parents(self, group):
groups_criteria = Q(subgroup="")
if len(group.subgroup) != 0:
groups_criteria |= reduce(lambda x, y: x | y,
[Q(subgroup=group.subgroup[:i])
for i in range(1, len(group.subgroup) + 1)])
return self.get_queryset().filter(groups_criteria,
Q(semester=None) | Q(semester=group.semester),
mention=group.mention,
source=group.source)
class Group(SlugModel):
objects = GroupManager()
name = models.CharField(max_length=255, verbose_name="nom")
celcat_name = models.CharField(max_length=255,
verbose_name="nom dans Celcat")
source = models.ForeignKey(Source, on_delete=models.CASCADE,
verbose_name="source d’emploi du temps")
mention = models.CharField(max_length=128)
semester = models.IntegerField(verbose_name="semestre", null=True)
subgroup = models.CharField(max_length=16, verbose_name="sous-groupe", default="")
slug = models.SlugField(max_length=64, default="")
hidden = models.BooleanField(verbose_name="caché", default=False)
def corresponds_to(self, mention, semester, subgroup):
subgroup_corresponds = True
if self.subgroup is not None and subgroup is not None:
subgroup_corresponds = self.subgroup.startswith(subgroup)
return (self.mention.startswith(mention) or \
mention.startswith(self.mention)) and \
(self.semester == semester or semester is None) and \
subgroup_corresponds
@property
def group_info(self):
return self.mention, self.semester, self.subgroup
def __str__(self):
return self.name
def save(self, *args, **kwargs):
if self.name == "":
self.name = self.celcat_name
self.mention, self.semester, self.subgroup = parse_group(self.name)
if self.subgroup is None:
self.subgroup = ""
super(Group, self).save()
class Meta:
index_together = ("mention", "semester", "subgroup",)
unique_together = (("name", "source",),
("celcat_name", "source",),
("slug", "source",),)
verbose_name = "groupe"
verbose_name_plural = "groupes"
class Room(SlugModel):
name = models.CharField(max_length=255, unique=True, verbose_name="nom")
slug = models.SlugField(max_length=64, default="", unique=True)
def __str__(self):
return self.name
class Meta:
verbose_name = "salle"
verbose_name_plural = "salles"
class CourseManager(Manager):
def get_courses(self, obj, **criteria):
qs = self.get_queryset()
if isinstance(obj, Group):
qs = qs.filter(groups__in=Group.objects.get_parents(obj), **criteria) \
.prefetch_related("rooms")
elif isinstance(obj, Room):
qs = qs.filter(rooms__in=(obj,), **criteria)
return qs.order_by("begin")
def get_weeks(self, **criteria):
return self.get_queryset() \
.filter(**criteria) \
.order_by("groups__name", "year", "week") \
.annotate(year=ExtractYear("begin"),
week=ExtractWeek("begin")) \
.values("groups__mention", "groups__semester",
"groups__subgroup", "year", "week")
class Course(models.Model):
objects = CourseManager()
name = models.CharField(max_length=255, verbose_name="nom", default="Sans nom")
type_ = models.CharField(name="type", max_length=255,
verbose_name="type de cours", null=True)
source = models.ForeignKey(Source, on_delete=models.CASCADE,
verbose_name="emploi du temps")
notes = models.TextField(verbose_name="remarques", blank=True, null=True)
groups = models.ManyToManyField(Group, verbose_name="groupes")
rooms = models.ManyToManyField(Room, verbose_name="salles")
begin = models.DateTimeField(verbose_name="début du cours", db_index=True)
end = models.DateTimeField(verbose_name="fin du cours")
last_update = models.DateTimeField(verbose_name="dernière mise à jour",
default=timezone.now)
def __str__(self):
return self.name
def save(self, *args, **kwargs):
if self.type is not None:
self.type = self.type.replace("COURS", "cours")
self.type = self.type.replace("REUNION", "réunion")
if self.name is not None:
self.name = self.name.split("(")[0].strip()
super(Course, self).save(*args, **kwargs)
class Meta:
verbose_name = "cours"
verbose_name_plural = "cours"
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