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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 django.core.exceptions import ObjectDoesNotExist
from django.contrib.syndication.views import Feed
from django.db.models import Q
from django.utils.feedgenerator import Atom1Feed, SyndicationFeed
from icalendar import Calendar, Event
from .models import Course, Group, LastUpdate, Timetable, Year
from .templatetags.rooms import format_rooms
from .utils import get_current_or_next_week
ICAL_NAMES = ["summary", "description", "location", "start", "dtstart", "dtend"]
class IcalFeedGenerator(SyndicationFeed):
content_type = "text/calendar; charset=utf-8"
def write(self, outfile, encoding):
calendar = Calendar()
calendar.add("version", "2.0")
self.write_events(calendar)
outfile.write(calendar.to_ical())
def write_events(self, calendar):
for item in self.items:
event = Event()
for key in ICAL_NAMES:
if item.get(key) is not None:
event.add(key, item[key])
calendar.add_component(event)
class IcalFeed(Feed):
feed_type = IcalFeedGenerator
link = ""
def get_object(self, request, year_slug, timetable_slug, group_slug):
try:
group = Group.objects.get(timetable__year__slug=year_slug, timetable__slug=timetable_slug, slug=group_slug)
except:
raise ObjectDoesNotExist
else:
return group
def item_description(self, item):
return item.notes
def item_link(self, item):
return ""
def items(self, obj):
return Course.objects.get_courses_for_group(obj).order_by("begin")
def item_extra_kwargs(self, item):
return {"dtstart": item.begin,
"dtend": item.end,
"summary": item.name,
"location": format_rooms(item.rooms.all())}
class AtomFeed(Feed):
feed_type = Atom1Feed
def get_object(self, request, year_slug, timetable_slug, group_slug):
year, week = get_current_or_next_week()
try:
group = Group.objects.get(timetable__year__slug=year_slug, timetable__slug=timetable_slug, slug=group_slug)
updates = LastUpdate.objects.filter(Q(year=year, week__lte=week) | Q(year__lt=year), timetable__year__slug=year_slug, timetable__slug=timetable_slug).order_by("-year", "-week")[:5]
except:
raise ObjectDoesNotExist
else:
return group, updates
def items(self, obj):
pass
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