#    Copyright (C) 2017  Alban Gruin
#
#    celcatsanitizer is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 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 General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with celcatsanitizer; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

from django.core.management.base import BaseCommand
from django.db import transaction
from edt.models import Course, CourseDelta, Group, LastUpdate


class Command(BaseCommand):
    help = "Remove all courses and groups from the database"

    def add_arguments(self, parser):
        parser.add_argument("--timetable", type=int, nargs="+")

    def handle(self, *args, **options):
        with transaction.atomic():
            if options["timetable"] is None:
                CourseDelta.objects.all().delete()
                Course.objects.all().delete()
                Group.objects.all().delete()
                LastUpdate.objects.all().delete()
            else:
                CourseDelta.objects.filter(course__timetable__id__in=options["timetable"]).delete()
                Course.objects.filter(timetable__id__in=options["timetable"]).delete()
                Group.objects.filter(timetable__id__in=options["timetable"]).delete()
                LastUpdate.objects.filter(timetable__id__in=options["timetable"]).delete()

        self.stdout.write(self.style.SUCCESS("Done."))