# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2017-2019 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later

from django.contrib import messages
from django.contrib.auth.decorators import login_required, permission_required
from django.contrib.auth.mixins import LoginRequiredMixin
from django_filters.rest_framework import DjangoFilterBackend
from django.db import transaction
from django.shortcuts import redirect, render
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from django.views.generic import TemplateView
from rest_framework import viewsets
from rest_framework.filters import SearchFilter
from reversion import revisions as reversion

from .models import Auteur, BD, CD, Emprunt, FutureMedia, Jeu, Manga, Revue, Roman, Vinyle
from .serializers import AuteurSerializer, BDSerializer, CDSerializer, EmpruntSerializer, FutureMediaSerializer, \
    JeuSerializer, MangaSerializer, RevueSerializer, RomanSerializer, VinyleSerializer


@login_required
@permission_required('media.change_emprunt')
def retour_emprunt(request, empruntid):
    try:
        emprunt_instance = Emprunt.objects.get(pk=empruntid)
    except Emprunt.DoesNotExist:
        messages.error(request, u"Entrée inexistante")
        return redirect("admin:media_emprunt_changelist")
    with transaction.atomic(), reversion.create_revision():
        emprunt_instance.permanencier_rendu = request.user
        emprunt_instance.date_rendu = timezone.now()
        emprunt_instance.save()
        reversion.set_user(request.user)
        messages.success(request, "Retour enregistré")
    return redirect("admin:media_emprunt_changelist")


def index(request):
    """
    Home page which redirect to admin when logged in
    """
    if request.user.is_authenticated:
        return redirect('admin:index')
    else:
        return render(request, 'admin/index.html', {
            'title': _('Welcome to the Mediatek database'),
        })


class FindMediumView(LoginRequiredMixin, TemplateView):
    template_name = "media/find_medium.html"


class AuteurViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows authors to be viewed or edited.
    """
    queryset = Auteur.objects.all()
    serializer_class = AuteurSerializer


class BDViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = BD.objects.all()
    serializer_class = BDSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["isbn", "side_identifier"]
    search_fields = ["isbn", "$title", "$subtitle", "side_identifier", "$authors__name"]


class MangaViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Manga.objects.all()
    serializer_class = MangaSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["isbn", "side_identifier"]
    search_fields = ["isbn", "$title", "$subtitle", "side_identifier", "$authors__name"]


class CDViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = CD.objects.all()
    serializer_class = CDSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["side_identifier"]
    search_fields = ["$title", "side_identifier", "$authors__name"]


class VinyleViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Vinyle.objects.all()
    serializer_class = VinyleSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["side_identifier", "rpm"]
    search_fields = ["$title", "side_identifier", "$authors__name"]


class RomanViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Roman.objects.all()
    serializer_class = RomanSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["isbn", "side_identifier", "number_of_pages"]
    search_fields = ["$title", "$subtitle", "side_identifier", "$authors__name"]


class RevueViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Revue.objects.all()
    serializer_class = RevueSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["number", "year", "month", "day", "double"]
    search_fields = ["$title"]



class FutureMediaViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = FutureMedia.objects.all()
    serializer_class = FutureMediaSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["isbn"]
    search_fields = ["$isbn"]


class EmpruntViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows borrowed items to be viewed or edited.
    """
    queryset = Emprunt.objects.all()
    serializer_class = EmpruntSerializer


class JeuViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows games to be viewed or edited.
    """
    queryset = Jeu.objects.all()
    serializer_class = JeuSerializer