# -*- 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.http import HttpResponse
from django_filters.rest_framework import DjangoFilterBackend
from django.db import transaction
from django.shortcuts import redirect
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from django.views.generic import TemplateView, DetailView
from rest_framework import viewsets
from rest_framework.filters import SearchFilter
from reversion import revisions as reversion

from .models import Author, CD, Comic, Emprunt, FutureMedium, Game, Manga,\
    Novel, Review, Vinyl
from .serializers import AuthorSerializer, ComicSerializer, CDSerializer,\
    EmpruntSerializer, FutureMediumSerializer, GameSerializer, \
    MangaSerializer, NovelSerializer, ReviewSerializer, VinylSerializer


@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")


class IndexView(TemplateView):
    """
    Home page which redirect to admin when logged in
    """
    extra_context = {'title': _('Welcome to the Mediatek database')}
    template_name = 'admin/index.html'

    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated:
            return redirect('admin:index')
        return super().dispatch(request, *args, **kwargs)


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


class MarkMediumAsPresent(LoginRequiredMixin, DetailView):
    def dispatch(self, request, *args, **kwargs):
        object = self.get_object()
        object.present = not request.GET.get("absent", False)
        object.save()
        return HttpResponse("", content_type=204)


class MarkComicAsPresent(MarkMediumAsPresent):
    model = Comic


class MarkMangaAsPresent(MarkMediumAsPresent):
    model = Manga


class MarkCDAsPresent(MarkMediumAsPresent):
    model = CD


class MarkVinylAsPresent(MarkMediumAsPresent):
    model = Vinyl


class MarkNovelAsPresent(MarkMediumAsPresent):
    model = Novel


class MarkReviewAsPresent(MarkMediumAsPresent):
    model = Review


class MarkFutureAsPresent(MarkMediumAsPresent):
    model = FutureMedium


class AuthorViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows authors to be viewed or edited.
    """
    queryset = Author.objects.all()
    serializer_class = AuthorSerializer


class ComicViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Comic.objects.all()
    serializer_class = ComicSerializer
    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 VinylViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = Vinyl.objects.all()
    serializer_class = VinylSerializer
    filter_backends = [DjangoFilterBackend, SearchFilter]
    filterset_fields = ["side_identifier", "rpm"]
    search_fields = ["title", "side_identifier", "authors__name"]


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


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


class FutureMediumViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows media to be viewed or edited.
    """
    queryset = FutureMedium.objects.all()
    serializer_class = FutureMediumSerializer
    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 GameViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows games to be viewed or edited.
    """
    queryset = Game.objects.all()
    serializer_class = GameSerializer