"""Product app views."""
from rest_framework import generics, permissions
from django.shortcuts import get_object_or_404
from product.models import Product
from comment.models import Comment
from product import filters, serializers
from comment.serializers import CommentRUDSerializer
from utils.views import FavoritesCreateDestroyMixinView


class ProductBaseView(generics.GenericAPIView):
    """Product base view"""
    permission_classes = (permissions.AllowAny,)

    def get_queryset(self):
        """Override get_queryset method."""
        return Product.objects.published() \
            .with_base_related() \
            .annotate_in_favorites(self.request.user) \
            .order_by('-created')


class ProductListView(ProductBaseView, generics.ListAPIView):
    """List view for model Product."""
    serializer_class = serializers.ProductBaseSerializer
    filter_class = filters.ProductFilterSet

    def get_queryset(self):
        qs = super().get_queryset().with_extended_related() \
                                   .by_country_code(self.request.country_code)
        return qs


class ProductDetailView(ProductBaseView, generics.RetrieveAPIView):
    """Detail view fro model Product."""
    lookup_field = 'slug'
    serializer_class = serializers.ProductDetailSerializer


class CreateFavoriteProductView(FavoritesCreateDestroyMixinView):
    """View for create/destroy product in favorites."""

    _model = Product
    serializer_class = serializers.ProductFavoritesCreateSerializer


class ProductCommentCreateView(generics.CreateAPIView):
    """View for create new comment."""
    lookup_field = 'slug'
    serializer_class = serializers.ProductCommentCreateSerializer
    queryset = Comment.objects.all()


class ProductCommentListView(generics.ListAPIView):
    """View for return list of product comments."""

    permission_classes = (permissions.AllowAny,)
    serializer_class = serializers.ProductCommentCreateSerializer

    def get_queryset(self):
        """Override get_queryset method"""
        product = get_object_or_404(Product, slug=self.kwargs['slug'])
        return Comment.objects.by_content_type(app_label='product',
                                               model='product') \
            .by_object_id(object_id=product.pk) \
            .order_by('-created')


class ProductCommentRUDView(generics.RetrieveUpdateDestroyAPIView):
    """View for retrieve/update/destroy product comment."""
    serializer_class = CommentRUDSerializer
    queryset = Product.objects.all()

    def get_object(self):
        """Returns the object the view is displaying."""
        queryset = self.filter_queryset(self.get_queryset())

        product_obj = get_object_or_404(queryset,
                                        slug=self.kwargs['slug'])
        comment_obj = get_object_or_404(product_obj.comments.by_user(self.request.user),
                                        pk=self.kwargs['comment_id'])

        # May raise a permission denied
        self.check_object_permissions(self.request, comment_obj)

        return comment_obj