from rest_framework.viewsets import ReadOnlyModelViewSet
from rest_framework.permissions import AllowAny
from drf_spectacular.utils import extend_schema, extend_schema_view, OpenApiParameter
from django_core.mixins import BaseViewSetMixin
from core.apps.api.models import AdModel
from django_filters.rest_framework import DjangoFilterBackend
from core.apps.api.filters import AdFilter
from core.apps.api.serializers.ad.ad import (
    AdListSerializer,
    AdDetailSerializer,
    AdCreateSerializer,
)


@extend_schema_view(
    list=extend_schema(
        summary="List all ads",
        description="Get paginated list of all available ads with filtering options",
        tags=["Ads"],
        parameters=[
            OpenApiParameter(
                name="category",
                description="Filter by category ID",
                required=False,
                type=int
            ),
            OpenApiParameter(
                name="min_price",
                description="Minimum price filter",
                required=False,
                type=float
            ),
            OpenApiParameter(
                name="max_price",
                description="Maximum price filter",
                required=False,
                type=float
            ),
        ]
    ),
    retrieve=extend_schema(
        summary="Get ad details",
        description="Get detailed information about a specific ad including images, variants, and options",
        tags=["Ads"]
    ),
)
class AdViewSet(BaseViewSetMixin, ReadOnlyModelViewSet):
    """
    ViewSet for viewing and managing ads.
    
    list: Get list of all available ads with filtering
    retrieve: Get detailed information about a specific ad
    """
    queryset = AdModel.objects.select_related(
        "category", "user", "plan"
    ).prefetch_related(
        "images", "variants", "options", "tags"
    ).filter(is_available=True).order_by("-created_at")
    
    serializer_class = AdListSerializer
    permission_classes = [AllowAny]
    filter_backends = [DjangoFilterBackend]
    filterset_class = AdFilter

    def get_serializer_class(self):
        if self.action == "retrieve":
            return AdDetailSerializer
        elif self.action == "create":
            return AdCreateSerializer
        return AdListSerializer