from django.db.models import Q
from rest_framework.authentication import TokenAuthentication
from rest_framework.decorators import action
from rest_framework.parsers import FormParser, JSONParser, MultiPartParser
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework.viewsets import ModelViewSet, ReadOnlyModelViewSet

from apps.account.permissions import IsSuperAdmin
from utils.pagination import StandardResultsSetPagination

from .models import Hadis, HadisCategory, HadisCorrection, HadisInterpretation, HadisStatus, HadisTag
from .serializers.serializers_admin import (
    AdminHadisCategorySerializer,
    AdminHadisCorrectionSerializer,
    AdminHadisDetailSerializer,
    AdminHadisInterpretationSerializer,
    AdminHadisListSerializer,
    AdminHadisStatusSerializer,
    AdminHadisTagSerializer,
)


class AdminHadisCategoryViewSet(ReadOnlyModelViewSet):
    serializer_class = AdminHadisCategorySerializer
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    pagination_class = None

    def get_queryset(self):
        return HadisCategory.objects.all().order_by("order", "id")


class AdminHadisStatusViewSet(ReadOnlyModelViewSet):
    serializer_class = AdminHadisStatusSerializer
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    pagination_class = None

    def get_queryset(self):
        return HadisStatus.objects.all().order_by("order", "id")


class AdminHadisTagViewSet(ReadOnlyModelViewSet):
    serializer_class = AdminHadisTagSerializer
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    pagination_class = None

    def get_queryset(self):
        return HadisTag.objects.all().order_by("id")



class AdminHadisViewSet(ModelViewSet):
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    pagination_class = StandardResultsSetPagination
    parser_classes = (MultiPartParser, FormParser, JSONParser)

    def get_serializer_class(self):
        if self.action == "list":
            return AdminHadisListSerializer
        return AdminHadisDetailSerializer

    def get_queryset(self):
        queryset = Hadis.objects.all().select_related("category", "hadis_status")

        search_query = self.request.query_params.get("search")
        if search_query:
            q_filter = (
                Q(title__icontains=search_query)
                | Q(title_narrator__icontains=search_query)
                | Q(text__icontains=search_query)
                | Q(translation__icontains=search_query)
                | Q(slug__icontains=search_query)
            )
            if search_query.isdigit():
                q_filter |= Q(number=int(search_query))
            queryset = queryset.filter(q_filter)

        category_id = self.request.query_params.get("category")
        if category_id and category_id != "all":
            queryset = queryset.filter(category_id=category_id)

        status_filter = self.request.query_params.get("status")
        if status_filter in {"true", "false"}:
            queryset = queryset.filter(status=status_filter == "true")

        return queryset.distinct().order_by("-id")


class AdminHadisCorrectionViewSet(ModelViewSet):
    serializer_class = AdminHadisCorrectionSerializer
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    parser_classes = (JSONParser, MultiPartParser, FormParser)

    def get_queryset(self):
        queryset = HadisCorrection.objects.all()
        hadis_id = self.request.query_params.get("hadis_id")
        if hadis_id:
            queryset = queryset.filter(hadis_id=hadis_id)
        return queryset.order_by("priority", "created_at")

    @action(detail=False, methods=["post"])
    def reorder(self, request):
        correction_ids = request.data.get("correction_ids", [])
        if not correction_ids:
            return Response({"error": "correction_ids list is required"}, status=400)

        for index, correction_id in enumerate(correction_ids, start=1):
            HadisCorrection.objects.filter(id=correction_id).update(priority=index)

        return Response({"status": "success"})


class AdminHadisInterpretationViewSet(ModelViewSet):
    serializer_class = AdminHadisInterpretationSerializer
    permission_classes = [IsAuthenticated, IsSuperAdmin]
    authentication_classes = [TokenAuthentication]
    parser_classes = (JSONParser, MultiPartParser, FormParser)

    def get_queryset(self):
        queryset = HadisInterpretation.objects.all()
        category_id = self.request.query_params.get("category_id")
        if category_id:
            queryset = queryset.filter(category_id=category_id)
        return queryset.order_by("priority", "created_at")

    @action(detail=False, methods=["post"])
    def reorder(self, request):
        interpretation_ids = request.data.get("interpretation_ids", [])
        if not interpretation_ids:
            return Response({"error": "interpretation_ids list is required"}, status=400)

        for index, interpretation_id in enumerate(interpretation_ids, start=1):
            HadisInterpretation.objects.filter(id=interpretation_id).update(priority=index)

        return Response({"status": "success"})