import datetime
from django.shortcuts import get_object_or_404
from django.utils import timezone
from django_filters.rest_framework import DjangoFilterBackend
import googlemaps
from rest_framework import status, generics, mixins
from rest_framework.views import APIView
from django.conf import settings
from accounts import resource_action
from accounts.models import IAmPrincipalLocation
from goodtimes import constants
from django.db.models import Q, Count
from taggit.models import Tag
from django.utils.dateparse import parse_date
from goodtimes import services
from goodtimes.services import FacebookAPI, FacebookPoster, GoogleMapsservice, InstagramAPI, InstagramPoster, TwitterAPI, TwitterPoster
from goodtimes.utils import ApiResponse, CapacityError
from rest_framework.permissions import IsAuthenticated
from rest_framework_simplejwt.authentication import JWTAuthentication
from manage_cms.api.serializers import TagSerializer
from manage_events.api.serializers import (
    AgeGroupsSerializer,
    EventDateRangeSerializer,
    EventMasterSearchSerializer,
    EventMasterSerializer,
    CreateEventSerializer,
    CreateVenueSerializer,
    EventCategorySerializer,
    EventDetailSerializer,
    EventReviewSerializer,
    FreeUsageFeatureLimitSerializer,
    IAmPrincipalLocationSerializer,
    PrincipalPreferenceSerializer,
    VenueSerializer,
    EventListSerializer,
)
from manage_events.models import (
    AgeGroups,
    EventInteractionType,
    EventMaster,
    Event,
    EventCategory,
    EventPrincipalInteraction,
    EventReview,
    EventShare,
    EventView,
    Favorites,
    FreeUsageFeatureLimit,
    PrincipalPreference,
    Venue,
)
import requests

from manage_events.utils import haversine_one, update_principal_location
from manage_subscriptions.models import PrincipalSubscription
from .filters import EventFilter

class FreeUsageFeatureLimitView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    model = FreeUsageFeatureLimit
    serializer_class = FreeUsageFeatureLimitSerializer

    def get(self, request):
        obj = self.model.objects.first()
        serializer = self.serializer_class(obj)
        return ApiResponse.success(
            status=status.HTTP_200_OK,
            message=constants.SUCCESS,
            data=serializer.data,
        )

class CreateEventApi(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request):
        print("Data: ", request.data)
        serializer = CreateEventSerializer(data=request.data)
        serializer.is_valid(raise_exception=True)

        serializer.save(created_by=self.request.user, principal=self.request.user)

        # Add additional logic for handling other relationships (e.g., Venue)
        return ApiResponse.success(
            status=status.HTTP_201_CREATED,
            message=constants.SUCCESS,
            data=serializer.data,
        )


class EventEditAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    """
    Retrieve, update or delete a event instance.
    """

    def get_object(self, pk):
        try:
            return Event.objects.get(pk=pk)
        except Event.DoesNotExist:
            return ApiResponse.error(
                status=status.HTTP_400_BAD_REQUEST,
                message=constants.FAILURE,
                errors="Event not found",
            )

    def get(self, request, pk, format=None):
        event = self.get_object(pk)
        serializer = EventDetailSerializer(event)
        return ApiResponse.success(
            status=status.HTTP_200_OK,
            message=constants.SUCCESS,
            data=serializer.data,
        )

    def patch(self, request, pk, format=None):
        event = self.get_object(pk)
        serializer = CreateEventSerializer(event, data=request.data, partial=True)
        if serializer.is_valid():
            serializer.save()
            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data=serializer.data,
            )
        return ApiResponse.error(
            status=status.HTTP_400_BAD_REQUEST,
            message=constants.FAILURE,
            errors=serializer.errors,
        )


class CreateVenueApi(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request):

        data = request.data.copy()
        print("prindata is ", data)

        # Convert latitude and longitude to float and round to 8 decimal places
        data["latitude"] = round(float(data["latitude"]), 8)
        data["longitude"] = round(float(data["longitude"]), 8)

        serializer = VenueSerializer(data=data, context={"request": request})
        serializer.is_valid(raise_exception=True)

        serializer.save(
            created_by=self.request.user, principal=self.request.user, active=True
        )

        # Add additional logic for handling other relationships (e.g., Venue)
        return ApiResponse.success(
            status=status.HTTP_201_CREATED,
            message=constants.SUCCESS,
            data=serializer.data,
        )


# # Prepare the email
#     subject = f"Your Event Report for {start_date.month} {start_date.year}."
#     body = f"Please find attached the event report for {start_date.month} {start_date.month}."
#     email_service = EmailService(
#         subject="Good Times - Report",
#         to=[user.email],
#         from_email=settings.DEFAULT_FROM_EMAIL,
#     )
#     email_service.attach(filename, buffer.getvalue(), "application/pdf")

#     # Send the email
#     email_service.send()


class VenueDeleteAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    """
    API view to set a venue's 'deleted' to True and 'active' to False.
    """

    def patch(self, request, pk):
        try:
            venue = Venue.objects.get(pk=pk)
            venue.deleted = True
            venue.active = False
            venue.save()
            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data="Venue deleted successfully",
            )
        except Venue.DoesNotExist:
            return ApiResponse.error(
                status=status.HTTP_400_BAD_REQUEST,
                message=constants.FAILURE,
                errors="Venue not found",
            )


class MyEventsAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        filter_type = request.query_params.get("filter", None)
        user = request.user
        params = [
            "draft",
            "active",
            "active_past",
            "draft_past",
        ]
        if filter_type not in params:
            return ApiResponse.error(
                status=status.HTTP_400_BAD_REQUEST,
                message=constants.FAILURE,
                errors="No filter found",
            )

        if filter_type == "draft":
            events = services.MyEventFilterService.filter_my_events_draft(user)
        elif filter_type == "active":
            events = services.MyEventFilterService.filter_my_events_active(user)
        elif filter_type == "active_past":
            events = services.MyEventFilterService.filter_my_events_active_past(user)
        elif filter_type == "draft_past":
            events = services.MyEventFilterService.filter_my_events_draft_past(user)
        else:
            return ApiResponse.error(
                status=status.HTTP_400_BAD_REQUEST,
                message=constants.FAILURE,
                errors="Invalid filter parameter",
            )

        serializer = EventDetailSerializer(
            events, context={"request": request}, many=True
        )
        # serializer = EventListSerializer(
        #     events, context={"request": request}, many=True
        # )
        return ApiResponse.success(
            status=status.HTTP_200_OK,
            message=constants.SUCCESS,
            data=serializer.data,
        )


class PrinciaplPreferenceEventsAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        today = timezone.now().date()
        try:
            preferences = PrincipalPreference.objects.get(principal=request.user)
            preferred_categories_ids = preferences.preferred_categories.values_list(
                "id", flat=True
            )
            # Filter events based on user preferences and that are upcoming or ongoing
            events = Event.objects.filter(
                category__in=preferred_categories_ids, end_date__gte=today
            ).distinct()

            if not events.exists():
                # If no events found based on preferences, get future events
                events = Event.objects.filter(start_date__gt=today)
                serializer = EventDetailSerializer(events, many=True)
                return ApiResponse.success(
                    status=status.HTTP_200_OK,
                    message=constants.SUCCESS,
                    data=serializer.data,
                )

        except PrincipalPreference.DoesNotExist:
            # If the user has no preferences, default to future events
            events = Event.objects.filter(start_date__gt=today)


class EventDetailAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, pk):
        try:
            event = Event.objects.get(pk=pk)
            interaction = services.InteractionCalculator(event)
            interactions = interaction.calculate()

            # Serialize your event data here
            event_data = EventDetailSerializer(event, context={"request": request}).data
            event_data["interactions"] = interactions

            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data=event_data,
            )
        except Event.DoesNotExist:
            return ApiResponse.error(
                status=status.HTTP_404_NOT_FOUND,
                message=constants.FAILURE,
                errors=constants.RECORD_NOT_FOUND,
            )
        except CapacityError as e:
            return ApiResponse.error(
                status=status.HTTP_405_METHOD_NOT_ALLOWED,
                message=constants.FAILURE,
                errors=str(e),
            )


class VenueListView(generics.ListAPIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    serializer_class = VenueSerializer

    def get_queryset(self):
        # Ensures that a user sees only their venues
        return Venue.objects.filter(
            created_by=self.request.user, deleted=False, active=True
        )

    def list(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = self.get_serializer(queryset, many=True)
        # Customizing the response format
        return ApiResponse.success(
            status=status.HTTP_200_OK,
            message=constants.SUCCESS,
            data=serializer.data,
        )


class VenueDetailView(generics.RetrieveUpdateDestroyAPIView):
    queryset = Venue.objects.all()
    serializer_class = VenueSerializer
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        # This ensures a user can only access their own venues
        return self.queryset.filter(
            created_by=self.request.user, deleted=False, active=True
        )


class GeocodeAPIView(APIView):
    authentication_classes = []
    permission_classes = []
    """
    API View to fetch latitude and longitude for a given address using the Google Maps Geocoding API.
    """

    def get(self, request, *args, **kwargs):
        # Extract 'address' from query parameters
        address = request.query_params.get("address")
        print("address: ", address)
        if not address:
            return ApiResponse.error(
                {"error": "Address parameter is missing."},
                status=status.HTTP_400_BAD_REQUEST,
            )

        # Call the get_lat_long method
        lat_long = self.get_lat_long(address)
        if lat_long:
            return ApiResponse.success(
                {"latitude": lat_long[0], "longitude": lat_long[1]}
            )
        else:
            return ApiResponse.error(
                {"error": "Failed to fetch latitude and longitude."},
                status=status.HTTP_404_NOT_FOUND,
            )

    def get_lat_long(self, address):
        """
        Fetches latitude and longitude for a given address using the Google Maps Geocoding API.
        """
        url = "https://maps.googleapis.com/maps/api/geocode/json?"
        params = {
            "address": address,
            # "key": settings.GOOGLE_MAPS_API_KEY,  # Replace with your actual API key
            "key": "AIzaSyCQv-Cfzkh3cXerrui55oId7CDHhuIImhc",  # Replace with your actual API key
        }

        response = requests.get(url, params=params)

        if response.status_code == 200:
            data = response.json()
            if data["status"] == "OK":
                location = data["results"][0]["geometry"]["location"]
                latitude = location["lat"]
                longitude = location["lng"]
                return latitude, longitude
            else:
                print(f"Geocoding failed: {data['status']}")
                return None
        else:
            print(f"API request failed with status code: {response.status_code}")
            return None


class EventCategoryListAPIView(generics.ListAPIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    queryset = EventCategory.objects.all()
    serializer_class = EventCategorySerializer


class IAmPrincipalLocationAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        # Assuming there's a UserLocation model that stores user locations,
        # and it has a ForeignKey to the user model.
        try:
            user_location = IAmPrincipalLocation.objects.filter(
                principal=request.user
            ).last()
            print("user_location: ", user_location)
            serializer = IAmPrincipalLocationSerializer(user_location)
            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data=serializer.data,
            )
        except IAmPrincipalLocation.DoesNotExist:
            return ApiResponse.error(
                status=status.HTTP_404_NOT_FOUND,
                message="Location not found for the user.",
                errors="No location data available for the current user.",
            )

    def post(self, request, *args, **kwargs):
        data = request.data.copy()

        # Convert latitude and longitude to float and round to 8 decimal places
        latitude = round(float(data["latitude"]), 15)
        longitude = round(float(data["longitude"]), 15)

        try:
            principal = request.user
            location = IAmPrincipalLocation.objects.get(principal=principal)

            # Update existing location
            location.latitude = latitude
            location.longitude = longitude
            location.save()

            # Update principal fields using the utility function
            update_principal_location(principal, latitude, longitude)

            serializer = IAmPrincipalLocationSerializer(
                location, context={"request": request}
            )
            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data=serializer.data,
            )

        except IAmPrincipalLocation.DoesNotExist:
            # Create a new location object
            location = IAmPrincipalLocation.objects.create(
                principal=principal, latitude=latitude, longitude=longitude
            )

            # Update principal fields using the utility function
            update_principal_location(principal, latitude, longitude)

            serializer = IAmPrincipalLocationSerializer(
                location, context={"request": request}
            )
            return ApiResponse.success(
                status=status.HTTP_201_CREATED,
                message=constants.SUCCESS,
                data=serializer.data,
            )

        except Exception as e:
            print(f"Error occurred while saving location: {e}")
            return ApiResponse.error(
                status=status.HTTP_500_INTERNAL_SERVER_ERROR,
                message=constants.FAILURE,
                errors=str(e),
            )


class PrincipalPreferenceView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, *args, **kwargs):

        principal = request.user
        # Check if the principal has a subscription
        if not PrincipalSubscription.has_principal_subscription(principal):
            # Get the preferred categories from the request data
            preferred_categories = request.data.get("preferred_categories", [])

            # Get the category limit for free usage
            category_limit = FreeUsageFeatureLimit.get_category_limit()

            # Check if the principal is an event user and has exceeded the category limit
            if principal.principal_type.name == resource_action.PRINCIPAL_TYPE_EVENT_USER and len(preferred_categories) > category_limit:
                # Create an error message indicating that a paid subscription is required
                error_message = f"Upgrade to paid subscription to select more than {category_limit} categories."

                return ApiResponse.error(
                    status=status.HTTP_400_BAD_REQUEST,
                    message=error_message,
                    errors=error_message,
                )

        serializer = PrincipalPreferenceSerializer(
            data=request.data, context={"request": request}
        )
        if serializer.is_valid():
            serializer.save()
            return ApiResponse.success(
                message=constants.SUCCESS,
                data=serializer.data,
                status=status.HTTP_201_CREATED,
            )
        return ApiResponse.error(
            message=constants.FAILURE,
            errors=serializer.errors,
            status=status.HTTP_400_BAD_REQUEST,
        )


class PrincipalPreferenceDetailView(generics.RetrieveAPIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = PrincipalPreferenceSerializer

    def get_object(self):
        # Attempt to retrieve the authenticated user's preferences
        user = self.request.user
        obj, created = PrincipalPreference.objects.get_or_create(principal=user)
        return obj

    def retrieve(self, request, *args, **kwargs):
        instance = self.get_object()
        serializer = self.get_serializer(instance)
        return ApiResponse.success(
            data=serializer.data,
            message=constants.SUCCESS,
            status=status.HTTP_200_OK,
        )


class EventPreferencesView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    model = EventCategory
    serializer_class = EventCategorySerializer

    def get(self, request, *args, **kwargs):
        """Get all event categories for the authenticated user."""
        obj = self.model.objects.filter(active=True, deleted=False)
        serializer = self.serializer_class(obj, many=True,  context={"request": request})
        return ApiResponse.success(
            data=serializer.data, message=constants.SUCCESS, status=status.HTTP_200_OK
        )


class EventMasterSearchAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, *args, **kwargs):
        serializer = EventMasterSearchSerializer(data=request.data)
        if serializer.is_valid():
            title = serializer.validated_data.get("title")
            # Search for existing brands
            existing_event_master = EventMaster.objects.filter(title__icontains=title)
            if existing_event_master.exists():
                # Return existing brands
                return ApiResponse.success(
                    data=EventMasterSerializer(existing_event_master, many=True).data,
                    message=constants.SUCCESS,
                    status=status.HTTP_200_OK,
                )
            else:
                # No brand found, return an empty list
                return ApiResponse.success(
                    data=[],
                    message="No related EventMaster Found",
                    status=status.HTTP_200_OK,
                )
        return ApiResponse.error(
            message=constants.FAILURE,
            errors=serializer.errors,
            status=status.HTTP_400_BAD_REQUEST,
        )


class ToggleFavoriteView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, event_id, format=None):
        principal = request.user
        event = get_object_or_404(Event, pk=event_id)

        favorite, created = Favorites.objects.get_or_create(
            principal=principal, event=event
        )
        if not created:
            favorite.delete()
            return ApiResponse.success(
                data="removed",
                message=constants.SUCCESS,
                status=status.HTTP_200_OK,
            )

        return ApiResponse.success(
            data="added",
            message=constants.SUCCESS,
            status=status.HTTP_201_CREATED,
        )


class EventStatusUpdateAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, event_id):
        principal = (
            request.user
        )  # Assuming you're using some form of user authentication
        event = get_object_or_404(Event, pk=event_id)

        status_requested = request.data.get("status")  # 'going' or 'interested'
        if status_requested not in EventInteractionType.values:
            return ApiResponse.error(
                message=constants.FAILURE,
                errors="Invalid status provided.",
                status=status.HTTP_400_BAD_REQUEST,
            )

        interaction, created = EventPrincipalInteraction.objects.update_or_create(
            principal=principal,
            event=event,
            defaults={"status": status_requested},
        )

        if created:
            return ApiResponse.success(
                data=status_requested,
                message=f"Marked as {status_requested}.",
                status=status.HTTP_201_CREATED,
            )
        else:
            return ApiResponse.success(
                data=status_requested,
                message=f"Updated status to {status_requested}.",
                status=status.HTTP_200_OK,
            )


# Filter Events within 10 KMs
class EventFilterByLocationAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        principal = request.user
        today = timezone.now().date()
        # Fetching user location from IAmPrincipalLocation
        try:
            user_location = IAmPrincipalLocation.objects.filter(
                principal=principal
            ).last()
            print("user_location: ", user_location)
            print("principal_user_location: ", user_location.principal)
            user_lat = user_location.latitude
            user_lon = user_location.longitude
        except IAmPrincipalLocation.DoesNotExist:
            return ApiResponse.error(
                errors=constants.FAILURE,
                message="User location not set.",
                status=status.HTTP_400_BAD_REQUEST,
            )

        max_distance_km = 10  # Set your desired maximum distance
        current_and_future_events_query = Q(
            active=True,
            deleted=False,
            draft=False,
            created_by__is_active=True,
        ) & (Q(end_date__gte=today))

        # Get the queryset based on the filter conditions
        events_queryset = Event.objects.filter(current_and_future_events_query)

        venue_ids = events_queryset.values_list("venue", flat=True).distinct()
        venues = Venue.objects.filter(id__in=venue_ids)
        print("venues: ", venues)

        venues_within_range = []
        for venue in venues:
            if venue.longitude is None or venue.latitude is None:
                continue  # Skip this venue if longitude or latitude is missing
            distance = haversine_one(
                user_lon, user_lat, venue.longitude, venue.latitude
            )
            print("distance: ", distance)
            if distance <= max_distance_km:
                print(
                    venue
                )  # This will print the venue object, or whatever __str__ returns for the venue model
                venues_within_range.append(venue.id)
        print("venues_within_range: ", venues_within_range)
        # venues_data = [venue_to_dict(venue) for venue in venues_within_range]
        events = events_queryset.filter(venue__id__in=venues_within_range)

        # Serialize and return the filtered events
        serializer = EventDetailSerializer(
            events, context={"request": request}, many=True
        )
        return ApiResponse.success(
            data=serializer.data,
            message=constants.SUCCESS,
            status=status.HTTP_200_OK,
        )


# Filter Principal's Favorites Events
class FavoriteEventsList(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        principal = request.user
        events = Event.objects.filter(
            id__in=Favorites.objects.filter(principal=principal)
            .select_related("event")
            .values_list("event_id", flat=True),
            deleted=False,
            active=True,
            draft=False,
        )
        serializer = EventDetailSerializer(
            events, context={"request": request}, many=True
        )
        return ApiResponse.success(
            data=serializer.data,
            message=constants.SUCCESS,
            status=status.HTTP_200_OK,
        )


class EventDateRangeAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        start_date_str = request.query_params.get("start_date")
        end_date_str = request.query_params.get("end_date")

        # Attempt to parse the dates from the query parameters
        start_date = parse_date(start_date_str)
        end_date = parse_date(end_date_str)

        # Validate the parsed dates
        if not start_date or not end_date:
            return ApiResponse.error(
                errors={
                    "start_date": "Invalid or missing",
                    "end_date": "Invalid or missing",
                },
                message=constants.FAILURE,
                status=status.HTTP_400_BAD_REQUEST,
            )

        events = Event.objects.filter(
            Q(end_date__gte=start_date)
            & Q(start_date__lte=end_date)
            & Q(deleted=False)
            & Q(active=True)
            & Q(draft=False)
        )

        serializer = EventDetailSerializer(
            events, context={"request": request}, many=True
        )
        return ApiResponse.success(
            data=serializer.data,
            message=constants.SUCCESS,
            status=status.HTTP_200_OK,
        )


class EventReviewCreateAPIView(mixins.CreateModelMixin, generics.GenericAPIView):
    queryset = EventReview.objects.filter(active=True, deleted=False)
    serializer_class = EventReviewSerializer

    def post(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        if serializer.is_valid():
            self.perform_create(serializer)
            headers = self.get_success_headers(serializer.data)
            return ApiResponse.success(
                "Review created successfully.",
                data=serializer.data,
                status=status.HTTP_201_CREATED,
            )
        else:
            return ApiResponse.error(
                "Validation error.",
                errors=serializer.errors,
                status=status.HTTP_400_BAD_REQUEST,
            )


class CheckPrincipalPreference(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        try:
            principal = request.user
            exists = PrincipalPreference.objects.filter(principal=principal).exists()
            return ApiResponse.success(
                message=constants.SUCCESS,
                data=exists,
                status=status.HTTP_200_OK,
            )
        except Exception as e:
            return ApiResponse.error(
                message=constants.FAILURE,
                errors=str(e),
                status=status.HTTP_400_BAD_REQUEST,
            )


# class PrincipalEventsInteractionView(APIView):
#     authentication_classes = [JWTAuthentication]
#     permission_classes = [IsAuthenticated]

#     def get(self, request, *args, **kwargs):
#         principal = self.request.user
#         interactions = EventPrincipalInteraction.objects.filter(
#             principal=principal
#         ).prefetch_related("event")

#         # Prefetch related events, sorting them by start_date
#         events = Event.objects.filter(
#             id__in=[interaction.event_id for interaction in interactions]
#         ).order_by("-start_date")
#         serializer = EventDetailSerializer(
#             events, context={"request": request}, many=True
#         )
#         return ApiResponse.success(
#             message=constants.SUCCESS,
#             data=serializer.data,
#             status=status.HTTP_200_OK,
#         )


class PrincipalEventsInteractionView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        principal = self.request.user
        interactions = EventPrincipalInteraction.objects.filter(
            principal=principal
        ).prefetch_related("event")
        favorite_events = Favorites.objects.filter(
            principal=principal
        ).prefetch_related("event")

        event_ids = set(interaction.event.id for interaction in interactions) | set(
            favorite.event.id for favorite in favorite_events
        )

        events = Event.objects.filter(id__in=event_ids).order_by("-start_date")
        events = list(
            events
        )  # To ensure that the queryset is evaluated and we don't send a QuerySet object in the serializer context

        serializer = EventDetailSerializer(
            events, context={"request": request}, many=True
        )
        return ApiResponse.success(
            message=constants.SUCCESS,
            data=serializer.data,
            status=status.HTTP_200_OK,
        )


class TagListView(generics.ListAPIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = TagSerializer

    def get_queryset(self):
        return Tag.objects.all().distinct()

    def list(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = self.get_serializer(queryset, many=True)
        return ApiResponse.success(
            message=constants.SUCCESS,
            data=serializer.data,
            status=status.HTTP_200_OK,
        )


class CaptureEventViewAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, pk):
        try:
            event = Event.objects.get(pk=pk)
            user = request.user
            location_parts = [user.city, user.state, user.country]
            location = " ".join(part for part in location_parts if part)

            EventView.objects.create(event=event, principal=user, location=location)

            return ApiResponse.success(
                message=constants.SUCCESS,
                data="Event view recorded successfully.",
                status=status.HTTP_200_OK,
            )
        except Event.DoesNotExist:
            return ApiResponse.error(
                message=constants.FAILURE,
                errors="Event not found.",
                status=status.HTTP_400_BAD_REQUEST,
            )


class EventShareView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request, pk):
        try:
            event = Event.objects.get(id=pk)
        except Event.DoesNotExist:
            return ApiResponse.error(
                message=constants.FAILURE,
                errors="Event not found.",
                status=status.HTTP_400_BAD_REQUEST,
            )

        # Incrementing the social media shares count
        event.increment_shares()

        user = request.user  # Assuming the user is authenticated
        EventShare.objects.create(principal=user, event=event)

        return ApiResponse.success(
            message=constants.SUCCESS,
            data="Event shared successfully.",
            status=status.HTTP_200_OK,
        )

class AgeGroupListView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = AgeGroupsSerializer
    model = AgeGroups

    def get(self, request):
        queryset = self.model.objects.filter(active=True)
        serializer = self.serializer_class(queryset, many=True)
        return ApiResponse.success(message=constants.SUCCESS, data=serializer.data)


class EventsCalenderAPIView(APIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]

    def get(self, request, *args, **kwargs):
        try:
            principal = request.user
            queryset = Event.objects.filter(
                active=True,
                draft=False,
                deleted=False,
                end_date__gte=timezone.now().date()
            )

            # queryset = Event.objects.filter(
            #     ((Q(active=True) & Q(draft=False) & Q(deleted=False) & Q(end_date__gte=timezone.now().date())))
            # )

            preferences = PrincipalPreference.objects.get(principal=principal)
            preferred_categories_ids = preferences.preferred_categories.values_list("id", flat=True)

            # Filter the queryset to only include events in the user's preferred categories
            queryset = queryset.filter(Q(category__in=preferred_categories_ids) | Q(principal=principal))

            serializer = EventListSerializer(
                queryset, context={"request": request}, many=True
            )
            return ApiResponse.success(
                status=status.HTTP_200_OK,
                message=constants.SUCCESS,
                data=serializer.data,
            )
        except Exception as e:
            return ApiResponse.error(
                status=status.HTTP_400_BAD_REQUEST,
                message=constants.FAILURE,
                errors=str(e),
            )


class EventListView(generics.ListAPIView):
    authentication_classes = [JWTAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = EventListSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_class = EventFilter

    def get_queryset(self):
        """
            Returns a queryset of events filtered by the user's preferences and subscription status.
        """
        principal = self.request.user

        # Filter the base queryset to only include active, non-draft, non-deleted events with an end date in the future
        queryset = Event.objects.filter(
            active=True,
            draft=False,
            deleted=False,
            end_date__gte=timezone.now().date()
        )

        # If no filter is applied and the user does not have a subscription, 
        # only show events that match the user's preferred categories
        if not self.request.query_params or not PrincipalSubscription.has_principal_subscription(principal):
            # Get the user's preferred categories
            preferences = PrincipalPreference.objects.get(principal=principal)
            preferred_categories_ids = preferences.preferred_categories.values_list("id", flat=True)

            # Filter the queryset to only include events in the user's preferred categories
            queryset = queryset.filter(category__in=preferred_categories_ids).order_by("start_date")

        return queryset

    def filter_queryset(self, queryset):
        queryset = super().filter_queryset(queryset)

        # Get query parameters
        latitude = self.request.query_params.get("latitude", "")
        longitude = self.request.query_params.get("longitude", "")
        ordering = self.request.query_params.get("sort", "")

        # Handle nearest location sorting
        if latitude and longitude and "nearest" in ordering:
            queryset = self.apply_nearest_filter(queryset, latitude, longitude)

        # Handle popularity and latest sorting
        queryset = self.apply_sorting(queryset, ordering)

        return queryset

    def apply_nearest_filter(self, queryset, latitude, longitude):
        gmaps_service = GoogleMapsservice()
        return gmaps_service.get_nearest_events(queryset, float(latitude), float(longitude))

    def apply_sorting(self, queryset, ordering):
        # Split ordering fields and process each field
        ordering_fields = [field.lstrip("-") for field in ordering.split(",")]

        # Remove 'nearest' from ordering as it's handled separately
        if "nearest" in ordering_fields:
            ordering_fields.remove("nearest")
            ordering = ordering.replace("nearest", "")

        # Annotate with popularity and order it if requested
        if "popularity" in ordering_fields:
            queryset = queryset.annotate(popularity=Count("interaction_event")).order_by("-popularity")

        # order latest record and by default sorting
        if "latest" in ordering_fields:
            queryset = queryset.order_by("start_date")

        if "price" in ordering_fields:
            queryset = queryset.order_by('entry_fee')

        return queryset

    def get(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())
        page = self.paginate_queryset(queryset)
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            return self.get_paginated_response(serializer.data)

        serializer = self.get_serializer(queryset, many=True)
        return ApiResponse.success(message=constants.SUCCESS, data=serializer.data)
    

from rest_framework.response import Response
class SocialMediaPostView(APIView):
    def get(self, request, *args, **kwargs):
        platform = request.query_params.get("platform", "")
        event_id = kwargs.get("id")
        print(platform, event_id)
        errors = []
        success_messages = []

        try:
            event = Event.objects.get(id=event_id)
        except Event.DoesNotExist:
            errors.append("Event does not exist")
            return Response({
                'message': "Error in posting to social media",
                'errors': errors,
                'success_messages': success_messages
            }, status=400)

        if not event.active:
            errors.append("Event is not active")
            return Response({
                'message': "Error in posting to social media",
                'errors': errors,
                'success_messages': success_messages
            }, status=400)

        caption = f"{event.title}\nDuration: {event.start_date} to {event.end_date}\nAddress: {event.venue.address}"

        if platform in ['instagram', 'facebook', 'twitter', 'all']:
            if platform in ['twitter', 'all']:
                image_url = event.image.path
                twitter_api = TwitterAPI()
                twitter_poster = TwitterPoster(twitter_api)
                result = twitter_poster.post_image_with_caption(image_url, caption)
                if result['success']:
                    success_messages.append("Posted to Twitter successfully")
                else:
                    errors.append("Fail to post on Twitter")

            image_url = request.build_absolute_uri(event.image.url)
            if platform in ['facebook', 'all']:
                facebook_api = FacebookAPI()
                facebook_poster = FacebookPoster(facebook_api)
                result = facebook_poster.post_photo(image_url, caption)
                if result["success"]:
                    success_messages.append("Posted to Facebook successfully")
                else:
                    errors.append("Fail to post on Facebook")

            if platform in ['instagram', 'all']:
                instagram_api = InstagramAPI()
                instagram_poster = InstagramPoster(instagram_api)
                result = instagram_poster.post_image_with_caption(image_url, caption)
                if result["success"]:
                    success_messages.append("Posted to Instagram successfully")
                else:
                    errors.append("Fail to post on Instagram")

        if not errors:
            return Response({'message': 'Post Successful', 'errors': errors, 'success_messages': success_messages})

        if errors and success_messages:
            return Response({
                'message': 'Some posts succeeded while others failed',
                'errors': errors,
                'success_messages': success_messages
            }, status=200)

        return Response({
            'message': 'Error in posting to social media',
            'errors': errors,
            'success_messages': success_messages
        }, status=400)