from rest_framework import serializers
from django.db import IntegrityError
from django.urls import reverse
from .utils import send_activation_email
import uuid
from rest_framework.exceptions import ValidationError as DRFValidationError

from django.db import transaction
from django.db.models import F
from rest_framework import viewsets, permissions, status
from rest_framework.decorators import action
from rest_framework.response import Response
from django.shortcuts import get_object_or_404
from .models import Team, Member, CustomUser, NewCategory
from .serializers import TeamSerializer, MemberSerializer, CustomUserSerializer, TeamDetailSerializer,UserUpdateSerializer
from .permissions import IsTeamOwner

from curses.ascii import NUL
from django.core.serializers import serialize
from .models import GoalImages, Location, Location_line, Location_polygon, JpnAdminMainPerf, Useractions, GifuAreas, RogUser, CustomUser, UserTracks, GoalImages, CheckinImages, NewEvent,NewEvent2, Team, Category, NewCategory,Entry, Member, TempUser,EntryMember
from rest_framework import viewsets
from .serializers import LocationSerializer, Location_lineSerializer, Location_polygonSerializer, JPN_main_perfSerializer, LocationCatSerializer, CreateUserSerializer, UserSerializer, LoginUserSerializer, UseractionsSerializer, UserDestinationSerializer, GifuAreaSerializer, LocationEventNameSerializer, RogUserSerializer, UserTracksSerializer, ChangePasswordSerializer, GolaImageSerializer, CheckinImageSerializer, RegistrationSerializer, MemberWithUserSerializer
from knox.models import AuthToken

from rest_framework import viewsets, generics, status
from rest_framework.response import Response
from rest_framework.parsers import JSONParser, MultiPartParser
from .serializers import LocationSerializer
from django.http import JsonResponse
from rest_framework.permissions import IsAuthenticated 
from django.contrib.gis.db.models import Extent, Union

from .serializers import TestSerialiser,NewEventSerializer,NewEvent2Serializer, TeamSerializer, NewCategorySerializer,CategorySerializer, EntrySerializer, MemberSerializer, TempUserSerializer, CustomUserSerializer,EntryMemberSerializer,EntryCreationSerializer
from .models import TestModel
from django.shortcuts import get_object_or_404
from django.db.models import F
from django.contrib.gis import geos
from django.db.models import Q

from rest_framework import permissions
from rest_framework.views import APIView
from rest_framework.decorators import api_view
from rest_framework.decorators import api_view, permission_classes
from rest_framework.parsers import JSONParser, MultiPartParser
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render
from .permissions import IsMemberOrTeamOwner

from django.utils.decorators import method_decorator
from django.utils.encoding import force_str

import logging

logger = logging.getLogger(__name__)


class LocationViewSet(viewsets.ModelViewSet):
    queryset=Location.objects.all()
    serializer_class=LocationSerializer
    filter_fields=["prefecture", "location_name"]


class Location_lineViewSet(viewsets.ModelViewSet):
    queryset=Location_line.objects.all()
    serializer_class=Location_lineSerializer


class Location_polygonViewSet(viewsets.ModelViewSet):
    queryset=Location_polygon.objects.all()
    serializer_class=Location_polygonSerializer


class Jpn_Main_PerfViewSet(viewsets.ModelViewSet):
    queryset=JpnAdminMainPerf.objects.filter(id=9)
    serializer_class=JPN_main_perfSerializer
    filter_fields = ["adm1_ja"]



class UserTracksViewSet(viewsets.ModelViewSet):    
    queryset = UserTracks.objects.all()
    serializer_class = UserTracksSerializer



def LocationsInPerf(request):
    perfecture = request.GET.get('perf')
    is_rog = request.GET.get('rog')
    cat = request.GET.get('cat')
    grp = request.GET.get('grp')
    perf_geom = JpnAdminMainPerf.objects.get(id=perfecture)
    
    if(cat):
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, category=cat, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, category=cat)
        else:
            if grp:
                locs = Location.objects.filter(geom__within=perf_geom.geom, category=cat, group__contains=grp, location_name__contains='観光')
            else:
                locs = Location.objects.filter(geom__within=perf_geom.geom, category=cat, location_name__contains='観光')
    else:
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom)
        else:
            if grp:
                locs = Location.objects.filter(geom__within=perf_geom.geom, group__contains=grp, location_name__contains='観光') 
            else:
                locs = Location.objects.filter(geom__within=perf_geom.geom, location_name__contains='観光') 

    serializer = LocationSerializer(locs, many=True)
    return JsonResponse(serializer.data, safe=False)

def LocationsInSubPerf(request):
    subperfecture = request.GET.get('subperf')
    is_rog = request.GET.get('rog')
    cat = request.GET.get('cat')
    grp = request.GET.get('grp')
    perf_geom = JpnSubPerf.objects.get(id=subperfecture)
    
    if(cat):
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, category=cat, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, category=cat)
        else:
            if grp:
                locs = Location.objects.filter(geom__within=perf_geom.geom, category=cat, group__contains=grp, location_name__contains='観光')
            else:
                locs = Location.objects.filter(geom__within=perf_geom.geom, category=cat, location_name__contains='観光')
    else:
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), geom__within=perf_geom.geom)
        else:
            locs = Location.objects.filter(geom__within=perf_geom.geom, location_name__contains='観光')
    serializer = LocationSerializer(locs, many=True)
    return JsonResponse(serializer.data, safe=False)


def LocationInBound(request):
    lat1 = float(request.GET.get('la1'))
    lon1 = float(request.GET.get('ln1'))
    lat2 = float(request.GET.get('la2'))
    lon2 = float(request.GET.get('ln2'))
    lat3 = float(request.GET.get('la3'))
    lon3 = float(request.GET.get('ln3'))
    lat4 = float(request.GET.get('la4'))
    lon4 = float(request.GET.get('ln4'))
    cat = request.GET.get('cat')
    grp = request.GET.get('grp')

    is_rog = request.GET.get('rog')

    if(lat1 != None and lon1 != None and lat2 != None and lon2 != None and lat3 != None and lon3 != None and lat4 != None and lon4 != None):
        pl = geos.Polygon(((lon1, lat1), (lon2, lat2), (lon3, lat3), (lon4, lat4), (lon1, lat1)), srid=4326)
        if(cat):
            if is_rog:
                if grp:
                    locs = Location.objects.filter(~Q(cp=0), geom__within=pl, category=cat, event_name__isnull=True, group__contains=grp)
                else:
                    locs = Location.objects.filter(~Q(cp=0), geom__within=pl, category=cat, event_name__isnull=True)
            else:
                if grp:
                    locs = Location.objects.filter(geom__within=pl, category=cat, event_name__isnull=True, group__contains=grp, location_name__contains='観光')
                else:
                    locs = Location.objects.filter(geom__within=pl, category=cat, event_name__isnull=True, location_name__contains='観光')
        else:
            if is_rog:
                if grp:
                    locs = Location.objects.filter(~Q(cp=0), geom__within=pl, event_name__isnull=True, group__contains=grp)
                else:
                    locs = Location.objects.filter(~Q(cp=0), geom__within=pl, event_name__isnull=True)
            else:
                if grp:
                    locs = Location.objects.filter(geom__within=pl, event_name__isnull=True, group__contains=grp, location_name__contains='観光')
                else:
                    locs = Location.objects.filter(geom__within=pl, event_name__isnull=True, location_name__contains='観光')
        if len(locs) > 120:
            return JsonResponse({"too_many_points": True}, safe=False, status=500)
        else:
            serializer = LocationSerializer(locs, many=True)
            return JsonResponse(serializer.data, safe=False)
    else:
        return JsonResponse({}, safe=False)



    
def SubInPerf(request):
    prefecture = request.GET.get('perf')
    perf_geom = JpnAdminMainPerf.objects.get(id=prefecture)
    sub = JpnAdminPerf.objects.filter(geom__within=perf_geom.geom)
    serializer = JPN_perfSerializer(sub, many=True)
    return JsonResponse(serializer.data, safe=False)


def SubPerfInMainPerf(request):
    area = request.GET.get('area')
    perf_geom = GifuAreas.objects.get(id=area)
    sub = JpnSubPerf.objects.filter(geom__contained=perf_geom.geom)
    #serializer = JPN_sub_perSerializer
    #sub = JpnAdminPerf.objects.filter(geom__within=perf_geom.geom)
    serializer = JPN_sub_perSerializer(sub, many=True)
    return JsonResponse(serializer.data, safe=False)

def GetAllGifuAreas(request):
    prefecture = request.GET.get('perf')
    perf_geom = JpnAdminMainPerf.objects.get(id=prefecture)
    sub = GifuAreas.objects.filter(geom__contained=perf_geom.geom)
    serializer = GifuAreaSerializer(sub, many=True)
    return JsonResponse(serializer.data, safe=False)


def ExtentForMainPerf(request):
    perf_id = request.GET.get('perf')
    perf = JpnAdminMainPerf.objects.get(id=perf_id)
    ext = perf.geom.extent
    # iata = serializers.serialize("json",ext)
    return JsonResponse(ext, safe=False)

@api_view(['POST',])
@permission_classes((IsAuthenticated,))
@csrf_exempt 
def ExtentForLocations(request):
    user = request.user
    ec = user.event_code
    #print(user.event_code)
    locs = Location.objects.filter(group__contains=ec).aggregate(Extent('geom'), Union('geom'))
    return JsonResponse(locs['geom__extent'], safe=False)


def ExtentForSubPerf(request):
    sub_perf_id = request.GET.get('sub_perf')
    sub_perf = JpnSubPerf.objects.get(id=sub_perf_id)
    ext = sub_perf.geom.extent
    # iata = serializers.serialize("json",ext)
    return JsonResponse(ext, safe=False)
    

def CatView(request):
    lat1 = float(request.GET.get('la1'))
    lon1 = float(request.GET.get('ln1'))
    lat2 = float(request.GET.get('la2'))
    lon2 = float(request.GET.get('ln2'))
    lat3 = float(request.GET.get('la3'))
    lon3 = float(request.GET.get('ln3'))
    lat4 = float(request.GET.get('la4'))
    lon4 = float(request.GET.get('ln4'))

    if(lat1 != None and lon1 != None and lat2 != None and lon2 != None and lat3 != None and lon3 != None and lat4 != None and lon4 != None):
        pl = geos.Polygon(((lon1, lat1), (lon2, lat2), (lon3, lat3), (lon4, lat4), (lon1, lat1)), srid=4326)
        #locs = Location.objects.filter(geom__within=pl)
        c = Location.objects.filter(geom__within=pl).values('category').distinct()
        serializer = LocationCatSerializer(c, many=True)
        return JsonResponse(serializer.data, safe=False)
    else:
        return null


    c = Location.objects.filter().values('category').distinct()
    serializer = LocationCatSerializer(c, many=True)
    return JsonResponse(serializer.data, safe=False)


def CatByCity(request):
    city = request.GET.get('city')
    if(city != None):
        cilt_polygon = JpnSubPerf.objects.filter(adm1_ja=city)
        cats = Location.objects.filter(geom__within=cilt_polygon[0].geom).values('category').distinct()
        serializer = LocationCatSerializer(cats, many=True)
        return JsonResponse(serializer.data, safe=False)
    else:
        return None



class RegistrationAPI(generics.GenericAPIView):
    serializer_class = CreateUserSerializer

    def post(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        user = serializer.save()
        return Response({
            "user": UserSerializer(user, context=self.get_serializer_context()).data,
            "token": AuthToken.objects.create(user)[1]
        })


class LoginAPI(generics.GenericAPIView):
    serializer_class = LoginUserSerializer

    def post(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        user = serializer.validated_data
        return Response({
            "user": UserSerializer(user, context=self.get_serializer_context()).data,
            "token": AuthToken.objects.create(user)[1]
        })

class UserUpdateAPI(generics.UpdateAPIView):
    permission_classes = [permissions.IsAuthenticated]
    serializer_class = UserUpdateSerializer

    def get_object(self):
        return self.request.user

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)

        if getattr(instance, '_prefetched_objects_cache', None):
            instance._prefetched_objects_cache = {}

        return Response(serializer.data)

class UserAPI(generics.RetrieveAPIView):
    permission_classes = [permissions.IsAuthenticated,]
    serializer_class = UserSerializer

    def get_object(self):
        return self.request.user

# @api_view(['POST',])
# @permission_classes((IsAuthenticated,))
# @csrf_exempt 
# class GoalImageViewSet(APIView):
#     permissions_classes = [permissions.IsAuthenticated,]
#     # parser_classes = [MultiPartParser, JSONParser]

#     def post(self, request, format=None):
#         # print(request.data)
#         serializer = GolaImageSerializer(data=request.data)
#         if serializer.is_valid():
#             serializer.save()
#             return Response(serializer.data, status=status.HttP_200_OK)
#         else:
#             return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

#         return Response({"ok":"ok"})

class GoalImageViewSet(viewsets.ModelViewSet):
    queryset=GoalImages.objects.all()
    serializer_class=GolaImageSerializer
    # parser_classes = (MultiPartParser, JSONParser)

    def get_queryset(self):
        queryset = GoalImages.objects.all()
    #     dist = self.request.GET.get('dist')
    #     if dist != None :
    #         queryset = Incident.objects.filter(entity=dist, is_approved=True)
    #     else:
    #         queryset = Incident.objects.filter(is_approved=True)
        return queryset

class CheckinImageViewSet(viewsets.ModelViewSet):
    queryset=CheckinImages.objects.all()
    serializer_class=CheckinImageSerializer
    # parser_classes = (MultiPartParser, JSONParser)

    def get_queryset(self):
        queryset = CheckinImages.objects.all()
    #     dist = self.request.GET.get('dist')
    #     if dist != None :
    #         queryset = Incident.objects.filter(entity=dist, is_approved=True)
    #     else:
    #         queryset = Incident.objects.filter(is_approved=True)
        return queryset
    

class RetrieveUserView(generics.RetrieveAPIView):
    queryset = CustomUser.objects.all()
    serializer_class = UserSerializer
    permission_classes = [IsAuthenticated]

    def get_object(self):
        return self.request.user


def userDetials(request):
    user_id = request.GET.get('user_id')
    user = CustomUser.objects.get(id=user_id)
    rogUser = RogUser.objects.filter(user=user)
    serializer = RogUserSerializer(rogUser, many=True)
    return JsonResponse(serializer.data, safe=False)

@api_view(['GET'])
@permission_classes((IsAuthenticated, ))
def DeleteAccount(request):
    usr = request.user;
    #print("user is" + usr)
    if(usr):
        #usr.delete()
        usr.email = usr.email + "_res" + str(uuid.uuid4())
        usr.save();
        AuthToken.objects.filter(user=usr).delete()
        return Response({"result":"user deleted"})
    return Response({"result":"user not found"})


def UserActionViewset(request):
    user_id = request.GET.get('user_id')
    location_id = request.GET.get('location_id')
    location = Location.objects.get(location_id=location_id)
    user = CustomUser.objects.get(id=user_id)
    action = Useractions.objects.filter(location=location, user=user)
    serializer = UseractionsSerializer(action, many=True)
    return JsonResponse(serializer.data, safe=False)


def UserMakeActionViewset(request):
    user_id = request.GET.get('user_id')
    location_id = request.GET.get('location_id')
    wanttogo = True if request.GET.get('wanttogo') == "true" else False
    like = True if request.GET.get('like') == "true" else False
    checkin = True if request.GET.get('checkin') == "true" else False
    location = Location.objects.get(location_id=location_id)
    user = CustomUser.objects.get(id=user_id)
    #action = Useractions.objects.filter(location__id=location_id, user__id=user_id)
    rec = Useractions.objects.filter(user=user, location=location)
    if(rec):
        obj = rec.update(wanttogo=wanttogo, like=like, checkin=checkin)
    else:
        obj, created = Useractions.objects.update_or_create(user=user, location=location, wanttogo=wanttogo, like=like, checkin=checkin)
    serializer = UseractionsSerializer(obj, many=False)
    return JsonResponse(serializer.data, safe=False)


def UserDestinations(request):
        user_id = request.GET.get('user_id')
        user = CustomUser.objects.get(id=user_id)
        #action = Useractions.objects.filter(location__id=location_id, user__id=user_id)
        rec = Useractions.objects.filter(user=user, wanttogo=True).order_by('order')
        serializer = UserDestinationSerializer(rec, many=True)
        return JsonResponse(serializer.data, safe=False)


def UpdateOrder(request):
    dir = request.GET.get('dir')
    user_action_id = int(request.GET.get('user_action_id'))
    order = int(request.GET.get('order'))
    aorder = int(request.GET.get('order'))
    oorder = int(request.GET.get('order'))
    if(user_action_id):
        #updated = Useractions.objects.filter(order__gte=order).update(order = F('order')+1)
        #res = Useractions.objects.filter(id=user_action_id).update(order=order)
        index = 0
        if dir == "up":
            for id in Useractions.objects.all().order_by('order').values_list('id', flat=True):
                print(id)
                print("----",user_action_id)
                if index == order :
                    index += 1
                    print("index increated .....")
                if user_action_id == id:
                    Useractions.objects.filter(id=id).update(order=order)
                    print("updated .....")
                    continue
                    
                Useractions.objects.filter(id=id).update(order=index)
                index += 1
        else :
            for id in Useractions.objects.all().order_by('order').values_list('id', flat=True):
                print(id)
                print("----",user_action_id)
                if index == order :
                    index -= 1
                    print("index increated .....")
                if user_action_id == id:
                    Useractions.objects.filter(id=id).update(order=order)
                    print("updated .....")
                    continue
                    
                Useractions.objects.filter(id=id).update(order=index)
                index += 1
        # for id in Useractions.objects.values_list('order', flat=True):
        #     aorder -= 1
        #     Useractions.objects.filter(order__lt=id).update(order=aorder)
        # res = Useractions.objects.filter(id=user_action_id).update(order=oorder)
        
        return JsonResponse(1, safe=False)
    else:
        return JsonResponse({}, safe=False)


def DeleteDestination(request):
    dest_id = int(request.GET.get('dest_id'))
    print("###### dest   ")
    print(dest_id)
    if(dest_id != None):
        Useractions.objects.filter(id=dest_id).delete()
        return JsonResponse({"success":1}, safe=False)
    else:
        return JsonResponse({"success":0}, safe=False)


def CustomAreaLocations(request):
    
    cat = request.GET.get('cat')
    name = request.GET.get('name')
    is_rog = request.GET.get('rog')
    grp = request.GET.get('grp')

    if(cat != None):
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), event_name__isnull=False, category=cat, event_name=name, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), event_name__isnull=False, category=cat, event_name=name)
        else:
            if grp:
                locs = Location.objects.filter(event_name__isnull=False, category=cat, event_name=name, group__contains=grp, location_name__contains='観光')
            else:
                locs = Location.objects.filter(event_name__isnull=False, category=cat, event_name=name, location_name__contains='観光')
    else:
        if is_rog:
            if grp:
                locs = Location.objects.filter(~Q(cp=0), event_name__isnull=False, event_name=name, group__contains=grp)
            else:
                locs = Location.objects.filter(~Q(cp=0), event_name__isnull=False, event_name=name)
        else:
            if grp:
                locs = Location.objects.filter(event_name__isnull=False, event_name=name, group__contains=grp, location_name__contains='観光')
            else:
                locs = Location.objects.filter(event_name__isnull=False, event_name=name, location_name__contains='観光')
    
    serializer = LocationSerializer(locs, many=True) 
    return JsonResponse(serializer.data, safe=False)


def CustomAreaNames(request):
    locs = Location.objects.filter(event_name__isnull=False).values('event_name').distinct()

    serializer = LocationEventNameSerializer(locs, many=True)
    return JsonResponse(serializer.data, safe=False)


class UserActivationView(APIView):
    def get(self, request, activation_token):
        try:
            user = CustomUser.objects.get(activation_token=activation_token, is_active=False)
            user.is_active = True
            user.activation_token = None
            user.save()
            return Response({"message": "アカウントが正常にアクティベートされました。"}, status=status.HTTP_200_OK)
        except CustomUser.DoesNotExist:
            return Response({"error": "無効なアクティベーショントークンです。"}, status=status.HTTP_400_BAD_REQUEST)

class ChangePasswordView(generics.UpdateAPIView):
    """
    An endpoint for changing password.
    """
    serializer_class = ChangePasswordSerializer
    model = CustomUser
    permission_classes = (IsAuthenticated,)

    def get_object(self, queryset=None):
        obj = self.request.user
        return obj

    def update(self, request, *args, **kwargs):
        self.object = self.get_object()
        serializer = self.get_serializer(data=request.data)

        if serializer.is_valid():
            # Check old password
            if not self.object.check_password(serializer.data.get("old_password")):
                return Response({"old_password": ["Wrong password."]}, status=status.HTTP_400_BAD_REQUEST)
            # set_password also hashes the password that the user will get
            self.object.set_password(serializer.data.get("new_password"))
            self.object.save()
            response = {
                'status': 'success',
                'code': status.HTTP_200_OK,
                'message': 'Password updated successfully',
                'data': []
            }

            return Response(response)

        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class TestActionViewSet(viewsets.ModelViewSet):
    serializer_class = TestSerialiser
    queryset = TestModel.objects.all()


def PrivacyView(request):
    return render(request, "rog/privacy.html")

class RegistrationView(APIView):
    def post(self, request):
        serializer = RegistrationSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

# Akira

class NewEvent2ViewSet(viewsets.ModelViewSet):
    queryset = NewEvent2.objects.all()
    serializer_class = NewEvent2Serializer
    permission_classes = [IsAuthenticated]

class NewEvent2ListView(generics.ListAPIView):
    queryset = NewEvent2.objects.all()
    serializer_class = NewEvent2Serializer
    permission_classes = [IsAuthenticated]

class NewEventViewSet(viewsets.ModelViewSet):
    queryset = NewEvent.objects.all()
    serializer_class = NewEventSerializer
    permission_classes = [IsAuthenticated]

class NewEventListView(generics.ListAPIView):
    queryset = NewEvent.objects.all()
    serializer_class = NewEventSerializer
    permission_classes = [IsAuthenticated]

class TeamViewSet(viewsets.ModelViewSet):
    serializer_class = TeamSerializer
    permission_classes = [permissions.IsAuthenticated, IsTeamOwner]

    def get_queryset(self):
        return Team.objects.filter(owner=self.request.user)

    def perform_create(self, serializer):
        with transaction.atomic():
            category = serializer.validated_data['category']
            category = NewCategory.objects.select_for_update().get(id=category.id)
            zekken_number = category.category_number
            category.category_number = F('category_number') + 1
            category.save()
            category.refresh_from_db()  # F() 式の結果を評価

            serializer.save(owner=self.request.user, zekken_number=zekken_number)


    def destroy(self, request, *args, **kwargs):
        team = self.get_object()
        if team.members.exists():
            return Response({"error": "チームにメンバーが残っているため削除できません。"}, status=status.HTTP_400_BAD_REQUEST)
        return super().destroy(request, *args, **kwargs)

    def update(self, request, *args, **kwargs):
        try:
            return super().update(request, *args, **kwargs)
        except Exception as e:
            return Response({"error": "更新に失敗しました。競合が発生した可能性があります。"}, status=status.HTTP_409_CONFLICT)

    @action(detail=True, methods=['post'])
    def copy(self, request, pk=None):
        original_team = self.get_object()
        with transaction.atomic():
            category = NewCategory.objects.select_for_update().get(id=original_team.category.id)
            new_zekken_number = category.category_number
            category.category_number = F('category_number') + 1
            category.save()
            category.refresh_from_db()  # F() 式の結果を評価

            new_team = Team.objects.create(
                zekken_number=new_zekken_number,
                team_name=f"{original_team.team_name} (コピー)",
                category=category,
                owner=request.user
            )
            for member in original_team.members.all():
                Member.objects.create(
                    team=new_team,
                    user=member.user
                )
        return Response(TeamSerializer(new_team).data, status=status.HTTP_201_CREATED)


class NewCategoryViewSet(viewsets.ModelViewSet):
    queryset = NewCategory.objects.all()
    serializer_class = NewCategorySerializer
    permission_classes = [IsAuthenticated]

class NewCategoryListView(generics.ListAPIView):
    queryset = NewCategory.objects.all()
    serializer_class = NewCategorySerializer
    permission_classes = [IsAuthenticated]

class CategoryViewSet(viewsets.ModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    permission_classes = [IsAuthenticated]

class CategoryListView(generics.ListAPIView):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    permission_classes = [IsAuthenticated]

'''
    def get(self, request):
        categories = Category.objects.all()
        data = []
        for category in categories:
            category_name = force_str(category.category_name)
            data.append({
                'category_name': category_name,
                # その他のフィールド
            })
        return Response(data)
'''

class EntryViewSet(viewsets.ModelViewSet):
    queryset = Entry.objects.all()
    serializer_class = EntrySerializer
    permission_classes = [permissions.IsAuthenticated]

    #def perform_create(self, serializer):
    #    team = Team.objects.get(owner=self.request.user)
    #    serializer.save(team=team)

    def get_queryset(self):
        user = self.request.user
       # ユーザーが所属するチームのIDを取得
        team_ids = Member.objects.filter(user=user).values_list('team_id', flat=True)
        # そのチームに関連するエントリーを取得
        return Entry.objects.filter(team__id__in=team_ids)

    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        try:
            serializer.is_valid(raise_exception=True)
            self.perform_create(serializer)
            headers = self.get_success_headers(serializer.data)
            return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
        except DRFValidationError as e:
            return Response({"error": str(e)}, status=status.HTTP_400_BAD_REQUEST)

        #except ValidationError as e:
        #    return Response({'error': str(e)}, status=status.HTTP_400_BAD_REQUEST)

    def perform_create(self, serializer):
        serializer.save(owner=self.request.user)

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        return Response(serializer.data)

    def destroy(self, request, *args, **kwargs):
        instance = self.get_object()
        self.perform_destroy(instance)
        return Response(status=status.HTTP_204_NO_CONTENT)

class MemberViewSet(viewsets.ModelViewSet):
    serializer_class = MemberSerializer
    permission_classes = [permissions.IsAuthenticated,IsTeamOwner]

    def get_queryset(self):
        team_id = self.kwargs['team_id']
        return Member.objects.filter(team_id=team_id)

    def create(self, request, *args, **kwargs):
        team = Team.objects.get(id=self.kwargs['team_id'])
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        try:
            self.perform_create(serializer)
        except DRFValidationError as e:
            return Response({"error": str(e)}, status=status.HTTP_400_BAD_REQUEST)
        #except ValidationError as e:
        #    return Response({"error": str(e)}, status=status.HTTP_400_BAD_REQUEST)
        except IntegrityError:
            return Response({"error": "このユーザーは既にチームのメンバーです。"}, status=status.HTTP_400_BAD_REQUEST)

        headers = self.get_success_headers(serializer.data)
        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)


    def perform_create(self, serializer):
        team = Team.objects.get(id=self.kwargs['team_id'])
        serializer.save(team=team)

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)

        if not instance.user.email.startswith('dummy_'):
            return Response({"error": "このユーザーの情報は更新できません。"}, status=status.HTTP_400_BAD_REQUEST)


        self.perform_update(serializer)

        if getattr(instance, '_prefetched_objects_cache', None):
            instance._prefetched_objects_cache = {}

        return Response(serializer.data)

    def perform_update(self, serializer):
        serializer.save()

    def get_object(self):
        queryset = self.get_queryset()
        member_id = self.kwargs['pk']
        obj = get_object_or_404(queryset, id=member_id)
        self.check_object_permissions(self.request, obj)
        return obj

class OwnerEntriesView(generics.ListAPIView):
    serializer_class = EntrySerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_queryset(self):
        user = self.request.user
        return Entry.objects.filter(owner=user)

class OwnerTeamsView(generics.ListAPIView):
    serializer_class = TeamSerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_queryset(self):
        user = self.request.user
        return Team.objects.filter(owner=user)

class OwnerMembersView(generics.ListAPIView):
    serializer_class = MemberSerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_queryset(self):
        user = self.request.user
        return Member.objects.filter(team__owner=user)

class MemberAddView(APIView):
    def post(self, request, team_id):
        logger.info(f"Received request to add member to team {team_id}")
        logger.debug(f"Request data: {request.data}")

        team = get_object_or_404(Team, id=team_id)
        logger.info(f"Found team: {team}")

        serializer = MemberSerializer(data=request.data)
        if serializer.is_valid():
            logger.info("Serializer is valid")
            try:
                member = serializer.save(team=team)
                logger.info(f"Member added successfully: {member}")
                return Response(serializer.data, status=status.HTTP_201_CREATED)
            except Exception as e:
                logger.error(f"Error saving member: {str(e)}")
                return Response({"detail": str(e)}, status=status.HTTP_400_BAD_REQUEST)
        else:
            logger.error(f"Serializer errors: {serializer.errors}")
            return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class TempUserViewSet(viewsets.ModelViewSet):
    queryset = TempUser.objects.all()
    serializer_class = TempUserSerializer
    permission_classes = [IsAuthenticated]

# CustomUserViewSetの修正
class CustomUserViewSet(viewsets.ModelViewSet):
    queryset = CustomUser.objects.all()
    serializer_class = CustomUserSerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        user = self.request.user
        if user.is_staff:
            return CustomUser.objects.all()
        return CustomUser.objects.filter(id=user.id)


class TeamMembersView(generics.ListAPIView):
    serializer_class = MemberSerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        team_id = self.kwargs['team_id']
        return Member.objects.filter(team_id=team_id)

# ユーザーのエントリーを取得するビュー
class UserEntriesView(generics.ListAPIView):
    serializer_class = EntrySerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        user = self.request.user
        return Entry.objects.filter(team__owner=user)

# イベントのカテゴリーを取得するビュー
class EventCategoriesView(generics.ListAPIView):
    serializer_class = CategorySerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        event_id = self.kwargs['event_id']
        return Category.objects.filter(entry__event_id=event_id).distinct()

class RegisterView(APIView):
    def post(self, request):
        serializer = TempUserSerializer(data=request.data)
        if serializer.is_valid():
            temp_user = serializer.save()
            verification_code = uuid.uuid4()
            temp_user.verification_code = verification_code
            temp_user.save()

            verification_url = request.build_absolute_uri(
                reverse('verify-email', kwargs={'verification_code': verification_code})
            )
            send_mail(
                'Verify your email',
                f'Click the link to verify your email: {verification_url}',
                settings.DEFAULT_FROM_EMAIL,
                [temp_user.email],
                fail_silently=False,
            )
            return Response({'message': 'Verification email sent'}, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

class VerifyEmailView(APIView):
    def get(self, request, verification_code):
        try:
            temp_user = TempUser.objects.get(verification_code=verification_code)
            if temp_user.is_valid():
                user_data = {
                    'email': temp_user.email,
                    'is_rogaining': temp_user.is_rogaining,
                    'zekken_number': temp_user.zekken_number,
                    'event_code': temp_user.event_code,
                    'team_name': temp_user.team_name,
                    'group': temp_user.group,
                    'firstname': temp_user.firstname,
                    'lastname': temp_user.lastname,
                    'date_of_birth': temp_user.date_of_birth,
                    'female': temp_user.female,
                }
                                        # CustomUserを作成
                user = CustomUser.objects.create_user(
                    email=user_data['email'],
                    password=temp_user.password,
                    **{k: v for k, v in user_data.items() if k != 'email'}
                )
                temp_user.delete()
                return Response({'message': 'Email verified and user created'}, status=status.HTTP_201_CREATED)

            else:
                return Response({'message': 'Verification link expired'}, status=status.HTTP_400_BAD_REQUEST)
        except TempUser.DoesNotExist:
            return Response({'message': 'Invalid verification code'}, status=status.HTTP_400_BAD_REQUEST)


class MemberUserDetailView(generics.RetrieveAPIView):
    serializer_class = MemberWithUserSerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        return Member.objects.select_related('user', 'team')

class TeamMembersWithUserView(generics.ListAPIView):
    serializer_class = MemberWithUserSerializer
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        team_id = self.kwargs['team_id']
        return Member.objects.filter(team_id=team_id).select_related('user', 'team')