from rest_framework import viewsets, permissions, authentication
from rest_framework.response import Response
from jobposting.models import JobOffer, CompanyLogo, Skill
from core.models import MyUser, AnonymousUserData
from rest_framework import status

from oauth2_provider.contrib.rest_framework import TokenHasReadWriteScope, OAuth2Authentication
from .auth import OAuth2ClientCredentialAuthentication
from rest_framework.views import APIView

from django.conf import settings



from jobposting.serializers import (
    JobOfferSerializer,
    MyUserSerializer,
    CompanyLogoSerializer,
    SkillSerializer,
    SlimJobOffersSerializer
)


class MyUserViewSet(viewsets.ModelViewSet):
    # authentication_classes = [OAuth2Authentication, authentication.SessionAuthentication]
    # permission_classes = [permissions.IsAuthenticated|TokenHasReadWriteScope]
    queryset = MyUser.objects.all()
    serializer_class = MyUserSerializer
    required_scope  = ['main']
    authentication_classes = []     ### test only - to be changed 
    permission_classes = []         ### 
    # # permission_classes = [permissions.IsAuthenticated]


class JobOfferViewSet(viewsets.ModelViewSet):
    # authentication_classes = [OAuth2Authentication, authentication.SessionAuthentication]
    # permission_classes = [permissions.IsAuthenticated|TokenHasReadWriteScope] # test only
    queryset = JobOffer.objects.all()
    serializer_class = JobOfferSerializer
    required_scope  = ['main']
    authentication_classes = []
    permission_classes = []
    # # permission_classes = [permissions.IsAuthenticatedOrReadOnly]
    
    def perform_create(self, serializer):
        if self.request.user.is_authenticated:
            serializer.save(created_by=self.request.user)
        else:
            # Pobieranie danych z formularza
            first_name = self.request.data.get('first_name')
            last_name = self.request.data.get('last_name')
            contact_email = self.request.data.get('contact_email')

            # Tworzenie rekordu AnonymousUserData
            anonymous_user_data = AnonymousUserData.objects.create(
                first_name=first_name, 
                last_name=last_name, 
                contact_email=contact_email
            )

            serializer.save(anonymous_user_data=anonymous_user_data)


class CompanyLogoViewSet(viewsets.ModelViewSet):
    # authentication_classes = [OAuth2Authentication, authentication.SessionAuthentication]
    # permission_classes = [permissions.IsAuthenticated|TokenHasReadWriteScope]
    queryset = CompanyLogo.objects.all()
    serializer_class = CompanyLogoSerializer
    required_scope  = ['main']
    authentication_classes = []
    permission_classes = []


class JobOfferListView(APIView):
    authentication_classes = []
    permission_classes = []

    def get(self, request, format=None):
        start = request.query_params.get('start', 0)
        end = request.query_params.get('end', 12)
        job_offers = JobOffer.objects.all()[start:end]
        serializer = SlimJobOffersSerializer(job_offers, many=True)
        return Response(serializer.data)
    

class SkillViewset(viewsets.ModelViewSet):
    # authentication_classes = [OAuth2Authentication, authentication.SessionAuthentication]
    # permission_classes = [permissions.IsAuthenticated|TokenHasReadWriteScope]
    queryset = Skill.objects.all()
    serializer_class = SkillSerializer
    required_scope  = ['main']
    authentication_classes = []
    permission_classes = []
    

class SkillMainView(APIView):
    authentication_classes = []
    permission_classes = []

    def get_object(self, pk):
        try:
            return Skill.objects.get(pk=pk)
        except Skill.DoesNotExist:
            return Response({'error': 'Not Found'}, status=status.HTTP_404_NOT_FOUND)
        
    def get(self, request, pk=None, format=None):
        if pk:
            skill = self.get_object(pk)
            serializer = SkillSerializer(skill)
        else:
            skill = Skill.objects.all()
            serializer = SkillSerializer(skill, many=True)
        return Response(serializer.data)
    
    def post(self, request, format=None):
        serializer = SkillSerializer(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)
    
    def put(self, request, pk, format=None):
        skill = self.get_object(pk)
        serializer = SkillSerializer(skill, data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def delete(self, request, pk, format=None):
        skill = self.get_object(pk)
        skill.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)
    

class JobOfferDetailView(APIView):
    authentication_classes = []
    permission_classes = []

    def get_object(self, pk):
        try:
            return JobOffer.objects.get(pk=pk)
        except JobOffer.DoesNotExist:
            return Response({'error': 'Not Found'}, status=status.HTTP_404_NOT_FOUND)

    def get(self, request, pk, format=None):
        job_listing = self.get_object(pk)
        serializer = JobOfferSerializer(job_listing,)
        return Response(serializer.data) 

    def put(self, request, pk, format=None):
        job_offer = self.get_object(pk)
        serializer = JobOfferSerializer(job_offer, data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def post(self, request, format=None):
        serializer = JobOfferSerializer(data=request.data)
        if serializer.is_valid():
            if request.user.is_authenticated:
                serializer.save(created_by=request.user)
            else:
                # Pobieranie danych z formularza
                first_name = request.data.get('first_name')
                last_name = request.data.get('last_name')
                contact_email = request.data.get('contact_email')

                # Tworzenie rekordu AnonymousUserData
                anonymous_user_data = AnonymousUserData.objects.create(
                    first_name=first_name, 
                    last_name=last_name, 
                    contact_email=contact_email
                )

                serializer.save(anonymous_user_data=anonymous_user_data)
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
    
    def delete(self, request, pk, format=None):
        job_listing = self.get_object(pk)
        job_listing.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)