class LoginView(views.APIView):

    def post(self, request):
        data = json.loads(request.body)
        if request.user.is_authenticated():
            return Response({
                'status': 'Unauthorized',
                'message': 'Already Logged In'
            }, status=status.HTTP_302_FOUND)
        email = data.get('email', None)
        password = data.get('password', None)
        remember_me = data.get('remember_me', None)
        user = authenticate(email=email, password=password)
        if user:
            login(request, user)
            serialized_data = UserSerializer(user)
            if remember_me is None:
                request.session.set_expiry(0)
            return Response(serialized_data.data)
        else:
            return Response({
                'status': 'Not authorized',
                'message': 'Invalid Login Details'
            }, status=status.HTTP_401_UNAUTHORIZED)


class LogoutView(views.APIView):

    def post(self, request):
        if request.user.is_authenticated():
            logout(request)
            return Response({
                'status': 'Anonymous',
                'message': 'Successfully Logged Out'
            }, status=status.HTTP_204_NO_CONTENT)
        return Response({
            'status': 'InvalidRequest',
            'message': 'User not logged In'
        }, status.HTTP_401_UNAUTHORIZED)


class DetailView(views.APIView):

    def get(self, request):
        if request.user.is_authenticated():
            return Response(UserSerializer(request.user).data)
        return Response({'status': 'Invalid Request', 'message': 'Login to View Details'},
                        status=status.HTTP_401_UNAUTHORIZED)


class UserRegistrationView(viewsets.ModelViewSet):
    lookup_field = 'email'
    queryset = User.objects.all()
    serializer_class = UserSerializer

    def get_permissions(self):
        if self.request.method in permissions.SAFE_METHODS:
            return (permissions.AllowAny(),)

        if self.request.method == 'POST':
            return (permissions.AllowAny(),)

        return (permissions.IsAuthenticated(),)

    def create(self, request):
        serializer = self.serializer_class(data=request.data)

        if serializer.is_valid():
            print serializer.validated_data
            User.objects.create_user(**serializer.validated_data)

            return Response(serializer.validated_data, status=status.HTTP_201_CREATED)

        return Response({
            'status': 'Bad request',
            'message': 'Account could not be created with received data.'
        }, status=status.HTTP_404_NOT_FOUND)