from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework import viewsets
from rest_framework.authentication import TokenAuthentication
from rest_framework import filters
from rest_framework.authtoken.views import ObtainAuthToken
from rest_framework.settings import api_settings

from profiles_api import serializers
from profiles_api import models
from profiles_api import permissions

class HelloApiView(APIView):
    """Test API View"""
    serializer_class = serializers.HelloSerializer

    def get(self, request, format=None):
        """Return a list of APIView features"""
        an_apiview = [
            'Uses HTTP methods as function (get, post, patch, put, delete)',
            'Is similar to a traditional Django View',
            'Gives you the most control over you application login',
            'Is mapped manually to urls',
        ]

        return Response({'message':"Hello!", 'an_apiview':an_apiview})

    def post(self, request):
        """Create a hello meesage with our name"""
        serializer = self.serializer_class(data=request.data)

        if serializer.is_valid():
            name = serializer.validated_data.get('name')
            message = f'Hello {name}'
            return Response({'message': message})
        else:
            return Response(
                serializer.errors,
                status=status.HTTP_400_BAD_REQUEST
            )

    def put(self, request, pk=None):
        """Handle updating an object"""
        return Response({'methods':'PUT'})

    def patch(self, request, pk=None):
        """Handle a partial update of an object"""
        return Response({'methods':'PATCH'})

    def delete(self, request, pk=None):
        """delete an object"""
        return Response({'methods':'DELETE'})


class HelloViewSet(viewsets.ViewSet):
    """Test API Viewsets"""
    serializer_class = serializers.HelloSerializer


    def list(self, request):
        """return hello message"""
        a_viewset = [
            'Uses actions (list, create, retrieve, update, partial update)',
            'Automatically maps to URLs using routers',
            'Provides more functionality with less code',
        ]

        return Response({'message':'Hello', 'a_viewset':a_viewset})

    def create(self, request):
        """Create a new hello message"""
        serializer = self.serializer_class(data=request.data)

        if serializer.is_valid():
            name = serializer.validated_data.get('name')
            message = f'Hello {name}!'
            return Response({'message':message})
        else:
            return Response(
                serializer.errors,
                status=status.HTTP_400_BAD_REQUEST
            )

    def retrieve(self, request, pk=None):
        """Handle getting an object by its ID"""
        return Response({'http_method':'GET'})

    def update(self, request, pk=None):
        """Handle updating an object"""
        return Response({'http_method':'PUT'})

    def partial_update(self, request, pk=None):
        """Handle updating part of an object"""
        return Response({'http_method':'PATCH'})

    def destroy(self, request, pk=None):
        """Handle removing an object"""
        return Response({'http_method':'DELETE'})

class UserModelViewSet(viewsets.ModelViewSet):
    """Handle creating and updating profiles"""
    serializer_class = serializers.UserProfileSerializer
    queryset = models.UserProfile.objects.all()
    authentication_classes = (TokenAuthentication,)
    permission_classes = (permissions.UpdateOwnProfile,)
    filter_backends = (filters.SearchFilter,)
    search_fields = ('name','email',)

class UserLoginApiView(ObtainAuthToken):
    """handle creating user authentication tokens"""
    renderer_classes = api_settings.DEFAULT_RENDERER_CLASSES
