from django.contrib.auth import get_user_model
from django.contrib import auth
from rest_framework.views import APIView
from rest_framework.renderers import JSONRenderer
from rest_framework.response import Response

from access.serializers import UserInitSerializer


class TeacherListView(APIView):
    renderer_classes = (JSONRenderer,)
    status_code = 200

    def get(self, request):
        return Response([teacher.full_name() for teacher in get_user_model().objects.filter(
            in_role='T',
            is_active=True,
            reg_status=4,
        )], self.status_code)


class CheckUserView(APIView):
    renderer_classes = (JSONRenderer,)
    status_code = 200

    def get(self, request):
        if request.user.is_authenticated() and (request.user.in_role in ['M', 'S', 'S2', 'A'] or request.user.is_admin):
            return Response(True, status=self.status_code)
        return Response(False, status=self.status_code)


class LoginView(APIView):
    renderer_classes = (JSONRenderer,)
    status_code = 200

    def get(self, request):
        if not request.user.is_authenticated():
            user = auth.authenticate(email=request.JSON.get('email'), password=request.JSON.get('password'))
            return Response(UserInitSerializer(user).data, status=self.status_code)
        return Response(status=403)


class LogoutView(APIView):
    renderer_classes = (JSONRenderer,)
    status_code = 204

    def get(self, request):
        return Response(False, status=self.status_code)