import json
from django.shortcuts import render
from rest_framework.views import APIView
from rest_framework.response import Response
from django.http import HttpResponse
from django.template.response import TemplateResponse
from rest_framework import status, permissions, exceptions
from django.contrib.auth import authenticate, login
from django.views.decorators.csrf import csrf_exempt
from .serializers import AuthFormSerializer
from rest_framework.authtoken.models import Token
from datetime import datetime
from rest_framework.renderers import TemplateHTMLRenderer
from test_django.authenticators import TokenExpireAuth
from rest_framework.status import (
    HTTP_400_BAD_REQUEST,
    HTTP_404_NOT_FOUND,
    HTTP_200_OK,
    HTTP_201_CREATED,
)
import ipdb


class AuthView(APIView):
    permission_classes = (permissions.AllowAny,)

    renderer_classes = [TemplateHTMLRenderer]

    @csrf_exempt
    def get(self, request):
        # response = TemplateResponse(request, 'login.html', {})

        return render(request, 'login.html', {})

    @csrf_exempt
    def post(self, request):

        serializer = AuthFormSerializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        data = serializer.data
        username = data.get('username')
        password = data.get('password')

        if username is None or password is None:
            return Response({'error': 'Please provide both username and password'},
                            status=HTTP_400_BAD_REQUEST, template_name='login.html')
        user = authenticate(username=username, password=password)

        if not user:
            return Response({'error': 'Invalid Credentials'},
                            status=HTTP_404_NOT_FOUND, template_name='login.html')
        self.token, _ = Token.objects.get_or_create(user=user)
        user_token = Token.objects.get(user_id = user.pk)


        if (datetime.now() - user_token.created.replace(tzinfo=None)).days > 10:
            Token.objects.update(user_id=user.pk, key=Token.generate_key(user.pk), created = datetime.now())
        print('done')
        # ipdb.set_trace()
        context = {'token': self.token.key}
        # return Response(, status=HTTP_201_CREATED, template_name='')
        return HttpResponse(json.dumps(context), content_type="application/json")