from django.contrib.auth import authenticate, login, logout
from django.shortcuts import render, redirect
from yaml import serialize
from api.serializer import MyTokenObtainPairSerializer
from api.views import MyTokenObtainPairView
import medinf.settings
import logging
import medinf.ldap_backend


def navlogin(request):
    log = logging.getLogger("medinf")
    logout(request)
    error = ""
    if request.POST:
        username = request.POST.get("username", "?")
        password = request.POST.get("password", "?")

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                return redirect(medinf.settings.LOGIN_REDIRECT_URL)
            else:
                log.info("Inactive user {} tried to login".format(username))
                error = "Ihre Benutzerkennung wurde deaktiviert."
        else:
            log.info("Login failed for {}".format(username))
            error = "Benutzername oder Kennwort falsch."
    context = {"error": error}
    return render(request, "index.html", context)


################ New REST Token Auth #########################################

from rest_framework_simplejwt.tokens import RefreshToken
from rest_framework.views import APIView
from rest_framework.response import Response
from django.contrib.auth import authenticate


class AuthenticateView(APIView):
    def post(self, request):
        username = request.data.get("username")
        password = request.data.get("password")

        
        user = authenticate(request, username=username, password=password)
        if user is not None:
            login(request, user)    #login the user in the backend 
            # refresh = RefreshToken.for_user(user)
            serializer = MyTokenObtainPairSerializer(data={"username":username, "password":password})
            serializer.is_valid(raise_exception=True)
            
            token = serializer.validated_data
            
            return Response(token)
      
        return Response({"error": "Invalid credentials"}, status=400)