from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework_simplejwt.tokens import RefreshToken
from django.contrib.auth import authenticate
from .serializers import UserSerializer, LoginSerializer
from rest_framework.permissions import AllowAny

class SignUpView(APIView):
    permission_classes = [AllowAny] 
    """
    User sign-up view
    """
    def post(self, request):
        serializer = UserSerializer(data=request.data)
        if serializer.is_valid():
            user = serializer.save()
            # Generate tokens for the new user
            refresh = RefreshToken.for_user(user)
            return Response({
                "message": "User created successfully",
                "refresh": str(refresh),
                "access": str(refresh.access_token),
            }, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class SignInView(APIView):
    permission_classes = [AllowAny] 
    """
    User sign-in view
    """
    def post(self, request):
        serializer = LoginSerializer(data=request.data)
        if serializer.is_valid():
            email = serializer.validated_data['email']
            password = serializer.validated_data['password']
            user = authenticate(email=email, password=password)
            if user:
                refresh = RefreshToken.for_user(user)
                return Response({
                    "refresh": str(refresh),
                    "access": str(refresh.access_token),
                }, status=status.HTTP_200_OK)
            return Response({"error": "Invalid credentials"}, status=status.HTTP_401_UNAUTHORIZED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)