from django.contrib.auth import get_user_model
from rest_framework import generics, permissions, status
from rest_framework.response import Response
from rest_framework.views import APIView

from .serializers import ChangePasswordSerializer, RegisterSerializer, UserSerializer

UserModel = get_user_model()


class RegisterView(generics.CreateAPIView):
    """Create a new user account."""
    queryset = UserModel.objects.all()
    serializer_class = RegisterSerializer
    permission_classes = [permissions.AllowAny]


class UserDetailView(generics.RetrieveUpdateAPIView):
    """Get or update the authenticated user's profile."""
    serializer_class = UserSerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_object(self):
        return self.request.user


class ChangePasswordView(APIView):
    """Change the authenticated user's password."""
    permission_classes = [permissions.IsAuthenticated]

    def post(self, request):
        serializer = ChangePasswordSerializer(data=request.data, context={"request": request})
        serializer.is_valid(raise_exception=True)
        request.user.set_password(serializer.validated_data["new_password"])
        request.user.save()
        return Response({"detail": "Password changed successfully."}, status=status.HTTP_200_OK)