from rest_framework import serializers
from django.contrib.auth.models import User
from rest_framework_simplejwt.tokens import RefreshToken


class UserLoginSerializer(serializers.Serializer):
    username = serializers.CharField()
    password = serializers.CharField(write_only=True)

    def validate(self, data):
        from django.contrib.auth import authenticate

        user = authenticate(username=data["username"], password=data["password"])
        if not user:
            raise serializers.ValidationError("Неверный логин или пароль")

        refresh = RefreshToken.for_user(user)

        return {
            "username": user.username,
            "access": str(refresh.access_token),
            "refresh": str(refresh)
        }