from rest_framework import serializers
from .models import *
from django.contrib.auth.models import User


class UserSerializer(serializers.ModelSerializer):
    password = serializers.CharField(write_only=True)

    class Meta:
        model = User
        fields = ["id", "username", "password", "email"]

    def validate_email(self, value):
        if User.objects.filter(email=value).exists():
            raise serializers.ValidationError("Cette adresse e-mail est déjà utilisée.")
        return value

    def create(self, validated_data):
        password = validated_data.pop("password")
        user = User(**validated_data)
        user.set_password(password)
        user.save()
        return user


class ProductSerializer(serializers.ModelSerializer):
    user = serializers.PrimaryKeyRelatedField(read_only=True)
    is_stock_low = serializers.BooleanField(read_only=True)

    class Meta:
        model = Product
        fields = ["id", "name", "description", "quantity", "creation_date", "modification_date", "user","stock_limit","alert_enabled","alert_message","is_stock_low"]