from rest_framework import serializers
from .models import User


class UserSerializer(serializers.ModelSerializer):
    """Serializer for User model (basic info)."""

    class Meta:
        model = User
        fields = ('id', 'username', 'email', 'first_name', 'last_name', 'avatar', 'role', 'status')
        read_only_fields = ('id', 'role', 'status')


class UserDetailSerializer(serializers.ModelSerializer):
    """Detailed serializer for User model."""

    class Meta:
        model = User
        fields = '__all__'
        read_only_fields = ('id', 'date_joined', 'last_login')


class UserUpdateSerializer(serializers.ModelSerializer):
    """Serializer for updating user profile."""

    class Meta:
        model = User
        fields = ('first_name', 'last_name', 'avatar')


class UserStatsSerializer(serializers.Serializer):
    """Serializer for user statistics."""
    articles_count = serializers.IntegerField()
    services_count = serializers.IntegerField()
    comments_count = serializers.IntegerField()
    likes_count = serializers.IntegerField()
    favorites_count = serializers.IntegerField()
    ratings_count = serializers.IntegerField()