from rest_framework import serializers
from .models import Article, Comment, Like, Rating, Favorite
from users.serializers import UserSerializer
from regions.serializers import RegionSerializer


class ArticleSerializer(serializers.ModelSerializer):
    author = UserSerializer(read_only=True)
    region = RegionSerializer(read_only=True)
    region_id = serializers.PrimaryKeyRelatedField(
        queryset='regions.Region.objects.all()',
        source='region',
        write_only=True,
        required=False
    )
    
    class Meta:
        model = Article
        fields = [
            'id', 'title', 'content', 'region', 'region_id', 'content_type',
            'author', 'moderator_status', 'ai_status', 'publish_status',
            'created_at', 'updated_at'
        ]
        read_only_fields = ['author', 'moderator_status', 'ai_status', 'publish_status', 'created_at', 'updated_at']


class CommentSerializer(serializers.ModelSerializer):
    author = UserSerializer(read_only=True)
    
    class Meta:
        model = Comment
        fields = [
            'id', 'content', 'article', 'service', 'author',
            'ai_status', 'is_visible', 'created_at'
        ]
        read_only_fields = ['author', 'ai_status', 'is_visible', 'created_at']


class LikeSerializer(serializers.ModelSerializer):
    user = UserSerializer(read_only=True)
    
    class Meta:
        model = Like
        fields = ['id', 'user', 'article', 'service', 'created_at']
        read_only_fields = ['user', 'created_at']


class RatingSerializer(serializers.ModelSerializer):
    user = UserSerializer(read_only=True)
    region = RegionSerializer(read_only=True)
    
    class Meta:
        model = Rating
        fields = ['id', 'user', 'region', 'service', 'score', 'comment', 'created_at']
        read_only_fields = ['user', 'created_at']


class FavoriteSerializer(serializers.ModelSerializer):
    user = UserSerializer(read_only=True)
    region = RegionSerializer(read_only=True)
    
    class Meta:
        model = Favorite
        fields = ['id', 'user', 'region', 'service', 'created_at']
        read_only_fields = ['user', 'created_at']