from rest_framework import serializers
from django.contrib.auth import get_user_model

from system.comments.models import Comment

User = get_user_model()


class AuthorSerializer(serializers.ModelSerializer):
    following = serializers.SerializerMethodField()

    class Meta:
        model = User
        fields = ('username', 'bio', 'image', 'following')
        ref_name = 'GoodsAuthorSerializer'  # Указываем уникальное имя для этого сериализатора

    def get_following(self, obj):
        user = self.context.get('request').user
        if user.is_authenticated:
            return obj.followers.filter(pk=user.id).exists()
        return False


class CommentSerializer(serializers.ModelSerializer):
    author = serializers.SerializerMethodField()
    createdAt = serializers.DateTimeField(source='created', format='%Y-%m-%dT%H:%M:%S.%fZ', required=False)
    updatedAt = serializers.DateTimeField(source='updated', format='%Y-%m-%dT%H:%M:%S.%fZ', required=False)
    body = serializers.CharField(source='content', required=True)


    class Meta:
        model = Comment
        fields = ['id', 'createdAt', 'updatedAt', 'body', 'author']


    def get_author(self, obj):
        request = self.context.get('request')
        serializer = AuthorSerializer(obj.author, context={'request': request})
        return serializer.data

    def create(self, validated_data):
        comment = Comment(
            **validated_data,
            author=self.context['request'].user,
            article=self.context['article']
        )
        comment.save()
        return comment