from rest_framework import serializers
from .models import Product, Review

class ReviewSerializer(serializers.ModelSerializer):
    user = serializers.ReadOnlyField(source='user.username')
    
    class Meta:
        model = Review
        fields = ['id', 'user', 'rating', 'comment', 'created_at', 'product']
        read_only_fields = ['created_at']

class ProductSerializer(serializers.ModelSerializer):
    average_rating = serializers.FloatField(read_only=True)
    reviews = ReviewSerializer(many=True, read_only=True)
    
    class Meta:
        model = Product
        fields = ['id', 'name', 'description', 'price', 'stock', 'category',
                 'featured', 'image', 'created_at', 'average_rating', 'reviews']
        read_only_fields = ['created_at']