from rest_framework import serializers

from apps.books.models import Book


class BookSerializer(serializers.ModelSerializer):
    """Serialize Book data."""

    class Meta:
        model = Book
        fields = [
            "id",
            "title",
            "author",
            "total_pages",
            "cover_image",
            "created_at",
            "updated_at",
        ]
        read_only_fields = ["id", "created_at", "updated_at"]


class BookListSerializer(serializers.ModelSerializer):
    """Lightweight serializer for list views (excludes heavy fields)."""

    class Meta:
        model = Book
        fields = ["id", "title", "author", "total_pages", "cover_image"]