from rest_framework import serializers

from .models import Bookmark, Highlight, ReadingProgress


class BookmarkSerializer(serializers.ModelSerializer[Bookmark]):
    class Meta:
        model = Bookmark
        fields = ["id", "document", "page", "label", "created_at"]
        read_only_fields = ["id", "created_at"]


class HighlightSerializer(serializers.ModelSerializer[Highlight]):
    class Meta:
        model = Highlight
        fields = ["id", "document", "page", "color", "text", "note", "created_at"]
        read_only_fields = ["id", "created_at"]


class ReadingProgressSerializer(serializers.ModelSerializer[ReadingProgress]):
    class Meta:
        model = ReadingProgress
        fields = ["id", "document", "current_page", "total_pages", "percentage", "last_read_at"]
        read_only_fields = ["id", "percentage", "last_read_at"]


class ReadingProgressUpdateSerializer(serializers.ModelSerializer[ReadingProgress]):
    class Meta:
        model = ReadingProgress
        fields = ["current_page", "total_pages"]

    def validate_current_page(self, value: int) -> int:
        if value < 1:
            raise serializers.ValidationError("Page must be at least 1.")
        return value