from pydantic import BaseModel


class UpdateBookRequest(BaseModel):
    title: str
    subtitle: str | None = None


class ExportPdfRequest(BaseModel):
    book_id: str


class SetChapterStoryOrderRequest(BaseModel):
    """按顺序绑定本章节要收录的 stories（覆盖原有 chapter_story_links）。"""

    story_ids: list[str]