"""截图的 OCR / AI 元信息。与 screenshot 1:1。"""
from __future__ import annotations

from sqlalchemy import ForeignKey, Integer, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.db import Base


class ScreenshotMeta(Base):
    """OCR 文本 + AI 结构化结果。"""

    __tablename__ = "screenshot_meta"

    screenshot_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("screenshots.id", ondelete="CASCADE"),
        primary_key=True,
    )

    ocr_text: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_title: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_summary: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_suggestion: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_raw_json: Mapped[str | None] = mapped_column(Text, nullable=True)  # 完整原始 JSON

    screenshot = relationship("Screenshot", back_populates="meta")