"""超期预警 数据模型（批3：每日扫描 job 落库，open→resolved 生命周期）"""

from sqlalchemy import Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.core.base_model import MappedBase, ModelMixin, UserMixin


class AlertModel(ModelMixin, UserMixin, MappedBase):
    """超期预警。

    alert_type 三类：tree_undecided 单株多年未决策 / pollen_expiry 花粉批次过期 /
    seed_lot_expiry 种子批超期。生成侧为每日定时 job，直接 db.add（不经 CRUDBase，
    避免自审计噪声）；created_id 记录处理人，job 自动生成时为空。
    """

    __tablename__ = "bre_alert"

    alert_type: Mapped[str] = mapped_column(
        String(32), index=True, nullable=False,
        comment="预警类型(tree_undecided/pollen_expiry/seed_lot_expiry)",
    )
    entity_type: Mapped[str] = mapped_column(String(64), nullable=False, comment="实体类型(业务表名)")
    entity_id: Mapped[int] = mapped_column(Integer, index=True, nullable=False, comment="实体ID")
    message: Mapped[str | None] = mapped_column(Text, nullable=True, comment="预警内容", default=None)
    status: Mapped[str] = mapped_column(
        String(16), nullable=False, default="open", comment="状态(open未处理/resolved已处理)"
    )