from __future__ import annotations

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

from app.db.base import Base
from app.models.mixins import TimestampMixin

BIGINT_PK = BigInteger().with_variant(Integer, "sqlite")


class Department(TimestampMixin, Base):
    """科室模型：使用用户端确定的 department 表字段。"""

    __tablename__ = "department"

    id: Mapped[int] = mapped_column(BIGINT_PK, primary_key=True, autoincrement=True, comment="科室ID")
    name: Mapped[str] = mapped_column(String(100), nullable=False, comment="科室名称")
    category: Mapped[str] = mapped_column(String(50), nullable=False, comment="科室分类")
    institution_id: Mapped[int] = mapped_column(BigInteger, nullable=False, index=True, comment="所属机构ID")

    __table_args__ = {"comment": "科室表"}