"""
历史记录基类
"""
from datetime import datetime
from app.utils.timezone import beijing_now_naive
from sqlalchemy import Column, Integer, String, DateTime
from app.database import Base


class HistoryBase(Base):
    """主表基类：提供 id、created_at、updated_at 等通用字段"""
    __abstract__ = True

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键ID")
    created_at = Column(DateTime, default=beijing_now_naive, comment="创建时间")
    updated_at = Column(DateTime, default=beijing_now_naive, onupdate=beijing_now_naive, comment="更新时间")


class HistoryRecord(Base):
    """历史记录基类"""
    __abstract__ = True
    
    # 原表所有字段的副本
    his_created_at = Column(DateTime, default=beijing_now_naive, comment="历史记录创建时间")
    his_operation = Column(String(10), nullable=False, comment="操作类型: INSERT/UPDATE/DELETE/RENEW")