"""
系统配置历史记录模型（与 system_config 镜像 + his 字段）
"""
from sqlalchemy import Column, Integer, String, DateTime, SmallInteger, Enum
from app.database import Base
from app.utils.timezone import beijing_now


class SystemConfigHis(Base):
    """系统配置表历史记录（与 system_config 镜像）"""
    __tablename__ = "system_config_his"

    id = Column(Integer, primary_key=True, comment="原表主键ID")
    config_key = Column(String(100), nullable=False, index=True, comment="配置键名")
    config_value = Column(String(500), nullable=False, comment="配置值")
    config_type = Column(Enum('int', 'string', 'bool', 'json'), default='string', comment="配置值类型")
    app_name = Column(String(100), default='backend-admin', comment="所属应用")
    description = Column(String(255), comment="配置描述")
    is_system = Column(SmallInteger, default=1, comment="是否为系统配置：1-是，0-否")
    is_editable = Column(SmallInteger, default=1, comment="是否可编辑：1-是，0-否")
    is_deleted = Column(SmallInteger, default=0, comment="是否删除：0-否，1-是")
    created_at = Column(DateTime, comment="创建时间")
    updated_at = Column(DateTime, comment="更新时间")
    his_created_at = Column(DateTime, primary_key=True, default=beijing_now, comment="历史记录创建时间")
    his_operation = Column(String(10), nullable=False, comment="操作类型：INSERT/UPDATE/DELETE")