from sqlalchemy import Column, Integer, String, Text, Boolean, DateTime, func

from app.core.database import Base


class AuditRule(Base):
    __tablename__ = "audit_rules"

    id = Column(Integer, primary_key=True, autoincrement=True)
    code = Column(String(50), nullable=True, unique=True, comment="规则编码，如 MYSQL-DDL-001")
    name = Column(String(100), nullable=False, unique=True)
    description = Column(Text, nullable=True)
    rule_type = Column(String(50), nullable=False)  # syntax / performance / safety / naming / DDL / DML
    severity = Column(String(20), default="warning")  # error / warning / info
    db_type = Column(String(20), default="mysql")  # mysql / postgres / redis / all
    pattern = Column(Text, nullable=True)  # regex or keyword pattern
    value = Column(String(255), nullable=True)  # 规则参数值，如 DDLMaxKeyParts=8 → value="8"
    config_json = Column(Text, nullable=True, comment="规则配置JSON，如 {\"max_index\":20,\"enabled\":true}")
    is_enabled = Column(Boolean, default=True)
    message = Column(String(500), nullable=False)  # human-readable message
    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())