"""
系统配置数据模型
"""

from sqlalchemy import Column, String, DateTime, Index
from sqlalchemy.dialects.postgresql import UUID, JSONB
from sqlalchemy.sql import func
import uuid

from ..core.database import Base


class SystemConfig(Base):
    """系统配置表模型"""
    
    __tablename__ = "system_config"
    
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    config_key = Column(String(100), unique=True, nullable=False, comment="配置键")
    config_value = Column(JSONB, nullable=False, comment="配置值")
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), comment="更新时间")
    
    # 索引
    __table_args__ = (
        Index('idx_system_config_key', 'config_key'),
        Index('idx_system_config_updated_at', 'updated_at'),
    )
    
    def __repr__(self):
        return f"<SystemConfig(key={self.config_key})>"