from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey
from sqlalchemy.sql import func
from app.database import Base

class SystemConfig(Base):
    __tablename__ = "system_config"
    __table_args__ = {'schema': 'aigcspace'}
    
    id = Column(Integer, primary_key=True, index=True)
    config_key = Column(String(100), unique=True, nullable=False, index=True)
    config_value = Column(Text, nullable=False)
    config_type = Column(String(20), nullable=False)
    category = Column(String(50), nullable=False, index=True)
    description = Column(String(500))
    updated_by = Column(Integer, ForeignKey("aigcspace.admin_users.id"))
    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
    created_at = Column(DateTime, default=func.now())

class ConfigHistory(Base):
    __tablename__ = "config_history"
    __table_args__ = {'schema': 'aigcspace'}
    
    id = Column(Integer, primary_key=True, index=True)
    config_key = Column(String(100), nullable=False, index=True)
    old_value = Column(Text)
    new_value = Column(Text, nullable=False)
    updated_by = Column(Integer, ForeignKey("aigcspace.admin_users.id"))
    updated_at = Column(DateTime, default=func.now(), index=True)