from datetime import datetime

from sqlalchemy import Boolean, DateTime, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


class SystemConfig(Base):
    __tablename__ = "system_configs"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    config_key: Mapped[str] = mapped_column(String(100), nullable=False, unique=True, index=True)
    category: Mapped[str] = mapped_column(String(50), nullable=False, index=True)
    title: Mapped[str] = mapped_column(String(200), nullable=False)
    config_json: Mapped[str] = mapped_column(Text, nullable=False, default="{}")
    description: Mapped[str | None] = mapped_column(Text)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, index=True)
    sort_order: Mapped[int] = mapped_column(Integer, default=0)
    updated_by: Mapped[int | None] = mapped_column(Integer)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())

    def __repr__(self) -> str:
        return f"<SystemConfig {self.config_key}>"