from __future__ import annotations

from datetime import datetime
from typing import Optional

from sqlalchemy import DateTime, String, Text, Index
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.sql import func

from .database import Base


class AppSetting(Base):
    __tablename__ = "app_settings"
    __table_args__ = (
        Index("idx_app_settings_updated_at", "updated_at"),
    )

    key: Mapped[str] = mapped_column(String(100), primary_key=True)
    value: Mapped[Optional[str]] = mapped_column(Text)

    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now())