"""System-level settings (key-value store)."""

import uuid
from datetime import datetime

from sqlalchemy import DateTime, String, func
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class SystemSetting(Base):
    """Key-value system settings."""

    __tablename__ = "system_settings"

    key: Mapped[str] = mapped_column(String(100), primary_key=True)
    value: Mapped[dict] = mapped_column(JSONB, nullable=False, default={})
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())