from datetime import datetime

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

from app.database import Base

USER_ROLE_ADMIN = "admin"
USER_ROLE_MONITOR = "monitor"
USER_ROLES = frozenset({USER_ROLE_ADMIN, USER_ROLE_MONITOR})


class User(Base):
    __tablename__ = "sac_users"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    username: Mapped[str] = mapped_column(String(64), unique=True, index=True)
    password_hash: Mapped[str] = mapped_column(String(128))
    role: Mapped[str] = mapped_column(String(16), default=USER_ROLE_MONITOR)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())