from __future__ import annotations

from datetime import datetime

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

from ..core.db import Base


class Alert(Base):
    __tablename__ = "alerts"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    severity: Mapped[str] = mapped_column(String(16), nullable=False, default="info")  # info|warning|error|critical
    category: Mapped[str] = mapped_column(String(32), nullable=False, default="system")  # firmware|backup|device|security|system
    source: Mapped[str | None] = mapped_column(String(64))  # device id / module name
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    message: Mapped[str | None] = mapped_column(Text)
    acknowledged: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )