"""
Alert model for system notifications.
"""

from datetime import datetime

from sqlalchemy import DateTime, JSON, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.core.database import Base


class Alert(Base):
    """System alerts and notifications."""

    __tablename__ = "alerts"

    id: Mapped[int] = mapped_column(primary_key=True)
    timestamp: Mapped[datetime] = mapped_column(DateTime(timezone=True), index=True)

    # Alert type
    alert_type: Mapped[str] = mapped_column(
        String(50), index=True, nullable=False
    )  # security, host_metrics, device_offline, etc.

    # Severity
    severity: Mapped[str] = mapped_column(
        String(20), nullable=False, index=True
    )  # info, warning, error, critical

    # Content
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    message: Mapped[str] = mapped_column(Text, nullable=False)
    alert_metadata: Mapped[dict | None] = mapped_column(JSON)

    # State
    acknowledged: Mapped[bool] = mapped_column(default=False, index=True)
    acknowledged_at: Mapped[datetime | None] = mapped_column()
    acknowledged_by: Mapped[int | None] = mapped_column()  # user_id

    dismissed: Mapped[bool] = mapped_column(default=False, index=True)
    dismissed_at: Mapped[datetime | None] = mapped_column()

    # Delivery tracking
    sent_dashboard: Mapped[bool] = mapped_column(default=False)
    sent_telegram: Mapped[bool] = mapped_column(default=False)
    sent_email: Mapped[bool] = mapped_column(default=False)