"""Docker Alert model for Homelab Automation."""
from __future__ import annotations

from datetime import datetime
from typing import Optional

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

from .database import Base


class DockerAlert(Base):
    """Model representing a Docker alert for container issues."""
    __tablename__ = "docker_alerts"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    host_id: Mapped[str] = mapped_column(String, ForeignKey("hosts.id", ondelete="CASCADE"), nullable=False)
    container_name: Mapped[str] = mapped_column(String(255), nullable=False)
    severity: Mapped[str] = mapped_column(String(20), nullable=False, default="warning")  # warning/error/critical
    state: Mapped[str] = mapped_column(String(20), nullable=False, default="open")  # open/closed/acknowledged
    message: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    opened_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
    closed_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    acknowledged_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    acknowledged_by: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
    last_notified_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)

    # Relationship to host
    host: Mapped["Host"] = relationship("Host", back_populates="docker_alerts")

    __table_args__ = (
        Index("idx_docker_alerts_state_host", "state", "host_id"),
        {"sqlite_autoincrement": True},
    )

    def __repr__(self) -> str:  # pragma: no cover
        return f"<DockerAlert id={self.id} container={self.container_name} severity={self.severity}>"

    def to_dict(self) -> dict:
        """Convert to dictionary for API responses."""
        return {
            "id": self.id,
            "host_id": self.host_id,
            "container_name": self.container_name,
            "severity": self.severity,
            "state": self.state,
            "message": self.message,
            "opened_at": self.opened_at.isoformat() if self.opened_at else None,
            "closed_at": self.closed_at.isoformat() if self.closed_at else None,
            "acknowledged_at": self.acknowledged_at.isoformat() if self.acknowledged_at else None,
            "acknowledged_by": self.acknowledged_by,
            "last_notified_at": self.last_notified_at.isoformat() if self.last_notified_at else None,
        }