"""SQLAlchemy model for instance lifecycle event audit rows."""

import uuid
from datetime import datetime
from typing import Any

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

from src.models.base import Base, UUIDPrimaryKeyMixin


class InstanceEvent(UUIDPrimaryKeyMixin, Base):
    __tablename__ = "instance_events"

    instance_id: Mapped[uuid.UUID] = mapped_column(
        Uuid(as_uuid=True),
        ForeignKey("tool_instances.id", ondelete="CASCADE"),
        nullable=False,
    )
    event_type: Mapped[str] = mapped_column(String(50), nullable=False)
    status: Mapped[str | None] = mapped_column(String(50), nullable=True)
    message: Mapped[str | None] = mapped_column(Text, nullable=True)
    created_by: Mapped[uuid.UUID | None] = mapped_column(
        Uuid(as_uuid=True),
        ForeignKey("users.id", ondelete="SET NULL"),
        nullable=True,
    )
    event_metadata: Mapped[dict[str, Any]] = mapped_column(
        "metadata",
        JSON,
        nullable=False,
        default=dict,
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )