from __future__ import annotations

import logging
from typing import Any

from control_plane.events.models import Event, EventType
from control_plane.projects.models import Project, Task

logger = logging.getLogger(__name__)


class EventBus:
    """Persisted event bus for control-plane state changes."""

    def publish(
        self,
        event_type: EventType | str,
        *,
        project: Project | None = None,
        task: Task | None = None,
        actor: str = "system",
        payload: dict[str, Any] | None = None,
    ) -> Event:
        event = Event.objects.create(
            event_type=str(event_type), project=project, task=task, actor=actor, payload=payload or {}
        )
        logger.info(
            "event_published",
            extra={"event_id": str(event.id), "event_type": event.event_type, "project_id": str(project.id) if project else None},
        )
        return event