"""Executor monitoring API router (P1-9).

Endpoints for local executor heartbeat, status, and task overview.
"""
from typing import Any, Dict, Optional
from fastapi import APIRouter
from pydantic import BaseModel, Field

from ..services.task_manager import get_task_manager

router = APIRouter(prefix="/api/executor", tags=["executor"])


class HeartbeatRequest(BaseModel):
    executor_id: str = Field(..., description="Unique executor identifier")
    status: str = Field(default="idle", description="idle / running / error")
    current_task: Optional[str] = Field(default=None, description="Current task_id")
    progress: Optional[Dict[str, Any]] = Field(default=None, description="Progress data")


@router.post("/heartbeat")
def executor_heartbeat(request: HeartbeatRequest):
    """Local executor reports heartbeat and status."""
    manager = get_task_manager()
    result = manager.executor_heartbeat(
        executor_id=request.executor_id,
        status=request.status,
        current_task=request.current_task,
        progress=request.progress,
    )
    return result


@router.get("/status")
def get_executor_status():
    """Get all registered executors and their online status."""
    manager = get_task_manager()
    return manager.get_executor_status()


@router.get("/overview")
def get_task_overview():
    """Get task overview statistics for monitoring dashboard."""
    manager = get_task_manager()
    return manager.get_overview()