import asyncio
import logging
from typing import Dict, List, Any, Optional

logger = logging.getLogger(__name__)


class TaskRegistry:
    """全局任务注册表 - 管理所有运行中的 asyncio.Task"""

    def __init__(self):
        self._tasks: Dict[str, asyncio.Task] = {}
        self._lock = asyncio.Lock()

    async def register(self, trace_id: str, task: asyncio.Task) -> None:
        async with self._lock:
            self._tasks[trace_id] = task

    async def unregister(self, trace_id: str) -> None:
        async with self._lock:
            self._tasks.pop(trace_id, None)

    async def cancel_task(self, trace_id: str) -> bool:
        async with self._lock:
            task = self._tasks.get(trace_id)
            if task and not task.done():
                task.cancel()
                return True
            return False

    async def cancel_all(self) -> int:
        async with self._lock:
            count = 0
            for task in self._tasks.values():
                if not task.done():
                    task.cancel()
                    count += 1
            return count

    async def get_running_tasks(self) -> List[Dict[str, Any]]:
        async with self._lock:
            return [
                {
                    "trace_id": trace_id,
                    "task_name": task.get_name(),
                    "done": task.done(),
                    "cancelled": task.cancelled(),
                }
                for trace_id, task in self._tasks.items()
            ]


__all__ = ["TaskRegistry"]