from __future__ import annotations
import asyncio
import logging
from dataclasses import dataclass
from typing import Callable, Coroutine

logger = logging.getLogger(__name__)


@dataclass
class ScheduledTask:
    name: str
    coro_factory: Callable[[], Coroutine]
    interval_seconds: int
    run_on_startup: bool = False


async def start_scheduler(tasks: list[ScheduledTask]) -> None:
    """Run scheduled tasks in a loop. Call with asyncio.create_task()."""
    last_run: dict[str, float] = {}

    for task in tasks:
        if task.run_on_startup:
            logger.info(f"Startup task: {task.name}")
            asyncio.create_task(_run_task(task))
            last_run[task.name] = asyncio.get_event_loop().time()

    while True:
        now = asyncio.get_event_loop().time()
        for task in tasks:
            last = last_run.get(task.name, 0)
            if now - last >= task.interval_seconds:
                asyncio.create_task(_run_task(task))
                last_run[task.name] = now
        await asyncio.sleep(1)


async def _run_task(task: ScheduledTask) -> None:
    try:
        await task.coro_factory()
    except Exception:
        logger.exception(f"Scheduled task {task.name!r} raised an exception")