"""消息工具函数"""
from __future__ import annotations

import asyncio
import logging

import config

logger = logging.getLogger("spam_guard")


async def auto_delete(message, seconds: int | None = None) -> None:
    """延迟删除消息。删除失败不影响主流程。"""
    if not message:
        return
    try:
        await asyncio.sleep(seconds or config.AUTO_DELETE_SECONDS)
        await message.delete()
    except Exception as e:
        logger.debug(f"自动删除消息失败: {e}")


def schedule_delete(message, seconds: int | None = None) -> None:
    """创建自动删除任务。"""
    asyncio.create_task(auto_delete(message, seconds=seconds))


async def safe_reply(update, context, text: str, **kwargs):
    """优先回复原消息；原消息已被删除/不可回复时，降级为普通群消息。"""
    try:
        if update and update.message:
            return await update.message.reply_text(text, **kwargs)
    except Exception as e:
        if "Message to be replied not found" not in str(e):
            logger.warning(f"回复消息失败，降级普通发送: {type(e).__name__}: {e}")
    chat_id = update.effective_chat.id if update and update.effective_chat else None
    if not chat_id:
        raise RuntimeError("missing chat_id for safe_reply")
    return await context.bot.send_message(chat_id=chat_id, text=text, **kwargs)