"""ncatbot-webhook-plugin 入口：组装各模块，启动 HTTP 服务。"""

import asyncio
import logging
import os

from aiohttp import web
from ncatbot.plugin import NcatBotPlugin

from .config import HOST, PORT, UPLOAD_DIR, WEBHOOK_API_KEY
from .handlers.health import health_handler
from .handlers.message import webhook_handler
from .handlers.upload import cleanup_expired_files, upload_handler
from .middleware import auth_middleware, request_id_middleware

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)


class WebHookPlugin(NcatBotPlugin):
    """NcatBot 插件：对外暴露 HTTP 接口，接收外部消息转发至 QQ。"""

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._webhook_runner: web.AppRunner | None = None
        self._cleanup_task: asyncio.Task | None = None

    async def on_load(self):
        self.logger.info("Webhook 插件已加载")
        self.logger.info("WEBHOOK_API_KEY: %s", "已配置" if os.environ.get("WEBHOOK_API_KEY") else "自动生成")
        asyncio.create_task(self._start_webhook())
        self._cleanup_task = asyncio.create_task(self._cleanup_loop())

    async def on_close(self):
        if self._cleanup_task is not None:
            self._cleanup_task.cancel()
            try:
                await self._cleanup_task
            except asyncio.CancelledError:
                pass
            self._cleanup_task = None
        await self._stop_webhook()
        self.logger.info("Webhook 插件已卸载")

    async def _cleanup_loop(self) -> None:
        """每小时清理一次过期上传文件。"""
        while True:
            await asyncio.sleep(3600)
            try:
                await cleanup_expired_files()
            except Exception as exc:
                self.logger.error("清理过期文件失败: %s", exc)

    def _create_app(self) -> web.Application:
        app = web.Application(middlewares=[request_id_middleware, auth_middleware])
        app["qq_api"] = self.api
        app["logger"] = self.logger
        app.router.add_get("/healthz", health_handler)
        app.router.add_post("/webhook", webhook_handler)
        app.router.add_post("/upload", upload_handler)
        return app

    async def _start_webhook(self):
        await self._stop_webhook()
        app = self._create_app()
        self._webhook_runner = web.AppRunner(app)
        await self._webhook_runner.setup()
        site = web.TCPSite(self._webhook_runner, HOST, PORT)
        await site.start()
        self.logger.info("Webhook 已启动: %s:%d", HOST, PORT)
        self.logger.info("上传目录: %s", UPLOAD_DIR)

    async def _stop_webhook(self):
        if self._webhook_runner is not None:
            await self._webhook_runner.cleanup()
            self._webhook_runner = None
            self.logger.info("Webhook 已停止")