import html
import traceback
import ujson

from telegram import Update, ReplyKeyboardRemove
from telegram.constants import ParseMode
from telegram.error import BadRequest
from telegram.ext import CallbackContext

from logger import Log
from config import config

try:
    notice_chat_id = config.TELEGRAM["notice"]["ERROR"]["chat_id"]
except KeyError as error:
    Log.warning("错误通知Chat_id获取失败或未配置，BOT发生致命错误时不会收到通知 错误信息为\n", error)
    notice_chat_id = None


async def error_handler(update: object, context: CallbackContext) -> None:
    """
    记录错误并发送消息通知开发人员。
    Log the error and send a telegram message to notify the developer.
    """
    Log.error(msg="处理函数时发生异常:", exc_info=context.error)

    if notice_chat_id is None:
        return

    tb_list = traceback.format_exception(None, context.error, context.error.__traceback__)
    tb_string = ''.join(tb_list)

    update_str = update.to_dict() if isinstance(update, Update) else str(update)
    text_1 = (
        f'<b>处理函数时发生异常</b> \n'
        f'Exception while handling an update \n'
        f'<pre>update = {html.escape(ujson.dumps(update_str, indent=2, ensure_ascii=False))}'
        '</pre>\n\n'
        f'<pre>context.chat_data = {html.escape(str(context.chat_data))}</pre>\n\n'
        f'<pre>context.user_data = {html.escape(str(context.user_data))}</pre>\n\n'
    )
    text_2 = (
        f'<pre>{html.escape(tb_string)}</pre>'
    )
    try:
        if 'make sure that only one bot instance is running' in tb_string:
            Log.error("其他机器人在运行，请停止！")
            return
        await context.bot.send_message(notice_chat_id, text_1, parse_mode=ParseMode.HTML)
        await context.bot.send_message(notice_chat_id, text_2, parse_mode=ParseMode.HTML)
    except BadRequest as exc:
        if 'too long' in str(exc):
            text = (
                f'<b>处理函数时发生异常，traceback太长导致无法发送，但已写入日志</b> \n'
                f'<code>{html.escape(str(context.error))}</code>'
            )
            try:
                await context.bot.send_message(notice_chat_id, text, parse_mode=ParseMode.HTML)
            except BadRequest:
                text = (
                    '<b>处理函数时发生异常，traceback太长导致无法发送，但已写入日志</b> \n')
                try:
                    await context.bot.send_message(notice_chat_id, text, parse_mode=ParseMode.HTML)
                except BadRequest as exc:
                    Log.error("处理函数时发生异常 \n", exc)
    effective_user = update.effective_user
    try:
        message = update.message
        if message is not None:
            chat = message.chat
            Log.info(f"尝试通知用户 {effective_user.full_name}[{effective_user.id}] "
                     f"在 {chat.full_name}[{chat.id}]"
                     f"的 update_id[{update.update_id}] 错误信息")
            text = f"派蒙这边发生了点问题无法处理！\n" \
                   f"如果当前有对话请发送 /cancel 退出对话。\n" \
                   f"错误信息为 <code>{html.escape(str(context.error))}</code>"
            await context.bot.send_message(message.chat_id, text, reply_markup=ReplyKeyboardRemove(),
                                           parse_mode=ParseMode.HTML)
    except BadRequest as exc:
        Log.error(f"发送 update_id[{update.update_id}] 错误信息失败 错误信息为 {str(exc)}")
        pass