/* eslint-disable @typescript-eslint/no-unsafe-return */
/* eslint-disable @typescript-eslint/member-delimiter-style */
/* eslint-disable prefer-arrow/prefer-arrow-functions */

import { Message } from './koishi';
import { queryByRegExp } from './twitter';

function parseCmd(message: string): {
  cmd: string;
  args: string[];
} {
  message = message.trim();
  message = message.replace('\\\\', '\\0x5c');
  message = message.replace('\\\"', '\\0x22');
  message = message.replace('\\\'', '\\0x27');
  const strs = message.match(/'[\s\S]*?'|(?:\S+=)?"[\s\S]*?"|\S+/mg);
  const cmd = strs?.length ? strs[0].length ? strs[0].substring(0, 1) === '/' ? strs[0].substring(1) : '' : '' : '';
  const args = (strs ?? []).slice(1).map(arg => {
    arg = arg.replace(/^(\S+=)?["']+(?!.*=)|["']+$/g, '$1');
    arg = arg.replace('\\0x27', '\\\'');
    arg = arg.replace('\\0x22', '\\\"');
    arg = arg.replace('\\0x5c', '\\\\');
    return arg;
  });
  return {
    cmd,
    args,
  };
}

function view(_chat: IChat, args: string[], reply: (msg: string) => any): void {
  if (!Number.isInteger(Number(args[0]))) return reply('查询格式有误。格式：/nanatsuu_view〈整数〉');
  queryByRegExp('t7s_staff', /今週の『それゆけ！ナナスタ☆通信』第(\d+)話はこちら！/, 3600 * 24 * 6)
    .then(match => {
      if (!match) throw Error();
      let query = Number(args[0] || Number(match[1]));
      if (query < 0) query += Number(match[1]);
      if (args[0] === '0' || query < 0 || query > Number(match[1])) {
        return reply(`查询取值范围有误。当前可用的取值范围：${1 - Number(match[1])}～${Number(match[1])}`);
      }
      reply(`第 ${query} 话：\n` +
        Message.Image(`https://d2n19nac4w0gh6.cloudfront.net/resource/images/webview/comic/story/comic_${
          String(query).padStart(3, '0')
        }.jpg`)
      );
    }).catch((err: Error) => reply(`查询失败，请稍后重试。${err.message ? `原因：${err}`: ''}`));
}

export { parseCmd, view };