const axios = require('../utils/request');
const logger = require('../utils/logger');

const APPID = process.env.BOT_APPID;
const CLIENT_SECRET = process.env.BOT_CLIENT_SECRET;

let accessToken = '';
let expireAt = 0;

async function getAccessToken() {
  const now = Date.now() / 1000;
  if (accessToken && expireAt - now > 60) {
    return accessToken;
  }
  const url = 'https://bots.qq.com/app/getAppAccessToken';
  const res = await axios.post(url, {
    appId: APPID,
    clientSecret: CLIENT_SECRET
  });
  accessToken = res.data.access_token;
  expireAt = now + parseInt(res.data.expires_in, 10);
  logger.info('获取access_token成功');
  return accessToken;
}

async function getGuildList() {
  const token = await getAccessToken();
  const res = await axios.get('/users/@me/guilds', {
    headers: {
      Authorization: `QQBot ${token}`
    }
  });
  return res.data;
}

module.exports = {
  getAccessToken,
  getGuildList,
};