AutoTeams.js - Tampermonkey/Greasemonkey script for autojoining meetings

autoteams.js

// ==UserScript==
// @name         AutoTeams
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Auto Join MS Teams meetings
// @author       arnav-t
// @match        https://teams.microsoft.com/*
// @grant        none
// ==/UserScript==

class AutoTeams {
  constructor() {
    this.teams = {
      cfd: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:e4cc42e390f54e1e80af6708a137178c@thread.tacv2&ctx=channel',
        slots: [
          {day: 2, startHour: 8, startMinute: 0, endHour: 10, endMinute: 0},
          {day: 6, startHour: 14, startMinute: 30, endHour: 16, endMinute: 30}
        ]
      },
      microfluidics: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:58d9533c73f6476094cf9cc008b539e1@thread.tacv2&ctx=channel',
        slots: [
          {day: 1, startHour: 8, startMinute: 0, endHour: 10, endMinute: 0},
          {day: 2, startHour: 12, startMinute: 0, endHour: 13, endMinute: 0},
          {day: 4, startHour: 17, startMinute: 0, endHour: 18, endMinute: 0}
        ]
      },
      ecpackaging: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:4287713e60414ede8d4db1542483eb10@thread.tacv2&ctx=channel',
        slots: [
          {day: 1, startHour: 12, startMinute: 0, endHour: 13, endMinute: 0},
          {day: 2, startHour: 10, startMinute: 0, endHour: 12, endMinute: 0}
        ]
      },
      laser: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:284daeaaba1240429aade22c986a0ad1@thread.tacv2&ctx=channel',
        slots: [
          {day: 3, startHour: 11, startMinute: 0, endHour: 12, endMinute: 0},
          {day: 4, startHour: 12, startMinute: 0, endHour: 13, endMinute: 0},
          {day: 5, startHour: 8, startMinute: 0, endHour: 9, endMinute: 0}
        ]
      },
      npm: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:642438518d3d44698b5633239b6d3d4c@thread.tacv2&ctx=channel',
        slots: [
          {day: 3, startHour: 12, startMinute: 0, endHour: 13, endMinute: 0},
          {day: 4, startHour: 11, startMinute: 0, endHour: 12, endMinute: 0},
          {day: 5, startHour: 9, startMinute: 0, endHour: 11, endMinute: 0}
        ]
      },
      human: {
        url: 'https://teams.microsoft.com/_#/school/conversations/General?threadId=19:b000645cca6b4f668239f09d46a74c40@thread.tacv2&ctx=channel',
        slots: [
          {day: 3, startHour: 10, startMinute: 0, endHour: 11, endMinute: 0},
          {day: 4, startHour: 9, startMinute: 0, endHour: 10, endMinute: 0},
          {day: 5, startHour: 11, startMinute: 0, endHour: 13, endMinute: 0}
        ]
      }
    };
    this.state = 'idle';
    this.initDelay = 1*60*1000;
    this.slotRecheckTime = 1*60*1000;
    this.loadTime = 15*1000;
    this.retryTime = 30*1000;
    this.jbMaxRetries = 3;
    
    this.refreshUrl = 'https://teams.microsoft.com/_#/my/file-recent';
    this.join = this.join.bind(this);
    this.init = this.init.bind(this);

    this.init();
  }

  asyncTimeout(delay) {
    return new Promise(res => setTimeout(() => res(), delay));
  }

  async init() {
    console.log('[AT] Initializing AutoTeams.');
    this.asyncTimeout(this.initDelay);

    // Check slots every slotRecheckTime
    setInterval(() => {
      if (this.state === 'meeting') {
        // Verify that currently in meeting
        if (!document.querySelector('#hangup-button')) this.state = 'idle';
        else return;
      } else if (this.state === 'joining') return;
      
      console.log('[AT] Checking slots.');
      const currentDay = (new Date()).getDay();
      for (const team in this.teams) {
        for (const slot of this.teams[team].slots) {
          if (slot.day !== currentDay) continue;

          const startTime = new Date(); startTime.setHours(slot.startHour, slot.startMinute, 0, 0);
          const endTime = new Date(); endTime.setHours(slot.endHour, slot.endMinute, 0, 0);
          const currentTime = new Date();

          // If current time is in between start and end time, join meeting
          if (currentTime >= startTime && currentTime < endTime) {
            console.log(`[AT] Joining team "${team}".`);
            const duration = endTime - currentTime;
            this.join(team, duration);
            return;
          }
        }
      }
    }, this.slotRecheckTime);
  }

  async join(team, duration) {
    if (this.state === 'meeting') return;
    this.state = 'joining';

    // Initalize startTime
    const startTime = new Date();

    // Load team page
    window.location.href = this.teams[team].url;
    await this.asyncTimeout(this.loadTime);
    console.log('[AT] Team page loaded.');

    let joinButton = null;
    for (let attempt = 0; attempt < this.jbMaxRetries; ++attempt) {
      // Try to fetch join button
      console.log(`[AT] Attempting to find meeting (${attempt+1}).`);
      joinButton = document.querySelector('.ts-calling-join-button');
      if (joinButton) break;
      else await this.asyncTimeout(this.retryTime);
    }
    if (!joinButton) {
      console.log('[AT] Meeting not found. Resetting to idle.');
      window.location.href = this.refreshUrl;
      this.state = 'idle';
      return;
    }
    console.log('[AT] Fetched join button.');

    // Attempt to join meeting
    joinButton.click();
    await this.asyncTimeout(this.loadTime);
    console.log('[AT] Turning off camera and microphone.');
    // Turn camera and microphone off
    document.querySelector('span[title="Mute microphone"]')?.click();
    document.querySelector('span[title="Turn camera off"]')?.click();
    // Finally join the meeting
    joinButton = document.querySelector('.join-btn.ts-btn');
    if (!joinButton) {
      console.log('[AT] Unable to join. Resetting to idle.');
      window.location.href = this.refreshUrl;
      this.state = 'idle';
      return;
    }
    joinButton.click();

    const remaining = Math.max(duration - (new Date() - startTime), this.loadTime);
    console.log(`[AT] Hanging up in ${(remaining/1000).toFixed()} seconds.`);
    this.state = 'meeting';
    await this.asyncTimeout(remaining);
    console.log('[AT] Hanging up.');
    // Hang up
    document.querySelector('#hangup-button').click();
    this.state = 'idle';
  }
}

window.onload = () => {
  window.at = new AutoTeams();
};