index.js

const fs = require('fs')
const readline = require('readline')
const { google } = require('googleapis')
const sdk = require('matrix-js-sdk')
const pointsBot = require('./pointsbot.js')
const chatBot = require('./chatbot.js')

// If modifying these scopes, delete credentials.json.
const SCOPES = ['https://www.googleapis.com/auth/spreadsheets']
const TOKEN_PATH = 'credentials.json'

// Load client secrets from a local file.
fs.readFile('client_secret.json', (err, content) => {
  if (err) return console.log('Error loading client secret file:', err)
  // Authorize a client with credentials, then call the Google Sheets API.
  authorize(JSON.parse(content), authenticated)
})

/**
 * Create an OAuth2 client with the given credentials, and then execute the
 * given callback function.
 * @param {Object} credentials The authorization client credentials.
 * @param {function} callback The callback to call with the authorized client.
 */
function authorize(credentials, callback) {
  const { client_secret, client_id, redirect_uris } = credentials.installed
  const oAuth2Client = new google.auth.OAuth2(
    client_id,
    client_secret,
    redirect_uris[0]
  )

  // Check if we have previously stored a token.
  fs.readFile(TOKEN_PATH, (err, token) => {
    if (err) return getNewToken(oAuth2Client, callback)
    oAuth2Client.setCredentials(JSON.parse(token))
    callback(oAuth2Client)
  })
}

/**
 * Get and store new token after prompting for user authorization, and then
 * execute the given callback with the authorized OAuth2 client.
 * @param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
 * @param {getEventsCallback} callback The callback for the authorized client.
 */
function getNewToken(oAuth2Client, callback) {
  const authUrl = oAuth2Client.generateAuthUrl({
    access_type: 'offline',
    scope: SCOPES,
  })
  console.log('Authorize this app by visiting this url:', authUrl)
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
  })
  rl.question('Enter the code from that page here: ', code => {
    rl.close()
    oAuth2Client.getToken(code, (err, token) => {
      if (err) return callback(err)
      oAuth2Client.setCredentials(token)
      // Store the token to disk for later program executions
      fs.writeFile(TOKEN_PATH, JSON.stringify(token), err => {
        if (err) console.error(err)
        console.log('Token stored to', TOKEN_PATH)
      })
      callback(oAuth2Client)
    })
  })
}

const client = sdk.createClient('https://matrix.org')

function authenticated(auth) {
  fs.readFile('bot_credentials.json', (err, content) => {
    if (err) return console.log('Error loading bot credentials', err)

    content = JSON.parse(content)

    client.login(
      'm.login.password',
      {
        user: content.username,
        password: content.password,
      },
      (err, data) => {
        if (err) {
          console.log('Error:', err)
        }

        console.log(`Logged in ${data.user_id} on device ${data.device_id}`)
        const client = sdk.createClient({
          baseUrl: 'https://matrix.org',
          accessToken: data.access_token,
          userId: data.user_id,
          deviceId: data.device_id,
        })

        client.on('Room.timeline', (event, room, toStartOfTimeline) => {
          chatBot.handleNewMember(event, room, toStartOfTimeline, client)
          pointsBot.handlePointGiving(
            auth,
            event,
            room,
            toStartOfTimeline,
            client
          )
          chatBot.handleResponse(event, room, toStartOfTimeline, client)
        })

        client.startClient(0)
      }
    )
  })
}

// Zeit NOW workaround
const http = require('http')
http
  .createServer((req, res) => {
    res.setHeader('Content-Type', 'text/plain; charset=utf-8')
    res.end('Hello there!')
  })
  .listen()