/**
 *   Wechaty - https://github.com/chatie/wechaty
 *
 *   @copyright 2016-2018 Huan LI <zixia@zixia.net>
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */

// tslint:disable:no-console

import { PuppetPadchat } from '../src/'
/**
 *
 * 1. Declare your Bot!
 *
 */
const puppet = new PuppetPadchat()

/**
 *
 * 2. Register event handlers for Bot
 *
 */
puppet
.on('logout', onLogout)
.on('login',  onLogin)
.on('scan',   onScan)
.on('error',  onError)
.on('message', onMessage)

/**
 *
 * 3. Start the bot!
 *
 */
puppet.start()
.catch(async e => {
  console.error('Bot start() fail:', e)
  await puppet.stop()
  process.exit(-1)
})

/**
 *
 * 4. You are all set. ;-]
 *
 */

/**
 *
 * 5. Define Event Handler Functions for:
 *  `scan`, `login`, `logout`, `error`, and `message`
 *
 */
function onScan (qrcode: string, status: number) {
  // Generate a QR Code online via
  // http://goqr.me/api/doc/create-qr-code/
  const qrcodeImageUrl = [
    'https://api.qrserver.com/v1/create-qr-code/?data=',
    encodeURIComponent(qrcode),
  ].join('')

  console.log(`[${status}] ${qrcodeImageUrl}\nScan QR Code above to log in: `)
}

function onLogin (contactId: string) {
  console.log(`${contactId} login`)
  puppet.messageSendText({ contactId, }, 'Wechaty login').catch(console.error)
}

function onLogout (contactId: string) {
  console.log(`${contactId} logouted`)
}

function onError (e: string) {
  console.error('Bot error:', e)
  /*
  if (bot.logonoff()) {
    bot.say('Wechaty error: ' + e.message).catch(console.error)
  }
  */
}

/**
 *
 * 6. The most important handler is for:
 *    dealing with Messages.
 *
 */
async function onMessage (messageId: string) {
  const payload = await puppet.messagePayload(messageId)
  console.log(JSON.stringify(payload))
}

/**
 *
 * 7. Output the Welcome Message
 *
 */
const welcome = `
Puppet Version: ${puppet.version()}

Please wait... I'm trying to login in...

`
console.log(welcome)