README на русском

VK BOTS

• Create and control VK bots easily.
• Uses LongPoll or Callback API to get new messages

npm install --save node-vk-bot

If you are cloning this repository, remember to run npm install to install dependencies.

Example

const { Bot, Keyboard } = require('node-vk-bot')

const bot = new Bot({
  token: 'YOUR TOKEN',
  group_id: 123456
}).start()

bot.get(/Hi|Hello|Hey/i, (message, exec, reply) => {
  const keyboard = new Keyboard().addButton('Hi!')
  const options =  { forward_messages: message.id, keyboard }

  reply('Hello!', options)
})

More examples (how to use webhooks, upload pictures, ...)

Bots created with this library

if you want your bot to be in this list, just make a pull request

• GitHub Events - Notifies you about new issues, commits, etc. in private messages by @vitalyavolyn

Table of contents

• Getting Started
• Bot
  • Methods
  • start
  • get
  • getPayload
  • send
  • uploadPhoto
  • api
  • processUpdate
  • stop
  • Events
  • update
  • voice
  • sticker
  • payload
  • poll-error
  • command-notfound
• Keyboard
  • addButton
  • addRow
  • toString
  • KeyboardColor
• The Message Object

Getting Started

In the example above you can see a super simple VK Bot. This bot will answer our greetings, that's all.

Let's explain the code, it's pretty simple.

1. Then I create a bot instance with my group's token.
2. By calling bot.start() the bot starts polling updates from the server.
3. Then I simply listen on messages which pass the RegExp test, when I get such message, Then I send a new message with text 'Hello' to that chat with a forwarded message.

Bot

The class used to create new bots, it takes a single argument, an options object.

new Bot({
  token: 'TOKEN',
  group_id: 123456
  api: {
    v: 5.80, // >= 5.80
    lang: 'ru'
  }
})

api is object with API settings: version and language. (both strings) (Read more)

Methods

start

Starts polling updates from API. Emits an update event after getting updates with the response from server. Update examples.

get

Listens on specific message matching the RegExp pattern.

bot.get(/Hello/i, (msg, exec, reply) => {
  console.log(msg)
  reply('Hi!')
})

The argument passed to callback is a Message object, result of pattern.exec(text) and a reply function.

reply takes text as first argument and optional message.send parameters as second.

getPayload

Listens for specific payload (used for keyboards) This is a syntactic sugar for the payload event

bot.getPayload('{"command": "start"}', (msg, reply) => console.log(msg))

Arguments: json string and listener

send

Sends message.

bot.send('text', peer_id, params)

uploadPhoto

Upload a photo.

The only parameter is an absolute path to picture or a stream object. Returns a Promise that resolves with a photo object

bot.uploadPhoto('~/kittens.png').then(photo => {
  console.log(photo)
})

let stream = fs.createReadStream('./kittens.png')
bot.uploadPhoto(stream).then(photo => {
  console.log(photo)
})

api

Access VK API.

bot.api('users.get', { user_ids: 1 })
  .then(res => console.log(res[0].first_name)) // Pavel

When using execute method, this function returns full response object. (Because there may be errors and responses in same object).

processUpdate

Process an update from Callback API. Example of usage may be found in examples folder

stop

Stops the bot from listening on updates.

bot.stop()

Events

update

The update event is emitted whenever there is a response from LongPoll.

bot.on('update', update => {
  if (update.from_id === 1) {
    console.log('Got a message from Pavel Durov!');
  }
})

voice

The voice event is emitted whenever there is a new voice message. (emits Message object)

sticker

The sticker event is emitted whenever there is a new incoming sticker. (emits Message object)

payload

Emitted when bot recieves a message with json payload (used in keyboards) Emits Message object and reply function

poll-error

The poll-error event is emitted whenever there is an error occurred in LongPoll.

bot.on('poll-error', error => {
  console.error('error occurred on a working with the Long Poll server ' +
    `(${util.inspect(error)})`)
})

command-notfound

This event is emitted whenever there's no .get() listeners matching

bot.on('command-notfound', msg => {
  bot.send('What?', msg.peer_id)
})

Keyboard

The class used to create keyboards in messages

bot.get(/Hi|Hello|Hey/i, message => {
  const keyboard = new Keyboard(true)
    .addButton('Red', KeyboardColor.NEGATIVE)
    .addButton('Green', KeyboardColor.POSITIVE)
    .addRow()
    .addButton('Blue', KeyboardColor.PRIMARY)
    .addButton('White')

  bot.send('Hello!', message.peer_id, keyboard)
});

Full example

The only argument - one_time If true, the keyboard hides after user replies

new Keyboard(true)

addButton

Add a button to the last row.

Parameters:

• label (string) - Text on button (required)
• color (string or KeyboardColor)
• payload (any) - A parameter for Callback API

Maximum amount of buttons in one row is 4

addRow

Add a new row to the keyboard.

Maximum amount of rows is 10

toString

Get the keyboard as a JSON string

KeyboardColor

addButton('label', KeyboardColor.NEGATIVE)

Available colors:

• PRIMARY - blue
• DEFAULT - white
• NEGATIVE - red
• POSITIVE - green

The Message Object

interface Message {
  id: number,
  peer_id: number,
  date: number,
  text: string,
  from_id: number,
  attachments: any,
  important: boolean,
  conversation_message_id: number,
  fwd_messages: any
}

// Reference: https://vk.com/dev/objects/message