node-vk-bot-api

node-vk-bot-api

🤖 VK bot framework for Node.js, based on Bots Long Poll API.

Install

$ npm i node-vk-bot-api@2 -S # bots longpoll api
$ npm i node-vk-bot-api@1 -S # user longpoll api

Usage

const VkBot = require('node-vk-bot-api')

const bot = new VkBot({
  token: process.env.TOKEN,
  group_id: process.env.GROUP_ID
})

bot.command('/start', (ctx) => {
  ctx.reply('Hello!')
})

bot.startPolling()

Examples

There's a few simple examples.

Methods

• constructor(settings)
• .use(middleware)
• .command(triggers, ...middlewares)
• .event(triggers, ...middlewares)
• .on(...middlewares)
• .sendMessage(userId, message, attachment, keyboard, sticker)
• .startPolling()

constructor(settings)

Create bot.

const bot = new VkBot({
  token: process.env.TOKEN,
  group_id: process.env.GROUP_ID
})

.use(middleware)

Add simple middleware.

bot.use((ctx, next) => {
  ctx.message.timestamp = new Date().getTime()
  
  next()
})

.command(triggers, ...middlewares)

Add middlewares with triggers for message_new event.

bot.command('start', (ctx) => {
  ctx.reply('Hello!')
})

.event(triggers, ...middlewares)

Add middlewares with triggers for selected events.

bot.event('message_edit', (ctx) => {
  ctx.reply('Your message was editted')
})

.on(...middlewares)

Add reserved middlewares without triggers.

bot.on((ctx) => {
  ctx.reply('No commands for you.')
})

.sendMessage(userId, message, attachment, keyboard, sticker)

Send message to user.

// Simple usage
bot.sendMessage(145003487, 'Hello!', 'photo1_1')

// Advanced usage
bot.sendMessage(145003487, {
  message: 'Hello!',
  lat: 59.939095,
  lng: 30.315868
})

.startPolling([timeout])

Start polling with given timeout (25 by default).

bot.startPolling()

Context Methods

• .reply(message, attachment, markup, sticker)

.reply(message, attachment, markup, sticker)

Helper method for reply to the current user.

bot.command('start', (ctx) => {
  ctx.reply('Hello!')
})

Markup

Keyboards

• Markup.keyboard(buttons): Create keyboard
• Markup.button(label, color, payload): Create custom button
• Markup.oneTime(): Set oneTime to keyboard

Simple usage

ctx.reply('Select your sport', null, Markup
  .keyboard([
    'Football',
    'Basketball',
  ])
  .oneTime()
)

Advanced usage

ctx.reply('How are you doing?', null, Markup
  .keyboard([
    [
      Markup.button('Normally', 'primary'),
    ],
    [
      Markup.button('Fine', 'positive'),
      Markup.button('Bad', 'negative'),
    ],
  ])
)

Sessions

Store anything for current user in local (or redis) memory.

Usage

const VkBot = require('node-vk-bot-api')
const Session = require('node-vk-bot-api/lib/session')

const bot = new VkBot({
  token: process.env.TOKEN,
  group_id: process.env.GROUP_ID,
})
const session = new Session()

bot.use(session.middleware())

bot.on((ctx) => {
  ctx.session.counter = ctx.session.counter || 0
  ctx.session.counter++

  ctx.reply(`You wrote ${ctx.session.counter} messages.`)
})

bot.startPolling()

API

Options

• key: Context property name (default: session)
• getSessionKey: Getter for session key

Default getSessionKey(ctx)

const getSessionKey = (ctx) => {
 return `${ctx.message.from_id}:${ctx.message.from_id}` 
}

Stage

Scene manager.

const VkBot = require('node-vk-bot-api')
const Scene = require('node-vk-bot-api/lib/scene')
const Session = require('node-vk-bot-api/lib/session')
const Stage = require('node-vk-bot-api/lib/stage')

const bot = new VkBot({
  token: process.env.TOKEN,
  group_id: process.env.GROUP_ID,
})
const scene = new Scene('meet',
  (ctx) => {
    ctx.scene.next()
    ctx.reply('How old are you?')
  },
  (ctx) => {
    ctx.session.age = +ctx.message.text

    ctx.scene.next()
    ctx.reply('What is your name?')
  },
  (ctx) => {
    ctx.session.name = ctx.message.text

    ctx.scene.leave()
    ctx.reply(`Nice to meet you, ${ctx.session.name} (${ctx.session.age} years old)`)
  }
)
const session = new Session()
const stage = new Stage(scene)

bot.use(session.middleware())
bot.use(stage.middleware())

bot.command('/meet', (ctx) => {
  ctx.scene.enter('meet')
})

bot.startPolling()

API

Stage

• constructor(...scenes): Register scenes

Scene

• constructor(name, ...middlewares): Create scene

Context

ctx.scene.enter(name)       // Enter in scene
ctx.scene.leave()           // Leave from scene
ctx.scene.next()            // Go to the next step in scene
ctx.scene.selectStep(index) // Go to the selected step in scene

License

MIT.