Package Exports

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@botpress/chat) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Chat Client

Installation

npm install @botpress/chat # for npm
yarn add @botpress/chat # for yarn
pnpm add @botpress/chat # for pnpm

Usage

API Queries

The @botpress/chat package exports a Client class that can be used to interact with the Botpress Chat API.

import _ from 'lodash'
import * as chat from '@botpress/chat'

const main = async () => {
  /**
   * You can find your webhook id in the the Botpress Dashboard.
   * Navigate to your bot's Chat Integration configuration. Look for:
   * https://webhook.botpress.cloud/$YOUR_WEBHOOK_ID
   */
  const webhookId = process.env.WEBHOOK_ID
  if (!webhookId) {
    throw new Error('WEBHOOK_ID is required')
  }

  const apiUrl = `https://chat.botpress.cloud/${webhookId}`

  // 0. connect and create a user
  const client = await chat.Client.connect({ apiUrl })

  // 1. create a conversation
  const { conversation } = await client.createConversation({})

  // 2. send a message
  await client.createMessage({
    conversationId: conversation.id,
    payload: {
      type: 'text',
      text: 'hello world',
    },
  })

  // 3. sleep for a bit
  await new Promise((resolve) => setTimeout(resolve, 2000))

  // 4. list messages
  const { messages } = await client
    .listConversationMessages({
      id: conversation.id,
    })
    .then(({ messages }) => ({
      messages: _.sortBy(messages, (m) => new Date(m.createdAt).getTime()),
    }))

  const botResponse = messages[1]
  console.log("Bot's response:", botResponse.payload)
}

void main()
  .then(() => {
    console.log('done')
    process.exit(0)
  })
  .catch((err) => {
    console.error(err)
    process.exit(1)
  })

Realtime Events

You can also listen for messages and events in real-time.

// ...

const listener = await client.listenConversation({
  id: conversationId,
})

const botResponse = await new Promise<chat.Message>((resolve) => {
  const onMessage = (ev: chat.Events['message_created']) => {
    if (ev.userId === client.user.id) {
      // message created by my current user, ignoring...
      return
    }
    listener.off('message_created', onMessage)
    resolve(ev)
  }
  listener.on('message_created', onMessage)
})

console.log("Bot's response:", botResponse.payload)

Reconnection

The Client class does not automatically reconnect to the server if the connection is lost. This allow's you to handle reconnection in a way that makes sense for your application. To be notified when the connection is lost, you can listen for the error event:

const state = { messages } // your application state

const onDisconnection = async () => {
  try {
    await listener.connect()
    const { messages } = await client.listConversationMessages({ id: conversationId })
    state.messages = messages
  } catch (thrown) {
    console.error('failed to reconnect, retrying...', thrown)
    setTimeout(onDisconnection, 1000) // consider using a backoff strategy
  }
}

listener.on('error', (err) => {
  console.error('connection lost', err)
  void onDisconnection()
})