Twyla-widget-core NPM

Widget Core

Installation

npm i -S twyla-widget-core

Usage

import {init, send, initiateConversation} from 'twyla-widget-core';

init({ apiKey, hookURL })
  .then(({botName, history}) {
    initiateConversation();
    /* ... */
  }, error => {})
  .catch(error => {});

send('I need to book a ticket');

API

/**
 * Initialises the widget
 * Resolves promise on connection success with botName and history
 * Rejects promise is hookURL is of invalid format
 * @param configuration.apiKey {String}
 * @param configuration.hookURL {String}
 * @param onMessage {Function} callback for incoming messages
 * @returns {Promise<({botName: String, history: Array[{content: String, made_by: String}]})>}
 */
init(configuration, onMessage),

// ===============================================================================
// Messaging API
// ===============================================================================

/**
 * Send message
 * @param message {String}
 */
 send(message),

/**
 * To get the bot to say the intro message (if exists) without having the user to send a message first
 * Must be called after init
 */
 initiateConversation(),

/*
 * Sets callback for connection change
 * @param callback(isConnected: bool) {Function}
 */
 onConnectionChange(callback),

// ===============================================================================
// Payload API
// ===============================================================================

/**
 * Adds a property to the payload object
 * If property already exists, its value will be overwritten
 * @param key {string}
 * @param value {*}
 */
 attachToPayload(key, value),

 /**
  * Removes a property from the payload object
  * @param key {string}
  */
 detachFromPayload(key),

 /**
  * Adds a property to the metadata object in payload
  * If property already exists, its value will be overwritten
  * @param key {string}
  * @param value {*}
  */
 setMetadata(key, value),

// ===============================================================================
// Session API
// ===============================================================================

/**
 * Returns a promise that resolves if and when user_id_cookie is available
 * @returns {Promise<string>}
 */
 getUserId(),

/**
 * Ends session
 */
 endSession(),

/**
 * Ends session and clears all data
 */
 clearSession(),

Note: Try to call init only when user has to chat with the bot (typically on chat window open) rather than on website/app load. Once initialised, the connection will be active in background for the lifetime of the website/app and will automatically reconnect on outages such as network loss. Call endSession to finish the chat in cases such as navigating to a page that doesn't have the chat feature. If you have to resume the chat on re-navigating to the page(s) with the chat, you need not re initialise the connection, instead you can hold the reference to the onMessage handler to continue to receive new messages. If you cannot then call endSession on chat page leave and re initialise on chat page enter. Use the clearSession API to start a fresh chat (conversation history will be deleted) when user revisits the website/app. And also if you have multiple bots, use clearSession before talking to a new bot.