Stackchat Web Messenger

Stackchat Web Messenger adds live web messaging to your website or web app.

Usage

Script

Add the following code towards the end of the head section on your page and replace <app-id> with your app id at the end of the script.

<script>
  !function(e,t,n,r){function s(){try{var e;if((e="string"==typeof this.response?JSON.parse(this.response):this.response).url){var n=t.getElementsByTagName("script")[0],r=t.createElement("script");r.async=!0,r.src=e.url,n.parentNode.insertBefore(r,n)}}catch(e){}}var o,p,a,c=[],i=[];e[n]={init:function(){o=arguments;var e={then:function(t){return i.push({type:"t",next:t}),e},catch:function(t){return i.push({type:"c",next:t}),e}};return e},on:function(){c.push(arguments)},render:function(){p=arguments},destroy:function(){a=arguments}},e.__onWebMessengerHostReady__=function(t){if(delete e.__onWebMessengerHostReady__,e[n]=t,o)for(var r=t.init.apply(t,o),s=0;s<i.length;s++){var u=i[s];r="t"===u.type?r.then(u.next):r.catch(u.next)}p&&t.render.apply(t,p),a&&t.destroy.apply(t,a);for(s=0;s<c.length;s++)t.on.apply(t,c[s])};var u=new XMLHttpRequest;u.addEventListener("load",s),u.open("GET","https://assets.au.stackchat.com/sdk/web-messenger/2.1.30/loader.json",!0),u.responseType="json",u.send()}(window,document,"stackchat");
</script>

Note for deployments in China If you are using Stackchat Web Messenger for a Chinese domain, then you will need to replace the loader URL in the above script. You can do a find and replace as well if you prefer. Replace https://assets.au.stackchat.com with our China based URL https://assets.common.stackchat.com.cn.

And then, initialise the Web Messenger by placing the following code towards the end of the body section of your page:

<script>
  stackchat
    .init({
      appId: "<app-id>",
      region: "cn", // Add this to load assets within China
    })
    .then(function () {
      // YOUR CODE AFTER INIT IS COMPLETE
    });
</script>

NPM

Install via npm or a package manager of choice:

npm install --save @stackchat/web-messenger

Import the module & initialise messenger

import Stackchat from "@stackchat/web-messenger";

Stackchat.init({ appId: "<app-id>" }).then(function () {
  // YOUR CODE AFTER INIT IS COMPLETE
});

Browser Support

Stackchat Web Messenger supports all the popular browsers

Desktop

Chrome : Latest and one major version behind
Edge : Latest and one major version behind
Firefox : Latest and one major version behind
Internet Explorer : 11+
Safari : Latest and one major version behind

Mobile

Stock browser on Android 4.1+
Safari on iOS 8+

Other Browsers

Stackchat Web Messenger is likely compatible with other and older browsers but we only test against the versions above.

Voice Support

Stackchat Web Messenger supports speech recognition where available. This is essentially limited to browsers that have implemented the W3C Media Stream API and where access to a recording instrumentation on a device is available. For this reason, if you are using speech recognition, please be aware that there may be compatibility issues with older browsers.

API

Individual Functions

init(options)

Initializes the Stackchat Web Messenger widget in the web page using the specified options. It returns a promise that will resolve when the Web Messenger is ready. Note that except on and off, all other methods need to be called after a successful init.

options

Option	Optional?	Default value	Description
appId	No	-	Your app id
voice	Yes	-	See `voice` section below
locale	Yes	`en-US`	Locale used for date formatting using the `<language>-<COUNTRY>` format. Language codes can be found here and country codes here. Note 1 : The country part is optional, and if a country is either not recognized or supported, it will fallback to using the generic language. If the language isn't supported, it will fallback to `en-US`. Note 2: this is only used for date formatting and doesn't provide built-in translations for Web Messenger.
soundNotificationEnabled	Yes	`true`	Enables the sound notification for new messages
imageUploadEnabled	Yes	`true`	Enables the image upload feature. (deprecated: use menuItems.imageUpload; if this option is `false`, it will disable `menuItems.imageUpload` and `menuItems.fileUpload`)
fixedIntroPane	Yes	`false`	When enabled, the introduction pane will be pinned at the top of the conversation instead of scrolling with it.
embedded	Yes	False	Tells the widget it will be embedded. (see Embedded section below)
displayStyle	Yes	`button`	Choose how the messenger will appear on your website. Must be either `button` or `tab`.
buttonIconUrl	Yes	-	When the `displayStyle` is `button`, you have the option of selecting your own button icon. The image must be at least 200 x 200 pixels and must be in either JPG, PNG, or GIF format.
buttonWidth	Yes	`58px`	When the `displayStyle` is `button`, you have the option of specifying the button width.
buttonHeight	Yes	`58px`	When the `displayStyle` is `button`, you have the option of specifying the button height.
businessName	Yes	-	A custom business name.
businessIconUrl	Yes	-	A custom business icon url. The image must be at least 200 x 200 pixels and must be in either JPG, PNG, or GIF format.
backgroundImageUrl	Yes	-	A background image url for the conversation. Image will be tiled to fit the window.
integrationOrder	Yes	-	Array of integration IDs. When set, only integrations from this list will be displayed. If an empty array is used, no integrations will be displayed. Note: Listing an integration in the array doesn't guarantee that it will be displayed in the Web Messenger.
customColors	Yes	See below	Colors used in the Web Messenger UI.
customText	Yes	See below	Strings used in the Web Messenger UI. You can use these to either customize the text or translate it. Note: Some strings include variables (surrounded by `{}`) which must remain in your customized text.
menuItems	Yes	See below.	Choose menu items.
notificationChannelPromptEnabled	Yes	`true`	Enables displaying a prompt to new users after their first message to suggest linking their chat instance with their other 3rd-party apps.

customColors

Option	Optional?	Default value	Description
brandColor	Yes	`65758e`	This color will be used in the messenger header and the button or tab in idle state. Must be a 3 or 6-character hexadecimal color.
conversationColor	Yes	`0099ff`	This color will be used for customer messages, quick replies and actions in the footer. Must be a 3 or 6-character hexadecimal color.
actionColor	Yes	`0099ff`	This color will be used for call-to-actions inside your messages. Must be a 3 or 6-character hexadecimal color.

customText

The list of localizable strings. These strings can be modified. If an option is not given a custom string, the default value will be used.

Option	Default value
clickToRetry	Message not delivered. Click to retry.
connectNotificationText	Be notified inside your other apps when you get a reply.
connectNotificationSingleText	Be notified when you get a reply.
connectNotificationSingleButtonText	Turn on `<name>` notifications
connectNotificationOthersText	others
conversationTimestampHeaderFormat	MMMM D YYYY, h:mm A
fetchHistory	Load more
fetchingHistory	Retrieving history...
headerText	How can we help?
imageClickToReload	Click to reload image.
imageClickToView	Click to view {size} image.
imagePreviewNotAvailable	Preview not available.
inputPlaceholder	Type a message...
introAppText	Message us below or from your favorite app.
introductionText	We're here to talk, so ask us anything!
messageError	An error occured while sending your message. Please try again.
messageIndicatorTitlePlural	(`{count}`) New messages
messageIndicatorTitleSingular	(`{count}`) New message
messageRelativeTimeDay	`{value}`d ago
messageRelativeTimeHour	`{value}`h ago
messageRelativeTimeJustNow	Just now
messageRelativeTimeMinute	`{value}`m ago
messageTimestampFormat	h:mm A
messageSending	Sending...
messageDelivered	Delivered
sendButtonText	Send
settingsHeaderText	Settings
tapToRetry	Message not delivered. Tap to retry.
unsupportedMessageType	Unsupported message type.
unsupportedActionType	Unsupported action type.
voiceConnecting	Please wait...
voiceListening	I'm listening...
voiceNoSpeechDetected	No speech detected.
voiceNoMicrophoneAccess	Microphone access disabled.

See below for an example:

var initPromise = stackchat
  .init({
    appId: "<app-id>",
    // Leave unspecified for US region (default)
    region: "au",
    // For authenticated mode
    jwt: "your_jwt",
    userId: "user_id",
    locale: "en-US",
    customColors: {
      brandColor: "65758e",
      conversationColor: "65758e",
      actionColor: "65758e",
    },

    fixedIntroPane: false,

    customText: {
      clickToRetry: "Message not delivered. Click to retry.",
      connectNotificationText:
        "Be notified inside your other apps when you get a reply.",
      connectNotificationSingleText: "Be notified when you get a reply.",
      connectNotificationSingleButtonText: "Turn on <name> notifications",
      connectNotificationOthersText: "others",
      conversationTimestampHeaderFormat: "MMMM D YYYY, h:mm A",
      fetchHistory: "Load more",
      fetchingHistory: "Retrieving history...",
      headerText: "How can we help?",
      imageClickToReload: "Click to reload image.",
      imageClickToView: "Click to view {size} image.",
      imagePreviewNotAvailable: "Preview not available.",
      inputPlaceholder: "Type a message...",
      introAppText: "Message us below or from your favorite app.",
      introductionText: "We're here to talk, so ask us anything!",
      messageError:
        "An error occured while sending your message. Please try again.",
      messageIndicatorTitlePlural: "({count}) New messages",
      messageIndicatorTitleSingular: "({count}) New message",
      messageRelativeTimeDay: "{value}d ago",
      messageRelativeTimeHour: "{value}h ago",
      messageRelativeTimeJustNow: "Just now",
      messageRelativeTimeMinute: "{value}m ago",
      messageTimestampFormat: "h:mm A",
      messageSending: "Sending...",
      messageDelivered: "Delivered",
      sendButtonText: "Send",
      settingsHeaderText: "Settings",
      tapToRetry: "Message not delivered. Tap to retry.",
      unsupportedMessageType: "Unsupported message type.",
      unsupportedActionType: "Unsupported action type.",
    },
  })
  .then(function () {
    // Your code after init is complete
  });

initPromise.then(function () {
  // do something
});

// pass it around...

initPromise.then(function () {
  //do something else
});

voice

The web-messenger will support Speech Recognition if the service has been made available to the user, to enable it there is a voice configuration object that can be passed in by the user to the init method.

Option	Optional?	Default value	Description
voiceOnly	Yes	`false`	Disables the text input and replaces it with a push to talk button
voiceOnlyFallback*	Yes	`text`	If voice only is set to true and the client device does not support voice then this option will handle what to do for those unsupported devices, options are `text`, `destroy` or a function that returns either of those values
locale	Yes	en_us	Set the voice support language, must conform to BCP-47

voiceOnlyFallback - The two options for fallback are text or destroy, the text fallback will revert the application to a basic keyboard based input, while destroy will fail the initialization of the app and prevent the widget from being instantiated, this option is for users that only want to support voice and display nothing in all other instances.

open()

Opens the conversation widget (no-op when embedded)
```
stackchat.open();
```
close()

Closes the conversation widget (no-op when embedded)
```
stackchat.close();
```
isOpened()

Tells if the widget is currently opened or closed.
```
stackchat.isOpened();
```
destroy()

Destroys the Web Messenger and makes it disappear. The Web Messenger has to be reinitialized with init to be working again because it also clears up the app id from the Web Messenger. It will also unbind all listeners you might have with stackchat.on.
```
stackchat.destroy();
```

sendMessage(message)

Sends a message on the user's behalf

stackchat.sendMessage({
  type: "text",
  text: "hello",
});

// OR

stackchat.sendMessage("hello");

getConversation()

Returns the conversation if it exists
```
var conversation = stackchat.getConversation();
```
startConversation()

Creates a user and conversation on the server, allowing the business to reach out proactively to the user via the public API.

It is strongly recommended to only call this method in the case where a message is likely to be sent.

This method is called automatically when starting a conversation via the sendMessage method, or when a user sends a message via the conversation view.

If a conversation already exists for the current user, this call is a no-op.
```
stackchat.startConversation();
```
setPredefinedMessage(message)

Prefills the user's chat input with a predefined message.
```
stackchat.setPredefinedMessage(message);
```
simulateMessage(message, ?avatar)

Simulates a message to the client without ever sending one to the server, these messages will not be persisted between sessions.

Takes in an optional second parameter for displaying an avatar associated with the message, this will default to gravatar's empty gray user icon if left blank.
```
stackchat.simulateMessage(message);
```

simulateMessage(messageObject, ?avatar)

Simulates a message which has specified predefined reply options.

stackchat.simulateMessage({
  message: "Would you like an ice cream?",
  actions: ["Yes", "No"],
});

triggerPostback(payload, metadata)

Manually trigger a postback message on the users behalf.

stackchat.triggerPostback(payload, metadata).then(() => {
  console.log("postback sent");
});

showActivityIndicator(?avatar)

Simulates the behaviour of the bot typing. Shows up as flickering three dots in a message bubble.
hideActivityIndicator()

Removes the typing indicator from the conversation so that the conversation may proceed.
openSpeechRecognitionModal()

Opens up the user speech recognition prompt and begins listening for a user command, this can't be called before the messenger client has finished it's initialisation.
```
stackchat.init({...}).then(() => {
    document.getElementById("open-modal").addEventListener("click", () => {
        stackchat.openSpeechRecognitionModal();
    });
})
```
closeSpeechRecognitionModal()

Closes the modal and aborts the current recognition event
```
stackchat.closeSpeechRecognitionModal();
```
setDelegate(delegate)

See the section on Delegates below
updateAnalyticsId

By default, a user's unique Stackchat ID will be used when your chatbot sends server-side requests to your configured analytics integrations. However, you may want to override this behaviour so that Stackchat uses a different ID, such as the visitor ID that your website has assigned to the user. This is helpful to get a single view of user behaviour across both website and chatbot.

Adobe Analytics

If you've configured Adobe Analytics report suite for your Stackchat bot, then you can call updateAnalyticsId method with the below parameter in order to override the visitor ID that your chatbot uses when making server-side requests to Adobe Analytics. If you have server-side forwarding to Adobe Audience Manager configured, then you need to include the regionId, otherwise it is not required
```
stackchat.updateAnalyticsId({
  adobeAnalytics: {
    experienceCloudVisitorId: "ENTER_YOUR_VISITOR_ID_HERE",
    regionId: "ENTER_YOUR_REGION_ID_HERE",
  },
});
```
- Populate experienceCloudVisitorId property with a value fetched from getMarketingCloudVisitorId
- Populate regionId property with a value fetched from getLocationHint
- Note: One API call is made to Adobe Analytics for every message received from the user.
hasConversationStarted()

Returns a boolean that when true indicates the a user has previously started a conversation and false when they have not, this is useful for those times when you might want to execute some behaviours depending on whether a user has or has not interacted with the widget yet.

 const hasStarted = stackchat.hasConversationStarted();
 
 if (hasStarted) {
   // Conversation started, do something...
 } else {
   // Converstaion not yet started, do something...
 }

Delegates

Stackchat Web Messenger allows you to set a delegate to receive callbacks when important changes happen in the conversation. To set a delegate, use the following setDelagate method:

stackchat.setDelegate(delegate);

Delegates should be set after stackchat.init has been called, like so:

stackchat.init({ appId: '<app-id>' })
  .then(
    () => {
      stackchat.setDelegate(...)
    }
  )

You can use the one or more of the following delegates:

beforeDisplay

The beforeDisplay delegate allows a message to be hidden or modified before it is displayed in the conversation. This delegate should return a falsy value such as null to hide the message. It can also return a modified message object in order to change what the user will see rendered in their conversation history. Note that this change affects the client side rendering only; the server side copy of this message can not be modified by this delegate.
```
stackchat.setDelegate({
  beforeDisplay(message) {
    if (message.metadata && message.metadata.isHidden) {
      return null;
    }

    return message;
  },
});
```
beforeSend

The beforeSend delegate method allows you to modify properties of a message before sending it to stackchat. The modified message must be returned for it to take effect.
```
stackchat.setDelegate({
  beforeSend(message) {
    // YOUR CODE HERE

    return modifiedMessage;
  },
});
```
beforePostbackSend

The beforePostbackSend delegate method allows you to modify properties of a postback before sending it to stackchat. The modified postback must be returned for it to take effect.
```
stackchat.setDelegate({
  beforePostbackSend(postback) {
    postback.metadata = {
      any: "info",
    };
    return postback;
  },
});
```

beforeWebviewDisplay

stackchat.setDelegate({
  beforeWebviewDisplay(url, message, event) {
    console.log(url);
    return false; // to cancel action
    // return;    // to allow original behavior, e.g. a no-op
    // return 'http://go.here.instead.com?utm=webviewIntercept' // to replace the URL
  },
});

The metadata parameter has the following structure:

metadata = {
  event, // The click event from the browser
};

Events

To bind an event, use stackchat.on(<event name>, <handler>);. To unbind events, you can either call stackchat.off(<event name>, handler) to remove one specific handler, call stackchat.off(<event name>) to remove all handlers for an event, or call stackchat.off() to unbind all handlers.

Note: If you want to make sure your events are triggered, try to bind them before calling stackchat.init, like so:

stackchat.on('<event-1>', function() { ... });
stackchat.on('<event-2>', function() { ... });
stackchat.on('<event-3>', function() { ... });

stackchat.init(...).then(function() {
    // Your code after init is complete
});

ready

This event triggers when init completes successfully

stackchat.on("ready", function () {
  console.log("the init has completed!");
});

destroy

This event triggers when the widget is destroyed.
```
stackchat.on("destroy", function () {
  console.log("The widget is destroyed!");
});
```
This is triggered in response to stackchat.destroy()

message:received

This event triggers when the user receives a message

stackchat.on("message:received", function (message) {
  console.log("The user received a message", message);
});

message:sent

This event triggers when the user sends a message

stackchat.on("message:sent", function (message) {
  console.log("The user sent a message", message);
});

message

This event triggers when a message was added to the conversation

stackchat.on("message", function (message) {
  console.log("A message was added to the conversation", message);
});

unreadCount

This event triggers when the number of unread messages changes

stackchat.on("unreadCount", function (unreadCount) {
  console.log("The number of unread messages was updated", unreadCount);
});

widget:opened

This event triggers when the widget is opened

stackchat.on("widget:opened", function () {
  console.log("Widget is opened!");
});

widget:closed

This event triggers when the widget is closed

stackchat.on("widget:closed", function () {
  console.log("Widget is closed!");
});

speech:start

This event triggers when the widget starts recording voice input

stackchat.on("speech:start", function () {
  console.log("Widget is recording now!");
});

speech:end

This event triggers when the widget stops recording voice input

stackchat.on("speech:end", function () {
  console.log("Widget has stopped recording now!");
});

speech:error

This event triggers when the widget encounters an error while recording voice input

stackchat.on("speech:error", function (error) {
  console.log(error.type, error.message);
});

Embedded Mode

As describe above, to activate the embedded mode, you need to pass embedded: true when calling stackchat.init. By doing so, you are disabling the auto-rendering mechanism and you will need to call stackchat.render manually. This method accepts a DOM element which will be used as the container where the widget will be rendered.

The embedded widget will take full width and height of the container. You must give it a height, otherwise, the widget will collapse.

Content Security Policy

If your deployment requires CSP compatibility, add the following meta tag to your configuration.

<meta
  http-equiv="Content-Security-Policy"
  content="
    connect-src
        wss://*.stackchat.com
        https://*.stackchat.com;
    font-src
        https://*.stackchat.com;
    script-src
        https://*.stackchat.com;
    style-src
        https://*.stackchat.com;
    img-src
        blob:
        https://*.stackchat.com;"
/>

Note that an equivalent configuration can be done server side.

According to the channels you use, other domains may need to be added (these are used to display QR codes to link to the Stackchat Web Messenger conversation):

LINE: https://qr-official.line.me
WeChat: https://mp.weixin.qq.com

Note that your CSP configuration should also include any domains used to host images or files sent in messages. If you require blob: to be excluded for img-src, you must disable the image upload feature via the init settings.

Acknowledgements

https://github.com/lipis/flag-icon-css

Name		Name	Last commit message	Last commit date
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types.d.ts		types.d.ts

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Stackchat Web Messenger

Table of Contents

Usage

Script

NPM

Browser Support

Desktop

Mobile

Other Browsers

Voice Support

API

Individual Functions

Delegates

Events

Embedded Mode

Content Security Policy

Acknowledgements

About

Uh oh!

Releases 2

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stackchat-ai/web-messenger

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Stackchat Web Messenger

Table of Contents

Usage

Script

NPM

Browser Support

Desktop

Mobile

Other Browsers

Voice Support

API

Individual Functions

Delegates

Events

Embedded Mode

Content Security Policy

Acknowledgements

About

Resources

Uh oh!

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Forks

Releases 2

Packages 0

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