@livechat/widget-angular

@livechat/widget-angular

This library allows to render and interact with the LiveChat Chat Widget inside an Angular application.

Installation

Using npm:

npm install @livechat/widget-angular

or using yarn:

yarn add @livechat/widget-angular

Usage

Render

// app.module.ts

import { NgModule } from '@angular/core'
import { LiveChatWidgetModule } from '@livechat/widget-angular'

@NgModule({
  /* ... */
  imports: [LiveChatWidgetModule],
})
export class AppModule {}

// app.component.ts

import { Component } from '@angular/core'
import { EventHandlerPayload } from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent {
  handleNewEvent(event: EventHandlerPayload<'onNewEvent'>) {
    console.log('LiveChatWidget.onNewEvent', event)
  }
}

<!-- app.component.html -->
<livechat-widget
  license="12345678"
  visibility="maximized"
  (onNewEvent)="handleNewEvent($event)"
></livechat-widget>

Assignable properties

Config data

All properties described below are used for initialization on the first render and later updates of the chat widget with new values on change.

Prop	Type
license	string (required)
customerName	string
group	string
customerEmail	string
chatBetweenGroups	boolean
sessionVariables	Record<string, string>
visibility	'maximized' | 'minimized' | 'hidden'
customIdentityProvider	() => CustomerAuth

CustomerAuth:

parameters	type	description
getFreshToken	() => Promise	Should resolve with freshly requested customer access token.
getToken	() => Promise	Should resolve with currently stored customer access token.
hasToken	() => Promise	Should resolve with a boolean value representing if a token has been already acquired.
invalidate	() => Promise	Should handle token invalidation and/or clearing the locally cached value.

Event handlers

All event handlers listed below are registered if provided for the first time. They unregister on the component cleanup or the property value change. Descriptions of all events are available after clicking on the associated links.

• onReady
• onAvailabilityChanged
• onVisibilityChanged
• onCustomerStatusChanged
• onNewEvent
• onFormSubmitted
• onRatingSubmitted
• onGreetingDisplayed
• onGreetingHidden
• onRichMessageButtonClicked

Services

The LiveChatWidgetModule, exported from this package, registers a set of injectable services. All of them expose a subscribable BehaviorSubject instance. It allows consuming reactive data from the chat widget in any place of the application, as long as the LiveChatWidget component is rendered in the tree.

WidgetStateService

Access the current chat widget availability or visibility state if the chat widget is loaded.

// app.component.ts

import { Component, OnInit } from '@angular/core'
import {
  WidgetStateService,
  WidgetStateSubject,
} from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit {
  widgetState$: WidgetStateSubject

  constructor(widgetStateService: WidgetStateService) {
    this.widgetState$ = widgetStateService.subject
  }

  ngOnInit() {
    this.widgetState$.subscribe((widgetState) => {
      console.log('AppComponent.ngOnInit.widgetState', widgetState)
    })
  }
}

<!-- app.component.html -->

<div *ngIf="widgetState$ | async as widgetState">
  <div>{{ widgetState.availability }}</div>
  <div>{{ widgetState.visibility }}</div>
</div>

WidgetIsReadyService

Check if the chat widget is ready using the boolean flag isWidgetReady.

// app.component.ts

import { Component, OnInit } from '@angular/core'
import {
  WidgetIsReadyService,
  WidgetIsReadySubject,
} from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit {
  widgetIsReady$: WidgetIsReadySubject

  constructor(widgetIsReadyService: WidgetIsReadyService) {
    this.widgetIsReady$ = widgetIsReadyService.subject
  }

  ngOnInit() {
    this.widgetIsReady$.subscribe((widgetIsReady) => {
      console.log('AppComponent.ngOnInit.widgetIsReady', widgetIsReady)
    })
  }
}

<!-- app.component.html -->

<div>{{ widgetIsReady$ | async }}</div>

WidgetChatDataService

Access the chatId and threadId of the chat if there's one currently available.

// app.component.ts

import { Component, OnInit } from '@angular/core'
import {
  WidgetChatDataService,
  WidgetChatDataSubject,
} from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit {
  chatData$: WidgetChatDataSubject

  constructor(chatDataService: WidgetChatDataService) {
    this.chatData$ = chatDataService.subject
  }

  ngOnInit() {
    this.chatData$.subscribe((chatData) => {
      console.log('AppComponent.ngOnInit.chatData', chatData)
    })
  }
}

<!-- app.component.html -->

<div *ngIf="chatData$ | async as chatData">
  <div>{{ chatData.availability }}</div>
  <div>{{ chatData.visibility }}</div>
</div>

WidgetGreetingService

Access the current greeting id and uniqueId if one is currently displayed (received and not hidden).

// app.component.ts

import { Component, OnInit } from '@angular/core'
import {
  WidgetGreetingService,
  WidgetGreetingSubject,
} from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit {
  greeting$: WidgetGreetingSubject

  constructor(greetingService: WidgetGreetingService) {
    this.greeting$ = greetingService.subject
  }

  ngOnInit() {
    this.greeting$.subscribe((greeting) => {
      console.log('AppComponent.ngOnInit.greeting', greeting)
    })
  }
}

<!-- app.component.html -->

<div *ngIf="greeting$ | async as greeting">
  <div>{{ greeting.availability }}</div>
  <div>{{ greeting.visibility }}</div>
</div>

WidgetCustomerDataService

Access the id, isReturning, status, and sessionVariables of the current customer if the chat widget is loaded.

// app.component.ts

import { Component, OnInit } from '@angular/core'
import {
  WidgetCustomerDataService,
  WidgetCustomerDataSubject,
} from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit {
  customerData$: WidgetCustomerDataSubject

  constructor(customerDataService: WidgetCustomerDataService) {
    this.customerData$ = customerDataService.subject
  }

  ngOnInit() {
    this.customerData$.subscribe((customerData) => {
      console.log('AppComponent.ngOnInit.customerData', customerData)
    })
  }
}

<!-- app.component.html -->

<div *ngIf="customerData$ | async as customerData">
  <div>{{ customerData.id }}</div>
  <div>{{ customerData.isReturning }}</div>
  <div>{{ customerData.status }}</div>
  <ul>
    <li *ngFor="let variable of customerData.sessionVariables | keyvalue">
      {{ variable.value }}
    </li>
  </ul>
</div>

Custom Identity Provider

In order to make Custom Identity Provider work, you'll have to properly implement and provide a set of following methods:

• getToken - resolving Chat Widget token. If you want to cache the token, this should return the cached token instead of a fresh request to https://accounts.livechat.com/customer/token endpoint.
• getFreshToken - resolving Chat Widget token. This should always make a call for a fresh token from https://accounts.livechat.com/customer/token endpoint.
• hasToken - resolving boolean. It determines whether a token has been acquired.
• invalidate - resolving nothing. When called, it should remove the current token. There is no need to do anything else as a new token will be requested by getFreshToken afterwards.

Example usage

// app.component.ts

import { Component } from '@angular/core'
import { EventHandlerPayload } from '@livechat/widget-angular'

@Component({
  /* ... */
  templateUrl: './app.component.html',
})
export class AppComponent {
  customIdentityProvider() {
    const baseAPI = 'YOUR_API_URL'
    const userId = '30317220-c72d-11ed-2137-0242ac120002'

    const getToken = async () => {
      const response = await fetch(`${baseAPI}/getToken/${userId}`)

      const token = await response.json()
      console.log('getToken', token)
      return token
    }

    const getFreshToken = async () => {
      const response = await fetch(`${baseAPI}/getFreshToken/${userId}`)

      const token = await response.json()
      console.log('getFreshToken', token)
      return token
    }

    const hasToken = async () => {
      const response = await fetch(`${baseAPI}/hasToken/${userId}`)
      const data = await response.json()
      return data
    }

    const invalidateToken = async () => {
      const response = await fetch(`${baseAPI}/invalidate/${userId}`)
      const data = await response.json()
      console.log(data)
    }

    return {
      getToken,
      getFreshToken,
      hasToken,
      invalidate: invalidateToken,
    }
  }
}

<!-- app.component.html -->
<livechat-widget
  license="12345678"
  visibility="maximized"
  [customIdentityProvider]="customIdentityProvider"
></livechat-widget>

For more information about Custom Identity Provider, check out https://developers.livechat.com/docs/extending-chat-widget/custom-identity-provider

Contributing

Pull requests are welcome. For major changes, please open an issue first, so we can discuss what you would like to change. Follow a Contributing guide for more details.

License

The code and documentation in this project are released under the MIT License.