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Using Javascript Core

Javascript Core package wraps the REST API calls into easy to use functions for any Javascript app. With this package, you can build Notification Inbox, Subscribe users to web push, build preference manager etc.

tip

Javascript core library doesn't provide any UI components. If you're looking for UI-Kit for Javascript, you should use our React component or Browser Javascript UI Kit.

Quick Setup

Before we start, make sure you have Engagespot API Key from your dashboard. Now, let's install the core package, and initialize.

npm i @engagespot/core --save

#or

yarn add @engagespot/core

Now let's add this library to a project with basic configurations.

import Engagespot from '@engagespot/core';

const engagespot = new Engagespot('YOUR_ENGAGESPOT_API_KEY', {
userId: '[email protected]',
});

const notificationList = engagespot.getNotificationList();
await notificationList.fetch();
notificationList.data.forEach(notification => {
console.log(notification.title, notification.message);
});

Engagespot Class

This class is used to create a new Engagespot instance.

Constructor

The constructor accepts the following arguments.

PropertyTypeDescription
apiKeystringEngagespot API Key
optionsObjectOptions Object. (Properties explained below)
options.userIdstringAny unique identifier to identify your app user
options.userSignaturestringRequired if your app has HMAC Authentication turned on.
options.serviceWorkerRegistrationServiceWorkerRegistrationUse this if your app has an existing Service Worker Registration

Fetching Notifications

To fetch notification list, you should use the getNotificationList() method, which returns the NotificationList object. Note that, the NotificationList object will be empty, and you need to call the fetch() method to pull the latest notification data from server.

We've seen this in the example above. After calling fetch() which returns Promise<this>, you can access the notifications from data[]

Let's learn more about NotificationList class below.

NotificationList Class

Notification list is a collection of Notifications. It implements the NotificationItem interface.

export interface NotificationList {
unreadCount: number;
totalCount: number;

data: NotificationItem[];

fetch: (page: number, itemsPerPage: number) => Promise<this>;
markAllAsSeen: () => Promise<this>;
}

Properties

The NotificationList interface has the following properties.

unreadCount

Number of unseen notifications in the list.

totalCount

Total number of notifications in the list

Methods

fetch

Fetches the notifications from the server and add them to the data[] property.

NotificationItem Interface

NotificationItem interface represents a single notification entity. It has several properties and methods to do actions on that particular notification.

interface NotificationItem {
id: string;
title: string;
message?: string | null;
icon?: string | null;
url?: string | null;
seenAt?: string | null;
clickedAt?: string | null;
createdAt?: string | null;
data?: T | null;

fetch?: () => Promise<this>;
markAsClicked?: () => Promise<this>;
delete? () => Promise<this>
}

Properties

The NotificationItem interface has the following properties.

id

Id of the notification

title

Title of the notification

message

Body of notification. This can be null.

icon

URL of the notification icon. This can be null.

seenAt

Timestamp of seen event of this notification. This can be null.

clickedAt

Timestamp of click event of this notification. This can be null.

createdAt

Timestamp of created event of this notification.

data

The data object passed to the send notifications API.

Methods

The NotificationItem interface has the following methods.

fetch

Calls GET /notifications/:notificationId API and sets the properties of this class.

markAsClicked

Calls POST /notifications/:notificationId/click API and marks this notification as clicked.

delete

Calls DELETE /notifications/:notificationId API and deletes this notification.

Events

Engagespot Core emits several events which you can susbcribe to do custom actions.

onNotificationReceive

import Engagespot from '@engagespot/core';

const engagespot = new Engagespot('YOUR_ENGAGESPOT_API_KEY', {
userId: '[email protected]',
});

engagespot.onNotificationReceive(notification => {
//You'll get the notification object.
});

onNotificationClick

import Engagespot from '@engagespot/core';

const engagespot = new Engagespot('YOUR_ENGAGESPOT_API_KEY', {
userId: '[email protected]',
});

engagespot.onNotificationClick(notification => {
//You'll get the notification object.
});

onNotificationDelete

import Engagespot from '@engagespot/core';

const engagespot = new Engagespot('YOUR_ENGAGESPOT_API_KEY', {
userId: '[email protected]',
});

engagespot.onNotificationDelete(notification => {
//You'll get the notification object.
});

onNotificationSee

import Engagespot from '@engagespot/core';

const engagespot = new Engagespot('YOUR_ENGAGESPOT_API_KEY', {
userId: 'youru[email protected]',
});

engagespot.onNotificationSee(notification => {
//You'll get the notification object.
});