Notifi Node (@notifi-network/notifi-node)

This SDK is intended for use with Servers who have obtained a SID / Secret pair from Notifi. Please reach out to us for help on Discord!

This SDK allows you to interact with Notifi Tenant specific services, such as creating users, sending notifications. It is particularly useful when you want to have a custom server-side application. For example, sending notifications automatically when a certain event occurs.

To authenticate with Notifi Node SDK to get the valid auth token, it requires specific server credentials, SID and Secret. You can get these credentials from Notifi Admin Panel --> Account Settings --> Account Keys (top right corner) --> Show Sid/Secret. If you not yet have an Notifi tenant account, feel free to register a new tenant at Notifi Admin Panel for free.

Prerequisites

• Node.js >= 18 (LTS with corresponding npm version)

Usage

Installation

Install @notifi-network/notifi-node package using npm or yarn:

# NPM
npm install @notifi-network/notifi-node
# Yarn
yarn add @notifi-network/notifi-node

Getting Started

Instantiating a NotifiNodeClient

The NotifiNodeClient instance behaves as an proxy of NotifiService which is a wrapper around the Notifi GraphQL API. By interacting with NotifiNodeClient, we can perform various admin leven server methods such as creating users, sending notifications, etc.

It requires to pass in GraphqlClient, DataPlaneClient and SubscriptionService instances in order to instantiate a NotifiService object. The NotifiService object is then passed to the NotifiClient constructor. Example:

import {
  NotifiClient,
  createGraphQLClient,
  createNotifiService,
} from '@notifi-network/notifi-node';

const graphqlClient = createGraphQLClient();
const dpapiClient = createDataplaneClient();
const subService = createNotifiSubscriptionService();
const notifiService = createNotifiService(graphqlClient, subService);

// Instantiate a NotifiNodeClient
const client = new NotifiNodeClient(notifiService, dpapiClient);

NOTE:

• GraphqlClient is used to interact with the Notifi GraphQL Mutations and Queries.
• DataPlaneClient is used to interact with the Notifi Data Plane API.
• SubscriptionService is used to interact with the Notifi Subscription Service.

Login or initialize NotifiNodeClient

In order to utilize the NotifiNodeClient methods, we firstly need to call the logIn by passing the tenant SID and Secret mentioned above. This method initializes the NotifiNodeClient and returns a token and expiry.

If we already have a valid token, we can directly call initialize method by passing the token.

const sid = 'your-notifi-tenant-sid';
const secret = 'your-notifi-tenant-secret';

// Either login
const { token, _expiry } = await client.logIn({
  sid,
  secret,
});

// Or,iff already have a valid token, directly initialize client
await client.initialize(token);

You can obtain the client status by calling client.status.

• If the client is uninitialized, it will return NotifiNodeclientUninitializedState
• If the client is initialized, it will return NotifiNodeclientInitializedState

// uninitialized
const { status } = client.status;

// initialized
const { status, jwt } = client.status;

[!WARNING] Make sure not to expose the SID, Secret and Token (jwt) publicly. Otherwise, it could be abused by malicious users.

Sending a Notification message

Use publishFusionMessage method to send one or more messages to the users. The example below sends a notification to the all users who have subscribed to the event-type-id.

if (!status === 'initialized') throw new Error('Client not initialized');

const messagePayloads = [
  {
    eventTypeId: 'event-type-id',
    variablesJson: {
      /** Could be any shape of object according to the need of template */
      fromAddress: 'from-wallet-address',
      toAddress: 'to-wallet-address',
      amount: 'amount',
      currency: 'ETH',
    },
    // Passing `specificWallets` optionally if you want to send to specific users. By default, it sends to all users who have subscribed to the `event-type-id`.
    // specificWallets: [{
    //   walletBlockchain: 'ETHEREUM',
    //   walletPublicKey: 'user-wallet-public-key',
    // }]
  },
];

const result = await client.publishFusionMessage(fusionMessages);

NOTE:

• The variablesJson parameter is the set of variables that will be used when rendering your templates. If you have a variable fromAddress, for example, you can display it in the template with the expression {{ eventData.fromAddress }}

Receiving active alerts under a tenant

Use getActiveAlerts method to get all active alerts under the tenant.

const first = 10; // Number of alerts to fetch
const after = 'the-cursor'; // Cursor to fetch the alerts after
const result = client.getActiveAlerts({ first, after, fusionEventIds });

You can get the cursor (in PageInfo) from the result object to fetch the next set of alerts.

Listening to events

Using addEventListener method allows to monitor the tenantActiveAlertChanged event.

Listening to event

const id = client.addEventListener(
  'tenantActiveAlertChanged',
  eventHandler,
  errorHandler,
);

const eventHandler = (event) => {
  console.info('Event received:', event);
};
const errorHandler = (error: Error) => {
  console.error('Error occurred', error);
};

Removing event listener

client.removeEventListener('tenantActiveAlertChanged', id);

Contributing & Testing

We welcome and appreciate your contributions! Please review our contribution guidelines before getting started.

To ensure a smooth contribution process, please follow the steps below to confirm that all tests pass before submitting your changes:

• Fill in the credentials in the .env.example file and rename it to .env.
• Run npm run test to execute all tests.

If your contribution includes a new feature, you may also want to create a dedicated test case within the __tests__/NotifiNodeClient.test.ts file to validate its functionality.

More example

• notifi-node-sample: An example demonstrating how to use the @notifi-network/notifi-node package on express.js server.