FredSoares / sisp_payments_js

SISP Payment Processing in Node.js

SISP PAYMENTS JS

Introduction

This module simplifies getting started with processing Vinti4, Visa, and Mastercard payments using SISP on Node.js.

Note: You can request SISP credentials, view their documentation, and more here.

// Credentials that should be provided by SISP
const posID = "";
const posAutCode = "";

These credentials are used to allow you to process the payment using SISP payment services.

Getting Started

Module Configuration

Import sisp-payments and create a new instance using your credentials. (obtained from SISP):

const Sisp = require('sisp-payments');

const posID = 900512;
const posAutCode = "123456789ssA";

const sisp = new Sisp({ posID, posAutCode });

Generate Payment Request Form

sisp.generatePaymentRequestForm(referenceId, total, webhookUrl);

Generates and returns an HTML form that can be used to process payments.

• referenceId: Client-generated payment reference ID. This value is sent via a POST request to the webhookUrl and allows the client to correlate the payment request and response.
• total: Payment amount (in CVE).
• webhookUrl: The url where SISP should send the payment response. You should expect a POST request with payment information in the body. See the SISP documentation for more information.

Example

const referenceId = 'abc-123';
const total = 1200;
const webhookUrl = 'https://samba.chuva.io/webhooks/sisp-payment';

const htmlForm = sisp.generatePaymentRequestForm(referenceId, total, webhookUrl);

Validate Payment Processing Status (convenience method)

Check whether or not a payment was processed successfully. Note: This method is provided as a convenience. See the SISP documentation for the request structure.

Usage

Pass the Webhook request body to validatePayment. Returns an error object containing code and description if there is an error, otherwise returns undefined.

validatePayment(responseBody)

Possible Errors

Code: string	Description: string
001	Payment processing error: Invalid fingerprint
002	Payment processing error: Cancelled by user
003	Payment processing error: Processing error

Example

 app.post("/webhook-handler", (request, response) => {
     const error = sisp.validatePayment(request.body);

     if(error === undefined) {
         // Payment processed successfully
     }
     else {
         // Payment processing error
         console.log(error.code);
         console.log(error.description);
     }
 }