gepgfun - Gepg emulator, for testing gepg payment/ bill cancellation and control number generating

• mock/test/demo emulator, allowing you to run local tests for payment processing, bill cancellation, and control number generation.
• Supports select endpoints from GEPG API versions 4 and 5.
• Github

Installation

• Install globally via npm to use as a CLI tool:

$ npm i -g gepgfun

Features

• Start an HTTP server to simulate GEPG endpoints for testing.
• Generate control numbers for bills.
• Simulate payment requests using bill details (control number, amount, currency).
• Support for autopay mode.
• Callback mechanisms for receiving control numbers and payment notifications.
• Configurable via command-line arguments or .env file.

Usage

Starting the Server

• Start a basic HTTP server (default port: 3000):

$ gepgfun serve

• Start a HTTP server with autopay enabled:

$ gepgfun serve --autopay

Configuration

Supported Endpoints

• When the server is running (e.g., on localhost:3000), the following endpoints are emulated:

• Control Request Endpoint (v4): http://localhost:3000/api/bill/sigqrequest

• Control Request Endpoint (v5): http://localhost:3000/api/bill/20/submission

• Push Endpoint (v5): http://localhost:3000/api/bill/20/push

Callback Configuration Via .env File

• Callbacks allow the emulator to notify your application about generated control numbers or completed payments.
• Create a .env file in your project root with the following variables:

URL_CONTROL_NUMBER_CALLBACK=http://localhost/api/v1/billing/receive-control-number
URL_PAYMENT_CALLBACK=http://localhost/api/v1/billing/receive-payment

• These URLs will be used for server-initiated callbacks when applicable.

Note: This tool is designed for local testing only and does not connect to the real GEPG system.