Nextpay

Nextpay is a fintech platform , enabling users to manage their accounts, add balances, and perform peer-to-peer (P2P) transfers.

Features

• User account creation and management
• Secure authentication using NextAuth
• Integration with a bank webhook server for transaction confirmation
• Account balance management
• Peer-to-peer (P2P) transfers between user accounts

Tech Stack

• Next.js for the frontend and API routes
• NextAuth for authentication
• Prisma as the ORM
• Turborepo for monorepo management
• Express.js for the bank webhook server

Project Structure

This project is set up as a Turborepo monorepo with the following structure:

nextpay/
├── apps/
│   ├── bank-webhook/             # Express Server
│   └── merchant-app/             # Yet to build ( dont run it )
│   └── user-app/                 # Nextjs Application
├── packages/
│   └── ...                       # UI packages / Config files / recoil 
│   └── db/              
│     └── schema.prisma           # Prisma schema
└── package.json

Getting Started

Prerequisites

Docker

Installation

docker build -t nextpay .
docker run -p 3000:3000 nextpay

Usage

There are 2 test accounts, Try login into any of them

1. Number - 1111111111 Password - Alice

2. Number - 2222222222 Password - Bob

go to /transfer endpoint to add balance to the account
and it will initiate the transfer then run the bank-webhook and manually post the transaction details to finally add the balance

for p2p transaction , go to /p2p add the number of the other test account and the amount to transfer , if the amount is sufficient , it will make a successful transaction

Webhook Server

The bank webhook server is built with Express.js and has the following endpoint:

• POST /hdfcWebhook: Endpoint for receiving transaction confirmations from HDFC bank

Contributing

It is an Open source repository feel free to fix ui , bugs and errors . I have built github ci/cd pipelines to check the build and linting errors