Developer Guide

This document outlines the steps required to configure the wallet service

Backend Developer Guide:

Architecture

The Wallet App backend is built using NestJS and follows a modular, adapter-based design. This allows easy integration with different wallet service providers. Currently, the backend integrates with Dhiway Wallet Services.

• Language/Framework: TypeScript with NestJS

• Database: PostgreSQL (via TypeORM)

• Authentication: JWT Bearer Token

• Adapter Layer: Used for integration with wallet providers

Key Features

• User Registration and Login via API

• Fetch Verifiable Credentials (VCs) from provider

• Upload VC using QR Code

• Extensible Adapter Layer to support new wallet providers

• Bearer Token Authentication

• Modular Provider Configuration through environment variables

Backend Modules (NestJS)

• auth/ – Handles login, registration, token issuance

• wallet/ – Core logic for interacting with external wallet APIs

• users/ – User model, schema, and services

adapters/ – Wallet-specific adapters (currently: Dhiway Adapter)