PayPal Transaction Fetcher

This project is a simple web application that allows users to fetch their PayPal transaction IDs by providing their email address. The backend is built with Express.js, and the frontend is a basic HTML form with JavaScript for client-side functionality.

Features

• Fetch PayPal transactions securely using OAuth2 token.
• Basic email validation on both client-side and server-side.
• Display transaction IDs on the frontend.

Prerequisites

• Node.js installed on your machine.
• A PayPal Developer account with sandbox credentials (Client ID and Secret).

Installation

1. Clone the repository:

   git clone https://github.com/your-username/paypal-transaction-fetcher.git
   cd paypal-transaction-fetcher

2. Install the required dependencies:

   npm install

3. Create a .env file in the root directory and add your PayPal sandbox credentials:

   PAYPAL_CLIENT_ID=your-client-id
   PAYPAL_CLIENT_SECRET=your-client-secret

Running the Application

1. Start the Express server:

   npm start

2. Open your browser and navigate to http://localhost:3000.

Project Structure

• server.js: Main server file containing all the backend logic.
• public/: Directory containing static files served to the client.
  • index.html: Main HTML file for the frontend.
  • style.css: CSS file for styling the frontend.

Endpoints

POST /api/transactions

Fetches transaction IDs for a given user email.

Request Body

{
  "email": "user@example.com"
}