This is a simple Express app that allows users to process payments and fetch transactions using Nexio's APIs. The app is built using Node.js and the Express framework.

1. An endpoint to process a card payment through Nexio's processing API.
2. An endpoint to fetch transactions from Nexio's transactions API.

Before you begin, make sure you have the following installed:

• Node.js (version 14.x or higher)
• npm (version 6.x or higher)

1. Clone the repository:

git clone https://github.com/adirksen/Nexio-Assessment.git

2. Change to the project directory:

cd Nexio-Assessment

3. Install the required dependencies:

npm install

4. Create a .env file in the project root directory, and add the following environment variables:

NEXIO_API_USER=your_nexio_user
NEXIO_API_KEY=your_nexio_api_key
NEXIO_API_BASE_URL=https://api.nexiopaysandbox.com
PORT=3000

replace your_nexio_api_key with your actual Nexio API key. replace your_nexio_user with your actual Nexio API user identifier.

1. Start the server:

node app.js

The server will be running at http://localhost:3000.

2. Use the following endpoints:

• Process a payment:

  POST http://localhost:3000/api/payment
  

  Request body example:

  {
      "amount": 10,
      "currency": "USD",
      "expirationMonth": "12",
      "expirationYear": "28",
      "cardType": "amex",
      "cardHolderName": "John H Doe",
      "securityCode": "927", 
      "cardNumber": "4111111111111111"
  }
  

• Fetch transactions (Example):

      GET http://localhost:3000/api/transactions?startDate=2023-01-01&endDate=2023-12-31