A Controller that sits between the view and the backend service.

cardController.js

var flutterwave = require("../chargeCardService.js"); 

//Note: The api key and merchant key are stored in the environmental variable '.env'
module.exports = {
    cardChargeWithPin: function (req, res, next) {
        var data = {
            "merchantid": process.env.test_merchant_key, //[YOUR_MERCHANT_KEY]
            "amount": flutterwave.encrypt(process.env.test_api_key, req.body.amount), //amount to charge encrypted
            "cardno": flutterwave.encrypt(process.env.test_api_key, req.body.cardno), //card no. of the user encrypted
            "cvv": flutterwave.encrypt(process.env.test_api_key, req.body.cvv), //card cvv encrypted
            "authmodel": flutterwave.encrypt(process.env.test_api_key, req.body.authmethod), //authmodel here is PIN
            "currency": flutterwave.encrypt(process.env.test_api_key, req.body.currency),//currency to charge in, encrypted
            "country": flutterwave.encrypt(process.env.test_api_key, req.body.country), //route country encrypted
            "custid": flutterwave.encrypt(process.env.test_api_key, req.body.custid), //uniqid  encrypted
            "expirymonth": flutterwave.encrypt(process.env.test_api_key, req.body.expirymonth), //card expiry month encrypted
            "expiryyear": flutterwave.encrypt(process.env.test_api_key, req.body.expiryyear), //card expiry year encrypted
            "narration": flutterwave.encrypt(process.env.test_api_key, req.body.narration),//short description about the transaction
            "pin": flutterwave.encrypt(process.env.test_api_key, req.body.pin) //card pin encrypted

        };

      
        flutterwave.chargeCardWithPin(data).then(function (response) {  //calling our chargeCardService.js
            if (response) {
                return res.json(response) //returns to the response as a json to our front view.
            }
        }).catch(function (error) {
            return res.json(error);
        })

    },
    validateCardWithPin: function (req, res) {
        var data = {
            "merchantid": process.env.test_merchant_key, ////[YOUR_MERCHANT_KEY]
            "otp": flutterwave.encrypt(process.env.test_api_key, req.body.otp), //otp sent to the registered phone number of the user encrypted
            "otptransactionidentifier": flutterwave.encrypt(process.env.test_api_key, req.body.oo) //the otp transaction identifier
        };

        flutterwave.validateCardWithPin(data).then(function (response) { //calling the validate service
            return res.json(response);//returns to the response as a json to our front view.
        }).catch(function (error) {
            return res.json(error);
        })
    };
}