var request = require("request");
var appKey="5tunt4masn6pv2hnvte1sb5n3j";
var password="hWD@8vtzw0";
var username="sandboxTestUser";
var appSecret="1vggbqd4hqk9g96o9rrrp2jftvek578v7d2bnerim12a87dbrrka";
var invoiceNumber="mINV00002";
var amount="50";


var options = { method: 'POST',
  url: 'https://checkout.sandbox.bka.sh/v1.0.0-beta/checkout/token/grant',
  headers:
   { password: password,
     username: username },
  body:
   { app_key: appKey,
     app_secret: appSecret },
  json: true };

request(options, function (error, response, body) {
  if (error) throw new Error(error);
 console.log("Get Auth");
	console.log("-------------------------------------------");
	 console.log(body);

  	createPayment(body.id_token);

});



function createPayment(authorizationKey){



var options = { method: 'POST',
  url: 'https://checkout.sandbox.bka.sh/v1.0.0-beta/checkout/payment/create',
  headers:
   { 'x-app-key': appKey,
     authorization: authorizationKey
},
  body:
   {

 merchantInvoiceNumber: invoiceNumber,
     intent: 'Sale',
     currency: 'BDT',
     amount: amount },
  json: true };

request(options, function (error, response, body) {
  if (error) throw new Error(error);


      console.log("Create Payment");
	console.log("-------------------------------------------");
	 console.log(body);


 	executePayment(authorizationKey,body.paymentID);

});

}






function executePayment(authorizationKey,paymentId){

var options = { method: 'POST',
  url: 'https://checkout.sandbox.bka.sh/v1.0.0-beta/checkout/payment/execute/'+paymentId,
  headers:
   { 'x-app-key': appKey,
     authorization:authorizationKey } };

request(options, function (error, response, body) {
  if (error) throw new Error(error);
  console.log("Execute Payment");
	console.log("-------------------------------------------");
  console.log(body);

	queryPayment(paymentId,authorizationKey);

});


}



function queryPayment(paymentId,authorizationKey){

var options = { method: 'GET',
  url: 'https://checkout.sandbox.bka.sh/v1.0.0-beta/checkout/payment/query/paymentId',
  headers:
   { 'x-app-key': 'appKey',
     authorization: 'authorizationKey' } };

request(options, function (error, response, body) {
  if (error) throw new Error(error);
console.log("Query Payment");
	console.log("-------------------------------------------");
  console.log(body);
});

}