SecurePay-GROOVY (PA)

import groovy.json.JsonSlurper
public static String prepareCheckout() {


  def url = "https://test.oppwa.com/v1/checkouts".toURL()

  def connection = url.openConnection()


  connection.setRequestMethod("POST")
  connection.doOutput = true
   String parameters ="authentication.userId=8a8294184f45ce7e014f4b1d16cc12df" +
	        "&authentication.password=j3zCJ2ENaD"+
	        "&authentication.entityId=8a8294184f45ce7e014f4b1d16bd12db" +
          "&paymentType=PA" +
          "&amount=599.99" +
          "&currency=RSD"
  connection.outputStream << parameters
  def json = new JsonSlurper().parseText(connection.inputStream.text)
  json.id

}
println prepareCheckout()