ussd.rb

require 'sinatra'
require 'AfricasTalkingGateway'

# gateway = AfricasTalkingGateway.new("username", "apikey");

post '/ussd' do
  @sessionId   = params[:sessionId]
  @serviceCode = params[:serviceCode]
  @phoneNumber = params[:phoneNumber]
  @text        = params[:text]

  puts "text - #{@text} on - #{@phoneNumber}"

  response = "END I will call and tell you about the origins of ruby."

  body response
  status 200
end