Delphi Pascal Google Developer API application

I need an application that will use google API to reply to reviews in Google Play Developer. For authentication we will use a service account and will need to use Server to Server Oauth authentification [login to view URL] The application will have 4 buttons and 2 Memos. Buttons functions: 1. Retrieving a set of reviews [login to view URL] Will put the JSON result in Memo1. 2. Retrieving an individual review [login to view URL] Will put the JSON result in Memo1. 3. Translating Review Text [login to view URL] Will put the JSON result in Memo1. 4. Reply to Review [login to view URL] Will use the review written in Memo2. I attached a sample project to see how I see the buttons and Memo placed. P.S: ONLY developers please bid max $60. To make sure you are a developer pm me how you intend to do it.