Import Feeds from URL (CSV and XML)

Looking for programmer to modify my import data feed I am just completed my website php/mysql but i need your help. - For now, my website can import XML feeds from UPLOAD only (CSV and XML). I need the following: 1.) Additional option Import Feeds from URL (CSV and XML) a.) Reimport Every (Never, Daily, Weekly, Year) b.) Delete old post if not found in the updated feed 2.) All XML Datafeed imported should show in the backend panel username - xml feed url - no. of listings update x delete x pause x edit (button) 3.) Assign Unique Reference ID / Unique ID to avoid Duplicates, thus when you upload a new datafeed it can update all existing posts and create new ones for new records. Thank you very much