Download Site with CPA locker to download files

Hello I need a script that would allow users to sign up and upload files. Then they can distribute the files (url) When people want to download the files, they have to complete a survey (from cpa) The user who uploaded the files will get % of what the cpa pays and me the rest The script must be have an admin panel, see stats, postback from cpa result to script, display commissions, etc.. Thanks