Create PayPal Purchase script and DB/key value store

I need an interface with PayPal Pro that allows my website users to purchase products and keeps a record of both users and transactions. ## Deliverables I need a script that does a search at login to see if client is pre-authorized. If not, they are assigned temporary authorization. If so, script will pre-fill several fields, ensure that all client/screen-entered information is complete, pass all required information to PayPal's Payment Pro, and allow a customer to purchase a product through PayPal without leaving my site. If the purchase is successful, the script should then save the user data, purchase information and other customized data in a database (or key value store). Before the customer information is saved, the script should do one or more searches and update referral information in other users' data to allow for bonus programs and/or multi-level marketing style commissions. The script should also send an email to the user with purchase information and login data. I will also need several reports or queries: 1. A report that will search the DB (or key value store) and tally how many participants in each program were active during a flexible period of time (from date to date). 2. A report that will tally the total commissions or bonuses due per client, create a list for payroll of all clients and amounts due, send an email to each client reflecting the amount they are due, and mark the client tallied info as complete in DB (or key value store). 3. A query that updates each client as "paid" in the DB (or key value store) after payroll has sent checks.