Write some Software

Our Budget is 120$ Max Below is how the app should work CS CART Frontend Customer End Customer starts shopping Customer Adds item to cart Customer checks out cart Fills in details Gets to Billing Selects Mobile Payment Tab Selects Option - Mpesa/Airtel/Orange --> Display Payment Details --->Please send Amount to Account Number 12345 --------Customer Opens Phone --------Goes to Mpesa/Airtel/Orange --------Enters Account --------Enters Amount --------Enters Pin --------Hits Send Recieves SMS reciept ----EA54HY643 Confirmed. on 28/9/13 at 1:14 PM Ksh50.00 sent to 254729639024 SokoSasa. New Account balance is Ksh54.00'; Goes back to the site checkout and Enters His Name: Phone: Code Recieved: System Confirms Receipt if true then order is complete, if false error message please enter the correct code else Order is complete --> Delivery The Backend/Our End Our Account Recieves Payment Payment provider/Mpesa sends us a Message ----EA54HY643 Confirmed. on 28/9/13 at 1:14 PM Ksh50.00 received from 254729639024 MORRIS M. New Account balance is Ksh154.00'; Smssync Sends this sms to Pesapi which breaks the sms down into different values that will be found in the db table and the info is saved into pesapi table(payment) User enters code at check out Cs cart checks pesapi table for the code . If it exists cs cart alerts customer of the succesful payment and completes the order retrieving the name phone number and code and saves the payment in its own db (cscart_payment) if the code hasnt been recieved cs cart tells user about the wrong code using an error. If it is found the order is processed and complete and user is returned to the homepage. PesaPI is an unofficial open source API for mobile money systems that can be found here [login to view URL] or [login to view URL] for more information on how it operates. I have attached a php file withthe previous code now we need the same application in cs cart