Developing a Website or Software like Loto or Playwin

We are looking to develop a website and software for our client which should be similar to lotto or playwin. Where a website will be developed like [login to view URL] and clients will be purchasing a lottery ticket online or through our ERP agent. And result will be opened 4 times in a day i.e 12 PM, 2PM, 4PM and 6 PM. This result will be sent to client's mobile number through sms or through our ERP agents. All the tickets will be available for sale till 11:55 AM if result is to be announced at 12 PM. Means tickets sale will be closed automatically before 5 min of result announcement every time.