Autorelease WHMCS Module

We would like a module create for whmcs that will select and supply server details to a customer when they purchase a product. The current whmcs module would work as a good template. We need to be able to enter a list of available servers with details (username, password and main IP) then the module should be able to select an available server that has not already been assigned to a customer, once it assigns the server and changes the required details in the customers profile it should then send the client the welcome email. The module should not assign servers that have already been assigned to customers, if their is no servers available it should make the admin users aware that manual setup is required. If you require further information please let me know.