Push/Pull module for WHMCS

Develop a WHMCS module that allows users to push and pull active domains between users. - Module verify existence of the other user account pull / push (input based upon client id or e-mail which should configurable by admin user); - Push / pull only possible when a domain is active; - Push / pull only be possible if there are no open invoices for it (open invoice error notification should not be visible to pull requester); - Push / pull only be possible if automatic renewal is enabled; - When push is requested it sends out an e-mail to confirm; > After confirmation it sends out e-mail to receiver to accept; - When pull is requested, it sends out an e-mail to current holder to accept; - E-mail notification when push / pull is accepted by the other party and the domain is transferred; - Push / pull status should be visible in the domain details page overview; - Push button which leads to push / pull module page should be visable in action menu from the domain details page. - Pull domain link should be visable in actions menu from domains list page; - Grace (push / pull expiry) period should be configurable by admin; - E-mail reminders should be send out to both parties relates to open pending push / pull requests and informing push / pull expiry; - Push / pull log of domains and status should be visable in admin side; - Log should contain IP info of requester / accepter; - e-mails to admin roles based upon status change.