WHMCS Porta One addon

I need a whmcs addon that will provision/integrate portaone switch&billing, the idea is to control everything on whmcs without having to login to portaone. required features: 1. Client management (creation and details updating) 2. Sip account management (creation,termination, see and update call forwarding options,and statement creation) 3. SIP balance control (client to view current balance & to top up and use whmcs existing payment options to pay) 4. Password management ( view existing sip password and update sip account password) 5. Sip server management ( select server to allocate each new account to dynamically based on the number availability, since i have 2 service providers i work with) Day to day work flow: Clients add product on whmcs >> select desired DID number (either by area code or available DID numbers on inventory) >> Client pay using whmcs available payment method>> Once payment is received client receive an email with notifying them the number is active, tey must configure it>> client logins>> enter a phone number to forward their call to (when no sip client is registered)>>client enter email address to send voicemail messages to>>client set a password for their sip account, with their assigned DID number as a username>> client saves settings then they receive an email with links to the soft phone and setup instruction containing address,username&password) when a client runs out of airtime they can: login to view their balance>> select top up amount>> pay using whmcs available payment options>> the balance get allocated and they can make calls. Client can also add as many sip accounts into their profile as they want, from their dashboard or via the normal checkout process Admin to: [login to view URL] able to generate account statements monthly (a record of all calls made and received, balance top up and subscription charges) 2. Send this statements automatically monthly and be able to send them manually 3. Manually suspend and unsuspend sip accounts. 4. set number of days after inactivity a sip account needs to be suspended. 5. Be able to see sip server's available airtime balance(so they can top up balance) 6. Be able to add or update soft switch details (we have more than one servers we use.