RegistryService.cdc

pub contract RegistryService {
    pub var totalSupply: UInt64

    // AuthNFT
    // The AuthNFT exists so an owner of a DappContract
    // can "register" with this RegistryService contract in order
    // to use contracts that exist within the Registry.
    //
    // This will only need to be acquired one time.
    // Ex. A new account comes to the Registry, gets this AuthNFT,
    // and can now interact and retrieve Tenants from whatever
    // Registry contracts they want. They will never have to get another
    // AuthNFT.
    //
    pub resource AuthNFT {
        // The unique ID of this AuthNFT
        pub let authID: UInt64

        init() {
            self.authID = RegistryService.totalSupply

            RegistryService.totalSupply = RegistryService.totalSupply + (1 as UInt64)
        }
    }

    // register
    // register gets called by someone who has never registered with 
    // RegistryService before.
    //
    // It returns a AuthNFT.
    //
    pub fun register(): @AuthNFT {        
        return <- create AuthNFT()
    }

    // Named Paths
    //
    pub let AuthStoragePath: StoragePath

    init() {
        self.totalSupply = 0

        self.AuthStoragePath = /storage/RegistryServiceAuthNFT
    }
}