Protocol for converting your registration struct to an Ltix.Registration.

Implement it for your registration struct, and your storage adapter can return that struct. Ltix passes your struct to the other Ltix.StorageAdapter callbacks, and the Ltix.LaunchContext and Ltix.OAuth.Client have it.

defmodule MyApp.PlatformRegistration do
  defstruct [:id, :tenant_id, :issuer, :client_id,
             :auth_endpoint, :jwks_uri, :token_endpoint]

  defimpl Ltix.Registerable do
    def to_registration(reg) do
      Ltix.Registration.new(%{
        issuer: reg.issuer,
        client_id: reg.client_id,
        auth_endpoint: reg.auth_endpoint,
        jwks_uri: reg.jwks_uri,
        token_endpoint: reg.token_endpoint
      })
    end
  end
end

Ltix.Registration implements this protocol, so your storage adapter can also return a %Registration{}. Login and launch return the same error as Ltix.Registration.new/1 for an invalid one.