Move lndhub invoice creation to service

app/controllers/lnurlpay_controller.rb

@@ -95,11 +95,13 @@ class LnurlpayController < ApplicationController
       memo = "To #{address}"
       memo = "#{memo}: \"#{comment}\"" if comment.present?
 
-      payment_request = @user.ln_create_invoice({
-        amount: amount, # sats
-        memo: memo,
-        description_hash: Digest::SHA2.hexdigest(metadata(address)),
-      })
+      payment_request = LndhubManager::CreateUserInvoice.call(
+        user: @user, payload: {
+          amount: amount, # sats
+          memo: memo,
+          description_hash: Digest::SHA2.hexdigest(metadata(address)),
+        }
+      )
 
       render json: {
         status: "OK",
@@ -133,15 +135,14 @@ class LnurlpayController < ApplicationController
         return
       end
 
-      # TODO
-      # raise zap_metadata(event).inspect
-
-      payment_request = @user.ln_create_invoice({
-        amount: amount, # sats
-        # TODO should be npub instead of address?
-        memo: "Zapped #{@user.address} on Nostr", # TODO include event ID if given
-        description_hash: Digest::SHA2.hexdigest(zap_metadata(event)),
-      })
+      payment_request = LndhubManager::CreateUserInvoice.call(
+        user: @user, payload: {
+          amount: amount, # sats
+          # TODO should be npub instead of address?
+          memo: "Zapped #{@user.address} on Nostr", # TODO include event ID if given
+          description_hash: Digest::SHA2.hexdigest(zap_metadata(event)),
+        }
+      )
 
       render json: { status: "OK", pr: payment_request }
     end

app/models/user.rb

@@ -143,12 +143,6 @@ class User < ApplicationRecord
     enable_service Setting.default_services
   end
 
-  def ln_create_invoice(payload)
-    lndhub = Lndhub.new
-    lndhub.authenticate self
-    lndhub.addinvoice payload
-  end
-
   def dn
     return @dn if defined?(@dn)
     @dn = Devise::LDAP::Adapter.get_dn(self.cn)

app/services/lndhub_manager/create_user_invoice.rb

@@ -0,0 +1,13 @@
+module LndhubManager
+  class CreateUserInvoice < Lndhub
+    def initialize(user:, payload:)
+      @user = user
+      @payload = payload
+    end
+
+    def call
+      authenticate @user
+      addinvoice @payload
+    end
+  end
+end