feat: Display reply time in widget (#1349)

Fixes #1132

spec/services/message_templates/hook_execution_service_spec.rb

@@ -6,8 +6,8 @@ describe ::MessageTemplates::HookExecutionService do
       contact = create(:contact, email: nil)
       conversation = create(:conversation, contact: contact)
 
-      # ensure greeting hook is enabled
-      conversation.inbox.update(greeting_enabled: true)
+      # ensure greeting hook is enabled and greeting_message is present
+      conversation.inbox.update(greeting_enabled: true, greeting_message: 'Hi, this is a greeting message')
 
       email_collect_service = double
       greeting_service = double
@@ -24,5 +24,25 @@ describe ::MessageTemplates::HookExecutionService do
       expect(::MessageTemplates::Template::EmailCollect).to have_received(:new).with(conversation: message.conversation)
       expect(email_collect_service).to have_received(:perform)
     end
+
+    it 'doesnot calls ::MessageTemplates::Template::Greeting if greeting_message is empty' do
+      contact = create(:contact, email: nil)
+      conversation = create(:conversation, contact: contact)
+      # ensure greeting hook is enabled
+      conversation.inbox.update(greeting_enabled: true)
+
+      email_collect_service = double
+
+      allow(::MessageTemplates::Template::EmailCollect).to receive(:new).and_return(email_collect_service)
+      allow(email_collect_service).to receive(:perform).and_return(true)
+      allow(::MessageTemplates::Template::Greeting).to receive(:new)
+
+      # described class gets called in message after commit
+      message = create(:message, conversation: conversation)
+
+      expect(::MessageTemplates::Template::Greeting).not_to have_received(:new)
+      expect(::MessageTemplates::Template::EmailCollect).to have_received(:new).with(conversation: message.conversation)
+      expect(email_collect_service).to have_received(:perform)
+    end
   end
 end