Implement "press 1 to repeat" voice OTP behavior via twimlets

app/jobs/voice_otp_sender_job.rb

@@ -20,15 +20,37 @@ def send_otp(twilio_service, code, phone)
     )
   end
 
-  def twimlet_url(code)
-    "https://twimlets.com/message?#{twimlet_query_string(code)}"
+  def twimlet_url(code) # rubocop:disable Metrics/MethodLength
+    repeat = message_repeat(code)
+
+    twimlet_menu(
+      repeat,
+      1 => twimlet_menu(
+        repeat,
+        1 => twimlet_menu(
+          repeat,
+          1 => twimlet_menu(repeat, 1 => twimlet_message(message_final(code)))
+        )
+      )
+    )
+  end
+
+  def message_repeat(code)
+    I18n.t('jobs.voice_otp_sender_job.message_repeat', code: code)
+  end
+
+  def message_final(code)
+    I18n.t('jobs.voice_otp_sender_job.message_final', code: code)
   end
 
-  def twimlet_query_string(code)
-    "Message%5B0%5D=#{URI.escape(otp_message(code))}"
+  def twimlet_message(message)
+    'https://twimlets.com/message?' + { Message: { 0 => message } }.to_query
   end
 
-  def otp_message(code)
-    I18n.t('jobs.voice_otp_sender_job.message', code: code)
+  def twimlet_menu(message, options)
+    'https://twimlets.com/menu?' + {
+      Message: message,
+      Options: options.to_h
+    }.to_query
   end
 end

config/locales/jobs/en.yml

@@ -6,6 +6,9 @@ en:
 
         If you did not request this change, please contact %{app} at %{support_url}
     voice_otp_sender_job:
-      message: >
+      message_repeat: >
+        Hello! Your login.gov one time passcode is, %{code},
+        again, your passcode is, %{code}. Press 1 to repeat your code.
+      message_final: >
         Hello! Your login.gov one time passcode is, %{code},
         again, your passcode is, %{code}, goodbye!

spec/jobs/voice_otp_sender_job_spec.rb

@@ -14,15 +14,22 @@
 
       calls = FakeVoiceCall.calls
 
-      code = '1234'.scan(/\d/).join(', ')
-      message = t('jobs.voice_otp_sender_job.message', code: code)
-      url_message = URI.escape(message)
-
       expect(calls.size).to eq(1)
       call = calls.first
       expect(call.to).to eq('555-5555')
-      expect(call.url).to include(url_message)
       expect(call.from).to match(/(\+19999999999|\+12222222222)/)
+
+      code = '1234'.scan(/\d/).join(', ')
+      query = Rack::Utils.parse_nested_query(URI(call.url).query)
+      expect(query['Message']).to eq(t('jobs.voice_otp_sender_job.message_repeat', code: code))
+
+      nested_query = query
+      while nested_query['Options']
+        nested_url = URI(nested_query['Options']['1'])
+        nested_query = Rack::Utils.parse_nested_query(nested_url.query)
+      end
+      expect(nested_query['Message']['0']).
+        to eq(t('jobs.voice_otp_sender_job.message_final', code: code))
     end
 
     it 'does not send if the OTP code is expired' do