google custom voice (#506)

* google custom voice

* fixed

* wip

* wip

* wip

* wip

lib/middleware.js

@@ -28,7 +28,7 @@ module.exports = function(srf, logger) {
     writeAlerts,
     AlertType
   } = srf.locals;
-  const {lookupAccountDetails} = dbUtils(logger, srf);
+  const {lookupAccountDetails, lookupGoogleCustomVoice} = dbUtils(logger, srf);
 
   async function initLocals(req, res, next) {
     const callId = req.get('Call-ID');
@@ -299,6 +299,21 @@ module.exports = function(srf, logger) {
         else app2.notifier = {request: () => {}, close: () => {}};
       }
 
+      // Resolve application.speech_synthesis_voice if it's custom voice
+      if (app2.speech_synthesis_vendor === 'google' && app2.speech_synthesis_voice.startsWith('custom_')) {
+        const arr = /custom_(.*)/.exec(app2.speech_synthesis_voice);
+        if (arr) {
+          const google_custom_voice_sid = arr[1];
+          const [custom_voice] = await lookupGoogleCustomVoice(google_custom_voice_sid);
+          if (custom_voice) {
+            app2.speech_synthesis_voice = {
+              reportedUsage: custom_voice.reported_usage,
+              model: custom_voice.model
+            };
+          }
+        }
+      }
+
       req.locals.application = app2;
 
       // eslint-disable-next-line no-unused-vars

lib/utils/db-utils.js

@@ -27,6 +27,9 @@ WHERE pn.account_sid IS NULL
 AND pn.service_provider_sid = 
 (SELECT service_provider_sid from accounts where account_sid = ?) 
 AND pn.number = ?`;
+const sqlQueryGoogleCustomVoices = `SELECT *
+FROM google_custom_voices
+WHERE google_custom_voice_sid = ?`;
 
 const speechMapper = (cred) => {
   const {credential, ...obj} = cred;
@@ -161,10 +164,22 @@ module.exports = (logger, srf) => {
     }
   };
 
+  const lookupGoogleCustomVoice = async(google_custom_voice_sid) => {
+    const pp = pool.promise();
+    try {
+      const [r] = await pp.query(sqlQueryGoogleCustomVoices, [google_custom_voice_sid]);
+      return r;
+
+    } catch (err) {
+      logger.error({err}, `lookupGoogleCustomVoices: Error ${google_custom_voice_sid}`);
+    }
+  };
+
   return {
     lookupAccountDetails,
     updateSpeechCredentialLastUsed,
     lookupCarrier,
-    lookupCarrierByPhoneNumber
+    lookupCarrierByPhoneNumber,
+    lookupGoogleCustomVoice
   };
 };