support elevenlabs different endpoint (#502)

* support elevenlabs different endpoint

* wip

* wip

* wip

lib/routes/api/speech-credentials.js

@@ -162,6 +162,7 @@ const encryptCredential = (obj) => {
     voice_engine,
     engine_version,
     service_version,
+    api_uri,
     options
   } = obj;
 
@@ -265,7 +266,11 @@ const encryptCredential = (obj) => {
     case 'elevenlabs':
       assert(api_key, 'invalid elevenLabs speech credential: api_key is required');
       assert(model_id, 'invalid elevenLabs speech credential: model_id is required');
-      const elevenlabsData = JSON.stringify({api_key, model_id, options});
+      const elevenlabsData = JSON.stringify({
+        api_key,
+        model_id,
+        ...(api_uri && {api_uri}),
+        options});
       return encrypt(elevenlabsData);
 
     case 'speechmatics':
@@ -537,7 +542,8 @@ router.put('/:sid', async(req, res) => {
           service_version,
           speechmatics_stt_uri,
           resemble_tts_use_tls,
-          resemble_tts_uri
+          resemble_tts_uri,
+          api_uri
         } = req.body;
 
         const newCred = {
@@ -572,7 +578,8 @@ router.put('/:sid', async(req, res) => {
           service_version,
           speechmatics_stt_uri,
           resemble_tts_uri,
-          resemble_tts_use_tls
+          resemble_tts_use_tls,
+          api_uri
         };
         logger.info({o, newCred}, 'updating speech credential with this new credential');
         obj.credential = encryptCredential(newCred);
@@ -865,10 +872,10 @@ router.get('/:sid/test', async(req, res) => {
         }
       }
     } else if (cred.vendor === 'elevenlabs') {
-      const {api_key, model_id} = credential;
+      const {api_key, model_id, api_uri} = credential;
       if (cred.use_for_tts) {
         try {
-          await testElevenlabs(logger, {api_key, model_id});
+          await testElevenlabs(logger, {api_key, model_id, api_uri});
           results.tts.status = 'ok';
           SpeechCredential.ttsTestResult(sid, true);
         } catch (err) {

lib/utils/speech-utils.js

@@ -316,8 +316,8 @@ const testWellSaidTts = async(logger, credentials) => {
 };
 
 const testElevenlabs = async(logger, credentials) => {
-  const {api_key, model_id} = credentials;
-  const response = await fetch('https://api.elevenlabs.io/v1/text-to-speech/21m00Tcm4TlvDq8ikWAM', {
+  const {api_key, model_id, api_uri} = credentials;
+  const response = await fetch(`https://${api_uri || 'api.elevenlabs.io'}/v1/text-to-speech/21m00Tcm4TlvDq8ikWAM`, {
     method: 'POST',
     headers: {
       'xi-api-key': api_key,
@@ -714,6 +714,7 @@ function decryptCredential(obj, credential, logger, isObscureKey = true) {
     const o = JSON.parse(decrypt(credential));
     obj.api_key = isObscureKey ? obscureKey(o.api_key) : o.api_key;
     obj.model_id = o.model_id;
+    obj.api_uri = o.api_uri;
     obj.options = o.options;
   } else if ('playht' === obj.vendor) {
     const o = JSON.parse(decrypt(credential));
@@ -1014,10 +1015,12 @@ async function getLanguagesVoicesForElevenlabs(credential) {
       'xi-api-key': credential.api_key
     };
 
-    const getModelPromise = fetch('https://api.elevenlabs.io/v1/models', {
+    const api_uri = credential.api_uri || 'api.elevenlabs.io';
+
+    const getModelPromise = fetch(`https://${api_uri}/v1/models`, {
       headers
     });
-    const getVoicePromise = fetch('https://api.elevenlabs.io/v1/voices', {
+    const getVoicePromise = fetch(`https://${api_uri}/v1/voices`, {
       headers
     });
     const [langResp, voiceResp] = await Promise.all([getModelPromise, getVoicePromise]);