From e45d79dc8130ababadfc3d72b77c40899aa8dc1d Mon Sep 17 00:00:00 2001
From: Hai Phan <hai.phan@gmail.com>
Date: Wed, 26 Jun 2024 11:18:43 +0700
Subject: [PATCH] #407 make OpenAI api endpoint url configurable

---
 custom-voices.html  |  1 +
 js/custom-voices.js | 11 ++++-------
 js/tts-engines.js   | 12 +++++++++++-
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/custom-voices.html b/custom-voices.html
index 1c7a670..8fefb5f 100644
--- a/custom-voices.html
+++ b/custom-voices.html
@@ -143,6 +143,7 @@ <h3 class="mt-3">Enable Custom Voices</h3>
           <div class="form-group">
             <div class="input-group">
               <input type="text" class="form-control" id="openai-api-key" placeholder="API Key">
+              <input type="text" class="form-control" id="openai-url" placeholder="[Optional] API URL">
               <div class="input-group-append">
                 <button type="button" class="btn btn-primary" id="openai-save-button">Save</button>
               </div>
diff --git a/js/custom-voices.js b/js/custom-voices.js
index a67db33..9dacc8d 100644
--- a/js/custom-voices.js
+++ b/js/custom-voices.js
@@ -19,6 +19,7 @@ $(function() {
       }
       if (items.openaiCreds) {
         $("#openai-api-key").val(obfuscate(items.openaiCreds.apiKey))
+        $("#openai-url").val(items.openaiCreds.url || "")
       }
       if (items.azureCreds) {
         $("#azure-region").val(items.azureCreds.region)
@@ -198,11 +199,12 @@ function testRiva(url) {
 async function openaiSave() {
   $(".status").hide()
   const apiKey = $("#openai-api-key").val().trim()
+  const url = $("#openai-url").val().trim()
   if (apiKey) {
     $("#openai-progress").show()
     try {
-      await testOpenai(apiKey)
-      await updateSettings({openaiCreds: {apiKey: apiKey}})
+      await openaiTtsEngine.test(apiKey, url)
+      await updateSettings({openaiCreds: {apiKey, url}})
       $("#openai-success").text("ChatGPT voices are enabled.").show()
       $("#openai-api-key").val(obfuscate(apiKey))
     }
@@ -219,11 +221,6 @@ async function openaiSave() {
   }
 }
 
-async function testOpenai(apiKey) {
-  const res = await fetch("https://api.openai.com/v1/models", {headers: {"Authorization": "Bearer " + apiKey}})
-  if (!res.ok) throw await res.json().then(x => x.error)
-}
-
 
 
 async function azureSave() {
diff --git a/js/tts-engines.js b/js/tts-engines.js
index cacfe4e..bdb2eec 100644
--- a/js/tts-engines.js
+++ b/js/tts-engines.js
@@ -1141,8 +1141,18 @@ function PhoneTtsEngine() {
 
 
 function OpenaiTtsEngine() {
+  const defaultApiUrl = "https://api.openai.com/v1"
   var audio, prefetchAudio
   var isSpeaking = false
+  this.test = async function(apiKey, url) {
+    const res = await fetch((url || defaultApiUrl) + "/models", {
+      headers: {"Authorization": "Bearer " + apiKey}
+    })
+    if (!res.ok) {
+      const {error} = await res.json()
+      throw error
+    }
+  }
   this.speak = function(utterance, options, onEvent) {
     const urlPromise = Promise.resolve()
       .then(() => {
@@ -1192,7 +1202,7 @@ function OpenaiTtsEngine() {
     const matches = voice.voiceName.match(/^ChatGPT .* \((\w+)\)$/)
     const voiceName = matches[1]
     const {openaiCreds} = await getSettings(["openaiCreds"])
-    const res = await fetch("https://api.openai.com/v1/audio/speech", {
+    const res = await fetch((openaiCreds.url || defaultApiUrl) + "/audio/speech", {
       method: "POST",
       headers: {
         "Content-Type": "application/json",