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fix(tts): evaluate OPENAI_TTS_BASE_URL at runtime (#2816)

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This commit is contained in:
Aaryan 2026-01-27 11:06:25 -05:00
parent b559a5ab87
commit 5756387848
1 changed files with 21 additions and 10 deletions
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31
src/tts/tts.ts
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@ -758,10 +758,21 @@ export const OPENAI_TTS_MODELS = ["gpt-4o-mini-tts", "tts-1", "tts-1-hd"] as con
* When set, model/voice validation is relaxed to allow non-OpenAI models.
* Example: OPENAI_TTS_BASE_URL=http://localhost:8880/v1
*/
const OPENAI_TTS_BASE_URL = (
process.env.OPENAI_TTS_BASE_URL?.trim() || "https://api.openai.com/v1"
).replace(/\/+$/, "");
const isCustomOpenAIEndpoint = OPENAI_TTS_BASE_URL !== "https://api.openai.com/v1";
const DEFAULT_OPENAI_TTS_BASE_URL = "https://api.openai.com/v1";
/**
* Custom OpenAI-compatible TTS endpoint.
* When set, model/voice validation is relaxed to allow non-OpenAI models.
* Example: OPENAI_TTS_BASE_URL=http://localhost:8880/v1
*/
function getOpenAITtsBaseUrl(): string {
return (
process.env.OPENAI_TTS_BASE_URL?.trim() || DEFAULT_OPENAI_TTS_BASE_URL
).replace(/\/+$/, "");
}
function isCustomOpenAIEndpoint(): boolean {
return getOpenAITtsBaseUrl() !== DEFAULT_OPENAI_TTS_BASE_URL;
}
export const OPENAI_TTS_VOICES = [
"alloy",
"ash",
@ -778,13 +789,13 @@ type OpenAiTtsVoice = (typeof OPENAI_TTS_VOICES)[number];
function isValidOpenAIModel(model: string): boolean {
// Allow any model when using custom endpoint (e.g., Kokoro, LocalAI)
if (isCustomOpenAIEndpoint) return true;
if (isCustomOpenAIEndpoint()) return true;
return OPENAI_TTS_MODELS.includes(model as (typeof OPENAI_TTS_MODELS)[number]);
}
function isValidOpenAIVoice(voice: string): voice is OpenAiTtsVoice {
// Allow any voice when using custom endpoint (e.g., Kokoro Chinese voices)
if (isCustomOpenAIEndpoint) return true;
if (isCustomOpenAIEndpoint()) return true;
return OPENAI_TTS_VOICES.includes(voice as OpenAiTtsVoice);
}
@ -1011,7 +1022,7 @@ async function openaiTTS(params: {
const timeout = setTimeout(() => controller.abort(), timeoutMs);
try {
const response = await fetch(`${OPENAI_TTS_BASE_URL}/audio/speech`, {
const response = await fetch(`${getOpenAITtsBaseUrl()}/audio/speech`, {
method: "POST",
headers: {
Authorization: `Bearer ${apiKey}`,
@ -1365,9 +1376,9 @@ export async function maybeApplyTtsToPayload(params: {
visibleText === text.trim()
? params.payload
: {
...params.payload,
text: visibleText.length > 0 ? visibleText : undefined,
};
...params.payload,
text: visibleText.length > 0 ? visibleText : undefined,
};
if (autoMode === "tagged" && !directives.hasDirective) return nextPayload;
if (autoMode === "inbound" && params.inboundAudio !== true) return nextPayload;