Feat : Skills

open-sse/handlers/ttsProviders/elevenlabs.js

@@ -0,0 +1,48 @@
+// ElevenLabs TTS — voice id with optional model_id prefix
+import { Buffer } from "node:buffer";
+
+const VOICES_TTL = 24 * 60 * 60 * 1000;
+const _voicesCache = new Map(); // by API key
+
+export async function fetchElevenLabsVoices(apiKey) {
+  if (!apiKey) throw new Error("ElevenLabs API key required");
+  const now = Date.now();
+  const cached = _voicesCache.get(apiKey);
+  if (cached && now - cached.time < VOICES_TTL) return cached.voices;
+
+  const res = await fetch("https://api.elevenlabs.io/v1/voices", {
+    headers: { "xi-api-key": apiKey, "Content-Type": "application/json" },
+  });
+  if (!res.ok) throw new Error(`ElevenLabs voices fetch failed: ${res.status}`);
+  const data = await res.json();
+  // Normalize: derive lang from labels for grouping
+  const voices = (data.voices || []).map((v) => ({ ...v, lang: v.labels?.language || "en" }));
+  _voicesCache.set(apiKey, { voices, time: now });
+  return voices;
+}
+
+export default {
+  async synthesize(text, model, credentials) {
+    if (!credentials?.apiKey) throw new Error("ElevenLabs API key required");
+    let modelId = "eleven_flash_v2_5";
+    let voiceId = model;
+    if (model && model.includes("/")) [modelId, voiceId] = model.split("/");
+
+    const res = await fetch(`https://api.elevenlabs.io/v1/text-to-speech/${voiceId}`, {
+      method: "POST",
+      headers: { "xi-api-key": credentials.apiKey, "Content-Type": "application/json" },
+      body: JSON.stringify({
+        text,
+        model_id: modelId,
+        voice_settings: { stability: 0.5, similarity_boost: 0.75 },
+      }),
+    });
+    if (!res.ok) {
+      const err = await res.json().catch(() => ({}));
+      throw new Error(err?.detail?.message || `ElevenLabs TTS failed: ${res.status}`);
+    }
+    const buf = await res.arrayBuffer();
+    if (buf.byteLength < 1024) throw new Error("ElevenLabs TTS returned empty audio");
+    return { base64: Buffer.from(buf).toString("base64"), format: "mp3" };
+  },
+};