e6091c299f
- TTS: switch from OpenAI SDK to axios (same fix as STT), drop voice param since it's configured inside LiteLLM per model - Fix 'ElevenLabs unavailable' toast shown even when provider is LiteLLM - Add dedicated red Stop button to encounter recording UI
68 lines
2.7 KiB
JavaScript
68 lines
2.7 KiB
JavaScript
const express = require('express');
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const router = express.Router();
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const axios = require('axios');
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const { authMiddleware } = require('../middleware/auth');
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// TTS_PROVIDER=litellm → LiteLLM proxy (Vertex AI TTS, OpenAI TTS, etc.)
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// TTS_PROVIDER=elevenlabs → ElevenLabs (not HIPAA)
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// (auto) LITELLM_API_BASE set → litellm
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// (auto) ELEVENLABS_API_KEY set → elevenlabs
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function getTTSProvider() {
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var env = process.env.TTS_PROVIDER;
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if (env === 'litellm') return 'litellm';
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if (env === 'elevenlabs') return 'elevenlabs';
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if (process.env.LITELLM_API_BASE) return 'litellm';
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if (process.env.ELEVENLABS_API_KEY) return 'elevenlabs';
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return 'none';
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}
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var ttsProvider = getTTSProvider();
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console.log('🔊 TTS provider:', ttsProvider);
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router.post('/text-to-speech', authMiddleware, async (req, res) => {
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try {
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var text = (req.body.text || '').substring(0, 5000);
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if (!text) return res.status(400).json({ error: 'No text provided' });
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if (ttsProvider === 'litellm') {
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if (!process.env.LITELLM_API_BASE) return res.status(400).json({ error: 'LITELLM_API_BASE not set.' });
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var ttsModel = process.env.LITELLM_TTS_MODEL || 'tts-1';
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var base = process.env.LITELLM_API_BASE.replace(/\/+$/, '');
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var ttsHeaders = { 'Content-Type': 'application/json' };
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if (process.env.LITELLM_API_KEY) ttsHeaders['Authorization'] = 'Bearer ' + process.env.LITELLM_API_KEY;
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// Send only model + input — voice is configured inside LiteLLM per model
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var ttsResp = await axios.post(base + '/v1/audio/speech', {
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model: ttsModel,
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input: text
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}, {
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headers: ttsHeaders,
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responseType: 'arraybuffer',
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timeout: 60000
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});
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res.set('Content-Type', 'audio/mpeg');
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return res.send(Buffer.from(ttsResp.data));
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}
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if (ttsProvider === 'elevenlabs') {
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if (!process.env.ELEVENLABS_API_KEY) return res.status(400).json({ error: 'ElevenLabs not configured' });
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const response = await axios({
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method: 'POST',
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url: 'https://api.elevenlabs.io/v1/text-to-speech/pNInz6obpgDQGcFmaJgB',
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headers: { 'xi-api-key': process.env.ELEVENLABS_API_KEY, 'Content-Type': 'application/json' },
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data: { text: text, model_id: 'eleven_turbo_v2_5', voice_settings: { stability: 0.5, similarity_boost: 0.75 } },
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responseType: 'arraybuffer'
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});
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res.set('Content-Type', 'audio/mpeg');
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return res.send(Buffer.from(response.data));
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}
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res.status(400).json({ error: 'TTS not configured. Set LITELLM_API_BASE or ELEVENLABS_API_KEY.' });
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} catch (err) {
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console.error('[TTS] Error:', err.message);
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res.status(500).json({ error: 'TTS failed: ' + err.message });
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}
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});
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module.exports = router;
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