POST /api/v1/audio/quote      → price in USD
POST /api/v1/audio/queue      → { queue_id }      (funds reserved)
POST /api/v1/audio/retrieve   → status or binary audio
POST /api/v1/audio/complete   → finalize & delete media

curl https://api.venice.ai/api/v1/audio/quote \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "elevenlabs-music",
    "duration_seconds": 60
  }'

curl https://api.venice.ai/api/v1/audio/queue \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "elevenlabs-music",
    "prompt": "Uplifting indie-folk acoustic track, 120 BPM, major key.",
    "lyrics_prompt": "Verse 1: Walking through the city lights...\nChorus: We are the dreamers...",
    "duration_seconds": 60,
    "voice": "Aria",
    "language_code": "en",
    "speed": 1.0,
    "force_instrumental": false,
    "lyrics_optimizer": false
  }'

curl https://api.venice.ai/api/v1/audio/retrieve \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"elevenlabs-music","queue_id":"..."}' \
  --output track.mp3

curl https://api.venice.ai/api/v1/audio/complete \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"elevenlabs-music","queue_id":"..."}'

const base = 'https://api.venice.ai/api/v1'
const headers = {
  Authorization: `Bearer ${process.env.VENICE_API_KEY}`,
  'Content-Type': 'application/json',
}

async function generateTrack() {
  // 1. Quote
  const quote = await fetch(`${base}/audio/quote`, {
    method: 'POST', headers,
    body: JSON.stringify({ model: 'elevenlabs-music', duration_seconds: 60 }),
  }).then(r => r.json())
  console.log('price:', quote.quote)

  // 2. Queue
  const { queue_id, model } = await fetch(`${base}/audio/queue`, {
    method: 'POST', headers,
    body: JSON.stringify({
      model: 'elevenlabs-music',
      prompt: 'Uplifting indie-folk acoustic track, 120 BPM.',
      duration_seconds: 60,
      force_instrumental: true,
    }),
  }).then(r => r.json())

  // 3. Poll
  while (true) {
    const res = await fetch(`${base}/audio/retrieve`, {
      method: 'POST', headers,
      body: JSON.stringify({ model, queue_id }),
    })
    const ct = res.headers.get('content-type') ?? ''
    if (ct.startsWith('audio/')) {
      const buf = Buffer.from(await res.arrayBuffer())
      await fs.writeFile('track.mp3', buf)
      break
    }
    const { status } = await res.json()
    if (status !== 'PROCESSING') throw new Error(`unexpected ${status}`)
    await new Promise(r => setTimeout(r, 3000))
  }

  // 4. Complete
  await fetch(`${base}/audio/complete`, {
    method: 'POST', headers,
    body: JSON.stringify({ model, queue_id }),
  })
}