// Thin client for the local faster-whisper service on CT 102 (the Ollama box).
// GPU with CPU fallback lives in the service itself; here we just POST the audio
// buffer and return the transcript. LAN-only endpoint.
const WHISPER_URL = process.env.WHISPER_URL || 'http://192.168.1.185:8001';

export async function transcribe(buffer, filename = 'clip.webm', mime = 'audio/webm') {
  const fd = new FormData();
  fd.append('file', new Blob([buffer], { type: mime }), filename);
  const res = await fetch(`${WHISPER_URL}/transcribe`, {
    method: 'POST', body: fd, signal: AbortSignal.timeout(120000)
  });
  if (!res.ok) throw new Error(`whisper ${res.status}`);
  const j = await res.json();
  return { text: (j.text || '').trim(), duration: j.duration, device: j.device };
}

export async function health() {
  try {
    const res = await fetch(`${WHISPER_URL}/health`, { signal: AbortSignal.timeout(5000) });
    return res.ok ? await res.json() : null;
  } catch { return null; }
}