// ---------- Groq API: транскрипция (HTTP-чанки <10KB — обход DPI) ----------

async function transcribe(blob) {
  if (!GROQ_API_KEY) return { text: '', error: 'no_key' };
  const tStart = performance.now();

  const base64 = await new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = () => resolve(reader.result.split(',')[1]);
    reader.onerror = reject;
    reader.readAsDataURL(blob);
  });

  const CHUNK = 3000; // ~4KB base64 на чанк (POST <10KB — DPI не режет)
  const total = Math.ceil(base64.length / CHUNK);
  const mime = blob.type || 'audio/webm';
  console.log('[CHUNK] blob=' + (blob.size/1024).toFixed(1) + 'KB b64=' + base64.length + ' chunks=' + total);

  let sid = '';
  try {
    for (let i = 0; i < base64.length; i += CHUNK) {
      const idx = Math.floor(i / CHUNK);
      const body = JSON.stringify({
        idx, total,
        chunk: base64.slice(i, i + CHUNK),
        mime, token: GROQ_API_KEY,
        sid
      });
      const r = await fetch('https://lang.kube5s.ru/openai/v1/transcribe', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body
      });
      const data = await r.json();
      if (idx === total - 1) {
        console.log('[CHUNK] ← ' + ((performance.now()-tStart)/1000).toFixed(2) + 's → ' + (data.text||'(empty)'));
        return data.error ? { text: '', error: data.error } : { text: data.text || '', error: null };
      }
      sid = data.sid || '';
    }
  } catch(e) {
    console.log('[CHUNK] ERR', e);
    return { text: '', error: 'network' };
  }
}

async function translateToRussian(text) {
  if (!GROQ_API_KEY) return;
  try {
    const res = await fetch('https://lang.kube5s.ru/openai/v1/chat/completions', {
      method: 'POST',
      headers: { 'Authorization': `Bearer ${GROQ_API_KEY}`, 'Content-Type': 'application/json' },
      body: JSON.stringify({
        model: 'llama-3.3-70b-versatile',
        messages: [{ role: 'user', content: 'Переведи на русский одним словом или фразой: ' + text }],
        max_tokens: 50,
        temperature: 0
      })
    });
    const data = await res.json();
    if (data.choices?.[0]?.message?.content) {
      document.getElementById('translation').textContent = '🇷🇺 ' + data.choices[0].message.content;
    }
  } catch(e) { /* тихо */ }
}