import {
  createMicrophoneRecorder,
  isSpeechToTextConfigured,
  transcribeAudioBySettings,
} from '../services/speech-tools-service.js';
import { state } from '../state.js';

function formatDuration(ms) {
  const totalSec = Math.max(0, Math.floor(Number(ms || 0) / 1000));
  const mm = String(Math.floor(totalSec / 60)).padStart(2, '0');
  const ss = String(totalSec % 60).padStart(2, '0');
  return `${mm}:${ss}`;
}

function showSttMissingConfigDialog(navigate) {
  const goSettings = window.confirm(
    'Распознавание речи не настроено. Перейти в настройки инструментов?'
  );
  if (goSettings) navigate('tools-settings-view');
}

export async function openSpeechInputModal({ navigate, onTextReady, onSendText, onSendQueued }) {
  if (!isSpeechToTextConfigured(state.entrySettings)) {
    showSttMissingConfigDialog(navigate);
    return;
  }

  const root = document.getElementById('modal-root');
  const host = document.createElement('div');
  host.innerHTML = `
    <div class="modal" id="speech-input-modal-layer">
      <div class="modal-card stack">
        <h3 class="modal-title">Голосовой ввод</h3>
        <p class="meta-muted" id="speech-input-status">Идёт запись...</p>
        <div class="voice-level-wrap"><div class="voice-level-fill" id="speech-level-fill"></div></div>
        <p class="meta-muted" id="speech-input-time">00:00</p>
        <p class="inline-error" id="speech-input-error"></p>
        <div class="speech-actions-top">
          <button class="secondary-btn" type="button" id="speech-cancel">Отмена</button>
          <button class="primary-btn" type="button" id="speech-ok">OK</button>
        </div>
        <button class="primary-btn speech-send-now-btn" type="button" id="speech-send-now">Распознать и сразу отправить сообщение</button>
      </div>
    </div>
  `;
  root.append(host);

  const statusEl = host.querySelector('#speech-input-status');
  const timeEl = host.querySelector('#speech-input-time');
  const levelEl = host.querySelector('#speech-level-fill');
  const errorEl = host.querySelector('#speech-input-error');
  const cancelBtn = host.querySelector('#speech-cancel');
  const sendNowBtn = host.querySelector('#speech-send-now');
  const okBtn = host.querySelector('#speech-ok');
  const recorder = createMicrophoneRecorder();
  let closed = false;
  let busy = false;

  const close = () => {
    if (closed) return;
    closed = true;
    host.remove();
  };

  const setBusy = (flag) => {
    busy = !!flag;
    cancelBtn.disabled = busy;
    sendNowBtn.disabled = busy;
    okBtn.disabled = busy;
    okBtn.textContent = busy ? 'Распознаю...' : 'OK';
    sendNowBtn.textContent = busy ? 'Распознаю...' : 'Распознать и сразу отправить сообщение';
  };

  try {
    await recorder.start(({ elapsedMs, level }) => {
      if (timeEl) timeEl.textContent = formatDuration(elapsedMs);
      if (levelEl) levelEl.style.width = `${Math.max(2, Math.round((Number(level) || 0) * 100))}%`;
    });
  } catch (error) {
    close();
    window.alert(`Не удалось получить доступ к микрофону: ${error?.message || 'unknown'}`);
    return;
  }

  cancelBtn.addEventListener('click', () => {
    recorder.cancel();
    close();
  });

  okBtn.addEventListener('click', async () => {
    if (busy) return;
    setBusy(true);
    try {
      const audioBlob = await recorder.stop();
      host.innerHTML = `
        <div class="modal" id="speech-input-modal-layer">
          <div class="modal-card stack">
            <h3 class="modal-title">Голосовой ввод</h3>
            <p class="meta-muted">Идёт распознавание текста...</p>
          </div>
        </div>
      `;
      const text = await transcribeAudioBySettings(audioBlob, state.entrySettings);
      if (typeof onTextReady === 'function') onTextReady(text);
      close();
    } catch (error) {
      setBusy(false);
      statusEl.textContent = 'Идёт запись...';
      errorEl.textContent = `Ошибка распознавания: ${error?.message || 'unknown'}`;
    }
  });

  sendNowBtn.addEventListener('click', async () => {
    if (busy) return;
    setBusy(true);
    try {
      const audioBlob = await recorder.stop();
      close();
      if (typeof onSendQueued === 'function') onSendQueued();
      const text = await transcribeAudioBySettings(audioBlob, state.entrySettings);
      if (typeof onSendText === 'function') {
        await onSendText(text);
      } else if (typeof onTextReady === 'function') {
        onTextReady(text);
      }
    } catch (error) {
      setBusy(false);
      close();
      window.alert(`Ошибка распознавания: ${error?.message || 'unknown'}`);
    }
  });
}