(() => {
  const form = document.querySelector('[data-ticket-wizard]');
  if (!form) return;

  const steps = [...form.querySelectorAll('[data-wizard-step]')];
  const progress = [...document.querySelectorAll('[data-wizard-progress-item]')];
  const unit = form.querySelector('[data-ticket-unit]');
  const category = form.querySelector('[data-ticket-category]');
  const subject = form.querySelector('[data-ticket-subject]');
  const province = form.querySelector('[data-province-input]');
  const city = form.querySelector('[data-city-input]');
  const body = form.querySelector('textarea[name="body"]');
  const canonicalFiles = form.querySelector('input[name="files"]');
  const voiceRoot = form.querySelector('[data-ticket-voice-recorder]');
  let currentStep = 1;

  const toPersianDigits = value => String(value).replace(/\d/g, digit => '۰۱۲۳۴۵۶۷۸۹'[digit]);

  function updateProgress(number) {
    progress.forEach(item => {
      const itemNumber = Number(item.dataset.wizardProgressItem);
      item.classList.toggle('is-active', itemNumber === number);
      item.classList.toggle('is-complete', itemNumber < number);
      item.querySelector('span').textContent = itemNumber < number ? '✓' : toPersianDigits(itemNumber);
    });
  }

  function showStep(number, { scroll = true } = {}) {
    currentStep = number;
    steps.forEach(step => {
      const active = Number(step.dataset.wizardStep) === number;
      step.hidden = !active;
      step.classList.toggle('is-active', active);
    });
    updateProgress(number);
    if (scroll) window.scrollTo({ top: 0, behavior: 'smooth' });
  }

  function clearValidation(number) {
    const step = form.querySelector(`[data-wizard-step="${number}"]`);
    const error = form.querySelector(`[data-wizard-error="${number}"]`);
    step?.querySelectorAll('[aria-invalid="true"]').forEach(field => field.removeAttribute('aria-invalid'));
    if (error) {
      error.textContent = '';
      error.classList.remove('is-visible');
      error.removeAttribute('tabindex');
    }
  }

  function showValidation(number, problem) {
    const step = form.querySelector(`[data-wizard-step="${number}"]`);
    const error = form.querySelector(`[data-wizard-error="${number}"]`);
    if (number === 1 && problem.fields.some(field => field === unit || field === category)) {
      const manualRouting = form.querySelector('.ticket-manual-routing');
      if (manualRouting) manualRouting.open = true;
    }
    step?.querySelectorAll('[aria-invalid="true"]').forEach(field => field.removeAttribute('aria-invalid'));
    problem.fields.forEach(field => field?.setAttribute('aria-invalid', 'true'));
    error.textContent = problem.message;
    error.tabIndex = -1;
    error.classList.add('is-visible');
    requestAnimationFrame(() => {
      error.focus({ preventScroll: true });
      error.scrollIntoView({ behavior: 'smooth', block: 'center', inline: 'nearest' });
    });
  }

  function problemForStep(number) {
    if (number === 1) {
      const missing = [];
      const fields = [];
      if (!unit?.value) { missing.push('واحد سازمانی'); fields.push(unit); }
      if (!category?.value) { missing.push('دسته‌بندی'); fields.push(category); }
      if ((subject?.value.trim().length || 0) < 5) { missing.push('موضوع دقیق حداقل پنج‌حرفی'); fields.push(subject); }
      if (missing.length) return { message: `برای ادامه، ${missing.join('، ')} را تکمیل کنید.`, fields };
    }
    if (number === 2) {
      if (city?.value && !province?.value) return { message: 'برای شهر انتخاب‌شده، استان را نیز مشخص کنید.', fields: [province, city] };
    }
    if (number === 4 && !body?.value.trim() && !(canonicalFiles?.files.length)) {
      return { message: 'برای ادامه، شرح درخواست بنویسید یا یک فایل/پیام صوتی اضافه کنید.', fields: [body] };
    }
    return null;
  }

  function validateStep(number) {
    const problem = problemForStep(number);
    if (problem) {
      showValidation(number, problem);
      return false;
    }
    clearValidation(number);
    return true;
  }

  function selectedText(select, fallback) {
    return select?.selectedOptions?.[0]?.textContent?.trim() || fallback;
  }

  function buildReview() {
    form.querySelector('[data-review-subject]').textContent = subject.value.trim();
    form.querySelector('[data-review-unit]').textContent = selectedText(unit, '—');
    form.querySelector('[data-review-category]').textContent = selectedText(category, '—');
    form.querySelector('[data-review-location]').textContent = province?.value
      ? [province.value, city?.value].filter(Boolean).join('، ')
      : 'ثبت نشده';
    const selectedExpert = form.querySelector('input[name="selected_expert"]:checked');
    form.querySelector('[data-review-expert]').textContent = selectedExpert?.closest('label')?.querySelector('strong')?.textContent?.trim() || 'صف عمومی واحد';
    form.querySelector('[data-review-body]').textContent = body.value.trim() || 'شرح متنی ثبت نشده است.';
    const fileList = form.querySelector('[data-review-files]');
    fileList.replaceChildren();
    const visibleFiles = [...(canonicalFiles?.files || [])].filter(file => !file.type.startsWith('audio/'));
    visibleFiles.forEach(file => {
      const chip = document.createElement('span');
      chip.textContent = file.name;
      fileList.append(chip);
    });
    const reviewAudio = form.querySelector('[data-review-audio]');
    const voiceApi = voiceRoot?.ticketVoiceRecorder;
    reviewAudio.hidden = !voiceApi?.hasVoice();
    if (voiceApi?.url()) reviewAudio.src = voiceApi.url();
    if (!visibleFiles.length && !voiceApi?.hasVoice()) {
      const chip = document.createElement('span');
      chip.textContent = 'بدون پیوست';
      fileList.append(chip);
    }
  }

  async function leaveCurrentStep(targetStep) {
    const button = form.querySelector(`[data-wizard-step="${currentStep}"] [data-wizard-next]`);
    if (button) button.disabled = true;
    if (currentStep === 4) await voiceRoot?.ticketVoiceRecorder?.stopAndSave({ automatic: true });
    if (button) button.disabled = false;
    if (!validateStep(currentStep)) return;
    if (currentStep === 4) buildReview();
    showStep(targetStep);
  }

  form.querySelectorAll('[data-wizard-next]').forEach(button => button.addEventListener('click', () => leaveCurrentStep(Math.min(5, currentStep + 1))));
  form.querySelectorAll('[data-wizard-prev]').forEach(button => button.addEventListener('click', async () => {
    if (currentStep === 4) await voiceRoot?.ticketVoiceRecorder?.stopAndSave({ automatic: true });
    showStep(Math.max(1, currentStep - 1));
  }));
  form.querySelectorAll('[data-wizard-edit]').forEach(button => button.addEventListener('click', () => showStep(Number(button.dataset.wizardEdit))));

  form.addEventListener('input', event => {
    event.target.removeAttribute?.('aria-invalid');
    if (event.target === body) form.querySelector('[data-body-count]').textContent = toPersianDigits(body.value.length);
  });
  form.addEventListener('change', event => event.target.removeAttribute?.('aria-invalid'));

  form.addEventListener('submit', event => {
    const invalidStep = [1, 2, 3, 4].find(number => problemForStep(number));
    if (!invalidStep) return;
    event.preventDefault();
    form.querySelectorAll('button[type="submit"]').forEach(button => { button.disabled = false; });
    showStep(invalidStep);
    requestAnimationFrame(() => validateStep(invalidStep));
  });

  function setupVoiceRecorder(root) {
    if (!root) return;
    const ui = {
      idle: root.querySelector('[data-voice-idle]'), live: root.querySelector('[data-voice-live]'),
      preview: root.querySelector('[data-voice-preview]'), record: root.querySelector('[data-voice-record]'),
      pause: root.querySelector('[data-voice-pause]'), stop: root.querySelector('[data-voice-stop]'),
      cancel: root.querySelector('[data-voice-cancel]'), rerecord: root.querySelector('[data-voice-rerecord]'),
      remove: root.querySelector('[data-voice-delete]'), audio: root.querySelector('[data-voice-audio]'),
      timer: root.querySelector('[data-voice-timer]'), status: root.querySelector('[data-voice-status]'),
      meta: root.querySelector('[data-voice-meta]'), error: root.querySelector('[data-voice-error]'),
    };
    let recorder = null;
    let stream = null;
    let chunks = [];
    let voiceFile = null;
    let voiceUrl = '';
    let startedAt = 0;
    let pausedAt = 0;
    let pausedMs = 0;
    let timer = null;
    let stopResolver = null;
    let discardOnStop = false;
    let automaticStop = false;

    const elapsed = () => Math.max(0, Date.now() - startedAt - pausedMs - (recorder?.state === 'paused' ? Date.now() - pausedAt : 0));
    const formatDuration = milliseconds => {
      const seconds = Math.floor(milliseconds / 1000);
      return toPersianDigits(`${String(Math.floor(seconds / 60)).padStart(2, '0')}:${String(seconds % 60).padStart(2, '0')}`);
    };
    const stopTracks = () => { stream?.getTracks().forEach(track => track.stop()); stream = null; };
    const clearTimer = () => { clearInterval(timer); timer = null; };
    const showState = (state, status) => {
      ui.idle.hidden = state !== 'idle';
      ui.live.hidden = state !== 'live' && state !== 'paused';
      ui.preview.hidden = state !== 'preview';
      root.dataset.state = state;
      if (status) ui.status.textContent = status;
    };
    const removeVoice = ({ notify = true } = {}) => {
      if (notify && voiceFile) form.dispatchEvent(new CustomEvent('voice-removed', { detail: voiceFile }));
      voiceFile = null;
      if (voiceUrl) URL.revokeObjectURL(voiceUrl);
      voiceUrl = '';
      ui.audio.removeAttribute('src');
      ui.timer.textContent = '۰۰:۰۰';
      ui.pause.textContent = 'مکث';
      ui.error.hidden = true;
      showState('idle', 'برای توضیح سریع‌تر، صدای خود را ضبط کنید.');
    };
    const complete = (blob, duration) => {
      if (!blob.size) {
        removeVoice();
        ui.error.textContent = 'صدایی ثبت نشد؛ لطفاً دوباره تلاش کنید.';
        ui.error.hidden = false;
        return;
      }
      if (voiceUrl) URL.revokeObjectURL(voiceUrl);
      voiceUrl = URL.createObjectURL(blob);
      ui.audio.src = voiceUrl;
      const type = blob.type || 'audio/webm';
      const extension = type.includes('ogg') ? 'ogg' : type.includes('mp4') ? 'm4a' : type.includes('wav') ? 'wav' : 'webm';
      voiceFile = new File([blob], `voice-${Date.now()}.${extension}`, { type });
      form.dispatchEvent(new CustomEvent('voice-added', { detail: voiceFile }));
      ui.timer.textContent = formatDuration(duration);
      ui.meta.textContent = `${formatDuration(duration)} · آماده پخش و ارسال`;
      showState('preview', automaticStop ? 'ضبط هنگام ادامه‌دادن متوقف و ذخیره شد.' : 'ضبط ذخیره شد؛ پیش از ارسال آن را بررسی کنید.');
    };
    const start = async () => {
      ui.error.hidden = true;
      if (!window.isSecureContext || !navigator.mediaDevices?.getUserMedia || !window.MediaRecorder) {
        ui.error.textContent = 'مرورگر یا اتصال فعلی امکان ضبط امن صدا را ندارد.';
        ui.error.hidden = false;
        return;
      }
      try {
        if (voiceFile) removeVoice();
        stream = await navigator.mediaDevices.getUserMedia({ audio: { echoCancellation: true, noiseSuppression: true, autoGainControl: true } });
        const mimeType = ['audio/webm;codecs=opus', 'audio/mp4', 'audio/ogg;codecs=opus', 'audio/webm', 'audio/wav'].find(type => MediaRecorder.isTypeSupported?.(type));
        recorder = new MediaRecorder(stream, mimeType ? { mimeType } : undefined);
        chunks = [];
        pausedMs = 0;
        discardOnStop = false;
        automaticStop = false;
        recorder.ondataavailable = event => { if (event.data.size) chunks.push(event.data); };
        recorder.onerror = () => {
          stopTracks();
          clearTimer();
          ui.error.textContent = 'ضبط صدا متوقف شد. دوباره تلاش کنید.';
          ui.error.hidden = false;
          showState('idle');
        };
        recorder.onstop = () => {
          const duration = elapsed();
          clearTimer();
          stopTracks();
          if (discardOnStop) removeVoice();
          else complete(new Blob(chunks, { type: recorder.mimeType?.split(';')[0] || 'audio/webm' }), duration);
          recorder = null;
          stopResolver?.();
          stopResolver = null;
        };
        recorder.start(500);
        startedAt = Date.now();
        ui.timer.textContent = '۰۰:۰۰';
        showState('live', 'در حال ضبط؛ واضح و نزدیک به میکروفن صحبت کنید.');
        timer = setInterval(() => { ui.timer.textContent = formatDuration(elapsed()); }, 250);
      } catch (error) {
        stopTracks();
        ui.error.textContent = error.name === 'NotAllowedError'
          ? 'دسترسی میکروفن رد شد؛ آن را از تنظیمات مرورگر فعال کنید.'
          : 'میکروفن در دسترس نیست یا برنامه دیگری از آن استفاده می‌کند.';
        ui.error.hidden = false;
      }
    };
    const stopAndSave = ({ discard = false, automatic = false } = {}) => {
      if (!recorder || recorder.state === 'inactive') return Promise.resolve();
      discardOnStop = discard;
      automaticStop = automatic;
      if (recorder.state === 'paused') {
        pausedMs += Date.now() - pausedAt;
        recorder.resume();
      }
      return new Promise(resolve => { stopResolver = resolve; recorder.stop(); });
    };
    const togglePause = () => {
      if (recorder?.state === 'recording') {
        recorder.pause();
        pausedAt = Date.now();
        ui.pause.textContent = 'ادامه ضبط';
        showState('paused', 'ضبط موقتاً متوقف شده است.');
      } else if (recorder?.state === 'paused') {
        pausedMs += Date.now() - pausedAt;
        recorder.resume();
        ui.pause.textContent = 'مکث';
        showState('live', 'در حال ضبط؛ واضح و نزدیک به میکروفن صحبت کنید.');
      }
    };

    ui.record.addEventListener('click', start);
    ui.pause.addEventListener('click', togglePause);
    ui.stop.addEventListener('click', () => stopAndSave());
    ui.cancel.addEventListener('click', () => stopAndSave({ discard: true }));
    ui.remove.addEventListener('click', removeVoice);
    ui.rerecord.addEventListener('click', start);
    root.ticketVoiceRecorder = { stopAndSave, hasVoice: () => Boolean(voiceFile), url: () => voiceUrl };
    window.addEventListener('pagehide', () => { stopTracks(); clearTimer(); });
  }

  setupVoiceRecorder(voiceRoot);
  form.dataset.wizardEnhanced = '';

  const serverErrorStep = steps.find(step => step.querySelector('.errorlist'));
  const initialStep = serverErrorStep ? Number(serverErrorStep.dataset.wizardStep) : 1;
  showStep(initialStep, { scroll: false });
  if (serverErrorStep) {
    const messages = [...serverErrorStep.querySelectorAll('.errorlist li')].map(item => item.textContent.trim()).filter(Boolean);
    const number = Number(serverErrorStep.dataset.wizardStep);
    requestAnimationFrame(() => showValidation(number, { message: messages.join(' '), fields: [] }));
  }
})();