(() => {
  const templates = window.LINK_TEMPLATES;
  if (!templates?.length) return;

  const { convertTrackingLink } = window.TrackingLinkConverter;
  const HISTORY_KEY = 'traffic_link_history_v1';
  const MAX_HISTORY = 50;
  const $ = (id) => document.getElementById(id);
  const platformSelect = $('platformSelect');
  const macroBody = $('macroTableBody');
  const output = $('urlOutput');
  let activeResult = null;
  let history = loadHistory();
  let inputTimer;

  $('templateCount').textContent = `${templates.length} 个平台模板`;
  templates.forEach((template, index) => platformSelect.add(new Option(template.name, index)));

  const activeTemplate = () => templates[Number(platformSelect.value || 0)];

  function renderPlatform() {
    const template = activeTemplate();
    const review = template.status.includes('待');
    $('platformStatus').innerHTML = `<span class="template-status ${review ? 'review' : ''}">${escapeHtml(template.status)}</span>`;
    renderMacros();
    if ($('originalLink').value.trim()) convertFromInput(false);
  }

  function renderMacros() {
    const query = $('macroSearch').value.trim().toLowerCase();
    const allMacros = activeTemplate().macros;
    const rows = allMacros.filter(([macro, desc]) => `${macro} ${desc}`.toLowerCase().includes(query));
    $('macroCount').textContent = `${allMacros.length} 个可用宏 · 点击展开`;
    macroBody.innerHTML = rows.length
      ? rows.map(([macro, desc]) => `<tr><td><code>${escapeHtml(macro)}</code></td><td>${escapeHtml(desc)}</td></tr>`).join('')
      : '<tr><td colspan="2" class="table-empty">没有匹配的媒体宏</td></tr>';
  }

  function renderChanges(changes) {
    const rows = changes.length ? changes : [{ key:'—', from:'原链接参数无需变化', to:'—' }];
    $('mappingTableBody').innerHTML = rows.map((change) => `<tr>
      <td><code>${escapeHtml(change.key)}</code></td>
      <td><span class="old-param">${escapeHtml(change.from || '(空值)')}</span></td>
      <td>${change.to ? `<code>${escapeHtml(change.to)}</code>` : '<span class="empty-param">留空</span>'}</td>
    </tr>`).join('');
  }

  function showEmpty() {
    activeResult = null;
    $('conversionEmpty').classList.remove('hidden');
    $('conversionResult').classList.add('hidden');
    $('detectedType').textContent = '等待链接';
    $('generatorMessage').textContent = '';
    $('copyStatus').textContent = '';
    $('copyLink').disabled = true;
  }

  function showError(message) {
    activeResult = null;
    $('generatorMessage').textContent = message;
    $('conversionEmpty').classList.remove('hidden');
    $('conversionResult').classList.add('hidden');
    $('detectedType').textContent = '无法识别';
    $('copyLink').disabled = true;
  }

  function convertFromInput(showRequiredMessage = true) {
    const original = $('originalLink').value.trim();
    $('copyStatus').textContent = '';
    if (!original) {
      showEmpty();
      if (showRequiredMessage) $('generatorMessage').textContent = '请先粘贴一条完整的 Tracking Link';
      return null;
    }

    try {
      const result = convertTrackingLink(original, activeTemplate());
      activeResult = result;
      const typeLabel = result.type === 'imp' ? 'Impression' : 'Click';
      $('detectedType').innerHTML = `<span class="type-chip">${typeLabel}</span>`;
      $('summaryType').textContent = typeLabel;
      $('replacementCount').textContent = result.changes.length;
      $('preservedCount').textContent = result.preservedCount;
      $('urlLength').textContent = `${result.url.length} chars`;
      output.textContent = result.url;
      renderChanges(result.changes);
      $('generatorMessage').textContent = result.changes.length ? '' : '链接有效，但没有发现需要替换的参数';
      $('conversionEmpty').classList.add('hidden');
      $('conversionResult').classList.remove('hidden');
      $('copyLink').disabled = false;
      return result;
    } catch (error) {
      showError(error.message === 'Invalid URL' ? '链接格式不正确，请粘贴包含 http:// 或 https:// 的完整链接' : error.message);
      return null;
    }
  }

  function convertAndSave() {
    const result = convertFromInput(true);
    if (!result) return;
    saveHistory(result);
    $('generatorMessage').textContent = '转换完成，已加入平台链接总结';
    showToast('转换完成并已保存记录');
  }

  function loadSample() {
    $('originalLink').value = 'https://trident.bigpinggo.com/l/click?advid=30&campid=91566789&platform=M_API_Self_Mintegral&pkg=com.salaryse.android&clickid={click_id}&offer_name={offer_name}&creative_id={creative_id}&creative_name={creative_name}&affiliate_id={affiliate_id}&idfa={idfa}&gaid={gaid}&imei={imei}&android_id={android_id}&mac={mac}&oaid={oaid}&uagent={ua}&os_platform={os_platform}&os_version={os_version}&device_model={device_model}&ip={ip}&country_code={country_code}&ext={ext}&rta_token={rta_token}&san_campid=91566789&adset_id=-1&c_cto=0';
    convertFromInput(false);
  }

  function loadHistory() {
    try {
      const stored = JSON.parse(localStorage.getItem(HISTORY_KEY) || '[]');
      return Array.isArray(stored) ? stored.filter((item) => item?.id && item?.url).slice(0, MAX_HISTORY) : [];
    } catch (_) { return []; }
  }

  function persistHistory() {
    try {
      localStorage.setItem(HISTORY_KEY, JSON.stringify(history));
      return true;
    } catch (_) {
      showToast('浏览器无法保存记录，请检查存储权限');
      return false;
    }
  }

  function extractPkg(url) {
    try { return new URL(url).searchParams.get('pkg') || '—'; }
    catch (_) { return '—'; }
  }

  function saveHistory(result) {
    const platform = activeTemplate().name;
    const pkg = extractPkg(result.url);
    history = history.filter((item) => item.url !== result.url);
    history.unshift({
      id: `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`,
      platform,
      pkg,
      type: result.type,
      createdAt: new Date().toISOString(),
      url: result.url
    });
    history = history.slice(0, MAX_HISTORY);
    persistHistory();
    renderHistory();
  }

  function formatTime(value) {
    const date = new Date(value);
    if (Number.isNaN(date.getTime())) return '—';
    return new Intl.DateTimeFormat('zh-CN', { year:'numeric', month:'2-digit', day:'2-digit', hour:'2-digit', minute:'2-digit', second:'2-digit', hour12:false }).format(date);
  }

  function renderHistory() {
    $('historyCount').textContent = history.length;
    $('clearHistory').disabled = history.length === 0;
    $('historyEmpty').classList.toggle('hidden', history.length > 0);
    $('historyTableWrap').classList.toggle('hidden', history.length === 0);
    $('historyTableBody').innerHTML = history.map((item) => `<tr>
      <td><time datetime="${escapeHtml(item.createdAt)}">${escapeHtml(formatTime(item.createdAt))}</time></td>
      <td><span class="history-platform">${escapeHtml(item.platform)}</span></td>
      <td><code class="history-pkg">${escapeHtml(item.pkg)}</code></td>
      <td><div class="history-link"><span title="${escapeHtml(item.url)}">${escapeHtml(item.url)}</span><button type="button" data-action="copy" data-id="${escapeHtml(item.id)}">复制</button></div></td>
      <td><button class="delete-record" type="button" data-action="delete" data-id="${escapeHtml(item.id)}" aria-label="删除这条记录">删除</button></td>
    </tr>`).join('');
  }

  async function copyText(text) {
    try { await navigator.clipboard.writeText(text); }
    catch (_) {
      const area = document.createElement('textarea');
      area.value = text;
      area.style.position = 'fixed';
      area.style.opacity = '0';
      document.body.appendChild(area);
      area.select();
      document.execCommand('copy');
      area.remove();
    }
  }

  async function copyUrl() {
    if (!activeResult) return;
    await copyText(activeResult.url);
    $('copyStatus').textContent = '已复制';
    showToast('转换后的平台链接已复制');
  }

  function showToast(message) {
    const toast = $('toast');
    toast.textContent = message;
    toast.classList.add('show');
    clearTimeout(showToast.timer);
    showToast.timer = setTimeout(() => toast.classList.remove('show'), 1800);
  }

  function escapeHtml(value) {
    return String(value).replace(/[&<>"']/g, (char) => ({ '&':'&amp;', '<':'&lt;', '>':'&gt;', '"':'&quot;', "'":'&#39;' })[char]);
  }

  platformSelect.addEventListener('change', renderPlatform);
  $('macroSearch').addEventListener('input', renderMacros);
  $('convertLink').addEventListener('click', convertAndSave);
  $('sampleLink').addEventListener('click', loadSample);
  $('copyLink').addEventListener('click', copyUrl);
  $('clearConverter').addEventListener('click', () => { $('originalLink').value = ''; showEmpty(); $('originalLink').focus(); });
  $('clearHistory').addEventListener('click', () => {
    if (!history.length || !window.confirm('确定清空全部平台链接记录吗？')) return;
    history = [];
    persistHistory();
    renderHistory();
  });
  $('historyTableBody').addEventListener('click', async (event) => {
    const button = event.target.closest('button[data-action]');
    if (!button) return;
    const item = history.find((record) => record.id === button.dataset.id);
    if (!item) return;
    if (button.dataset.action === 'copy') {
      await copyText(item.url);
      showToast('历史链接已复制');
    } else if (button.dataset.action === 'delete') {
      history = history.filter((record) => record.id !== item.id);
      persistHistory();
      renderHistory();
    }
  });
  $('originalLink').addEventListener('input', () => {
    clearTimeout(inputTimer);
    inputTimer = setTimeout(() => convertFromInput(false), 220);
  });

  renderPlatform();
  showEmpty();
  renderHistory();
})();