(() => {
  const auth = window.TrafficAuth;
  const store = window.LinkHistoryStore;
  const current = auth.requireUser();
  if (!current) return;
  const $ = (id) => document.getElementById(id);
  let records = [];

  function ensureSession() {
    const active = auth.currentUser();
    if (active?.username === current.username) return true;
    location.replace('login.html?next=link-history.html');
    return false;
  }

  auth.watchSession(() => location.replace('login.html?next=link-history.html'));

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

  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 scopedRecords() {
    const all = store.list();
    return current.role === 'admin' ? all : all.filter((item) => item.username === current.username);
  }

  function filteredRecords() {
    const query = $('historySearch').value.trim().toLowerCase();
    return query ? records.filter((item) => `${item.username} ${item.platform} ${item.pkg} ${item.url}`.toLowerCase().includes(query)) : records;
  }

  function render() {
    records = scopedRecords();
    const filtered = filteredRecords();
    $('historyTotal').textContent = records.length;
    $('filterCount').textContent = `显示 ${filtered.length} 条`;
    $('clearHistory').disabled = records.length === 0;
    $('clearHistory').textContent = current.role === 'admin' ? '清空本机全部记录' : '清空我的记录';
    $('historyEmpty').classList.toggle('hidden', records.length > 0);
    $('historyTableWrap').classList.toggle('hidden', records.length === 0);
    $('historyTableBody').innerHTML = filtered.length ? filtered.map((item) => `<tr>
      <td><time datetime="${escapeHtml(item.createdAt)}">${escapeHtml(formatTime(item.createdAt))}</time></td>
      <td><span class="record-user">${escapeHtml(item.username)}</span></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)}">删除</button></td>
    </tr>`).join('') : '<tr><td colspan="6" class="table-empty">没有匹配的链接记录</td></tr>';
  }

  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();
    }
  }

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

  $('currentUser').innerHTML = `<b>${escapeHtml(current.username)}</b><small>${current.role === 'admin' ? '管理员' : '普通用户'}</small>`;
  $('historyScope').textContent = current.role === 'admin' ? '管理员可查看当前浏览器内全部用户的记录。' : '普通用户仅可查看当前浏览器内自己的记录。';
  $('logoutBtn').addEventListener('click', () => { auth.logout(); location.href = 'login.html'; });
  $('historySearch').addEventListener('input', render);
  $('clearHistory').addEventListener('click', () => {
    if (!ensureSession()) return;
    if (!records.length || !window.confirm(current.role === 'admin' ? '确定清空当前浏览器的全部链接记录吗？' : '确定清空你的全部链接记录吗？')) return;
    const result = current.role === 'admin' ? store.clear() : store.replace(store.list().filter((item) => item.username !== current.username));
    if (!result.ok) return showToast('清空失败，请检查浏览器存储权限');
    $('historySearch').value = ''; render(); showToast('链接记录已清空');
  });
  $('historyTableBody').addEventListener('click', async (event) => {
    if (!ensureSession()) return;
    const button = event.target.closest('button[data-action]');
    if (!button) return;
    const item = records.find((record) => record.id === button.dataset.id);
    if (!item) return;
    if (button.dataset.action === 'copy') { await copyText(item.url); showToast('链接已复制'); }
    else if (button.dataset.action === 'delete') { if (store.remove(item.id).ok) render(); }
  });
  window.addEventListener('storage', (event) => { if (event.key === store.STORAGE_KEY) render(); });
  render();
})();