(() => {
  const state = { token: '', queue: '', base: location.origin, timer: null, connected: false, loading: false };
  const $ = (id) => document.getElementById(id);
  const text = (id, value) => { const el = $(id); if (el) el.textContent = value; };
  const sessionQueue = sessionStorage.getItem('orbit.console.queue') || '';
  $('api-url').value = location.origin;
  $('queue-id').value = sessionQueue;

  function showToast(message) {
    const toast = $('toast'); toast.textContent = message; toast.classList.add('show');
    clearTimeout(showToast.timer); showToast.timer = setTimeout(() => toast.classList.remove('show'), 2800);
  }
  function formatTime(value) {
    if (!value) return '—';
    const date = new Date(value); if (Number.isNaN(date.getTime())) return String(value);
    return new Intl.DateTimeFormat('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' }).format(date);
  }
  function shortID(id) { return id && id.length > 14 ? `${id.slice(0, 8)}…${id.slice(-4)}` : (id || '—'); }
  function stateClass(value) { return String(value || '').toLowerCase(); }
  function extractItems(payload) { return payload?.data?.items || payload?.items || []; }
  async function request(path, options = {}) {
    const headers = { Accept: 'application/json', ...(options.headers || {}) };
    if (state.token) headers.Authorization = `Bearer ${state.token}`;
    const response = await fetch(`${state.base.replace(/\/$/, '')}${path}`, { ...options, headers });
    const raw = await response.text(); let body = {};
    try { body = raw ? JSON.parse(raw) : {}; } catch { body = { message: raw }; }
    if (!response.ok) throw new Error(body?.error?.message || body?.message || `HTTP ${response.status}`);
    return body;
  }
  function setConnection(connected, detail = '') {
    state.connected = connected;
    const authenticated = connected && Boolean(state.token && state.queue);
    $('connection-state').textContent = authenticated ? '已连接' : (connected ? '服务在线' : '未连接');
    $('connection-state').classList.toggle('ready', connected);
    $('side-status').textContent = authenticated ? '环境已连接' : (connected ? '服务在线' : '等待连接');
    $('side-endpoint').textContent = connected ? state.base : 'API 未连接';
    $('side-progress').style.width = connected ? '100%' : '0%';
    document.querySelector('.status-dot').classList.toggle('ready', connected);
    document.querySelector('.live-chip').classList.toggle('ready', connected);
    $('live-label').textContent = connected ? '环境在线' : '本地环境';
    if (detail) showToast(detail);
  }
  async function loadHealth() {
    try {
      const [live, version] = await Promise.all([request('/health/live'), request('/version')]);
      text('metric-health', live?.status === 'alive' ? '在线' : '异常');
      text('metric-health-sub', `Go ${version?.go_version || '—'} · API v${version?.http_protocol_version || '—'}`);
      text('side-status', '环境已连接');
      return version;
    } catch (error) {
      text('metric-health', '离线'); text('metric-health-sub', error.message); setConnection(false); throw error;
    }
  }
  function renderTasks(items) {
    text('task-count', `${items.length} 项`); text('metric-tasks', String(items.length));
    const counts = items.reduce((acc, item) => { const key = stateClass(item.state); acc[key] = (acc[key] || 0) + 1; return acc; }, {});
    const total = Math.max(items.length, 1); const width = (name) => `${(counts[name] || 0) / total * 100}%`;
    $('task-bar-succeeded').style.width = width('succeeded'); $('task-bar-running').style.width = width('running'); $('task-bar-waiting').style.width = `${((counts.waiting || 0) + (counts.pending || 0)) / total * 100}%`; $('task-bar-other').style.width = `${((counts.failed || 0) + (counts.cancelled || 0) + (counts.needs_review || 0)) / total * 100}%`;
    text('metric-tasks-sub', `${counts.succeeded || 0} 成功 · ${counts.running || 0} 执行中`);
    const body = $('task-table');
    if (!items.length) { body.innerHTML = '<tr><td colspan="5" class="empty-row"><span class="empty-icon">◇</span><b>当前队列没有任务</b><small>提交任务后，这里会自动显示最新状态</small></td></tr>'; return; }
    body.innerHTML = items.slice(0, 8).map(item => `<tr><td><div class="task-id"><b>${escapeHTML(shortID(item.id))}</b><small>${escapeHTML(item.business_key || '无业务键')}</small></div></td><td class="task-processor">${escapeHTML(item.handler || '—')}<br><small>${escapeHTML(item.handler_version || '')}</small></td><td><span class="state-pill ${stateClass(item.state)}">${escapeHTML(item.state || 'UNKNOWN')}</span></td><td>${escapeHTML(item.revision || '—')}</td><td>${escapeHTML(formatTime(item.created_at))}</td></tr>`).join('');
  }
  function renderSchedules(items) {
    text('metric-schedules', String(items.length));
    const el = $('schedule-list'); if (!items.length) { el.innerHTML = '<div class="empty-compact"><span>◷</span><div><b>当前没有定时计划</b><small>需要 schedules:read 权限</small></div></div>'; return; }
    el.innerHTML = items.slice(0, 4).map(item => `<div class="list-row"><div class="list-avatar">◷</div><div class="list-copy"><b>${escapeHTML(item.name || shortID(item.id))}</b><small>${escapeHTML(item.queue_id ? shortID(item.queue_id) : '计划')}</small></div><div class="list-meta">${escapeHTML(item.enabled === false ? '已暂停' : '运行中')}</div></div>`).join('');
  }
  function renderWorkflows(items) {
    text('metric-workflows', String(items.length)); text('metric-workflows-sub', items.length ? '最近实例' : '当前没有实例');
    const el = $('workflow-list'); if (!items.length) { el.innerHTML = '<div class="empty-compact"><span>⌘</span><div><b>当前没有流程实例</b><small>需要 workflows:read 权限</small></div></div>'; return; }
    el.innerHTML = items.slice(0, 4).map(item => `<div class="list-row"><div class="list-avatar">⌘</div><div class="list-copy"><b>${escapeHTML(item.business_key || shortID(item.id))}</b><small>${escapeHTML(item.state || '—')}</small></div><div class="list-meta">${escapeHTML(formatTime(item.created_at))}</div></div>`).join('');
  }
  function renderSubscriptions(items) {
    text('metric-subscriptions', String(items.length));
    const active = items.filter(item => item.enabled !== false).length; $('subscription-meter-fill').style.width = `${items.length ? active / items.length * 100 : 0}%`;
    text('metric-subscriptions-sub', items.length ? `${active} 个已启用 · 交付自动恢复` : '当前没有结果订阅');
    const el = $('subscription-list'); if (!items.length) { el.innerHTML = '<div class="empty-compact"><span>⌁</span><div><b>当前没有结果订阅</b><small>需要 events:read 权限</small></div></div>'; return; }
    el.innerHTML = items.slice(0, 4).map(item => `<div class="list-row"><div class="list-avatar">⌁</div><div class="list-copy"><b>${escapeHTML(item.name || shortID(item.id))}</b><small>待处理 ${escapeHTML(String(item.pending_count ?? 0))} · 上限 ${escapeHTML(String(item.max_pending ?? '—'))}</small></div><div class="list-meta">${item.enabled === false ? '已暂停' : '已启用'}</div></div>`).join('');
  }
  function escapeHTML(value) { return String(value ?? '').replace(/[&<>'"]/g, char => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', "'": '&#39;', '"': '&quot;' }[char])); }
  async function refresh() {
    if (state.loading) return; state.loading = true; $('refresh-button').classList.add('spinning');
    try {
      await loadHealth();
      if (!state.token || !state.queue) { setConnection(true); text('last-updated', `服务在线 · ${formatTime(new Date())}`); return; }
      const tasks = await request(`/v1/tasks?queue_id=${encodeURIComponent(state.queue)}&limit=20`); renderTasks(extractItems(tasks));
      const optional = await Promise.allSettled([
        request(`/v1/schedules?queue_id=${encodeURIComponent(state.queue)}&limit=20`),
        request('/v1/workflows?limit=20'),
        request(`/v1/subscriptions?queue_id=${encodeURIComponent(state.queue)}&limit=20`),
      ]);
      if (optional[0].status === 'fulfilled') renderSchedules(extractItems(optional[0].value));
      if (optional[1].status === 'fulfilled') renderWorkflows(extractItems(optional[1].value));
      if (optional[2].status === 'fulfilled') renderSubscriptions(extractItems(optional[2].value));
      setConnection(true); text('last-updated', `刚刚更新 · ${formatTime(new Date())}`); text('metric-health-sub', '数据库与 Schema 正常');
    } catch (error) { setConnection(false); showToast(`连接失败：${error.message}`); text('last-updated', '刷新失败'); }
    finally { state.loading = false; $('refresh-button').classList.remove('spinning'); }
  }
  function connect() {
    state.base = $('api-url').value.trim().replace(/\/$/, '') || location.origin; state.token = $('token').value.trim(); state.queue = $('queue-id').value.trim();
    sessionStorage.setItem('orbit.console.queue', state.queue); refresh();
  }
  $('connect-button').addEventListener('click', connect); $('connect-hero').addEventListener('click', () => $('connection-panel').scrollIntoView({ behavior: 'smooth', block: 'center' })); $('refresh-button').addEventListener('click', refresh);
  $('reveal-token').addEventListener('click', () => { const field = $('token'); field.type = field.type === 'password' ? 'text' : 'password'; $('reveal-token').textContent = field.type === 'password' ? '显示' : '隐藏'; });
  $('credential-file').addEventListener('change', event => { const file = event.target.files?.[0]; if (!file) return; const reader = new FileReader(); reader.onload = () => { try { const credential = JSON.parse(reader.result); $('token').value = credential.token || ''; $('queue-id').value = credential.queue_id || ''; showToast('凭据已读取，只保留在当前页面内'); } catch { showToast('凭据 JSON 无法解析'); } }; reader.readAsText(file); });
  document.querySelectorAll('[data-scroll]').forEach(button => button.addEventListener('click', () => { const target = $(button.dataset.scroll); if (target) target.scrollIntoView({ behavior: 'smooth', block: 'start' }); document.querySelectorAll('.nav-item').forEach(item => item.classList.toggle('active', item.dataset.scroll === button.dataset.scroll)); }));
  refresh(); state.timer = setInterval(refresh, 10000);
})();