'use strict';

// 局域网访问口令：服务端开启 accessToken 时，API 返回 401 会引导输入口令，
// 写入 cookie 后所有请求（fetch / 图片 / CSV 链接）自动携带，无需逐处改代码。
// 并发 401 共享同一次弹窗；用户取消只结束本轮，后续 401 仍可再次询问。
(function () {
  const origFetch = window.fetch.bind(window);
  let tokenPromise = null;
  window.fetch = async function (input, init) {
    const res = await origFetch(input, init);
    const url = typeof input === 'string' ? input : (input && input.url) || String(input || '');
    if (res.status === 401 && /\/(api|files)\b/.test(url)) {
      if (!tokenPromise) {
        tokenPromise = (async () => {
          const token = window.prompt('此服务已开启访问口令（accessToken），请输入：');
          if (token) {
            document.cookie = 'accessToken=' + encodeURIComponent(token) + '; path=/; max-age=31536000; SameSite=Lax';
          }
          tokenPromise = null; // 本轮结束；取消后下次 401 仍会询问
          return token || '';
        })();
      }
      const token = await tokenPromise;
      if (token) return origFetch(input, init);
    }
    return res;
  };
})();

(function () {
  const views = {
    crawl: document.getElementById('viewCrawl'),
    gen: document.getElementById('viewGen'),
    tasks: document.getElementById('viewTasks'),
    history: document.getElementById('viewHistory'),
    reports: document.getElementById('viewReports'),
    lake: document.getElementById('viewLake'),
    analysis: document.getElementById('viewAnalysis'),
    ask: document.getElementById('viewAsk'),
    settings: document.getElementById('viewSettings'),
    logs: document.getElementById('viewLogs'),
  };
  const navItems = document.querySelectorAll('.nav-item[data-view]');
  let settingsBound = false;
  let settingsLoaded = false;
  let logTimer = null;
  let lastLogSignature = '';

  async function loadModels(selectedModel) {
    const select = document.getElementById('settingsModel');
    const response = await fetch('/api/models');
    if (!response.ok) throw new Error('模型列表加载失败');
    const data = await response.json();
    select.innerHTML = '';
    for (const model of data.models || []) {
      const option = document.createElement('option');
      option.value = typeof model === 'string' ? model : model.id;
      option.textContent = typeof model === 'string' ? model : (model.label || model.name || model.id);
      option.selected = option.value === selectedModel;
      select.appendChild(option);
    }
  }

  async function loadSettings() {
    const response = await fetch('/api/settings');
    if (!response.ok) throw new Error('设置加载失败');
    const settings = await response.json();
    document.getElementById('settingsApiKey').value = settings.apiKey || '';
    document.getElementById('settingsApiBase').value = settings.apiBase || '';
    document.getElementById('settingsRootDir').value = settings.rootDir || '';
    document.getElementById('pageSizeInput').value = settings.pageSize || 50;
    document.getElementById('delayInput').value = settings.delayMs ?? 300;
    const cookieInput = document.getElementById('settingsCookie');
    cookieInput.value = '';
    cookieInput.placeholder = settings.cookieConfigured
      ? '已配置，输入新 Cookie 可更换'
      : '登录 melody.shop.ele.me 后从 DevTools 复制';
    document.getElementById('settingsChatModel').value = settings.chatModel || 'deepseek-v4.1-flash';
    document.getElementById('settingsChatApiBase').value = settings.chatApiBase || '';
    document.getElementById('settingsChatModelAgent').value = settings.chatModelAgent || '';
    document.getElementById('settingsChatJsonMode').checked = !!settings.chatJsonMode;
    const chatKeyInput = document.getElementById('settingsChatApiKey');
    chatKeyInput.value = settings.chatApiKey || '';
    chatKeyInput.placeholder = settings.chatKeyFallback
      ? '留空复用上方 API Key'
      : (settings.chatApiKey ? '已配置，输入新 Key 可更换' : '留空复用上方 API Key；否则填对话模型专用 Key');
    const tokenInput = document.getElementById('settingsAccessToken');
    tokenInput.value = '';
    tokenInput.placeholder = settings.accessTokenSet ? '已设置，留空保持不变（输入 - 清除）' : '未设置';
    document.getElementById('settingsAitableEnabled').checked = !!settings.aitableEnabled;
    document.getElementById('settingsAitableAppKey').value = settings.aitableAppKey || '';
    document.getElementById('settingsAitableBaseId').value = settings.aitableBaseId || '';
    document.getElementById('settingsAitableSheetDetail').value = settings.aitableSheetDetail || '门店明细';
    document.getElementById('settingsAitableSheetChain').value = settings.aitableSheetChain || '连锁汇总';
    document.getElementById('settingsAitableSheetCompany').value = settings.aitableSheetCompany || '公司汇总';
    const aitableSecretInput = document.getElementById('settingsAitableAppSecret');
    aitableSecretInput.value = '';
    aitableSecretInput.placeholder = settings.aitableSecretSet ? '已设置，留空保持不变（输入 - 清除）' : '未设置';
    await loadModels(settings.model);
  }

  function setPanelStatus(badgeId, message, ok) {
    const badge = document.getElementById(badgeId);
    if (!badge) return;
    badge.textContent = message;
    badge.className = 'badge ' + (ok === true ? 'badge-ok' : ok === false ? 'badge-fail' : 'badge-info');
  }

  async function saveSettingsPart(fields, buttonId, badgeId, successText = '已保存') {
    const button = document.getElementById(buttonId);
    button.disabled = true;
    setPanelStatus(badgeId, '保存中…');
    try {
      const response = await fetch('/api/settings', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(fields()),
      });
      const data = await response.json();
      if (!response.ok) throw new Error(data.error || `HTTP ${response.status}`);
      await loadSettings();
      setPanelStatus(badgeId, successText, true);
    } catch (error) {
      setPanelStatus(badgeId, error.message, false);
    } finally {
      button.disabled = false;
    }
  }

  const val = (id) => document.getElementById(id).value.trim();
  const hasNewSecret = (id) => { const v = val(id); return v && !v.includes('••••'); };

  function saveApiSettings() {
    return saveSettingsPart(() => ({
      apiKey: val('settingsApiKey'),
      model: document.getElementById('settingsModel').value,
      chatModel: document.getElementById('settingsChatModel').value,
      chatModelAgent: document.getElementById('settingsChatModelAgent').value,
      chatJsonMode: document.getElementById('settingsChatJsonMode').checked,
      ...(hasNewSecret('settingsChatApiKey') ? { chatApiKey: val('settingsChatApiKey') } : {}),
    }), 'btnSaveApi', 'apiSaveStatus');
  }

  function saveCrawlSettings() {
    return saveSettingsPart(() => ({
      rootDir: val('settingsRootDir'),
      pageSize: Number(document.getElementById('pageSizeInput').value),
      delayMs: Number(document.getElementById('delayInput').value),
      ...(val('settingsCookie') ? { cookie: val('settingsCookie') } : {}),
    }), 'btnSaveCrawl', 'crawlSaveStatus');
  }

  function saveSecuritySettings() {
    return saveSettingsPart(() => ({
      ...(val('settingsAccessToken') ? { accessToken: val('settingsAccessToken') } : {}),
    }), 'btnSaveSecurity', 'securitySaveStatus');
  }

  function saveAitableSettings() {
    return saveSettingsPart(() => ({
      aitableEnabled: document.getElementById('settingsAitableEnabled').checked,
      aitableAppKey: val('settingsAitableAppKey'),
      aitableBaseId: val('settingsAitableBaseId'),
      aitableSheetDetail: val('settingsAitableSheetDetail'),
      aitableSheetChain: val('settingsAitableSheetChain'),
      aitableSheetCompany: val('settingsAitableSheetCompany'),
      ...(val('settingsAitableAppSecret') ? { aitableAppSecret: val('settingsAitableAppSecret') } : {}),
    }), 'btnSaveAitable', 'aitableSaveStatus');
  }

  async function testImageApi() {
    const status = document.getElementById('imageTestStatus');
    const button = document.getElementById('btnTestImage');
    button.disabled = true;
    status.textContent = '测试中…';
    status.className = 'badge badge-info';
    try {
      const response = await fetch('/api/image/test', { method: 'POST' });
      const data = await response.json();
      if (!response.ok) throw new Error(data.error || `HTTP ${response.status}`);
      if (data.statusCode === 0) throw new Error(data.error || '网络不可达');
      const model = data.model || '';
      if (data.statusCode === 200 && data.modelFound) {
        status.textContent = '连通正常，模型在列表中';
        status.className = 'badge badge-ok';
      } else if (data.statusCode === 200 && Array.isArray(data.models)) {
        status.textContent = `服务可达（${data.models.length} 个模型）；列表中未找到 ${model}`;
        status.className = 'badge badge-warn';
      } else if (data.statusCode === 200) {
        status.textContent = '服务可达；该网关不提供模型列表，无法校验模型名';
        status.className = 'badge badge-warn';
      } else if (data.statusCode === 401 || data.statusCode === 403) {
        status.textContent = `服务返回 ${data.statusCode}：Key 可能无效`;
        status.className = 'badge badge-fail';
      } else {
        status.textContent = `服务返回 ${data.statusCode}`;
        status.className = 'badge badge-fail';
      }
    } catch (error) {
      status.textContent = '失败：' + error.message;
      status.className = 'badge badge-fail';
    } finally {
      button.disabled = false;
    }
  }

  async function testChatModel() {
    const status = document.getElementById('chatTestStatus');
    const button = document.getElementById('btnTestChat');
    button.disabled = true;
    status.textContent = '测试中…';
    status.className = 'badge badge-info';
    try {
      const response = await fetch('/api/chat/test', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          chatModel: document.getElementById('settingsChatModel').value.trim(),
          chatApiKey: document.getElementById('settingsChatApiKey').value.trim(),
        }),
      });
      const data = await response.json();
      if (!response.ok) throw new Error(data.error || `HTTP ${response.status}`);
      status.textContent = `连通正常：${data.reply || 'OK'}`;
      status.className = 'badge badge-ok';
    } catch (error) {
      status.textContent = '失败：' + error.message;
      status.className = 'badge badge-fail';
    } finally {
      button.disabled = false;
    }
  }

  function bindSettingsTabs() {
    const tabs = document.getElementById('settingsApiTabs');
    if (!tabs) return;
    tabs.addEventListener('click', (event) => {
      const btn = event.target.closest('button[data-tab]');
      if (!btn || btn.classList.contains('active')) return;
      tabs.querySelectorAll('button').forEach((b) => b.classList.toggle('active', b === btn));
      document.getElementById('settingsTabImage').hidden = btn.dataset.tab !== 'image';
      document.getElementById('settingsTabChat').hidden = btn.dataset.tab !== 'chat';
    });
  }

  // 云端动作（测试/推/拉）；badgeId 允许不同页面各自展示状态（设置页/数据采集页/数据中台页）
  async function aitableAction(kind, badgeId = 'aitableStatus', body = {}) {
    const status = document.getElementById(badgeId);
    const labels = { test: '测试连通中…', push: '推送中…', pull: '拉取中…' };
    if (status) {
      status.textContent = labels[kind];
      status.className = 'badge badge-info';
    }
    try {
      const res = await fetch(`/api/reports/aitable/${kind}`, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) });
      const data = await res.json();
      if (!res.ok) throw new Error(data.error || `HTTP ${res.status}`);
      if (kind === 'test') {
        // 逐表探测：缺哪张表报哪张（testConnection 返回 { ok, sheets: { detail/chain/company: {name, ok, hint} } }）
        const failed = Object.values(data.sheets || {}).filter((s) => !s.ok);
        if (status) {
          if (data.ok) { status.textContent = '三张表连通正常'; status.className = 'badge badge-ok'; }
          else {
            status.textContent = `不可读：${failed.map((s) => s.name).join('、')}`;
            status.className = 'badge badge-fail';
          }
        }
        return data;
      }
      if (kind === 'push') {
        if (data.pushed === 0) {
          if (status) { status.textContent = '本地与云端一致，无需推送'; status.className = 'badge badge-ok'; }
        } else {
          const stale = data.skippedStale ? `，跳过云端较新 ${data.skippedStale} 行` : '';
          if (status) { status.textContent = `已推送 ${data.pushed} 行（新增 ${data.created} / 更新 ${data.updated}${stale}）`; status.className = 'badge badge-ok'; }
        }
      } else {
        const detail = (data.accounts || []).map((a) => `${a.account} ${a.rows}行`).join('、') || '无数据';
        if (status) { status.textContent = `已拉取 ${data.pulled} 行：${detail}`; status.className = 'badge badge-ok'; }
      }
      return data;
    } catch (error) {
      if (status) { status.textContent = error.message; status.className = 'badge badge-fail'; }
      throw error;
    }
  }
  window.shanAitableAction = aitableAction;

  async function initSettings() {
    // 事件绑定与数据加载分离：加载失败重进设置页时不会重复 addEventListener
    if (!settingsBound) {
      settingsBound = true;
      bindSettingsTabs();
      if (new URLSearchParams(location.search).get('tab') === 'chat') {
        document.querySelector('#settingsApiTabs button[data-tab="chat"]')?.click();
      }
      document.getElementById('btnSaveApi').addEventListener('click', saveApiSettings);
      document.getElementById('btnSaveCrawl').addEventListener('click', saveCrawlSettings);
      document.getElementById('btnSaveSecurity').addEventListener('click', saveSecuritySettings);
      document.getElementById('btnSaveAitable').addEventListener('click', saveAitableSettings);
      document.getElementById('btnTestImage').addEventListener('click', testImageApi);
      document.getElementById('btnTestChat').addEventListener('click', testChatModel);
      document.getElementById('btnTestAitable').addEventListener('click', () => aitableAction('test'));
      const bindHelpPopover = (btnId, popId) => {
        const btn = document.getElementById(btnId);
        const pop = document.getElementById(popId);
        btn.addEventListener('click', (event) => {
          event.stopPropagation();
          pop.hidden = !pop.hidden;
          btn.classList.toggle('active', !pop.hidden);
          btn.setAttribute('aria-expanded', String(!pop.hidden));
        });
        document.addEventListener('click', (event) => {
          if (!pop.hidden && !event.target.closest('.conn-help-wrap')) {
            pop.hidden = true;
            btn.classList.remove('active');
            btn.setAttribute('aria-expanded', 'false');
          }
        });
      };
      bindHelpPopover('btnSecurityHelp', 'securityHelpPopover');
      bindHelpPopover('btnAitableHelp', 'aitableHelpPopover');
      document.getElementById('btnClearLog').addEventListener('click', () => {
        clearLogs().catch(() => {});
      });
    }
    if (!settingsLoaded) {
      try {
        await loadSettings();
        settingsLoaded = true;
      } catch (error) {
        setPanelStatus('apiSaveStatus', error.message, false);
      }
    }
  }

  function escapeLogText(value) {
    const div = document.createElement('div');
    div.textContent = String(value ?? '');
    return div.innerHTML;
  }

  function renderLogs(logs) {
    const panel = document.getElementById('logPanel');
    if (!panel) return;
    const sourceMap = { task: '任务', system: '系统' };
    const levelMap = { info: 'INFO', success: 'OK', warn: 'WARN', error: 'FAIL' };
    panel.innerHTML = logs.map((log) => {
      const level = levelMap[log.level] || 'INFO';
      const levelClass = log.level === 'success' ? 'ok' : log.level || 'info';
      return `
        <div class="log-line">
          <span class="log-ts">${escapeLogText(log.time)}</span>
          <span class="log-source ${log.source === 'system' ? 'system' : 'task'}">${sourceMap[log.source] || log.source}</span>
          <span class="log-lvl ${levelClass}">${level}</span>
          <span class="log-msg">${escapeLogText(log.message)}</span>
        </div>`;
    }).join('');
  }

  async function refreshLogs() {
    const response = await fetch('/api/logs');
    if (!response.ok) return;
    const data = await response.json();
    const logs = (data.logs || []).sort((a, b) => (b.seq || 0) - (a.seq || 0));
    const signature = logs.map((log) => `${log.seq}:${log.level}:${log.message}`).join('|');
    if (signature === lastLogSignature) return;
    lastLogSignature = signature;
    renderLogs(logs);
  }

  function startLogPolling() {
    if (logTimer) return;
    refreshLogs();
    logTimer = setInterval(refreshLogs, 1500);
  }

  function stopLogPolling() {
    if (logTimer) { clearInterval(logTimer); logTimer = null; }
  }

  async function clearLogs() {
    await fetch('/api/logs/clear', { method: 'POST' });
    lastLogSignature = '';
    await refreshLogs();
  }

  function switchView(name) {
    for (const [key, el] of Object.entries(views)) {
      el.classList.toggle('active', key === name);
    }
    navItems.forEach((n) => n.classList.toggle('active', n.dataset.view === name));
    if (name === 'crawl' && window.shanCrawlInit) window.shanCrawlInit();
    if (window.shanCrawlSetActive) window.shanCrawlSetActive(name === 'crawl'); // 离开采集页暂停状态轮询
    if (name === 'gen' && window.shanGenInit) window.shanGenInit();
    if (name === 'tasks' && window.shanTasksInit) window.shanTasksInit();
    if (window.shanTasksSetActive) window.shanTasksSetActive(name === 'tasks'); // 离开任务页清掉轮询
    if (name === 'history' && window.shanHistoryInit) window.shanHistoryInit();
    if (name === 'reports' && window.shanReportsInit) window.shanReportsInit();
    if (name === 'lake' && window.shanLakeInit) window.shanLakeInit(); // 明细 tab 激活时再懒加载报表
    if (name === 'analysis' && window.shanAnalysisActivate) window.shanAnalysisActivate();
    if (name === 'ask' && window.shanAskInit) window.shanAskInit();
    if (name === 'settings') initSettings();
    // 系统日志：仅日志页激活时轮询
    if (name === 'logs') startLogPolling();
    else stopLogPolling();
  }

  navItems.forEach((n) => n.addEventListener('click', () => switchView(n.dataset.view)));

  const requestedView = new URLSearchParams(location.search).get('view');
  switchView(views[requestedView] ? requestedView : 'crawl');

  const splash = document.getElementById('splash');
  if (splash) {
    setTimeout(() => splash.classList.add('hide'), 1800);
    setTimeout(() => splash.remove(), 2400);
  }
})();