const HOTNESS_AUTH_TOKEN_KEY = "video-hotness-auth-token-v1";
const authGate = document.querySelector("#auth-gate");
const authPassword = document.querySelector("#auth-password");
const authMessage = document.querySelector("#auth-message");
const form = document.querySelector("#collect-form");
const input = document.querySelector("#program-name");
const button = document.querySelector("#collect-button");
const exportLink = document.querySelector("#export-link");
const statusDot = document.querySelector("#status-dot");
const statusText = document.querySelector("#status-text");
const tableTitle = document.querySelector("#table-title");
const runCount = document.querySelector("#run-count");
const cards = document.querySelector("#cards");
const programList = document.querySelector("#program-list");
const networkLinks = document.querySelector("#network-links");
const collectPlatformBox = document.querySelector(".collect-platforms");
const mobileNote = document.querySelector("#mobile-note");
const mobileDeviceNameInput = document.querySelector("#mobile-device-name");
const saveDeviceNameButton = document.querySelector("#save-device-name-button");
const saveOfflineButton = document.querySelector("#save-offline-button");
const offlineCount = document.querySelector("#offline-count");
const offlineList = document.querySelector("#offline-list");
const clearOfflineButton = document.querySelector("#clear-offline-button");
const syncOfflineButton = document.querySelector("#sync-offline-button");
const mobileBatchText = document.querySelector("#mobile-batch-text");
const saveBatchOfflineButton = document.querySelector("#save-batch-offline-button");
const offlineStatus = document.querySelector("#offline-status");
const installHint = document.querySelector("#install-hint");
const installStatus = document.querySelector("#install-status");
const installAppButton = document.querySelector("#install-app-button");
const mobileServerUrlInput = document.querySelector("#mobile-server-url");
const saveMobileServerButton = document.querySelector("#save-mobile-server-button");
const testMobileServerButton = document.querySelector("#test-mobile-server-button");
const mobileBindingSummary = document.querySelector("#mobile-binding-summary");
const mobileAppState = document.querySelector("#mobile-app-state");

const MOBILE_DRAFTS_KEY = "video-hotness-mobile-drafts-v1";
const MOBILE_DEVICE_KEY = "video-hotness-mobile-device-v1";
const MOBILE_SERVER_KEY = "video-hotness-mobile-server-v1";
const platformOrder = ["tencent", "youku", "iqiyi", "mgtv"];
const platformLabels = {
  tencent: "腾讯视频",
  youku: "优酷",
  iqiyi: "爱奇艺",
  mgtv: "芒果TV",
};
const metricLabels = {
  tencent: "热度值",
  youku: "热度值",
  iqiyi: "内容热度",
  mgtv: "播放次数",
};
const urlInputs = {
  tencent: document.querySelector("#url-tencent"),
  youku: document.querySelector("#url-youku"),
  iqiyi: document.querySelector("#url-iqiyi"),
  mgtv: document.querySelector("#url-mgtv"),
};

let activeName = "";
let dirtyUrlInputs = new Set();
let deferredInstallPrompt = null;
let appStarted = false;

for (const [platform, element] of Object.entries(urlInputs)) {
  element.addEventListener("input", () => {
    dirtyUrlInputs.add(platform);
  });
}

input.addEventListener("input", () => {
  const name = input.value.trim();
  if (activeName && name !== activeName) {
    clearUrlInputs();
  }
});

form.addEventListener("submit", async (event) => {
  event.preventDefault();
  const name = input.value.trim();
  if (!name) return;

  activeName = name;
  const platforms = readCollectPlatforms();
  if (platforms.length === 0) {
    setStatus("error", "请至少选择一个采集平台");
    return;
  }
  setBusy(true, `正在采集《${name}》`);

  try {
    const payload = await postJson("/api/collect", { name, urls: readUrlInputs(), platforms });
    renderHistory(payload.history);
    await refreshPrograms();
    setStatus("ok", `已新增 ${formatTime(payload.collection.captured_at)} 这一列`);
  } catch (error) {
    setStatus("error", error.message);
  } finally {
    setBusy(false);
  }
});

collectPlatformBox.addEventListener("change", (event) => {
  if (!event.target.matches("input[type='checkbox']")) return;
  updateCollectPlatformState();
});

saveOfflineButton.addEventListener("click", () => {
  saveOfflineDraft();
});

saveDeviceNameButton.addEventListener("click", () => {
  saveMobileDeviceName();
});

saveMobileServerButton.addEventListener("click", () => {
  saveMobileServerUrl();
});

testMobileServerButton.addEventListener("click", () => {
  testMobileServerConnection();
});

installAppButton.addEventListener("click", () => {
  installMobileApp();
});

saveBatchOfflineButton.addEventListener("click", () => {
  saveBatchOfflineDrafts();
});

syncOfflineButton.addEventListener("click", () => {
  syncOfflineDrafts();
});

clearOfflineButton.addEventListener("click", () => {
  const drafts = readOfflineDrafts();
  if (drafts.length === 0) return;
  if (!window.confirm(`确定清空 ${drafts.length} 条手机待同步记录吗？`)) return;
  localStorage.setItem(MOBILE_DRAFTS_KEY, "[]");
  renderOfflineDrafts();
  setStatus("ok", "已清空手机待同步列表");
});

offlineList.addEventListener("click", (event) => {
  const editButton = event.target.closest("[data-edit-draft]");
  if (editButton) {
    editOfflineDraft(editButton.dataset.editDraft);
    return;
  }

  const deleteButton = event.target.closest("[data-delete-draft]");
  if (deleteButton) {
    deleteOfflineDraft(deleteButton.dataset.deleteDraft);
  }
});

programList.addEventListener("click", async (event) => {
  const item = event.target.closest("[data-name]");
  if (!item) return;
  activeName = item.dataset.name;
  input.value = activeName;
  await loadHistory(activeName);
});

window.addEventListener("online", updateOfflineStatus);
window.addEventListener("offline", updateOfflineStatus);
window.addEventListener("beforeinstallprompt", (event) => {
  event.preventDefault();
  deferredInstallPrompt = event;
  updateInstallPrompt("ready");
});
window.addEventListener("appinstalled", () => {
  deferredInstallPrompt = null;
  updateInstallPrompt("installed");
});

initializeApp();

async function initializeApp() {
  if (!(await ensureAccessAuth())) return;
  startApp();
}

async function startApp() {
  if (appStarted) return;
  appStarted = true;
  updateCollectPlatformState();
  mobileDeviceNameInput.value = mobileDeviceName();
  mobileServerUrlInput.value = mobileServerBaseUrl();
  registerMobileServiceWorker();
  updateInstallPrompt(isStandaloneDisplay() ? "installed" : "manual");
  updateOfflineStatus();
  updateMobileBindingSummary();
  renderOfflineDrafts();
  await Promise.all([refreshPrograms(), loadNetworkLinks()]);
}

async function registerMobileServiceWorker() {
  if (!("serviceWorker" in navigator)) {
    if (installStatus) installStatus.textContent = "当前浏览器不支持离线缓存，可继续使用手机待同步列表。";
    return;
  }
  try {
    await navigator.serviceWorker.register("/mobile-sw.js");
  } catch {
    if (installStatus) installStatus.textContent = "离线缓存注册失败，可刷新后重试。";
  }
}

async function installMobileApp() {
  if (!deferredInstallPrompt) {
    updateInstallPrompt("manual");
    return;
  }
  installAppButton.disabled = true;
  deferredInstallPrompt.prompt();
  const choice = await deferredInstallPrompt.userChoice.catch(() => ({ outcome: "dismissed" }));
  deferredInstallPrompt = null;
  installAppButton.disabled = false;
  updateInstallPrompt(choice.outcome === "accepted" ? "installed" : "manual");
}

function updateInstallPrompt(state) {
  if (!installStatus || !installAppButton) return;
  installHint.classList.toggle("install-ready", state === "ready");
  if (state === "ready") {
    installStatus.textContent = "当前浏览器支持直接安装，点击按钮后会添加到手机桌面。";
    installAppButton.hidden = false;
    return;
  }
  installAppButton.hidden = true;
  installStatus.textContent = state === "installed"
    ? "已用 App 模式打开；离线录入和待同步列表可继续使用。"
    : "如果没有安装按钮，请在手机浏览器菜单选择“添加到主屏幕”。";
}

function isStandaloneDisplay() {
  return window.matchMedia?.("(display-mode: standalone)").matches || window.navigator.standalone === true;
}

function updateOfflineStatus() {
  if (!offlineStatus) return;
  const online = navigator.onLine;
  const pendingDrafts = readOfflineDrafts().filter((draft) => draft.sync_status !== "synced");
  if (mobileAppState) {
    mobileAppState.textContent = online ? "在线" : "离线";
    mobileAppState.classList.toggle("offline", !online);
  }
  offlineStatus.classList.toggle("offline", !online);
  offlineStatus.innerHTML = online && pendingDrafts.length
    ? `<strong>有 ${pendingDrafts.length} 条可同步</strong><span>电脑可访问时点击“同步到电脑”，同步后会显示电脑已收到。</span>`
    : online
    ? `<strong>离线录入已准备</strong><span>首次打开后会缓存手机版；离开局域网时仍可保存待同步。</span>`
    : `<strong>当前离线</strong><span>可以继续录入并保存待同步；回到局域网后再同步到电脑。</span>`;
}

async function loadHistory(name) {
  setStatus("busy", `正在读取《${name}》历史`);
  try {
    const payload = await getJson(`/api/history?name=${encodeURIComponent(name)}`);
    renderHistory(payload.history);
    setStatus("ok", `已载入《${name}》`);
  } catch (error) {
    setStatus("error", error.message);
  }
}

async function refreshPrograms() {
  try {
    const payload = await getJson("/api/programs");
    renderPrograms(payload.programs || []);
  } catch {
    renderPrograms([]);
  }
}

async function loadNetworkLinks() {
  try {
    const payload = await getJson("/api/network");
    const urls = payload.urls || [];
    networkLinks.innerHTML = urls.length
      ? urls.map((url) => `<a href="${escapeAttribute(url)}">${escapeHtml(url)}</a>`).join("<br>")
      : "没有读取到局域网地址，可先用本机浏览器访问。";
  } catch {
    networkLinks.textContent = "局域网地址读取失败。";
  }
}

function mobileServerBaseUrl() {
  const saved = (localStorage.getItem(MOBILE_SERVER_KEY) || "").trim();
  return saved || window.location.origin;
}

function normalizeServerUrl(value) {
  const text = String(value || "").trim().replace(/\/+$/, "");
  if (!text) return "";
  try {
    const parsed = new URL(text);
    return parsed.origin;
  } catch {
    return "";
  }
}

function apiUrl(path) {
  return `${mobileServerBaseUrl()}${path}`;
}

function saveMobileServerUrl() {
  const normalized = normalizeServerUrl(mobileServerUrlInput.value);
  if (!normalized) {
    setStatus("error", "请输入正确的电脑或 NAS 地址，例如 http://192.168.18.120:3001");
    return;
  }
  localStorage.setItem(MOBILE_SERVER_KEY, normalized);
  mobileServerUrlInput.value = normalized;
  updateMobileBindingSummary();
  setStatus("ok", `已绑定地址：${normalized}`);
}

async function testMobileServerConnection() {
  const normalized = normalizeServerUrl(mobileServerUrlInput.value) || mobileServerBaseUrl();
  if (normalized !== mobileServerBaseUrl()) {
    localStorage.setItem(MOBILE_SERVER_KEY, normalized);
    mobileServerUrlInput.value = normalized;
  }
  testMobileServerButton.disabled = true;
  setStatus("busy", "正在测试电脑端连接");
  try {
    const payload = await getJson("/api/network");
    updateMobileBindingSummary({ ok: true });
    setStatus("ok", `连接正常，读取到 ${(payload.urls || []).length} 个手机访问地址`);
  } catch (error) {
    updateMobileBindingSummary({ ok: false, error: error.message });
    setStatus("error", `连接失败：${error.message}`);
  } finally {
    testMobileServerButton.disabled = false;
  }
}

function updateMobileBindingSummary(result = null) {
  const base = mobileServerBaseUrl();
  const pendingDrafts = readOfflineDrafts().filter((draft) => draft.sync_status !== "synced").length;
  const resultText = result?.ok ? " · 连接正常" : result?.error ? ` · 连接失败：${result.error}` : "";
  mobileBindingSummary.textContent = `当前绑定：${base} · 待同步 ${pendingDrafts} 条${resultText}`;
}

function renderPrograms(programs) {
  if (programs.length === 0) {
    programList.innerHTML = `<div class="empty">暂无历史</div>`;
    return;
  }

  programList.innerHTML = programs.map((program) => `
    <button class="program-item ${program.name === activeName ? "active" : ""}" data-name="${escapeHtml(program.name)}">
      ${escapeHtml(program.name)}
    </button>
  `).join("");
}

function saveOfflineDraft() {
  const name = input.value.trim();
  if (!name) {
    setStatus("error", "请先输入节目名");
    return;
  }

  const draft = createOfflineDraft({
    name,
    note: mobileNote.value.trim(),
    urls: readAllUrlInputs(),
    platforms: readCollectPlatforms(),
  });

  const drafts = readOfflineDrafts();
  drafts.unshift(draft);
  localStorage.setItem(MOBILE_DRAFTS_KEY, JSON.stringify(drafts.slice(0, 200)));
  renderOfflineDrafts();
  updateOfflineStatus();
  updateMobileBindingSummary();
  setStatus("ok", `已保存《${name}》到手机待同步`);
}

function saveBatchOfflineDrafts() {
  const names = parseMobileBatchNames(mobileBatchText.value);
  if (names.length === 0) {
    setStatus("error", "请先粘贴节目名单");
    return;
  }

  const drafts = readOfflineDrafts();
  const newDrafts = names.map((name) => createOfflineDraft({
    name,
    note: "批量离线录入",
    urls: {},
    platforms: readCollectPlatforms(),
  }));
  localStorage.setItem(MOBILE_DRAFTS_KEY, JSON.stringify([...newDrafts, ...drafts].slice(0, 200)));
  mobileBatchText.value = "";
  renderOfflineDrafts();
  updateOfflineStatus();
  updateMobileBindingSummary();
  setStatus("ok", `已批量保存 ${newDrafts.length} 条待同步`);
}

function parseMobileBatchNames(text) {
  const seen = new Set();
  const names = [];
  for (const line of String(text || "").split(/\r?\n/)) {
    const name = line.split(/[,，\t]/)[0].trim();
    if (!name || seen.has(name) || /节目|名称|片名/.test(name)) continue;
    seen.add(name);
    names.push(name);
  }
  return names;
}

function createOfflineDraft({ name, note = "", urls = {}, platforms = [] }) {
  return {
    id: `${Date.now()}-${Math.random().toString(16).slice(2)}`,
    name,
    note,
    urls,
    platforms,
    device_name: mobileDeviceName(),
    created_at: new Date().toISOString(),
    sync_status: "pending",
  };
}

function readOfflineDrafts() {
  try {
    const value = JSON.parse(localStorage.getItem(MOBILE_DRAFTS_KEY) || "[]");
    return Array.isArray(value) ? value.filter((draft) => draft?.name) : [];
  } catch {
    return [];
  }
}

function renderOfflineDrafts() {
  const drafts = readOfflineDrafts();
  const pendingDrafts = drafts.filter((draft) => draft.sync_status !== "synced");
  offlineCount.textContent = String(drafts.length);
  if (drafts.length === 0) {
    offlineList.innerHTML = `<div class="empty">暂无手机待同步记录</div>`;
    clearOfflineButton.disabled = true;
    syncOfflineButton.disabled = true;
    return;
  }

  clearOfflineButton.disabled = false;
  syncOfflineButton.disabled = pendingDrafts.length === 0;
  offlineList.innerHTML = drafts.slice(0, 20).map((draft) => {
    const urlCount = Object.values(draft.urls || {}).filter(Boolean).length;
    const note = draft.note ? `<div class="offline-meta">${escapeHtml(draft.note)}</div>` : "";
    const isSynced = draft.sync_status === "synced";
    const syncLabel = isSynced ? "已同步" : "待同步";
    return `
      <article class="offline-item ${isSynced ? "synced" : ""}">
        <div class="offline-title">
          <strong>${escapeHtml(draft.name)}</strong>
          <span class="sync-status ${isSynced ? "synced" : "pending"}">${syncLabel}</span>
        </div>
        <div class="offline-meta">${formatTime(draft.created_at)} · ${urlCount} 个链接 · ${escapeHtml((draft.platforms || []).map((platform) => platformLabels[platform] || platform).join("、") || "未选平台")}</div>
        ${note}
        <div class="offline-actions">
          <button type="button" data-edit-draft="${escapeAttribute(draft.id)}">编辑</button>
          <button type="button" data-delete-draft="${escapeAttribute(draft.id)}">删除</button>
        </div>
      </article>
    `;
  }).join("");
}

function editOfflineDraft(id) {
  const drafts = readOfflineDrafts();
  const draft = drafts.find((item) => item.id === id);
  if (!draft) return;
  const nextName = window.prompt("修改节目名", draft.name);
  if (nextName === null) return;
  const cleanName = nextName.trim();
  if (!cleanName) {
    setStatus("error", "节目名不能为空");
    return;
  }
  const nextNote = window.prompt("修改备注", draft.note || "");
  if (nextNote === null) return;
  const updated = drafts.map((item) => item.id === id
    ? { ...item, name: cleanName, note: nextNote.trim(), sync_status: "pending", edited_at: new Date().toISOString() }
    : item);
  localStorage.setItem(MOBILE_DRAFTS_KEY, JSON.stringify(updated));
  renderOfflineDrafts();
  updateOfflineStatus();
  updateMobileBindingSummary();
  setStatus("ok", `已更新《${cleanName}》`);
}

function deleteOfflineDraft(id) {
  const drafts = readOfflineDrafts();
  const draft = drafts.find((item) => item.id === id);
  if (!draft) return;
  if (!window.confirm(`删除《${draft.name}》这条手机记录吗？`)) return;
  localStorage.setItem(MOBILE_DRAFTS_KEY, JSON.stringify(drafts.filter((item) => item.id !== id)));
  renderOfflineDrafts();
  updateOfflineStatus();
  updateMobileBindingSummary();
  setStatus("ok", `已删除《${draft.name}》`);
}

async function syncOfflineDrafts() {
  const drafts = readOfflineDrafts();
  const pendingDrafts = drafts.filter((draft) => draft.sync_status !== "synced");
  if (pendingDrafts.length === 0) {
    setStatus("ok", "没有待同步的手机记录");
    renderOfflineDrafts();
    return;
  }

  syncOfflineButton.disabled = true;
  setStatus("busy", `正在同步 ${pendingDrafts.length} 条到电脑`);

  try {
    const payload = await postJson("/api/mobile-sync", {
      deviceName: mobileDeviceName(),
      drafts: pendingDrafts,
    });
    const acceptedIds = new Set((payload.accepted || []).map((item) => item.id));
    const syncedAt = new Date().toISOString();
    const updatedDrafts = drafts.map((draft) => acceptedIds.has(draft.id)
      ? { ...draft, sync_status: "synced", synced_at: syncedAt }
      : draft);
    localStorage.setItem(MOBILE_DRAFTS_KEY, JSON.stringify(updatedDrafts));
    renderOfflineDrafts();
    updateOfflineStatus();
    updateMobileBindingSummary();
    setStatus("ok", `电脑已收到 ${acceptedIds.size} 条，已进入待处理`);
  } catch (error) {
    setStatus("error", `同步失败：${error.message}`);
  } finally {
    syncOfflineButton.disabled = false;
    renderOfflineDrafts();
    updateMobileBindingSummary();
  }
}

function mobileDeviceName() {
  let deviceName = (mobileDeviceNameInput?.value || localStorage.getItem(MOBILE_DEVICE_KEY) || "").trim();
  if (!deviceName) {
    deviceName = `mobile-${Math.random().toString(16).slice(2, 8)}`;
    localStorage.setItem(MOBILE_DEVICE_KEY, deviceName);
  }
  return deviceName;
}

function saveMobileDeviceName() {
  const deviceName = mobileDeviceNameInput.value.trim();
  if (!deviceName) {
    setStatus("error", "请输入这台手机或录入人的名称");
    return;
  }
  localStorage.setItem(MOBILE_DEVICE_KEY, deviceName);
  renderOfflineDrafts();
  setStatus("ok", `已保存手机名称：${deviceName}`);
}

function renderHistory(history) {
  const runs = history.runs || [];
  tableTitle.textContent = history.name ? `《${history.name}》` : "还没有采集结果";
  runCount.textContent = `${runs.length} 次`;
  exportLink.href = history.name ? `/api/export?name=${encodeURIComponent(history.name)}` : "#";
  exportLink.setAttribute("aria-disabled", history.name && runs.length > 0 ? "false" : "true");
  syncUrlInputs(history);

  if (runs.length === 0) {
    cards.innerHTML = `<div class="empty">暂无采集结果</div>`;
    return;
  }

  cards.innerHTML = platformOrder.map((platform) => {
    const row = history.platforms?.[platform] || { values: {} };
    const latestRun = runs[runs.length - 1];
    const latest = row.values?.[latestRun];
    return renderPlatformCard(platform, row, latest, runs);
  }).join("");
}

function renderPlatformCard(platform, row, latest, runs) {
  const label = row.platform_label || platformLabels[platform] || platform;
  const metric = row.metric_label || metricLabels[platform] || "指标值";
  const url = row.url || latest?.url || "";
  const latestHtml = renderLatest(latest);
  const historyRows = runs.slice(-5).reverse().map((run) => {
    const value = row.values?.[run];
    const shown = value?.status === "ok" ? (value.raw || value.number || "") : statusLabel(value?.status);
    return `
      <div class="mini-row">
        <span>${formatTime(run)}</span>
        <strong>${escapeHtml(shown || "未采集")}</strong>
      </div>
    `;
  }).join("");

  return `
    <article class="platform-card">
      <div class="platform-row">
        <div>
          <div class="platform-name">${escapeHtml(label)}</div>
          <div class="metric">${escapeHtml(metric)}</div>
          ${row.metric_description ? `<div class="metric-help">${escapeHtml(row.metric_description)}</div>` : ""}
        </div>
        ${url ? `<a class="open-link" href="${escapeAttribute(url)}" target="_blank" rel="noreferrer">打开</a>` : ""}
      </div>
      ${latestHtml}
      <div class="mini-history">${historyRows}</div>
    </article>
  `;
}

function renderLatest(value) {
  if (!value) return `<div class="latest-value warn">未采集</div>`;

  if (value.status === "ok") {
    const shown = value.raw || value.number || "";
    const meta = value.number && String(value.number) !== String(value.raw) ? `标准化：${value.number}` : "";
    const anomaly = value.anomaly ? `<span class="anomaly-badge">异常</span>` : "";
    const credibility = renderCredibilityBadge(value.credibility);
    return `
      <div class="latest-value">${escapeHtml(shown)}${anomaly}</div>
      ${credibility}
      ${meta ? `<div class="meta">${escapeHtml(meta)}</div>` : ""}
      ${value.credibility?.reason ? `<div class="meta">${escapeHtml(value.credibility.reason)}</div>` : ""}
      ${value.anomaly ? `<div class="meta">${escapeHtml(value.anomaly.message || "")}</div>` : ""}
    `;
  }

  const tone = value.status === "blocked" ? "warn" : "bad";
  return `
    <div class="latest-value ${tone}">${escapeHtml(statusLabel(value.status))}</div>
    ${renderCredibilityBadge(value.credibility)}
    <div class="meta">${escapeHtml(value.error || "")}</div>
  `;
}

function renderCredibilityBadge(credibility) {
  if (!credibility?.label) return "";
  return `<span class="credibility-badge ${escapeAttribute(credibility.level || "")}">${escapeHtml(credibility.label)}</span>`;
}

function syncUrlInputs(history) {
  for (const platform of platformOrder) {
    const input = urlInputs[platform];
    if (!input) continue;
    input.value = history.platforms?.[platform]?.url || "";
  }
  dirtyUrlInputs.clear();
}

function readUrlInputs() {
  return Object.fromEntries(platformOrder
    .filter((platform) => dirtyUrlInputs.has(platform))
    .map((platform) => [
      platform,
      urlInputs[platform]?.value.trim() || "",
    ]));
}

function readAllUrlInputs() {
  return Object.fromEntries(platformOrder.map((platform) => [
    platform,
    urlInputs[platform]?.value.trim() || "",
  ]));
}

function readCollectPlatforms() {
  return [...collectPlatformBox.querySelectorAll("input[type='checkbox']:checked")]
    .map((checkbox) => checkbox.value)
    .filter((platform) => platformOrder.includes(platform));
}

function updateCollectPlatformState() {
  for (const label of collectPlatformBox.querySelectorAll("label")) {
    const checkbox = label.querySelector("input");
    label.classList.toggle("active", checkbox.checked);
  }
}

function clearUrlInputs() {
  for (const input of Object.values(urlInputs)) {
    input.value = "";
  }
  dirtyUrlInputs.clear();
}

async function getJson(url) {
  const response = await fetch(apiUrl(url), { headers: authHeaders() });
  const payload = await response.json();
  if (handleAuthFailure(response, payload)) throw new Error(payload.error || "需要输入访问密码");
  if (!response.ok) throw new Error(payload.error || `HTTP ${response.status}`);
  return payload;
}

async function postJson(url, body) {
  const response = await fetch(apiUrl(url), {
    method: "POST",
    headers: { "content-type": "application/json", ...authHeaders() },
    body: JSON.stringify(body),
  });
  const payload = await response.json();
  if (handleAuthFailure(response, payload)) throw new Error(payload.error || "需要输入访问密码");
  if (!response.ok) throw new Error(payload.error || `HTTP ${response.status}`);
  return payload;
}

async function ensureAccessAuth() {
  try {
    const response = await fetch(apiUrl("/api/auth/status"), { headers: authHeaders() });
    const payload = await response.json();
    if (!payload.enabled || payload.authorized) {
      hideAuthGate();
      return true;
    }
  } catch {
    return true;
  }
  showAuthGate("");
  return false;
}

function authHeaders() {
  const token = localStorage.getItem(HOTNESS_AUTH_TOKEN_KEY) || "";
  return token ? { "x-hotness-auth-token": token } : {};
}

function handleAuthFailure(response, payload) {
  if (response.status !== 401 || !payload?.requires_auth) return false;
  localStorage.removeItem(HOTNESS_AUTH_TOKEN_KEY);
  showAuthGate(payload.error || "需要输入访问密码");
  return true;
}

function showAuthGate(message = "") {
  if (!authGate) return;
  authGate.hidden = false;
  setAuthMessage(message);
  requestAnimationFrame(() => authPassword?.focus());
}

function hideAuthGate() {
  if (authGate) authGate.hidden = true;
  setAuthMessage("");
}

function setAuthMessage(message) {
  if (authMessage) authMessage.textContent = message || "";
}

function setBusy(isBusy, text = "") {
  button.disabled = isBusy;
  if (isBusy) setStatus("busy", text);
}

function setStatus(type, text) {
  statusDot.className = `dot ${type}`;
  statusText.textContent = text;
}

function statusLabel(status) {
  return {
    no_match: "未找到",
    blocked: "被拦截",
    error: "错误",
  }[status] || status || "";
}

function formatTime(value) {
  if (!value) return "";
  const date = new Date(value);
  if (Number.isNaN(date.getTime())) return value;
  return new Intl.DateTimeFormat("zh-CN", {
    month: "2-digit",
    day: "2-digit",
    hour: "2-digit",
    minute: "2-digit",
  }).format(date);
}

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

function escapeAttribute(value) {
  return escapeHtml(value).replace(/`/g, "&#96;");
}