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 runBulkButton = document.querySelector("#run-bulk-button");
const runBulkBar = document.querySelector("#run-bulk-bar");
const runDeleteSelected = document.querySelector("#run-delete-selected");
const runCancelBulk = document.querySelector("#run-cancel-bulk");
const runCollapseToggle = document.querySelector("#run-collapse-toggle");
const runCollapseNote = document.querySelector("#run-collapse-note");
const table = document.querySelector("#hotness-table");
const programList = document.querySelector("#program-list");
const collectHistoryButton = document.querySelector("#collect-history-button");
const retryPendingButton = document.querySelector("#retry-pending-button");
const temporaryFileInput = document.querySelector("#temporary-file-input");
const temporaryQueryText = document.querySelector("#temporary-query-text");
const temporaryQueryButton = document.querySelector("#temporary-query-button");
const temporaryExportButton = document.querySelector("#temporary-export-button");
const temporarySaveLinks = document.querySelector("#temporary-save-links");
const temporaryQueryResult = document.querySelector("#temporary-query-result");
const historyBulkButton = document.querySelector("#history-bulk-button");
const historyBulkBar = document.querySelector("#history-bulk-bar");
const historyCollectSelected = document.querySelector("#history-collect-selected");
const historyDeleteSelected = document.querySelector("#history-delete-selected");
const historyCancelBulk = document.querySelector("#history-cancel-bulk");
const filterBar = document.querySelector(".platform-filters");
const collectPlatformBox = document.querySelector(".collect-platforms");
const collectPlatformAll = document.querySelector("#collect-platform-all");
const aliasInput = document.querySelector("#alias-input");
const saveLibraryButton = document.querySelector("#save-library-button");
const libraryStatus = document.querySelector("#library-status");
const linkCandidates = document.querySelector("#link-candidates");
const trendCharts = document.querySelector("#trend-charts");
const compareList = document.querySelector("#compare-list");
const comparePlatform = document.querySelector("#compare-platform");
const compareRange = document.querySelector("#compare-range");
const compareChart = document.querySelector("#compare-chart");
const compareTable = document.querySelector("#compare-table");
const detailDialog = document.querySelector("#detail-dialog");
const detailTitle = document.querySelector("#detail-title");
const detailBody = document.querySelector("#detail-body");
const dashboardProgramCount = document.querySelector("#dashboard-program-count");
const dashboardLastCapture = document.querySelector("#dashboard-last-capture");
const dashboardPendingCount = document.querySelector("#dashboard-pending-count");
const taskQueuePanel = document.querySelector("#task-queue-panel");
const taskCurrent = document.querySelector("#task-current");
const taskRatio = document.querySelector("#task-ratio");
const taskProgressFill = document.querySelector("#task-progress-fill");
const taskOkCount = document.querySelector("#task-ok-count");
const taskMissingCount = document.querySelector("#task-missing-count");
const taskErrorCount = document.querySelector("#task-error-count");
const mobileSyncList = document.querySelector("#mobile-sync-list");
const dutyAutoRetry = document.querySelector("#duty-auto-retry");
const dutyAutoCollect = document.querySelector("#duty-auto-collect");
const dutyAutoExport = document.querySelector("#duty-auto-export");
const dutyRunTime = document.querySelector("#duty-run-time");
const dutySaveSettings = document.querySelector("#duty-save-settings");
const dutyRunNow = document.querySelector("#duty-run-now");
const dutyStatus = document.querySelector("#duty-status");
const appStatusPort = document.querySelector("#app-status-port");
const appStatusPortDock = document.querySelector("#app-status-port-dock");
const appStatusText = document.querySelector("#app-status-text");
const APP_BUILD_LABEL = "桌面开发版";
const VISIBLE_RECENT_RUNS = 12;
const urlInputs = {
  tencent: document.querySelector("#url-tencent"),
  youku: document.querySelector("#url-youku"),
  iqiyi: document.querySelector("#url-iqiyi"),
  mgtv: document.querySelector("#url-mgtv"),
};

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",
};

let activeName = "";
let activeHistory = null;
let selectedPlatforms = new Set(platformOrder);
let collectPlatforms = new Set(platformOrder);
let dirtyUrlInputs = new Set();
let programsCache = [];
let historyBulkMode = false;
let historyDeleteMode = false;
let selectedHistoryPrograms = new Set();
let runBulkMode = false;
let selectedRuns = new Set();
let showAllRuns = false;
let compareNames = new Set();
let compareHistories = new Map();
let resolveTimer = 0;
let resolveRequestId = 0;
let temporaryQueryItems = [];
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();
  }
  scheduleResolveLinks(name);
});

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}》`);

  const summary = { total: 1, ok: 0, blocked: 0, no_match: 0, no_metric: 0, error: 0 };
  updateTaskQueue({ active: true, current: `正在采集：${name}`, completed: 0, total: 1, summary });

  try {
    const currentUrls = readUrlInputs();
    const missingSelectedUrl = platforms.some((platform) => !currentUrls[platform]);
    if (missingSelectedUrl) await resolveLinks(name);
    const payload = await postJson("/api/collect", { name, urls: readUrlInputs(), platforms });
    countCollection(summary, payload.collection);
    updateTaskQueue({ active: true, current: `已完成：${name}`, completed: 1, total: 1, summary });
    renderHistory(payload.history);
    await refreshPrograms();
    setStatus("ok", `已新增 ${formatTime(payload.collection.captured_at)} 这一列`);
  } catch (error) {
    summary.error += 1;
    updateTaskQueue({ active: true, current: `采集失败：${name}`, completed: 1, total: 1, summary });
    setStatus("error", error.message);
  } finally {
    setBusy(false);
    updateTaskQueue({ active: false, current: "采集任务完成", completed: 1, total: 1, summary });
  }
});

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

collectPlatformAll.addEventListener("click", () => {
  const shouldSelectAll = readCollectPlatforms().length !== platformOrder.length;
  for (const checkbox of collectPlatformBox.querySelectorAll("input[type='checkbox']")) {
    checkbox.checked = shouldSelectAll;
  }
  collectPlatforms = new Set(readCollectPlatforms());
  updateCollectPlatformState();
});

saveLibraryButton.addEventListener("click", async () => {
  const name = input.value.trim() || activeName;
  if (!name) {
    setStatus("error", "请先输入节目名");
    return;
  }

  saveLibraryButton.disabled = true;
  libraryStatus.textContent = "正在保存";
  try {
    const payload = await postJson("/api/link-library", {
      name,
      aliases: aliasInput.value,
      urls: readAllUrlInputs(),
    });
    syncLibraryInputs(payload.entry);
    setStatus("ok", `已保存《${name}》链接库`);
    libraryStatus.textContent = "已保存";
  } catch (error) {
    setStatus("error", error.message);
    libraryStatus.textContent = "保存失败";
  } finally {
    saveLibraryButton.disabled = false;
  }
});


collectHistoryButton.addEventListener("click", async () => {
  const names = programsCache.map((program) => program.name).filter(Boolean);
  if (names.length === 0) {
    setStatus("error", "暂无历史节目可采集");
    return;
  }

  const ok = window.confirm(`确定按当前勾选平台采集全部 ${names.length} 个历史节目吗？`);
  if (!ok) return;
  await collectHistoryPrograms(names);
});

retryPendingButton.addEventListener("click", async () => {
  const platforms = readCollectPlatforms();
  if (platforms.length === 0) {
    setStatus("error", "请至少选择一个复查平台");
    return;
  }

  const ok = window.confirm("确定复查历史里未匹配、无指标、风控或错误的平台吗？\n只会重试这些失败平台，已正常的平台不会重复采集。");
  if (!ok) return;

  setBulkBusy(true);
  setStatus("busy", "正在复查无数据平台");
  try {
    const payload = await postJson("/api/retry-pending", { platforms });
    const summary = { total: payload.items.length, ok: 0, blocked: 0, no_match: 0, no_metric: 0, error: 0 };
    let lastHistory = null;
    for (const item of payload.items) {
      lastHistory = item.history || lastHistory;
      countCollection(summary, item.collection);
    }
    await refreshPrograms();
    if (activeName) {
      await loadHistory(activeName);
    } else if (lastHistory) {
      renderHistory(lastHistory);
    }
    setStatus("ok", pendingRetrySummaryText(summary));
  } catch (error) {
    setStatus("error", error.message);
  } finally {
    setBulkBusy(false);
  }
});

historyCollectSelected.addEventListener("click", async () => {
  const names = [...selectedHistoryPrograms];
  if (names.length === 0) {
    setStatus("error", "请先勾选要采集的历史节目");
    return;
  }

  const ok = window.confirm(`确定按当前勾选平台采集选中的 ${names.length} 个历史节目吗？`);
  if (!ok) return;
  await collectHistoryPrograms(names);
});

temporaryQueryButton.addEventListener("click", async () => {
  const names = temporaryNames();
  const platforms = readCollectPlatforms();
  if (names.length === 0) {
    setStatus("error", "请先粘贴要临时查询的节目名");
    return;
  }
  if (platforms.length === 0) {
    setStatus("error", "请至少选择一个查询平台");
    return;
  }

  temporaryQueryButton.disabled = true;
  temporaryExportButton.disabled = true;
  temporaryQueryResult.classList.add("empty");
  temporaryQueryResult.textContent = `正在临时查询 ${names.length} 个节目`;
  setStatus("busy", `正在临时查询 ${names.length} 个节目`);
  try {
    await runTemporaryQueryProgressively(names, platforms);
    setStatus("ok", `临时查询完成：${temporaryQueryItems.length} 个节目`);
  } catch (error) {
    setStatus("error", error.message);
    temporaryQueryResult.textContent = error.message;
  } finally {
    temporaryQueryButton.disabled = false;
    temporaryExportButton.disabled = temporaryQueryItems.length === 0;
  }
});

temporaryFileInput.addEventListener("change", async () => {
  const file = temporaryFileInput.files?.[0];
  if (!file) return;
  try {
    temporaryQueryText.value = await loadTemporaryImportFile(file);
    setStatus("ok", `已导入 ${file.name}`);
  } catch (error) {
    setStatus("error", `导入失败：${error.message}`);
  } finally {
    temporaryFileInput.value = "";
  }
});

temporaryQueryText.addEventListener("dragover", (event) => {
  event.preventDefault();
  temporaryQueryText.classList.add("drag-over");
});

temporaryQueryText.addEventListener("dragleave", () => {
  temporaryQueryText.classList.remove("drag-over");
});

temporaryQueryText.addEventListener("drop", async (event) => {
  event.preventDefault();
  temporaryQueryText.classList.remove("drag-over");
  const file = event.dataTransfer?.files?.[0];
  const text = event.dataTransfer?.getData("text/plain") || "";
  try {
    temporaryQueryText.value = file
      ? await loadTemporaryImportFile(file)
      : normalizeTemporaryListText(text);
    setStatus("ok", file ? `已导入 ${file.name}` : "已导入拖入文本");
  } catch (error) {
    setStatus("error", `导入失败：${error.message}`);
  }
});

temporaryExportButton.addEventListener("click", () => {
  downloadTemporaryCsv(temporaryQueryItems);
});

historyBulkButton.addEventListener("click", () => {
  if (historyBulkMode || historyDeleteMode || selectedHistoryPrograms.size) {
    clearHistorySelection();
    return;
  }
  historyBulkMode = true;
  selectedHistoryPrograms = new Set(programsCache.map((program) => program.name));
  renderPrograms(programsCache);
});

historyCancelBulk.addEventListener("click", () => {
  clearHistorySelection();
});

historyDeleteSelected.addEventListener("click", async () => {
  if (!historyDeleteMode) {
    historyDeleteMode = true;
    renderPrograms(programsCache);
    return;
  }

  const names = [...selectedHistoryPrograms];
  if (names.length === 0) {
    setStatus("error", "请先勾选要删除的历史节目");
    return;
  }

  const ok = window.confirm(`确定彻底删除选中的 ${names.length} 个历史节目及其全部采集记录吗？`);
  if (!ok) return;
  const deleteLibrary = window.confirm("是否同时删除这些节目的链接库？\n确定：历史和链接库都删除\n取消：只删除历史记录");

  setStatus("busy", `正在删除 ${names.length} 个历史节目`);
  historyDeleteSelected.disabled = true;
  try {
    const payload = await postJson("/api/delete-programs", { names, deleteLibrary });
    for (const name of names) {
      compareNames.delete(name);
      compareHistories.delete(name);
    }
    if (names.includes(activeName)) {
      activeName = "";
      activeHistory = payload.history;
      clearUrlInputs();
      renderHistory(payload.history);
      input.value = "";
    }
    historyBulkMode = false;
    historyDeleteMode = false;
    selectedHistoryPrograms.clear();
    programsCache = payload.programs || [];
    renderPrograms(programsCache);
    renderCompareList(programsCache);
    await renderCompare();
    setStatus("ok", deleteLibrary ? `已删除 ${names.length} 个节目历史和链接库` : `已删除 ${names.length} 个节目历史`);
  } catch (error) {
    setStatus("error", error.message);
  } finally {
    historyDeleteSelected.disabled = false;
  }
});

programList.addEventListener("click", async (event) => {
  const checkbox = event.target.closest("[data-select-program]");
  if (checkbox) {
    const name = checkbox.dataset.selectProgram;
    if (checkbox.checked) selectedHistoryPrograms.add(name);
    else selectedHistoryPrograms.delete(name);
    updateHistoryBulkBar();
    return;
  }

  const deleteButton = event.target.closest("[data-delete-program]");
  if (deleteButton) {
    const name = deleteButton.dataset.deleteProgram;
    if (!name) return;
    const ok = window.confirm(`确定删除《${name}》的全部历史记录吗？`);
    if (!ok) return;
    const deleteLibrary = window.confirm("是否同时删除这个节目的链接库？\n确定：历史和链接库都删除\n取消：只删除历史记录");

    setStatus("busy", `正在删除《${name}》`);
    try {
      const payload = await postJson("/api/delete-program", { name, deleteLibrary });
      if (activeName === name) {
        activeName = "";
        activeHistory = payload.history;
        clearUrlInputs();
        renderHistory(payload.history);
        input.value = "";
      }
      programsCache = payload.programs || [];
      renderPrograms(programsCache);
      renderCompareList(programsCache);
      compareNames.delete(name);
      compareHistories.delete(name);
      await renderCompare();
      setStatus("ok", deleteLibrary ? `已删除《${name}》历史和链接库` : `已删除《${name}》历史`);
    } catch (error) {
      setStatus("error", error.message);
    }
    return;
  }

  const item = event.target.closest("[data-name]");
  if (!item) return;
  activeName = item.dataset.name;
  input.value = activeName;
  await loadHistory(activeName);
});

filterBar.addEventListener("click", (event) => {
  const button = event.target.closest("[data-platform-filter]");
  if (!button) return;

  const platform = button.dataset.platformFilter;
  if (platform === "all") {
    selectedPlatforms = new Set(platformOrder);
  } else if (selectedPlatforms.has(platform)) {
    selectedPlatforms.delete(platform);
  } else {
    selectedPlatforms.add(platform);
  }

  if (selectedPlatforms.size === 0) selectedPlatforms = new Set(platformOrder);
  syncFilterButtons();
  if (activeHistory) renderHistory(activeHistory);
});

table.addEventListener("click", async (event) => {
  const expandButton = event.target.closest("[data-expand-runs]");
  if (expandButton) {
    showAllRuns = true;
    if (activeHistory) renderHistory(activeHistory);
    return;
  }

  const detailButton = event.target.closest("[data-detail-run]");
  if (detailButton) {
    showDetail(detailButton.dataset.detailPlatform, detailButton.dataset.detailRun);
    return;
  }

  const checkbox = event.target.closest("[data-select-run]");
  if (checkbox) {
    const run = checkbox.dataset.selectRun;
    if (checkbox.checked) selectedRuns.add(run);
    else selectedRuns.delete(run);
    updateRunBulkBar();
    return;
  }

  const button = event.target.closest("[data-delete-run]");
  if (!button || !activeHistory?.name) return;

  const run = button.dataset.deleteRun;
  const shownTime = formatTime(run);
  const ok = window.confirm(`确定删除《${activeHistory.name}》在 ${shownTime} 的整列数据吗？`);
  if (!ok) return;

  setStatus("busy", `正在删除 ${shownTime} 这一列`);
  try {
    const payload = await postJson("/api/delete-run", { name: activeHistory.name, run });
    renderHistory(payload.history);
    await refreshPrograms();
    setStatus("ok", `已删除 ${shownTime} 这一列`);
  } catch (error) {
    setStatus("error", error.message);
  }
});

runBulkButton.addEventListener("click", () => {
  if (!activeHistory?.name || (activeHistory.runs || []).length === 0) {
    setStatus("error", "当前节目暂无可删除的时间列");
    return;
  }
  runBulkMode = true;
  selectedRuns.clear();
  renderHistory(activeHistory);
});

runCancelBulk.addEventListener("click", () => {
  runBulkMode = false;
  selectedRuns.clear();
  renderHistory(activeHistory);
});

runCollapseToggle.addEventListener("click", () => {
  showAllRuns = !showAllRuns;
  if (activeHistory) renderHistory(activeHistory);
});

runDeleteSelected.addEventListener("click", async () => {
  const runs = [...selectedRuns];
  if (!activeHistory?.name) return;
  if (runs.length === 0) {
    setStatus("error", "请先勾选要删除的时间列");
    return;
  }

  const ok = window.confirm(`确定删除《${activeHistory.name}》选中的 ${runs.length} 个时间列吗？`);
  if (!ok) return;

  setStatus("busy", `正在删除 ${runs.length} 个时间列`);
  runDeleteSelected.disabled = true;
  try {
    const payload = await postJson("/api/delete-runs", { name: activeHistory.name, runs });
    runBulkMode = false;
    selectedRuns.clear();
    renderHistory(payload.history);
    await refreshPrograms();
    setStatus("ok", `已删除 ${runs.length} 个时间列`);
  } catch (error) {
    setStatus("error", error.message);
  } finally {
    runDeleteSelected.disabled = false;
  }
});

detailDialog.addEventListener("click", async (event) => {
  const button = event.target.closest("[data-use-candidate-url]");
  if (!button) return;

  const platform = button.dataset.useCandidatePlatform;
  const url = button.dataset.useCandidateUrl;
  const input = urlInputs[platform];
  if (!input || !url) return;

  input.value = url;
  dirtyUrlInputs.add(platform);
  detailDialog.close();
  setStatus("ok", `已填入${platformLabels[platform] || platform}链接，可保存链接库或直接重新采集`);
});

linkCandidates.addEventListener("click", (event) => {
  const button = event.target.closest("[data-fill-platform]");
  if (!button) return;

  const platform = button.dataset.fillPlatform;
  const url = button.dataset.fillUrl;
  fillPlatformUrl(platform, url, { manual: true });
  setStatus("ok", `已采用${platformLabels[platform] || platform}候选链接`);
});

compareList.addEventListener("change", async (event) => {
  const checkbox = event.target.closest("[data-compare-name]");
  if (!checkbox) return;

  if (checkbox.checked) compareNames.add(checkbox.dataset.compareName);
  else compareNames.delete(checkbox.dataset.compareName);
  await renderCompare();
});

comparePlatform.addEventListener("change", () => {
  renderCompare();
});

compareRange.addEventListener("change", () => {
  renderCompare();
});

mobileSyncList?.addEventListener("click", (event) => {
  const button = event.target.closest("[data-mobile-sync-name]");
  if (!button) return;
  input.value = button.dataset.mobileSyncName || "";
  activeName = input.value.trim();
  fillMobileSyncUrls(button.dataset.mobileSyncUrls || "{}");
  scheduleResolveLinks(activeName);
  setStatus("ok", `已填入手机同步节目：${activeName}`);
  window.location.hash = "collect-form";
  input.focus();
});

dutySaveSettings?.addEventListener("click", () => {
  saveDutySettings();
});

dutyRunNow?.addEventListener("click", () => {
  runDutyNow();
});

initializeApp();
document.addEventListener("hotness:programs-changed", refreshPrograms);

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

function startApp() {
  if (appStarted) return;
  appStarted = true;
  updateCollectPlatformState();
  renderAppStatusDock();
  refreshPrograms();
  loadMobileSyncDrafts();
  loadDutySettings();
}

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);
    await loadLinkLibrary(name);
    setStatus("ok", `已载入《${name}》`);
  } catch (error) {
    setStatus("error", error.message);
  }
}

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

async function loadMobileSyncDrafts() {
  if (!mobileSyncList) return;
  try {
    const payload = await getJson("/api/mobile-sync");
    renderMobileSyncDrafts(payload.items || []);
  } catch {
    renderMobileSyncDrafts([]);
  }
}

function renderMobileSyncDrafts(items) {
  if (!mobileSyncList) return;
  const pendingItems = (items || []).filter((item) => item.status !== "done");
  if (pendingItems.length === 0) {
    mobileSyncList.classList.add("empty");
    mobileSyncList.textContent = "暂无手机同步记录";
    return;
  }

  mobileSyncList.classList.remove("empty");
  mobileSyncList.innerHTML = pendingItems.slice(0, 30).map((item) => {
    const urls = item.urls || {};
    const urlCount = Object.values(urls).filter(Boolean).length;
    const platformText = (item.platforms || []).map((platform) => platformLabels[platform] || platform).join("、") || "未选平台";
    const note = item.note ? `<div class="mobile-sync-note">${escapeHtml(item.note)}</div>` : "";
    return `
      <article class="mobile-sync-item">
        <div class="mobile-sync-main">
          <strong>${escapeHtml(item.name)}</strong>
          <span>${escapeHtml(item.device_name || "mobile")} · ${formatTime(item.received_at || item.created_at)}</span>
        </div>
        <div class="mobile-sync-meta">${urlCount} 个链接 · ${escapeHtml(platformText)}</div>
        ${note}
        <button class="mini-button" type="button" data-mobile-sync-name="${escapeAttribute(item.name)}" data-mobile-sync-urls="${escapeAttribute(JSON.stringify(urls))}">填入采集栏</button>
      </article>
    `;
  }).join("");
}

function fillMobileSyncUrls(serializedUrls) {
  let urls = {};
  try {
    urls = JSON.parse(serializedUrls);
  } catch {
    urls = {};
  }
  dirtyUrlInputs.clear();
  for (const platform of platformOrder) {
    const value = String(urls?.[platform] || "").trim();
    urlInputs[platform].value = value;
    if (value) dirtyUrlInputs.add(platform);
  }
}

async function loadDutySettings() {
  if (!dutyStatus) return;
  try {
    const payload = await getJson("/api/duty-settings");
    applyDutySettings(payload.settings || {});
    renderDutyStatus(payload.status || null);
  } catch {
    dutyStatus.textContent = "值班设置读取失败";
  }
}

async function saveDutySettings() {
  const settings = readDutySettingsForm();
  dutySaveSettings.disabled = true;
  try {
    const payload = await postJson("/api/duty-settings", { settings });
    applyDutySettings(payload.settings || settings);
    renderDutyStatus(payload.status || null);
    setStatus("ok", "已保存值班设置");
  } catch (error) {
    setStatus("error", error.message);
  } finally {
    dutySaveSettings.disabled = false;
  }
}

async function runDutyNow() {
  dutyRunNow.disabled = true;
  dutyStatus.textContent = "正在执行值班任务";
  try {
    const payload = await postJson("/api/duty-run", { settings: readDutySettingsForm() });
    renderDutyStatus(payload.status || null);
    await refreshPrograms();
    if (activeName) await loadHistory(activeName);
    setStatus("ok", "值班任务执行完成");
  } catch (error) {
    dutyStatus.textContent = `值班执行失败：${error.message}`;
    setStatus("error", error.message);
  } finally {
    dutyRunNow.disabled = false;
  }
}

function readDutySettingsForm() {
  return {
    autoRetry: Boolean(dutyAutoRetry?.checked),
    autoCollect: Boolean(dutyAutoCollect?.checked),
    autoExport: Boolean(dutyAutoExport?.checked),
    runTime: dutyRunTime?.value || "09:30",
  };
}

function applyDutySettings(settings) {
  dutyAutoRetry.checked = Boolean(settings.autoRetry);
  dutyAutoCollect.checked = Boolean(settings.autoCollect);
  dutyAutoExport.checked = Boolean(settings.autoExport);
  dutyRunTime.value = settings.runTime || "09:30";
}

function renderDutyStatus(status) {
  if (!dutyStatus) return;
  if (!status?.last_run_at) {
    dutyStatus.textContent = "尚未执行值班任务";
    return;
  }
  const exportText = status.export_path ? ` · 已导出 ${status.export_path}` : "";
  dutyStatus.textContent = `上次执行 ${formatTime(status.last_run_at)} · 复查 ${status.retry_count || 0} · 采集 ${status.collect_count || 0}${exportText}`;
}

async function loadLinkLibrary(name) {
  try {
    const payload = await getJson(`/api/link-library?name=${encodeURIComponent(name)}`);
    syncLibraryInputs(payload.entry);
  } catch {
    syncLibraryInputs(null);
  }
}

function scheduleResolveLinks(name) {
  window.clearTimeout(resolveTimer);
  const cleanName = String(name || "").trim();
  if (!cleanName) {
    renderLinkCandidates(null);
    return;
  }

  resolveTimer = window.setTimeout(() => {
    resolveLinks(cleanName);
  }, 650);
}

async function resolveLinks(name) {
  const requestId = ++resolveRequestId;
  libraryStatus.textContent = "正在自动搜索链接";
  renderLinkCandidates({ loading: true });

  try {
    const payload = await getJson(`/api/resolve-links?name=${encodeURIComponent(name)}`);
    if (requestId !== resolveRequestId || input.value.trim() !== name) return;

    for (const platform of platformOrder) {
      const result = payload.results?.[platform];
      if (!result?.url) continue;
      fillPlatformUrl(platform, result.url, { manual: false });
    }

    renderLinkCandidates(payload.results || {});
    libraryStatus.textContent = "已自动匹配链接";
  } catch (error) {
    if (requestId !== resolveRequestId) return;
    renderLinkCandidates(null);
    libraryStatus.textContent = "自动搜索失败";
    setStatus("error", error.message);
  }
}

function fillPlatformUrl(platform, url, { manual }) {
  const input = urlInputs[platform];
  if (!input || !url) return;
  if (!manual && dirtyUrlInputs.has(platform)) return;
  input.value = url;
  if (manual) dirtyUrlInputs.add(platform);
}

function renderLinkCandidates(results) {
  if (!linkCandidates) return;
  if (!results) {
    linkCandidates.innerHTML = "";
    return;
  }
  if (results.loading) {
    linkCandidates.innerHTML = "";
    return;
  }

  const matchedPlatforms = platformOrder.filter((platform) => (results[platform]?.candidates || []).length);
  if (matchedPlatforms.length === 0) {
    linkCandidates.innerHTML = "";
    return;
  }

  linkCandidates.innerHTML = matchedPlatforms.map((platform) => {
    const result = results[platform];
    const candidates = result?.candidates || [];
    return `
      <section class="link-candidate-card">
        <div class="link-candidate-head">
          <strong>${escapeHtml(platformLabels[platform] || platform)}</strong>
          <span>${escapeHtml(candidateSourceLabel(result))}</span>
        </div>
        <div class="link-candidate-list">
          ${candidates.slice(0, 4).map((candidate, index) => `
            <button type="button" data-fill-platform="${escapeAttribute(platform)}" data-fill-url="${escapeAttribute(candidate.url)}">
              <span>${index === 0 ? "推荐" : `候选${index + 1}`}</span>
              <small>${escapeHtml(candidate.pageTitle || candidate.url)}</small>
            </button>
          `).join("")}
        </div>
      </section>
    `;
  }).join("");
}

function candidateSourceLabel(result) {
  if (!result?.url) return "未匹配";
  return {
    builtin: "内置",
    library: "链接库",
    history: "历史",
    search: "搜索",
  }[result.source] || "已匹配";
}

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

  programList.innerHTML = programs.map((program) => `
    <div class="program-item-row ${program.name === activeName ? "active" : ""} ${historyBulkMode && !historyDeleteMode ? "bulk" : ""}">
      <label class="program-select"><input data-select-program="${escapeAttribute(program.name)}" type="checkbox" ${selectedHistoryPrograms.has(program.name) ? "checked" : ""} aria-label="选择 ${escapeAttribute(program.name)}"></label>
      <button class="program-item" data-name="${escapeAttribute(program.name)}" type="button" title="${escapeAttribute(program.name)}">
        <span class="program-name-text">${escapeHtml(program.name)}</span>
      </button>
      ${historyDeleteMode ? `<button class="delete-program" data-delete-program="${escapeAttribute(program.name)}" type="button" title="删除这个历史节目">删除</button>` : ""}
    </div>
  `).join("");
  updateHistoryBulkBar();
}

function renderDesktopDashboard() {
  if (!dashboardProgramCount) return;
  dashboardProgramCount.textContent = String(programsCache.length || 0);
  const latest = programsCache.find((program) => program.updated_at)?.updated_at || "";
  dashboardLastCapture.textContent = latest ? formatTime(latest) : "--";
  dashboardPendingCount.textContent = activeHistory ? String(countPendingResults(activeHistory)) : "--";
}

function countPendingResults(history) {
  let count = 0;
  for (const row of Object.values(history?.platforms || {})) {
    for (const value of Object.values(row?.values || {})) {
      if (["blocked", "no_match", "no_metric", "error"].includes(value?.status)) count += 1;
    }
  }
  return count;
}

function updateTaskQueue({ active = false, current = "", completed = 0, total = 0, summary = null } = {}) {
  if (!taskQueuePanel) return;
  const safeTotal = Math.max(0, Number(total) || 0);
  const safeCompleted = Math.min(Math.max(0, Number(completed) || 0), safeTotal);
  const percent = safeTotal ? Math.round((safeCompleted / safeTotal) * 100) : 0;
  taskQueuePanel.classList.toggle("idle", !active && safeCompleted === 0);
  taskCurrent.textContent = current || (active ? "正在准备采集任务" : "暂无运行中的采集任务");
  taskRatio.textContent = `${safeCompleted}/${safeTotal}`;
  taskProgressFill.style.width = `${percent}%`;
  taskOkCount.textContent = String(summary?.ok || 0);
  taskMissingCount.textContent = String((summary?.no_match || 0) + (summary?.no_metric || 0));
  taskErrorCount.textContent = String((summary?.blocked || 0) + (summary?.error || 0));
}

async function collectHistoryPrograms(names) {
  const platforms = readCollectPlatforms();
  if (platforms.length === 0) {
    setStatus("error", "请至少选择一个采集平台");
    return;
  }

  setBulkBusy(true);
  const summary = { total: names.length, ok: 0, blocked: 0, no_match: 0, no_metric: 0, error: 0 };
  let lastHistory = null;
  updateTaskQueue({ active: true, current: "正在准备历史节目采集", completed: 0, total: names.length, summary });

  try {
    for (const [index, name] of names.entries()) {
      updateTaskQueue({ active: true, current: `正在采集：${name}`, completed: index, total: names.length, summary });
      setStatus("busy", `正在采集 ${index + 1}/${names.length}：《${name}》`);
      try {
        const payload = await postJson("/api/collect", { name, urls: {}, platforms });
        lastHistory = payload.history;
        countCollection(summary, payload.collection);
        if (activeName === name) renderHistory(payload.history);
      } catch {
        summary.error += 1;
      }
      updateTaskQueue({ active: true, current: `已完成：${name}`, completed: index + 1, total: names.length, summary });
    }

    await refreshPrograms();
    if (activeName) {
      await loadHistory(activeName);
    } else if (lastHistory) {
      renderHistory(lastHistory);
    }
    setStatus("ok", bulkSummaryText(summary));
  } finally {
    setBulkBusy(false);
    updateTaskQueue({ active: false, current: "采集任务完成", completed: names.length, total: names.length, summary });
  }
}
function setBulkBusy(isBusy) {
  collectHistoryButton.disabled = isBusy;
  retryPendingButton.disabled = isBusy;
  historyBulkButton.disabled = isBusy;
  historyCollectSelected.disabled = isBusy;
  historyDeleteSelected.disabled = isBusy;
  runBulkButton.disabled = isBusy;
  button.disabled = isBusy;
}

function updateRunBulkBar() {
  if (!runBulkBar) return;
  const hasRuns = Boolean(activeHistory?.name && (activeHistory.runs || []).length);
  runBulkButton.hidden = runBulkMode || !hasRuns;
  runBulkBar.hidden = !runBulkMode;
  runDeleteSelected.textContent = selectedRuns.size ? `删除选中列(${selectedRuns.size})` : "删除选中列";
}

function updateHistoryBulkBar() {
  if (!historyBulkBar) return;
  historyBulkMode = selectedHistoryPrograms.size > 0 || historyDeleteMode;
  historyBulkBar.hidden = !historyBulkMode;
  historyBulkButton.hidden = false;
  historyBulkButton.textContent = historyBulkMode ? "取消选择" : "批量选择";
  historyCollectSelected.textContent = selectedHistoryPrograms.size ? `采集选中(${selectedHistoryPrograms.size})` : "采集选中";
  historyDeleteSelected.textContent = historyDeleteMode
    ? (selectedHistoryPrograms.size ? `确认删除(${selectedHistoryPrograms.size})` : "确认删除")
    : (selectedHistoryPrograms.size ? `删除选中(${selectedHistoryPrograms.size})` : "删除选中");
}

function clearHistorySelection() {
  historyBulkMode = false;
  historyDeleteMode = false;
  selectedHistoryPrograms.clear();
  renderPrograms(programsCache);
}

function countCollection(summary, collection) {
  const results = collection?.results || [];
  if (results.some((result) => result.status === "ok")) summary.ok += 1;
  for (const result of results) {
    if (result.status === "blocked") summary.blocked += 1;
    else if (result.status === "no_match") summary.no_match += 1;
    else if (result.status === "no_metric") summary.no_metric += 1;
    else if (result.status === "error") summary.error += 1;
  }
}

function bulkSummaryText(summary) {
  const issues = [
    summary.blocked ? `风控 ${summary.blocked}` : "",
    summary.no_match ? `未匹配 ${summary.no_match}` : "",
    summary.no_metric ? `无指标 ${summary.no_metric}` : "",
    summary.error ? `错误 ${summary.error}` : "",
  ].filter(Boolean).join("，");
  return `历史节目采集完成：${summary.ok}/${summary.total} 个节目有有效数据${issues ? `；${issues}` : ""}`;
}

function pendingRetrySummaryText(summary) {
  if (summary.total === 0) return "没有需要复查的无数据平台";
  const issues = [
    summary.blocked ? `仍被风控 ${summary.blocked}` : "",
    summary.no_match ? `仍未匹配 ${summary.no_match}` : "",
    summary.no_metric ? `仍无指标 ${summary.no_metric}` : "",
    summary.error ? `错误 ${summary.error}` : "",
  ].filter(Boolean).join("，");
  return `复查完成：${summary.ok}/${summary.total} 个节目恢复有效数据${issues ? `；${issues}` : ""}`;
}

function temporaryNames() {
  return [...new Set(normalizeTemporaryListText(temporaryQueryText.value)
    .split(/[\r\n]+/)
    .map((name) => name.trim())
    .filter(Boolean))];
}

async function runTemporaryQueryProgressively(names, platforms) {
  temporaryQueryItems = names.map((name) => ({
    name,
    collection: {
      name,
      captured_at: new Date().toISOString(),
      results: [],
    },
  }));
  renderTemporaryResults(temporaryQueryItems);

  const tasks = temporaryQueryTasks(names, platforms);
  const summary = { total: tasks.length, ok: 0, blocked: 0, no_match: 0, no_metric: 0, error: 0 };
  let completed = 0;
  updateTaskQueue({ active: true, current: "正在准备临时查询", completed, total: tasks.length, summary });
  await clientMapLimit(tasks, 6, async (task) => {
    let payload = null;
    updateTaskQueue({ active: true, current: `临时查询：${task.name} / ${platformLabels[task.platform] || task.platform}`, completed, total: tasks.length, summary });
    try {
      payload = await postJson("/api/query-once", {
        names: [task.name],
        platforms: [task.platform],
        saveLinks: temporarySaveLinks.checked,
      });
      mergeTemporaryQueryResult(task.name, payload.items?.[0], task.platform);
    } catch (error) {
      mergeTemporaryQueryResult(task.name, {
        collection: {
          captured_at: new Date().toISOString(),
          results: [temporaryPlatformError(task, error)],
        },
      }, task.platform);
    } finally {
      completed += 1;
      Object.assign(summary, summarizeTemporaryTaskQueue());
      renderTemporaryResults(temporaryQueryItems);
      temporaryExportButton.disabled = temporaryRows(temporaryQueryItems).length === 0;
      updateTaskQueue({ active: true, current: `临时查询进度 ${completed}/${tasks.length}`, completed, total: tasks.length, summary });
      setStatus("busy", `临时查询进度 ${completed}/${tasks.length}`);
    }
  });
  updateTaskQueue({ active: false, current: "临时查询完成", completed, total: tasks.length, summary });
}

function temporaryQueryTasks(names, platforms) {
  return names.flatMap((name) => platforms.map((platform) => ({ name, platform })));
}

function summarizeTemporaryTaskQueue() {
  const summary = { ok: 0, blocked: 0, no_match: 0, no_metric: 0, error: 0 };
  for (const item of temporaryQueryItems) {
    for (const result of item.collection?.results || []) {
      if (result.status === "ok") summary.ok += 1;
      else if (result.status === "blocked") summary.blocked += 1;
      else if (result.status === "no_match") summary.no_match += 1;
      else if (result.status === "no_metric") summary.no_metric += 1;
      else if (result.status === "error") summary.error += 1;
    }
  }
  return summary;
}

function mergeTemporaryQueryResult(name, item, platform) {
  const target = temporaryQueryItems.find((entry) => entry.name === name);
  if (!target) return;
  const incoming = item?.collection?.results?.[0] || temporaryPlatformError({ name, platform }, new Error("没有返回结果"));
  const results = (target.collection.results || []).filter((result) => result.platform !== platform);
  target.collection = {
    ...target.collection,
    captured_at: item?.collection?.captured_at || target.collection.captured_at,
    results: [...results, incoming].sort((left, right) =>
      platformOrder.indexOf(left.platform) - platformOrder.indexOf(right.platform),
    ),
  };
}

function temporaryPlatformError(task, error) {
  return {
    platform: task.platform,
    platform_label: platformLabels[task.platform] || task.platform,
    metric_label: metricLabels[task.platform] || "",
    name: task.name,
    url: "",
    page_title: "",
    hotness_raw: "",
    hotness_number: "",
    unit: "",
    confidence: "",
    evidence: "",
    status: "error",
    fetched_at: new Date().toISOString(),
    error: error?.message || "query failed",
  };
}

async function clientMapLimit(items, limit, worker) {
  let nextIndex = 0;
  const workers = Array.from({ length: Math.min(limit, items.length) }, async () => {
    while (nextIndex < items.length) {
      const index = nextIndex;
      nextIndex += 1;
      await worker(items[index], index);
    }
  });
  await Promise.all(workers);
}

async function loadTemporaryImportFile(file) {
  if (!file) return "";
  const name = String(file.name || "").toLowerCase();
  const type = String(file.type || "").toLowerCase();
  if (type.startsWith("image/")) {
    const payload = await postJson("/api/temporary-ocr", {
      filename: file.name,
      type: file.type,
      data: await readFileAsDataUrl(file),
    });
    return normalizeTemporaryListText(payload.text || "");
  }
  if (name.endsWith(".xlsx") || type.includes("spreadsheetml")) {
    return normalizeTemporaryListText(await extractXlsxText(await file.arrayBuffer()));
  }
  return normalizeTemporaryListText(await file.text());
}

function readFileAsDataUrl(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = () => resolve(String(reader.result || ""));
    reader.onerror = () => reject(new Error("读取截图失败"));
    reader.readAsDataURL(file);
  });
}

function normalizeTemporaryListText(text) {
  const seen = new Set();
  const names = [];
  for (const line of String(text || "").split(/[\r\n]+/)) {
    const cells = splitTemporaryListLine(line);
    const value = (cells.find((cell) => cell.trim()) || "").trim();
    if (!value || isTemporaryListHeader(value) || seen.has(value)) continue;
    seen.add(value);
    names.push(value);
  }
  return names.join("\n");
}

function splitTemporaryListLine(line) {
  const text = String(line || "").trim();
  if (text.includes("\t")) return text.split("\t");
  if (!text.includes(",")) return [text];

  const cells = [];
  let current = "";
  let quoted = false;
  for (let index = 0; index < text.length; index += 1) {
    const char = text[index];
    if (char === "\"") {
      if (quoted && text[index + 1] === "\"") {
        current += "\"";
        index += 1;
      } else {
        quoted = !quoted;
      }
    } else if (char === "," && !quoted) {
      cells.push(current);
      current = "";
    } else {
      current += char;
    }
  }
  cells.push(current);
  return cells;
}

function isTemporaryListHeader(value) {
  return new Set(["节目", "节目名", "节目名称", "片名", "名称", "name", "program", "title"]).has(
    String(value || "").trim().toLowerCase(),
  );
}

async function extractXlsxText(arrayBuffer) {
  const entries = await unzipXlsxEntries(arrayBuffer);
  const sharedStrings = parseSharedStrings(entries.get("xl/sharedStrings.xml") || "");
  const worksheetName = [...entries.keys()].find((name) => /^xl\/worksheets\/sheet\d+\.xml$/i.test(name));
  if (!worksheetName) throw new Error("没有在 Excel 中找到工作表");
  const names = parseWorksheetNames(entries.get(worksheetName), sharedStrings);
  if (names.length === 0) throw new Error("没有在 Excel 第一列找到节目名");
  return names.join("\n");
}

async function unzipXlsxEntries(arrayBuffer) {
  const bytes = new Uint8Array(arrayBuffer);
  const view = new DataView(arrayBuffer);
  const decoder = new TextDecoder("utf-8");
  const eocdOffset = findZipEndOfCentralDirectory(view);
  if (eocdOffset < 0) throw new Error("无法识别 Excel 文件");

  const entryCount = view.getUint16(eocdOffset + 10, true);
  let offset = view.getUint32(eocdOffset + 16, true);
  const entries = new Map();

  for (let index = 0; index < entryCount; index += 1) {
    if (view.getUint32(offset, true) !== 0x02014b50) throw new Error("Excel 文件结构异常");
    const method = view.getUint16(offset + 10, true);
    const compressedSize = view.getUint32(offset + 20, true);
    const nameLength = view.getUint16(offset + 28, true);
    const extraLength = view.getUint16(offset + 30, true);
    const commentLength = view.getUint16(offset + 32, true);
    const localOffset = view.getUint32(offset + 42, true);
    const path = decoder.decode(bytes.slice(offset + 46, offset + 46 + nameLength));
    const content = await readZipEntry(bytes, view, localOffset, compressedSize, method, decoder);
    entries.set(path, content);
    offset += 46 + nameLength + extraLength + commentLength;
  }

  return entries;
}

function findZipEndOfCentralDirectory(view) {
  for (let offset = view.byteLength - 22; offset >= 0; offset -= 1) {
    if (view.getUint32(offset, true) === 0x06054b50) return offset;
  }
  return -1;
}

async function readZipEntry(bytes, view, offset, compressedSize, method, decoder) {
  if (view.getUint32(offset, true) !== 0x04034b50) throw new Error("Excel 文件内容异常");
  const nameLength = view.getUint16(offset + 26, true);
  const extraLength = view.getUint16(offset + 28, true);
  const start = offset + 30 + nameLength + extraLength;
  const compressed = bytes.slice(start, start + compressedSize);
  if (method === 0) return decoder.decode(compressed);
  if (method !== 8) throw new Error("暂不支持这个 Excel 压缩格式");
  if (typeof DecompressionStream !== "function") {
    throw new Error("当前浏览器不支持直接读取 xlsx，请另存为 CSV 后导入。");
  }
  const stream = new Blob([compressed]).stream().pipeThrough(new DecompressionStream("deflate-raw"));
  return decoder.decode(await new Response(stream).arrayBuffer());
}

function parseSharedStrings(xml) {
  if (!xml) return [];
  const doc = new DOMParser().parseFromString(xml, "application/xml");
  return [...doc.getElementsByTagName("si")].map((item) =>
    [...item.getElementsByTagName("t")].map((node) => node.textContent || "").join("").trim(),
  );
}

function parseWorksheetNames(xml, sharedStrings) {
  const doc = new DOMParser().parseFromString(xml || "", "application/xml");
  const names = [];
  for (const row of doc.getElementsByTagName("row")) {
    const cells = [...row.getElementsByTagName("c")].map((cell) => worksheetCellText(cell, sharedStrings));
    const value = (cells.find(Boolean) || "").trim();
    if (value && !isTemporaryListHeader(value)) names.push(value);
  }
  return [...new Set(names)];
}

function worksheetCellText(cell, sharedStrings) {
  const type = cell.getAttribute("t");
  if (type === "inlineStr") {
    return [...cell.getElementsByTagName("t")].map((node) => node.textContent || "").join("").trim();
  }
  const value = cell.getElementsByTagName("v")[0]?.textContent?.trim() || "";
  if (type === "s") return sharedStrings[Number(value)] || "";
  return value;
}

function renderTemporaryResults(items) {
  const rows = temporaryRows(items);
  if (rows.length === 0) {
    temporaryQueryResult.classList.add("empty");
    temporaryQueryResult.textContent = "暂无临时查询结果";
    return;
  }

  temporaryQueryResult.classList.remove("empty");
  temporaryQueryResult.innerHTML = `
    <div class="temporary-result-wrap">
      <table class="temporary-table">
        <thead>
          <tr>
            <th>节目</th>
            <th>平台</th>
            <th>指标</th>
            <th>数值</th>
            <th>状态</th>
            <th>节目页</th>
          </tr>
        </thead>
        <tbody>
          ${rows.map((row) => `
            <tr>
              <td>${escapeHtml(row.name)}</td>
              <td>${escapeHtml(row.platform_label)}</td>
              <td>${escapeHtml(row.metric_label)}</td>
              <td>${escapeHtml(row.value)}</td>
              <td>${escapeHtml(row.status_label)}</td>
              <td>${row.url ? `<a href="${escapeAttribute(row.url)}" target="_blank" rel="noreferrer">打开</a>` : ""}</td>
            </tr>
          `).join("")}
        </tbody>
      </table>
    </div>
  `;
}

function temporaryRows(items) {
  return (items || []).flatMap((item) => (item.collection?.results || []).map((result) => ({
    name: item.name || result.name || "",
    platform: result.platform || "",
    platform_label: result.platform_label || platformLabels[result.platform] || result.platform || "",
    metric_label: result.metric_label || metricLabels[result.platform] || "",
    value: result.status === "ok" ? (result.hotness_raw || result.hotness_number || "") : "",
    hotness_raw: result.hotness_raw || "",
    hotness_number: result.hotness_number || "",
    unit: result.unit || "",
    status: result.status || "",
    status_label: statusLabel(result.status),
    confidence: result.confidence || "",
    credibility: result.credibility?.label || "",
    page_title: result.page_title || "",
    evidence: result.evidence || "",
    error: result.error || "",
    url: result.url || "",
    fetched_at: result.fetched_at || item.collection?.captured_at || "",
  })));
}

function downloadTemporaryCsv(items) {
  const rows = temporaryRows(items);
  if (rows.length === 0) return;
  const headers = [
    "节目",
    "平台",
    "指标",
    "数值",
    "状态",
    "可信度",
    "节目页",
    "页面标题",
    "采集时间",
    "错误",
    "证据",
  ];
  const csv = [
    headers,
    ...rows.map((row) => [
      row.name,
      row.platform_label,
      row.metric_label,
      row.value,
      row.status_label,
      row.credibility,
      row.url,
      row.page_title,
      row.fetched_at,
      row.error,
      row.evidence,
    ]),
  ].map((row) => row.map(csvEscape).join(",")).join("\n");

  const blob = new Blob([`\ufeff${csv}\n`], { type: "text/csv;charset=utf-8" });
  const url = URL.createObjectURL(blob);
  const link = document.createElement("a");
  link.href = url;
  link.download = `临时查询-${new Date().toISOString().slice(0, 10)}.csv`;
  document.body.appendChild(link);
  link.click();
  link.remove();
  URL.revokeObjectURL(url);
}

function csvEscape(value) {
  const text = String(value ?? "");
  if (/[",\r\n]/.test(text)) return `"${text.replace(/"/g, "\"\"")}"`;
  return text;
}

function renderHistory(history) {
  activeHistory = history;
  renderDesktopDashboard();
  const runs = history.runs || [];
  const visibleRuns = visibleRunsForTable(runs);
  const collapsedCount = hiddenRunCount(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);
  updateRunCollapseControls(runs);
  updateRunBulkBar();

  if (runs.length === 0) {
    runBulkMode = false;
    selectedRuns.clear();
    updateRunBulkBar();
    table.querySelector("thead").innerHTML = "";
    table.querySelector("tbody").innerHTML = `<tr><td class="empty" colspan="4">暂无采集结果</td></tr>`;
    renderTrendCharts(history);
    return;
  }

  table.querySelector("thead").innerHTML = `
    <tr>
      <th>平台</th>
      <th>指标口径</th>
      <th>节目页</th>
      ${collapsedCount > 0 ? `<th class="run-collapse-cell">${collapsedCount} 个旧列已隐藏</th>` : ""}
      ${visibleRuns.map((run) => `
        <th>
          <span class="run-head">
            ${runBulkMode ? `<label class="run-select"><input data-select-run="${escapeAttribute(run)}" type="checkbox" ${selectedRuns.has(run) ? "checked" : ""} aria-label="选择 ${formatTime(run)}"></label>` : ""}
            <span>${formatTime(run)}</span>
            ${runBulkMode ? "" : `<button class="delete-run" type="button" data-delete-run="${escapeAttribute(run)}">删除</button>`}
          </span>
        </th>
      `).join("")}
    </tr>
  `;

  table.querySelector("tbody").innerHTML = platformOrder.filter((platform) => selectedPlatforms.has(platform)).map((platform) => {
    const row = history.platforms?.[platform] || { values: {} };
    return `
      <tr>
        <td>${escapeHtml(row.platform_label || platformLabels[platform] || platform)}</td>
        <td>${renderMetricCell(row, platform)}</td>
        <td class="url-cell">${renderUrl(row.url)}</td>
        ${collapsedCount > 0 ? `<td class="run-collapse-cell"><button type="button" data-expand-runs>展开旧列</button></td>` : ""}
        ${visibleRuns.map((run) => renderValueCell(row.values?.[run], platform, run)).join("")}
      </tr>
    `;
  }).join("");
  renderTrendCharts(history);
}

function visibleRunsForTable(runs) {
  if (showAllRuns || runBulkMode) return runs;
  if (runs.length <= VISIBLE_RECENT_RUNS) return runs;
  return runs.slice(-VISIBLE_RECENT_RUNS);
}

function hiddenRunCount(runs) {
  if (showAllRuns || runBulkMode) return 0;
  return Math.max(0, runs.length - VISIBLE_RECENT_RUNS);
}

function updateRunCollapseControls(runs) {
  const hiddenCount = Math.max(0, runs.length - VISIBLE_RECENT_RUNS);
  if (hiddenCount === 0 || runBulkMode) {
    runCollapseToggle.hidden = true;
    runCollapseNote.textContent = "";
    return;
  }

  runCollapseToggle.hidden = false;
  runCollapseToggle.textContent = showAllRuns ? "收起旧列" : "展开旧列";
  runCollapseNote.textContent = showAllRuns
    ? `已展开全部 ${runs.length} 次`
    : `默认显示最近 ${VISIBLE_RECENT_RUNS} 次，隐藏 ${hiddenCount} 个旧列`;
}

function syncFilterButtons() {
  for (const button of filterBar.querySelectorAll("[data-platform-filter]")) {
    const platform = button.dataset.platformFilter;
    const active = platform === "all"
      ? selectedPlatforms.size === platformOrder.length
      : selectedPlatforms.has(platform);
    button.classList.toggle("active", active);
  }
}

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

function syncLibraryInputs(entry) {
  aliasInput.value = (entry?.aliases || []).join("，");
  libraryStatus.textContent = entry?.source === "library"
    ? "已载入链接库"
    : (entry?.source === "builtin" ? "已载入内置链接" : "");

  for (const platform of platformOrder) {
    const input = urlInputs[platform];
    if (!input || input.value.trim()) continue;
    input.value = entry?.urls?.[platform] || "";
  }
  dirtyUrlInputs.clear();
}

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

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() {
  const selected = readCollectPlatforms();
  collectPlatformAll.textContent = selected.length === platformOrder.length ? "取消全选" : "全选";
  collectPlatformAll.classList.toggle("warn", selected.length === 0);
  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 = "";
  }
  aliasInput.value = "";
  libraryStatus.textContent = "";
  renderLinkCandidates(null);
  dirtyUrlInputs.clear();
}

function renderMetricCell(row, platform) {
  const label = row.metric_label || metricLabels[platform] || "指标值";
  const description = row.metric_description || "";
  return `
    <span class="compact-label" title="${escapeAttribute(description || label)}">${escapeHtml(shortMetricLabel(label))}</span>
  `;
}

function shortMetricLabel(label) {
  if (label.includes("播放")) return "播放数";
  if (label.includes("内容")) return "内容热";
  if (label.includes("热度")) return "热度值";
  return label.length > 5 ? `${label.slice(0, 5)}...` : label;
}

function renderValueCellLegacy(value, platform, run) {
  if (!value) return `<td class="heat-cell"><span class="short-status muted" title="本次未选择该平台，或历史中没有这一列数据">未采集</span></td>`;

  const detailTitle = [value.page_title, value.evidence].filter(Boolean).join("\n");
  const anomalyBadge = value.anomaly ? `<span class="anomaly-badge">异常</span>` : "";
  const credibilityBadge = renderCredibilityBadge(value.credibility);
  const detailButton = `<button class="detail-link" type="button" data-detail-platform="${escapeAttribute(platform)}" data-detail-run="${escapeAttribute(run)}">详情</button>`;
  if (value.status === "ok") {
    const shown = value.raw || value.number || "";
    const meta = value.number && String(value.number) !== String(value.raw) ? value.number : "ok";
    return `
      <td class="heat-cell" title="${escapeAttribute(detailTitle)}">
        <span class="heat-value status-ok">${escapeHtml(shown)} ${anomalyBadge}</span>
        ${credibilityBadge}
        ${detailButton}
      </td>
    `;
  }

  const tone = value.status === "blocked" ? "status-warn" : "status-bad";
  const statusText = {
    no_match: "未找到",
    no_metric: "无指标",
    blocked: "被拦截",
    error: "抓取错",
  }[value.status] || value.status || "error";
  const fullReason = [
    value.page_title ? `页面标题：${value.page_title}` : "",
    value.credibility?.reason ? `可信度：${value.credibility.reason}` : "",
    value.error ? `错误：${value.error}` : "",
  ].filter(Boolean).join("\n");
  return `
    <td class="heat-cell" title="${escapeAttribute(fullReason || value.status || "")}">
      <span class="short-status ${tone}">${escapeHtml(statusText)}</span>
      ${credibilityBadge}
      ${detailButton}
    </td>
  `;
}

function renderValueCell(value, platform, run) {
  const display = compactValueDisplay(value);
  return `
    <td class="heat-cell" title="${escapeAttribute(display.reason)}">
      <span class="${escapeAttribute(display.className)}" title="${escapeAttribute(display.reason)}">${escapeHtml(display.text)}</span>
    </td>
  `;
}

function compactValueDisplay(value) {
  if (!value) {
    return {
      text: "无",
      className: "short-status muted",
      reason: "本次未选择该平台，或历史中没有这一列数据",
    };
  }

  const reason = valueTooltip(value);
  if (value.status === "ok") {
    const shown = value.raw || value.number || "";
    return {
      text: shown ? String(shown) : "无",
      className: shown ? "heat-value status-ok" : "short-status muted",
      reason,
    };
  }

  return {
    text: "无",
    className: `short-status ${value.status === "blocked" ? "status-warn" : "status-bad"}`,
    reason,
  };
}

function valueTooltip(value) {
  return [
    value.status ? `状态：${statusLabel(value.status)}` : "",
    value.page_title ? `页面标题：${value.page_title}` : "",
    value.credibility?.label ? `可信度：${value.credibility.label}` : "",
    value.credibility?.reason ? `说明：${value.credibility.reason}` : "",
    value.error ? `错误：${value.error}` : "",
    value.anomaly?.message ? `异常：${value.anomaly.message}` : "",
    value.evidence ? `证据：${value.evidence}` : "",
  ].filter(Boolean).join("\n") || "无可用数据";
}

function statusLabel(status) {
  return {
    ok: "已抓取",
    no_match: "未找到",
    no_metric: "无指标",
    blocked: "被拒绝",
    error: "抓取错误",
  }[status] || status || "未知";
}

function renderUrl(url) {
  if (!url) return `<span>未匹配</span>`;
  return `<a href="${escapeAttribute(url)}" target="_blank" rel="noreferrer">打开节目页</a>`;
}

function showDetail(platform, run) {
  const row = activeHistory?.platforms?.[platform];
  const value = row?.values?.[run];
  if (!value) return;

  detailTitle.textContent = `${row.platform_label || platformLabels[platform] || platform} · ${formatTime(run)}`;
  const candidates = value.search_candidates || [];
  detailBody.innerHTML = `
    ${detailLine("状态", value.status || "")}
    ${detailLine("指标", row.metric_label || metricLabels[platform] || "")}
    ${detailLine("指标口径", row.metric_description || "")}
    ${detailLine("可信度", value.credibility?.label || "")}
    ${detailLine("可信度说明", value.credibility?.reason || "")}
    ${detailLine("数值", value.raw || value.number || "")}
    ${detailLine("页面标题", value.page_title || "")}
    ${detailLine("节目页", value.url || row.url || "", true)}
    ${detailLine("搜索页", value.search_url || "", true)}
    ${detailLine("证据", value.evidence || "")}
    ${value.anomaly ? detailLine("异常提示", value.anomaly.message || "") : ""}
    ${detailLine("错误", value.error || "")}
    ${candidates.length ? `
      <div class="detail-block">
        <div class="detail-label">搜索候选</div>
        <ol class="candidate-list">
          ${candidates.slice(0, 5).map((candidate) => `
            <li>
              <div class="candidate-actions">
                <a href="${escapeAttribute(candidate.url)}" target="_blank" rel="noreferrer">${escapeHtml(candidate.pageTitle || candidate.url)}</a>
                <button type="button" data-use-candidate-platform="${escapeAttribute(platform)}" data-use-candidate-url="${escapeAttribute(candidate.url)}">使用这个链接</button>
              </div>
              <span>${escapeHtml(candidate.evidence || "")}</span>
            </li>
          `).join("")}
        </ol>
      </div>
    ` : ""}
  `;
  detailDialog.showModal();
}

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

function shortCredibilityLabel(label) {
  return {
    "高可信": "高信",
    "中可信": "中信",
    "低可信": "低信",
    "已确认节目页": "确认",
    "拒绝": "拒绝",
  }[label] || label;
}

function detailLine(label, value, asLink = false) {
  if (!value) return "";
  const content = asLink
    ? `<a href="${escapeAttribute(value)}" target="_blank" rel="noreferrer">${escapeHtml(value)}</a>`
    : escapeHtml(value);
  return `
    <div class="detail-block">
      <div class="detail-label">${escapeHtml(label)}</div>
      <div class="detail-value">${content}</div>
    </div>
  `;
}

function renderTrendCharts(history) {
  const runs = history?.runs || [];
  if (!history?.name || runs.length === 0) {
    trendCharts.innerHTML = `<div class="empty">暂无趋势</div>`;
    return;
  }

  trendCharts.innerHTML = platformOrder
    .filter((platform) => selectedPlatforms.has(platform))
    .map((platform) => renderPlatformTrend(platform, history.platforms?.[platform], runs))
    .join("");
}

function renderPlatformTrend(platform, row, runs) {
  const points = runs.map((run, index) => {
    const value = row?.values?.[run];
    const number = value?.status === "ok" ? Number(value.number) : NaN;
    return Number.isFinite(number) ? { index, run, number, raw: value.raw || String(number) } : null;
  }).filter(Boolean);

  if (points.length === 0) {
    return `
      <article class="trend-card">
        <div class="trend-title">${escapeHtml(row?.platform_label || platformLabels[platform] || platform)}</div>
        <div class="empty">暂无有效数据</div>
      </article>
    `;
  }

  return `
    <article class="trend-card">
      <div class="trend-title">${escapeHtml(row?.platform_label || platformLabels[platform] || platform)}</div>
      ${lineSvg(points)}
      <div class="trend-meta">最新：${escapeHtml(points[points.length - 1].raw)}</div>
    </article>
  `;
}

function lineSvg(points) {
  const width = 320;
  const height = 120;
  const pad = 18;
  const min = Math.min(...points.map((point) => point.number));
  const max = Math.max(...points.map((point) => point.number));
  const span = max - min || 1;
  const lastIndex = Math.max(...points.map((point) => point.index), 1);
  const coordinates = points.map((point) => {
    const x = pad + (point.index / lastIndex) * (width - pad * 2);
    const y = height - pad - ((point.number - min) / span) * (height - pad * 2);
    return `${round(x)},${round(y)}`;
  }).join(" ");

  return `
    <svg class="line-chart" viewBox="0 0 ${width} ${height}" role="img" aria-label="趋势图">
      <line x1="${pad}" y1="${height - pad}" x2="${width - pad}" y2="${height - pad}" />
      <polyline points="${coordinates}" />
      ${points.map((point) => {
        const [x, y] = coordinates.split(" ")[points.indexOf(point)].split(",");
        return `<circle cx="${x}" cy="${y}" r="3"><title>${escapeHtml(formatTime(point.run))} ${escapeHtml(point.raw)}</title></circle>`;
      }).join("")}
    </svg>
  `;
}

function renderCompareList(programs) {
  if (!compareList) return;
  compareList.innerHTML = programs.length
    ? programs.map((program) => `
      <label class="compare-check">
        <input type="checkbox" data-compare-name="${escapeAttribute(program.name)}" ${compareNames.has(program.name) ? "checked" : ""}>
        <span>${escapeHtml(program.name)}</span>
      </label>
    `).join("")
    : `<div class="empty">暂无历史节目</div>`;
}

async function renderCompare() {
  try {
    const names = [...compareNames];
    if (names.length === 0) {
      compareChart.className = "compare-chart empty";
      compareChart.textContent = "选择节目后显示对比";
      compareTable.innerHTML = "";
      return;
    }

    for (const name of names) {
      if (compareHistories.has(name)) continue;
      const payload = await getJson(`/api/history?name=${encodeURIComponent(name)}`);
      compareHistories.set(name, payload.history);
    }

    const platform = comparePlatform.value;
    const range = compareRange.value;
    const histories = names.map((name) => compareHistories.get(name)).filter(Boolean);
    const sourceSeries = histories.map((history) => comparePlatformSeries(history, platform)).filter((item) => item.points.length);
    const series = filterCompareSeriesByRange(sourceSeries, range).filter((item) => item.points.length);
    compareChart.className = "compare-chart compare-line-chart";
    compareChart.innerHTML = renderCompareLineChart(series);
    compareTable.innerHTML = "";
  } catch (error) {
    setStatus("error", error.message);
  }
}

function latestPlatformValue(history, platform) {
  const row = history?.platforms?.[platform];
  const runs = [...(history?.runs || [])].reverse();
  const latestRun = runs.find((run) => row?.values?.[run]);
  const value = latestRun ? row.values[latestRun] : null;
  return {
    name: history?.name || "",
    run: latestRun || "",
    status: value?.status || "未采集",
    raw: value?.status === "ok" ? (value.raw || value.number || "") : "",
    number: value?.status === "ok" ? Number(value.number) : NaN,
  };
}

function filterCompareSeriesByRange(series, range) {
  if (range === "all") return series;
  const allPoints = series.flatMap((item) => item.points).filter((point) => Number.isFinite(point.time));
  if (allPoints.length === 0) return series;
  const latestTime = Math.max(...allPoints.map((point) => point.time));
  const cutoff = compareRangeCutoff(latestTime, range);
  return series.map((item) => ({
    ...item,
    points: item.points.filter((point) => point.time >= cutoff && point.time <= latestTime),
  }));
}

function compareRangeCutoff(latestTime, range) {
  if (range === "today") {
    const start = new Date(latestTime);
    start.setHours(0, 0, 0, 0);
    return start.getTime();
  }
  const days = range === "3d" ? 3 : 7;
  return latestTime - days * 24 * 60 * 60 * 1000;
}

function comparePlatformSeries(history, platform) {
  const row = history?.platforms?.[platform];
  const points = (history?.runs || [])
    .map((run) => {
      const value = row?.values?.[run];
      const number = value?.status === "ok" ? Number(value.number) : NaN;
      if (!Number.isFinite(number)) return null;
      return {
        run,
        time: new Date(run).getTime(),
        number,
        raw: value.raw || String(value.number || ""),
      };
    })
    .filter(Boolean)
    .sort((a, b) => a.time - b.time);
  return {
    name: history?.name || "",
    points,
  };
}

function renderCompareLineChart(series) {
  const validSeries = series.filter((item) => item.points.length);
  const allPoints = validSeries.flatMap((item) => item.points);
  if (allPoints.length === 0) return `<div class="empty">所选节目在该平台暂无有效数据</div>`;

  const width = 920;
  const height = 188;
  const pad = { left: 44, right: 18, top: 22, bottom: 30 };
  const times = allPoints.map((point) => point.time).filter(Number.isFinite);
  const minTime = Math.min(...times);
  const maxTime = Math.max(...times);
  const { minValue, maxValue } = buildCompareValueDomain(allPoints);
  const colors = ["#0f766e", "#2563eb", "#b45309", "#7c3aed", "#dc2626", "#0891b2", "#4d7c0f", "#be185d"];
  const x = (time) => {
    if (maxTime === minTime) return (pad.left + width - pad.right) / 2;
    return pad.left + ((time - minTime) / (maxTime - minTime)) * (width - pad.left - pad.right);
  };
  const y = (value) => height - pad.bottom - ((value - minValue) / (maxValue - minValue)) * (height - pad.top - pad.bottom);
  const yTicks = [minValue, (minValue + maxValue) / 2, maxValue].map(round);
  const timeTicks = buildCompareTimeTicks(times, 10);
  const timeLabelsUseTimeOnly = compareTimesOnSameDay(timeTicks);

  const grid = yTicks.map((tick) => {
    const yy = y(tick);
    return `<g class="compare-grid-line"><line x1="${pad.left}" y1="${yy}" x2="${width - pad.right}" y2="${yy}"></line><text x="${pad.left - 10}" y="${yy + 4}">${escapeHtml(formatCompactNumber(tick))}</text></g>`;
  }).join("");

  const lines = validSeries.map((item, index) => {
    const color = colors[index % colors.length];
    const path = item.points.map((point) => `${round(x(point.time))},${round(y(point.number))}`).join(" ");
    const labeledPointIndexes = buildCompareLabelIndexes(item.points, 13);
    const circles = item.points.map((point, pointIndex) => {
      const cx = round(x(point.time));
      const cy = round(y(point.number));
      const labelY = Math.max(7, Math.min(height - pad.bottom - 3, cy + (index % 2 === 0 ? -4 : 8)));
      const labelAnchor = pointIndex === item.points.length - 1 ? "end" : "middle";
      const label = labeledPointIndexes.has(pointIndex)
        ? `<text class="compare-point-value" x="${cx}" y="${labelY}" text-anchor="${labelAnchor}" fill="${color}">${escapeHtml(formatCompactNumber(point.number))}</text>`
        : "";
      return `
        <circle cx="${cx}" cy="${cy}" r="2.2" fill="${color}">
          <title>${escapeHtml(`${item.name} ${formatShortDate(point.time)} ${point.raw}`)}</title>
        </circle>
        ${label}
      `;
    }).join("");
    return `
      <g class="compare-series">
      ${item.points.length > 1 ? `<polyline points="${path}" fill="none" stroke="${color}" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"></polyline>` : ""}
        ${circles}
      </g>
    `;
  }).join("");

  const legend = validSeries.map((item, index) => `
    <span><i style="background:${colors[index % colors.length]}"></i>${escapeHtml(item.name)}</span>
  `).join("");

  const timeAxis = timeTicks.map((time, index) => {
    const xx = round(x(time));
    const anchor = index === 0 ? "start" : (index === timeTicks.length - 1 ? "end" : "middle");
    const label = formatCompareTimeLabel(time, timeLabelsUseTimeOnly);
    return `
      <g class="compare-time-tick">
        <line x1="${xx}" y1="${height - pad.bottom}" x2="${xx}" y2="${height - pad.bottom + 4}"></line>
        <text class="compare-time-label" x="${xx}" y="${height - 12}" text-anchor="${anchor}">
          <tspan x="${xx}">${escapeHtml(label.primary)}</tspan>
          ${label.secondary ? `<tspan x="${xx}" dy="8">${escapeHtml(label.secondary)}</tspan>` : ""}
        </text>
      </g>
    `;
  }).join("");

  return `
    <svg class="compare-line-svg" viewBox="0 0 ${width} ${height}" role="img" aria-label="节目历史曲线对比">
      <rect x="${pad.left}" y="${pad.top}" width="${width - pad.left - pad.right}" height="${height - pad.top - pad.bottom}" rx="8" class="compare-plot-bg"></rect>
      ${grid}
      <line class="compare-axis" x1="${pad.left}" y1="${height - pad.bottom}" x2="${width - pad.right}" y2="${height - pad.bottom}"></line>
      ${timeAxis}
      ${lines}
    </svg>
    <div class="compare-legend">${legend}</div>
  `;
}

function buildCompareLabelIndexes(points, maxLabels = 13) {
  if (points.length <= maxLabels) return new Set(points.map((_, index) => index));
  const indexes = new Set();
  const lastIndex = points.length - 1;
  for (let i = 0; i < maxLabels; i += 1) {
    indexes.add(Math.round((i / (maxLabels - 1)) * lastIndex));
  }
  return indexes;
}

function buildCompareValueDomain(points) {
  const values = points.map((point) => point.number).filter(Number.isFinite);
  const min = Math.min(...values);
  const max = Math.max(...values);
  const span = max - min || Math.max(Math.abs(max) * 0.02, 1);
  const padding = span * 0.12;
  return {
    minValue: Math.max(0, min - padding),
    maxValue: max + padding,
  };
}

function buildCompareTimeTicks(times, maxTicks = 10) {
  const uniqueTimes = [...new Set(times.filter(Number.isFinite))].sort((a, b) => a - b);
  if (uniqueTimes.length <= 2) return uniqueTimes;
  const minTime = uniqueTimes[0];
  const maxTime = uniqueTimes[uniqueTimes.length - 1];
  const minimumGap = 92;
  const minGapMs = ((maxTime - minTime) * minimumGap) / 920;
  let ticks = [minTime];
  for (const time of uniqueTimes.slice(1, -1)) {
    const last = ticks[ticks.length - 1];
    if (time - last >= minGapMs && maxTime - time >= minGapMs * 0.65) ticks.push(time);
  }
  ticks.push(maxTime);
  if (ticks.length <= maxTicks) return ticks;
  const sampled = [];
  const lastIndex = ticks.length - 1;
  for (let i = 0; i < maxTicks; i += 1) {
    sampled.push(ticks[Math.round((i / (maxTicks - 1)) * lastIndex)]);
  }
  return [...new Set(sampled)].sort((a, b) => a - b);
}

function compareTimesOnSameDay(times) {
  if (!times.length) return false;
  const first = new Date(times[0]);
  return times.every((time) => {
    const date = new Date(time);
    return date.getFullYear() === first.getFullYear()
      && date.getMonth() === first.getMonth()
      && date.getDate() === first.getDate();
  });
}

function formatCompareTimeLabel(value, timeOnly = false) {
  const date = new Date(value);
  if (Number.isNaN(date.getTime())) return { primary: "", secondary: "" };
  const monthDay = `${String(date.getMonth() + 1).padStart(2, "0")}-${String(date.getDate()).padStart(2, "0")}`;
  const hourMinute = `${String(date.getHours()).padStart(2, "0")}:${String(date.getMinutes()).padStart(2, "0")}`;
  return timeOnly
    ? { primary: hourMinute, secondary: "" }
    : { primary: monthDay, secondary: hourMinute };
}

function formatShortDate(value) {
  const date = new Date(value);
  if (Number.isNaN(date.getTime())) return "";
  return `${String(date.getMonth() + 1).padStart(2, "0")}-${String(date.getDate()).padStart(2, "0")} ${String(date.getHours()).padStart(2, "0")}:${String(date.getMinutes()).padStart(2, "0")}`;
}

function formatCompactNumber(value) {
  const number = Number(value);
  if (!Number.isFinite(number)) return "";
  if (Math.abs(number) >= 100_000_000) return `${round(number / 100_000_000)}亿`;
  if (Math.abs(number) >= 10_000) return `${round(number / 10_000)}万`;
  return String(round(number));
}

async function getJson(url) {
  const response = await fetch(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(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("/api/auth/status", { headers: authHeaders() });
    const payload = await response.json();
    if (!payload.enabled || payload.authorized) {
      hideAuthGate();
      return true;
    }
  } catch {}
  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;
  if (appStatusText) appStatusText.textContent = text;
}

function renderAppStatusDock() {
  const port = window.location.port || (window.location.protocol === "https:" ? "443" : "80");
  if (appStatusPort) appStatusPort.textContent = port;
  if (appStatusPortDock) appStatusPortDock.textContent = port;
}

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 round(value) {
  return Math.round(value * 100) / 100;
}

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;");
}