const KEYS = [
  "autoEveryPage",
  "autoKnownSites",
  "autoPageLoad",
  "autoSpaNavigation",
  "toolbarClick",
  "contextMenu",
  "keyboardShortcut",
];

// MUST match DEFAULT_SETTINGS in background.js.
const DEFAULT_TRIGGERS = {
  autoEveryPage: false,
  autoKnownSites: false,
  autoPageLoad: true,
  autoSpaNavigation: true,
  toolbarClick: true,
  contextMenu: true,
  keyboardShortcut: true,
};

// ---------- sidebar nav ----------
function activatePane(pane) {
  if (pane === "backup") pane = "paths";
  if (pane === "review") pane = "maintenance";
  const item = document.querySelector(`.side .item[data-pane="${pane}"]`) || document.querySelector('.side .item[data-pane="triggers"]');
  if (!item) return;
  document.querySelectorAll(".side .item").forEach((i) => i.classList.remove("active"));
  item.classList.add("active");
  document.querySelectorAll(".pane").forEach((p) => p.classList.remove("active"));
  const paneEl = document.getElementById("pane-" + item.dataset.pane);
  if (paneEl) paneEl.classList.add("active");
}

for (const item of document.querySelectorAll(".side .item")) {
  item.addEventListener("click", async () => {
    activatePane(item.dataset.pane);
    await chrome.storage.local.set({ optionsActivePane: item.dataset.pane });
  });
}

function getActionScrollContainer(element) {
  for (let node = element?.parentElement; node; node = node.parentElement) {
    const overflowY = getComputedStyle(node).overflowY;
    if ((overflowY === "auto" || overflowY === "scroll") && node.scrollHeight > node.clientHeight) {
      return node;
    }
  }
  return document.scrollingElement || document.documentElement;
}

function nextAnimationFrame() {
  return new Promise((resolve) => requestAnimationFrame(resolve));
}

function openModal(id) {
  const modal = document.getElementById(id);
  if (!modal) return;
  modal.classList.add("open");
  modal.setAttribute("aria-hidden", "false");
}

function closeModal(id) {
  const modal = document.getElementById(id);
  if (!modal) return;
  modal.classList.remove("open");
  modal.setAttribute("aria-hidden", "true");
}

async function keepActionViewport(action, run) {
  const beforeTop = action?.getBoundingClientRect().top;
  const scroller = getActionScrollContainer(action);
  try {
    return await run();
  } finally {
    await nextAnimationFrame();
    await nextAnimationFrame();
    if (!action?.isConnected || !Number.isFinite(beforeTop)) return;
    const delta = action.getBoundingClientRect().top - beforeTop;
    if (Math.abs(delta) < 1) return;
    if (scroller === document.scrollingElement || scroller === document.documentElement) {
      window.scrollBy(0, delta);
    } else {
      scroller.scrollTop += delta;
    }
  }
}

// ---------- overlay tabs ----------
for (const tab of document.querySelectorAll(".otab")) {
  tab.addEventListener("click", () => {
    document.querySelectorAll(".otab").forEach((t) => t.classList.remove("active"));
    document.querySelectorAll(".otab-panel").forEach((p) => p.classList.remove("active"));
    tab.classList.add("active");
    document.getElementById("otab-" + tab.dataset.otab).classList.add("active");
  });
}

// ---------- settings load / save ----------

async function load() {
  const { settings = {} } = await chrome.storage.sync.get("settings");
  const t = Object.assign({}, DEFAULT_TRIGGERS, settings.triggers || {});
  for (const k of KEYS) document.getElementById(k).checked = !!t[k];
  document.getElementById("quickMode").checked = settings.quickMode !== false;
  document.getElementById("cacheStaleHours").value = Math.max(1, Number(settings.cacheStaleHours) || 24);
  document.getElementById("showOverlay").checked = settings.showOverlay !== false;
  // Overlay options
  const pos = settings.overlayPosition || "top-right";
  for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
    r.checked = r.value === pos;
  }
  syncOverlayPosChips();
  document.getElementById("overlayDuration").value = settings.overlayDuration || 5;
  document.getElementById("overlayGlow").checked = !!settings.overlayGlow;
  document.getElementById("overlayGlowColor").value = settings.overlayGlowColor || "#6ec1ff";
  document.getElementById("overlayGlowBlur").value = settings.overlayGlowBlur ?? 10;
  document.getElementById("overlayGlowSpread").value = settings.overlayGlowSpread ?? 0;
  document.getElementById("overlayGlowOpacity").value = settings.overlayGlowOpacity ?? 0.35;
  // no-match overlay
  document.getElementById("noMatchOverlay").checked = !!settings.noMatchOverlay;
  const nmPos = settings.noMatchPosition || "top-right";
  for (const r of document.querySelectorAll('input[name="noMatchPosition"]')) {
    r.checked = r.value === nmPos;
  }
  syncNoMatchPosChips();
  document.getElementById("noMatchDuration").value = settings.noMatchDuration || 5;
  document.getElementById("noMatchGlow").checked = !!settings.noMatchGlow;
  document.getElementById("noMatchGlowColor").value = settings.noMatchGlowColor || "#ff6666";
  document.getElementById("noMatchGlowBlur").value = settings.noMatchGlowBlur ?? 10;
  document.getElementById("noMatchGlowSpread").value = settings.noMatchGlowSpread ?? 0;
  document.getElementById("noMatchGlowOpacity").value = settings.noMatchGlowOpacity ?? 0.35;
  if (typeof updateOverlayPreview === "function") updateOverlayPreview();
  if (typeof updateNoMatchPreview === "function") updateNoMatchPreview();
  if (typeof updateMutualExclusion === "function") updateMutualExclusion();
  document.getElementById("knownSitePatterns").value = (settings.knownSitePatterns || []).join("\n");
  renderAdapters(settings.siteAdapters || []);
  renderNormalizers(settings.idNormalizers || []);
  renderPartDetectors(settings.partPatterns || []);
  document.getElementById("enableDelete").checked = !!settings.enableDelete;
  const mode = settings.deleteMode === "permanent" ? "permanent" : "trash";
  document.getElementById("deleteModeTrash").checked = mode === "trash";
  document.getElementById("deleteModePerm").checked = mode === "permanent";
  syncRadioChips();
  document.getElementById("trashDir").value = settings.trashDir || "cq:personal-files/.rclone-jav-trash";
  document.getElementById("rcjavPath").value = settings.rcjavPath || "";
  renderProfiles(settings.profiles || []);
  updateSectionSummaries();
  syncDeletionControls();
}

async function save(e) {
  const { settings: existingSettings = {} } = await chrome.storage.sync.get("settings");
  const triggers = {};
  for (const k of KEYS) triggers[k] = document.getElementById(k).checked;
  const knownSitePatterns = document.getElementById("knownSitePatterns").value
    .split(/[\n,]/).map((s) => s.trim()).filter(Boolean);
  const quickMode = document.getElementById("quickMode").checked;
  const cacheStaleHours = Math.max(1, Math.min(8760, parseInt(document.getElementById("cacheStaleHours").value, 10) || 24));
  const showOverlay = document.getElementById("showOverlay").checked;
  const overlayPosition = (document.querySelector('input[name="overlayPosition"]:checked') || {}).value || "top-right";
  const overlayDuration = Math.max(1, parseInt(document.getElementById("overlayDuration").value, 10) || 5);
  const overlayGlow = document.getElementById("overlayGlow").checked;
  const overlayGlowColor = document.getElementById("overlayGlowColor").value || "#6ec1ff";
  const overlayGlowBlur = parseInt(document.getElementById("overlayGlowBlur").value, 10);
  const overlayGlowSpread = parseInt(document.getElementById("overlayGlowSpread").value, 10);
  const overlayGlowOpacity = parseFloat(document.getElementById("overlayGlowOpacity").value);
  const noMatchOverlay = document.getElementById("noMatchOverlay").checked;
  const noMatchPosition = (document.querySelector('input[name="noMatchPosition"]:checked') || {}).value || "top-right";
  const noMatchDuration = Math.max(1, parseInt(document.getElementById("noMatchDuration").value, 10) || 5);
  const noMatchGlow = document.getElementById("noMatchGlow").checked;
  const noMatchGlowColor = document.getElementById("noMatchGlowColor").value || "#ff6666";
  const noMatchGlowBlur = parseInt(document.getElementById("noMatchGlowBlur").value, 10);
  const noMatchGlowSpread = parseInt(document.getElementById("noMatchGlowSpread").value, 10);
  const noMatchGlowOpacity = parseFloat(document.getElementById("noMatchGlowOpacity").value);
  const siteAdapters = readAdapters();
  const idNormalizers = readNormalizers();
  const partPatterns = readPartDetectors();
  const enableDelete = document.getElementById("enableDelete").checked;
  const deleteMode = document.getElementById("deleteModePerm").checked ? "permanent" : "trash";
  const trashDir = document.getElementById("trashDir").value.trim() || "cq:personal-files/.rclone-jav-trash";
  const rcjavPath = document.getElementById("rcjavPath").value.trim();
  const payload = {
    triggers, knownSitePatterns, quickMode, cacheStaleHours,
    showOverlay, overlayPosition, overlayDuration, overlayGlow, overlayGlowColor, overlayGlowBlur, overlayGlowSpread, overlayGlowOpacity,
    noMatchOverlay, noMatchPosition, noMatchDuration, noMatchGlow, noMatchGlowColor, noMatchGlowBlur, noMatchGlowSpread, noMatchGlowOpacity,
    siteAdapters, idNormalizers, partPatterns, enableDelete, deleteMode, trashDir, rcjavPath,
    profiles: readProfiles(),
    activeProfile: existingSettings.activeProfile || "",
    scanPaused: !!existingSettings.scanPaused,
  };
  const btn = e && e.target ? e.target : null;
  const saved = btn && btn.nextElementSibling;
  try {
    await chrome.storage.sync.set({ settings: payload });
  } catch (err) {
    // chrome.storage.sync has 8 KB/item + 100 KB total quota. Long adapter or
    // normalizer lists can blow it; without this try/catch the rejection is
    // silently swallowed and the "Saved." chip never appears.
    if (saved && saved.classList.contains("saved")) {
      saved.textContent = "Save failed: " + (err.message || String(err));
      saved.classList.add("show", "error");
      setTimeout(() => { saved.classList.remove("show", "error"); saved.textContent = "Saved."; }, 4000);
    } else {
      alert("Failed to save settings: " + (err.message || String(err)));
    }
    return;
  }
  chrome.runtime.sendMessage({ type: "settings-changed" });
  updateSectionSummaries();

  // Show "Saved." chip on the button that triggered this
  if (saved && saved.classList.contains("saved")) {
    saved.classList.add("show");
    setTimeout(() => saved.classList.remove("show"), 1500);
  }
}

for (const btn of document.querySelectorAll(".save-btn")) {
  btn.addEventListener("click", save);
}

function plural(n, word) {
  return `${n} ${word}${n === 1 ? "" : "s"}`;
}

function setNote(id, html, kind = "") {
  const el = document.getElementById(id);
  if (!el) return;
  el.className = "section-note" + (kind ? ` ${kind}` : "");
  el.innerHTML = html;
}

function updateSectionSummaries() {
  const knownSites = document.getElementById("knownSitePatterns").value
    .split(/[\n,]/).map((s) => s.trim()).filter(Boolean);
  const triggersOn = KEYS.filter((k) => document.getElementById(k)?.checked);
  const autoOn = document.getElementById("autoEveryPage").checked || document.getElementById("autoKnownSites").checked;
  setNote("trigger-summary",
    `${autoOn ? "Auto-check is enabled" : "Auto-check is off"} · ${plural(knownSites.length, "known site")} · ${plural(triggersOn.length, "manual/navigation control")} enabled`,
    autoOn ? "" : "warn");

  const match = document.getElementById("showOverlay").checked;
  const noMatch = document.getElementById("noMatchOverlay").checked;
  setNote("overlay-summary", `Match overlay ${match ? "on" : "off"} · no-match overlay ${noMatch ? "on" : "off"} · positions are kept separate to avoid overlap`, match || noMatch ? "" : "warn");

  const adapters = readAdapters();
  setNote("adapter-summary", `${plural(adapters.length, "custom adapter")} configured · built-in ClearJAV preset always runs`, adapters.length ? "" : "info");

  const normalizers = readNormalizers();
  const partPatterns = readPartDetectors();
  setNote("normalizer-summary", `${plural(normalizers.length, "custom normalizer")} · ${plural(partPatterns.length, "custom part detector")} · built-in FC2 and multipart rules active`, normalizers.length || partPatterns.length ? "" : "info");

  const quick = document.getElementById("quickMode").checked;
  setNote("search-summary", quick ? "LIVE mode: single-ID lookups query rclone directly and bypass cache." : "CACHE mode: lookups use cache.json; rebuild cache after library or ID-normalization changes.");

  const path = document.getElementById("rcjavPath").value.trim();
  setNote("paths-summary", path ? `Using extension override: <code>${escapeHtml(path)}</code>` : "Using native host default rc-jav path.", path ? "" : "info");

  const profiles = readProfiles();
  setNote("profiles-summary", profiles.length ? `${plural(profiles.length, "profile")} configured. Empty source/target lists inherit config.json defaults.` : "No profiles configured. Popup searches use rc-jav config.json defaults.", profiles.length ? "" : "info");

  const settingCount = Object.keys(SETTINGS_SCHEMA).length;
  setNote("backup-summary", `Backups include ${settingCount} recognized settings keys. Export before moving the extension or changing its ID.`, "info");

  const deleteOn = document.getElementById("enableDelete").checked;
  const mode = document.getElementById("deleteModePerm").checked ? "permanent delete" : "trash mode";
  setNote("deletion-summary", deleteOn ? `Deletion is enabled in ${mode}. Popup confirmation still requires typing the exact filename.` : "Deletion is disabled. Popup delete controls stay hidden.", deleteOn ? "danger" : "");
}

function syncDeletionControls() {
  const enabled = document.getElementById("enableDelete").checked;
  for (const id of ["deleteModeTrash", "deleteModePerm", "trashDir"]) {
    const el = document.getElementById(id);
    if (el) el.disabled = !enabled;
  }
  for (const el of [document.getElementById("deleteModeTrashLbl")?.closest(".fieldset"), document.getElementById("trashDir")?.closest(".fieldset")]) {
    if (el) el.classList.toggle("disabled-soft", !enabled);
  }
}

document.getElementById("enableDelete").addEventListener("change", (event) => {
  if (!event.target.checked) return;
  event.target.checked = false;
  syncDeletionControls();
  updateSectionSummaries();
  openModal("delete-enable-modal");
});
function closeDeleteEnableModal() {
  closeModal("delete-enable-modal");
}
document.getElementById("delete-enable-modal-confirm").addEventListener("click", () => {
  document.getElementById("enableDelete").checked = true;
  closeDeleteEnableModal();
  syncDeletionControls();
  updateSectionSummaries();
});
for (const id of ["delete-enable-modal-close", "delete-enable-modal-cancel"]) {
  document.getElementById(id).addEventListener("click", closeDeleteEnableModal);
}
document.getElementById("delete-enable-modal").addEventListener("click", (event) => {
  if (event.target.id === "delete-enable-modal") closeDeleteEnableModal();
});

document.addEventListener("input", (e) => {
  if (e.target && e.target.closest(".pane")) updateSectionSummaries();
});
document.addEventListener("change", (e) => {
  if (e.target && e.target.closest(".pane")) {
    if (e.target.id === "enableDelete") syncDeletionControls();
    updateSectionSummaries();
  }
});

// ---------- backup & restore ----------

document.getElementById("export-settings").addEventListener("click", async () => {
  const { settings = {} } = await chrome.storage.sync.get("settings");
  const payload = {
    _meta: { app: "rclonex", exported_at: new Date().toISOString(), version: 1 },
    settings,
  };
  const blob = new Blob([JSON.stringify(payload, null, 2)], { type: "application/json" });
  const url = URL.createObjectURL(blob);
  const a = document.createElement("a");
  const stamp = new Date().toISOString().replace(/[:.]/g, "-").slice(0, 19);
  a.href = url;
  a.download = `rclonex-settings-${stamp}.json`;
  document.body.appendChild(a);
  a.click();
  document.body.removeChild(a);
  URL.revokeObjectURL(url);
  setBackupStatus("exported.", "ok");
});

document.getElementById("import-settings").addEventListener("click", () => {
  document.getElementById("import-file").click();
});

// Allowlist of settings keys with their expected primitive types. Imports
// containing any other key are dropped silently; primitives must match.
// Nested objects (triggers, siteAdapters[].*) get a recursive shallow check.
const SETTINGS_SCHEMA = {
  triggers: "object",
  knownSitePatterns: "array",
  quickMode: "boolean",
  cacheStaleHours: "number",
  scanPaused: "boolean",
  rcjavPath: "string",
  showOverlay: "boolean",
  overlayPosition: "string",
  overlayDuration: "number",
  overlayGlow: "boolean",
  overlayGlowColor: "string",
  overlayGlowBlur: "number",
  overlayGlowSpread: "number",
  overlayGlowOpacity: "number",
  noMatchOverlay: "boolean",
  noMatchPosition: "string",
  noMatchDuration: "number",
  noMatchGlow: "boolean",
  noMatchGlowColor: "string",
  noMatchGlowBlur: "number",
  noMatchGlowSpread: "number",
  noMatchGlowOpacity: "number",
  enableDelete: "boolean",
  deleteMode: "string",
  trashDir: "string",
  idNormalizers: "array",
  partPatterns: "array",
  siteAdapters: "array",
  profiles: "array",
  activeProfile: "string",
};

function _typeOf(v) {
  if (Array.isArray(v)) return "array";
  if (v === null) return "null";
  return typeof v;
}

function sanitizeImportedSettings(incoming) {
  if (typeof incoming !== "object" || incoming === null || Array.isArray(incoming)) {
    throw new Error("settings must be a JSON object");
  }
  const out = {};
  const dropped = [];
  for (const [k, v] of Object.entries(incoming)) {
    const expected = SETTINGS_SCHEMA[k];
    if (!expected) { dropped.push(k); continue; }
    if (_typeOf(v) !== expected) { dropped.push(`${k}(wrong type)`); continue; }
    out[k] = v;
  }
  return { sanitized: out, dropped };
}

let pendingImport = null;

function closeImportModal() {
  pendingImport = null;
  closeModal("import-modal");
}

function openImportModal(fileName, sanitized, dropped) {
  pendingImport = { sanitized, dropped };
  document.getElementById("import-modal-subtitle").textContent = fileName || "settings JSON";
  document.getElementById("import-modal-body").innerHTML = `
    <div class="modal-help">Review this import before it replaces the current extension settings.</div>
    <div class="diag-row warn"><span class="icon">!</span><span class="name">Overwrite</span><span class="detail">Current settings will be replaced by ${escapeHtml(Object.keys(sanitized).length)} imported value(s).</span></div>
    <div class="diag-row info"><span class="icon">i</span><span class="name">Profiles</span><span class="detail">${escapeHtml(Array.isArray(sanitized.profiles) ? `${sanitized.profiles.length} profile(s) in this import` : "No profile list in this import")}</span></div>
    <div class="diag-row ${sanitized.enableDelete ? "warn" : "info"}"><span class="icon">${sanitized.enableDelete ? "!" : "i"}</span><span class="name">Deletion</span><span class="detail">${escapeHtml(sanitized.enableDelete ? `Enabled in imported settings (${sanitized.deleteMode || "trash"} mode)` : "Not enabled by this import")}</span></div>
    ${dropped.length ? `<div class="diag-row warn"><span class="icon">!</span><span class="name">Ignored keys</span><span class="detail">${escapeHtml(`${dropped.length}: ${dropped.slice(0, 8).join(", ")}${dropped.length > 8 ? "..." : ""}`)}</span></div>` : `<div class="diag-row ok"><span class="icon">✓</span><span class="name">Schema</span><span class="detail">All imported keys are recognized.</span></div>`}
  `;
  openModal("import-modal");
}

document.getElementById("import-file").addEventListener("change", async (e) => {
  const file = e.target.files?.[0];
  if (!file) return;
  try {
    const text = await file.text();
    const data = JSON.parse(text);
    const incoming = data.settings || data;
    const { sanitized, dropped } = sanitizeImportedSettings(incoming);
    if (Object.keys(sanitized).length === 0) {
      throw new Error("no recognized settings keys in file");
    }
    openImportModal(file.name, sanitized, dropped);
  } catch (err) {
    setBackupStatus("import failed: " + err.message, "fail");
  }
  e.target.value = "";
});

document.getElementById("import-modal-confirm").addEventListener("click", async () => {
  if (!pendingImport) return;
  const { sanitized, dropped } = pendingImport;
  try {
    await chrome.storage.sync.set({ settings: sanitized });
    chrome.runtime.sendMessage({ type: "settings-changed" });
    closeImportModal();
    setBackupStatus(`imported${dropped.length ? ` (${dropped.length} key(s) dropped)` : ""}. reloading...`, "ok");
    setTimeout(() => location.reload(), 600);
  } catch (err) {
    setBackupStatus("import failed: " + (err.message || String(err)), "fail");
  }
});
document.getElementById("import-modal-close").addEventListener("click", closeImportModal);
document.getElementById("import-modal-cancel").addEventListener("click", () => {
  setBackupStatus("cancelled.", "warn");
  closeImportModal();
});
document.getElementById("import-modal").addEventListener("click", (event) => {
  if (event.target.id === "import-modal") closeImportModal();
});

function setBackupStatus(msg, kind) {
  const el = document.getElementById("backup-status");
  el.textContent = msg;
  el.style.color = kind === "ok" ? "#afa" : kind === "fail" ? "#faa" : "#ffa";
  setTimeout(() => { el.textContent = ""; }, 4000);
}

function appendListValue(textareaId, value) {
  const el = document.getElementById(textareaId);
  const parts = el.value.split(/[\n,]/).map((s) => s.trim()).filter(Boolean);
  if (!parts.some((p) => p.toLowerCase() === value.toLowerCase())) parts.push(value);
  el.value = parts.join("\n");
  updateSectionSummaries();
}

document.getElementById("add-clearjav-site").addEventListener("click", () => {
  appendListValue("knownSitePatterns", "clearjav.com");
  document.getElementById("known-site-status").textContent = "added clearjav.com";
});

document.getElementById("add-current-site").addEventListener("click", async () => {
  const status = document.getElementById("known-site-status");
  status.textContent = "finding current site...";
  const all = await chrome.tabs.query({});
  const web = all.filter((t) => t.url && /^https?:/.test(t.url));
  web.sort((a, b) => (b.lastAccessed || 0) - (a.lastAccessed || 0));
  const tab = web[0];
  if (!tab) {
    status.textContent = "no http/https tab found";
    return;
  }
  try {
    const host = new URL(tab.url).hostname.replace(/^www\./, "");
    appendListValue("knownSitePatterns", host);
    status.textContent = `added ${host}`;
  } catch {
    status.textContent = "could not read active site";
  }
});


// ---------- recent activity ----------

function fmtActivityWhen(ts) {
  if (!ts) return "?";
  const s = Math.max(0, Math.round((Date.now() - ts) / 1000));
  if (s < 60) return `${s}s ago`;
  if (s < 3600) return `${Math.round(s / 60)}m ago`;
  if (s < 86400) return `${Math.round(s / 3600)}h ago`;
  return `${Math.round(s / 86400)}d ago`;
}

let recentActivityEntries = [];
let activityFilter = "all";

function activityOutcomeView(outcome) {
  if (outcome === "hit") return { label: "Match", cls: "hit" };
  if (outcome === "miss") return { label: "No Match", cls: "miss" };
  if (outcome === "no_id") return { label: "No ID", cls: "no-id" };
  if (outcome === "paused") return { label: "Paused", cls: "paused" };
  return { label: outcome === "error" ? "Error" : (outcome || "Unknown"), cls: "error" };
}

function activityMatchesFilter(entry) {
  if (activityFilter === "all") return true;
  if (activityFilter === "other") return !["hit", "miss", "no_id"].includes(entry.outcome);
  return entry.outcome === activityFilter;
}

function updateActivityFilterButtons() {
  document.querySelectorAll("#activity-filters .activity-filter").forEach((btn) => {
    btn.classList.toggle("active", btn.dataset.activityFilter === activityFilter);
  });
}

function renderActivity(entries = recentActivityEntries) {
  recentActivityEntries = entries || [];
  const out = document.getElementById("activity-results");
  if (!recentActivityEntries.length) {
    out.innerHTML = `<span style="color:#777;">no recent activity yet</span>`;
    return;
  }
  const visible = recentActivityEntries.filter(activityMatchesFilter).slice(0, 20);
  if (!visible.length) {
    out.innerHTML = `<span style="color:#777;">no recent activity for this filter</span>`;
    return;
  }
  out.innerHTML = visible.map((e) => {
    const outcome = activityOutcomeView(e.outcome);
    const id = e.id || "no ID";
    const mode = e.mode ? ` · ${e.mode}` : "";
    const timing = Number.isFinite(e.total_ms) ? ` · ${e.total_ms}ms total` : "";
    const page = e.title || e.url || e.reason || "";
    const reason = e.reason && e.reason !== page ? `<div style="color:#888;margin-left:12px;">${escapeHtml(e.reason)}</div>` : "";
    return `<div class="activity-entry">
      <div class="activity-head">
        <span class="activity-pill ${escapeHtml(outcome.cls)}">${escapeHtml(outcome.label)}</span>
        <span>${escapeHtml(id)}</span>
        <span class="activity-meta">${escapeHtml(e.trigger || "page")} · ${escapeHtml(fmtActivityWhen(e.ts))}${escapeHtml(mode)}${escapeHtml(timing)}</span>
      </div>
      <div style="color:#777;margin-left:12px;">${escapeHtml(page)}</div>
      ${reason}
    </div>`;
  }).join("");
}

async function refreshActivity() {
  const out = document.getElementById("activity-results");
  out.textContent = "loading activity...";
  try {
    const r = await chrome.runtime.sendMessage({ type: "recent-activity" });
    if (!r || !r.ok) {
      out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(r?.error || "no response")}`;
      return;
    }
    renderActivity(r.entries || []);
  } catch (err) {
    out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(err.message || String(err))}`;
  }
}

document.getElementById("activity-refresh").addEventListener("click", refreshActivity);
document.getElementById("activity-clear").addEventListener("click", async () => {
  if (!confirm("Clear recent activity?")) return;
  await chrome.runtime.sendMessage({ type: "clear-recent-activity" });
  renderActivity([]);
});
document.getElementById("activity-filters").addEventListener("click", (e) => {
  const btn = e.target.closest(".activity-filter");
  if (!btn) return;
  activityFilter = btn.dataset.activityFilter || "all";
  updateActivityFilterButtons();
  renderActivity();
});
updateActivityFilterButtons();

// ---------- search test bench ----------

function benchLookupRow(label, response) {
  if (!response || !response.ok) {
    const blocked = response?.paused ? "scanning paused" : response?.error || "no response";
    return `<div class="diag-row fail"><span class="icon">x</span><span class="name">${escapeHtml(label)}</span><span class="detail">${escapeHtml(blocked)}</span></div>`;
  }
  const query = (response.queries || [])[0] || {};
  const hitCount = Number(query.hits || response.hits || 0);
  const status = hitCount ? "ok" : "warn";
  const sample = (query.structured || response.structured || [])
    .slice(0, 2)
    .map((row) => row.full_path || row.path || row.jav_id)
    .filter(Boolean)
    .join(" | ");
  const timing = response.timings?.host_rcjav_ms ?? response.timings?.native_ms ?? "?";
  const detail = `${hitCount} hit(s) · ${timing}ms${sample ? ` · ${sample}` : ` · ${query.no_match_title || response.no_match_title || "No library hit"}`}`;
  return `<div class="diag-row ${status}"><span class="icon">${hitCount ? "OK" : "!"}</span><span class="name">${escapeHtml(label)}</span><span class="detail">${escapeHtml(detail)}</span></div>`;
}

function benchLookupHits(response) {
  if (!response || !response.ok) return null;
  const query = (response.queries || [])[0] || {};
  return Number(query.hits || response.hits || 0);
}

async function runSearchBench() {
  const out = document.getElementById("search-bench-results");
  const text = document.getElementById("search-bench-input").value.trim();
  if (!text) {
    out.innerHTML = `<span style="color:#ffa;">paste an ID or text that contains one</span>`;
    return;
  }
  out.textContent = "extracting ID...";
  try {
    const extraction = await chrome.runtime.sendMessage({
      type: "test-id-text",
      text,
      normalizers: readNormalizers(),
    });
    if (!extraction || !extraction.ok) {
      out.innerHTML = `<span style="color:#faa;">extract failed:</span> ${escapeHtml(extraction?.error || "no response")}`;
      return;
    }
    const extracted = extraction.extracted || {};
    const extractionRows = [
      `<div class="diag-row ${extracted.id ? "ok" : "warn"}"><span class="icon">${extracted.id ? "OK" : "!"}</span><span class="name">Extracted ID</span><span class="detail">${escapeHtml(extracted.id || "none")}</span></div>`,
      `<div class="diag-row info"><span class="icon">i</span><span class="name">Rule</span><span class="detail">${escapeHtml(extracted.source || "none")}${extracted.pattern ? ` · ${escapeHtml(extracted.pattern)}` : ""}${extracted.replacement ? ` -> ${escapeHtml(extracted.replacement)}` : ""}</span></div>`,
    ];
    if (!extracted.id) {
      out.innerHTML = extractionRows.join("") + `<div style="color:#777;margin-top:7px;">No lookup ran because the pasted sample did not extract an ID.</div>`;
      return;
    }
    out.innerHTML = extractionRows.join("") + `<div style="color:#777;margin-top:7px;">Comparing LIVE and CACHE for ${escapeHtml(extracted.id)}...</div>`;
    const [settings, live, cached] = await Promise.all([
      chrome.runtime.sendMessage({ type: "get-settings" }),
      chrome.runtime.sendMessage({ type: "bulk-query", queries: [extracted.id], quick: true }),
      chrome.runtime.sendMessage({ type: "bulk-query", queries: [extracted.id], quick: false }),
    ]);
    const liveHits = benchLookupHits(live);
    const cacheHits = benchLookupHits(cached);
    const mismatch = liveHits != null && cacheHits != null && liveHits !== cacheHits;
    const activeProfile = settings?.activeProfile || "config.json defaults";
    out.innerHTML = [
      ...extractionRows,
      `<div class="diag-row info"><span class="icon">i</span><span class="name">Profile</span><span class="detail">${escapeHtml(activeProfile)}</span></div>`,
      benchLookupRow("LIVE", live),
      benchLookupRow("CACHE", cached),
      mismatch
        ? `<div class="diag-row warn"><span class="icon">!</span><span class="name">Mismatch</span><span class="detail">LIVE and CACHE returned different hit counts. Check cache coverage/freshness and rebuild after ID-rule or library changes.</span></div>`
        : `<div class="diag-row ok"><span class="icon">OK</span><span class="name">Compare</span><span class="detail">LIVE and CACHE returned the same hit count.</span></div>`,
      `<div style="color:#777;margin-top:7px;">Extraction uses the ID Rules currently shown on this page. Search lookups use saved host settings and the active profile.</div>`,
    ].join("");
  } catch (err) {
    out.innerHTML = `<span style="color:#faa;">test failed:</span> ${escapeHtml(err.message || String(err))}`;
  }
}

document.getElementById("search-bench-run").addEventListener("click", runSearchBench);
document.getElementById("search-bench-clear").addEventListener("click", () => {
  document.getElementById("search-bench-input").value = "";
  document.getElementById("search-bench-results").innerHTML = "";
});

// ---------- bulk ID check ----------

function readBulkIds() {
  return [...new Set(document.getElementById("bulk-id-input").value
    .split(/[\s,]+/)
    .map((x) => x.trim())
    .filter(Boolean))];
}

function renderBulkResults(r) {
  const out = document.getElementById("bulk-id-results");
  if (!r || !r.ok) {
    out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(r?.error || "no response")}`;
    return;
  }
  const rows = [
    `<div><span style="color:#777;">Mode:</span> ${escapeHtml(r.search_mode || "?")} · <span style="color:#777;">Queries:</span> ${escapeHtml(r.query_count || 0)} · <span style="color:#777;">Hits:</span> ${escapeHtml(r.hits || 0)} · <span style="color:#777;">Host:</span> ${escapeHtml(r.timings?.host_rcjav_ms ?? "?")}ms</div>`,
  ];
  for (const q of r.queries || []) {
    const hit = q.hits > 0;
    const sample = (q.structured || []).slice(0, 3).map((h) => h.full_path || h.path || h.jav_id).join(" | ");
    rows.push(`<div style="margin-top:7px;">
      <span style="color:${hit ? "#afa" : "#ffa"};font-weight:600;">${hit ? "HIT" : "MISS"}</span>
      <span>${escapeHtml(q.query || "?")}</span> · ${escapeHtml(q.hits || 0)} hit(s)
      ${sample ? `<div style="color:#777;margin-left:12px;">${escapeHtml(sample)}</div>` : `<div style="color:#777;margin-left:12px;">${escapeHtml(q.no_match_title || "No library hit")}</div>`}
    </div>`);
  }
  out.innerHTML = rows.join("");
}

document.getElementById("bulk-id-run").addEventListener("click", async () => {
  const out = document.getElementById("bulk-id-results");
  const queries = readBulkIds();
  if (!queries.length) {
    out.innerHTML = `<span style="color:#ffa;">paste at least one ID</span>`;
    return;
  }
  out.textContent = `checking ${queries.length} ID(s)...`;
  const r = await chrome.runtime.sendMessage({
    type: "bulk-query",
    queries,
    quick: document.getElementById("quickMode").checked,
  });
  renderBulkResults(r);
});
document.getElementById("bulk-id-clear").addEventListener("click", () => {
  document.getElementById("bulk-id-input").value = "";
  document.getElementById("bulk-id-results").innerHTML = "";
});


// ---------- adapters ----------

function renderAdapters(list) {
  const tbody = document.querySelector("#adapters tbody");
  tbody.innerHTML = "";
  for (const a of list) addAdapterRow(a.host || "", a.selector || "");
  if (list.length === 0) addAdapterRow("", "");
}

function addAdapterRow(host, selector) {
  const tbody = document.querySelector("#adapters tbody");
  const tr = document.createElement("tr");
  tr.innerHTML = `
    <td><input type="text" class="host" placeholder="clearjav.com"></td>
    <td><input type="text" class="selector" placeholder=".some-class"></td>
    <td><button class="del" type="button">×</button></td>`;
  tr.querySelector(".host").value = host;
  tr.querySelector(".selector").value = selector;
  tr.querySelector(".del").addEventListener("click", () => tr.remove());
  tbody.appendChild(tr);
}

function readAdapters() {
  const rows = document.querySelectorAll("#adapters tbody tr");
  const out = [];
  for (const tr of rows) {
    const host = tr.querySelector(".host").value.trim();
    const selector = tr.querySelector(".selector").value.trim();
    if (host && selector) out.push({ host, selector });
  }
  return out;
}

document.getElementById("add-adapter").addEventListener("click", () => addAdapterRow("", ""));

document.getElementById("validate-adapters").addEventListener("click", () => {
  const status = document.getElementById("picker-status");
  const rows = [...document.querySelectorAll("#adapters tbody tr")];
  const seen = new Set();
  const issues = [];
  for (const tr of rows) {
    const host = tr.querySelector(".host").value.trim();
    const selector = tr.querySelector(".selector").value.trim();
    tr.style.outline = "";
    if (!host && !selector) continue;
    if (!host || !selector) {
      issues.push("rows need both host and selector");
      tr.style.outline = "1px solid #775";
      continue;
    }
    const key = host.toLowerCase();
    if (seen.has(key)) {
      issues.push(`duplicate host: ${host}`);
      tr.style.outline = "1px solid #775";
    }
    seen.add(key);
    try { document.querySelector(selector); } catch {
      issues.push(`invalid CSS selector for ${host}`);
      tr.style.outline = "1px solid #775";
    }
  }
  status.textContent = issues.length ? [...new Set(issues)].join("; ") : `${readAdapters().length} adapter row(s) look valid`;
  updateSectionSummaries();
});

// ---------- ID normalizers ----------

function renderNormalizers(list) {
  const tbody = document.querySelector("#normalizers tbody");
  tbody.innerHTML = "";
  for (const n of list) addNormalizerRow(n.re || "", n.fmt || "");
  if (list.length === 0) addNormalizerRow("", "");
}

function addNormalizerRow(re, fmt) {
  const tbody = document.querySelector("#normalizers tbody");
  const tr = document.createElement("tr");
  tr.innerHTML = `
    <td><input type="text" class="re" placeholder="\\b1pondo-?(\\d{4,})-?(\\d{2,})\\b"></td>
    <td><input type="text" class="fmt" placeholder="1pondo-$1-$2"></td>
    <td><button class="del" type="button">×</button></td>`;
  tr.querySelector(".re").value = re;
  tr.querySelector(".fmt").value = fmt;
  tr.querySelector(".del").addEventListener("click", () => tr.remove());
  tbody.appendChild(tr);
}

function readNormalizers() {
  const rows = document.querySelectorAll("#normalizers tbody tr");
  const out = [];
  for (const tr of rows) {
    const re = tr.querySelector(".re").value.trim();
    const fmt = tr.querySelector(".fmt").value.trim();
    if (re && fmt) out.push({ re, fmt });
  }
  return out;
}

document.getElementById("add-normalizer").addEventListener("click", () => addNormalizerRow("", ""));

document.getElementById("validate-normalizers").addEventListener("click", () => {
  const status = document.getElementById("normalizer-status");
  const rows = [...document.querySelectorAll("#normalizers tbody tr")];
  const issues = [];
  for (const tr of rows) {
    tr.style.outline = "";
    const re = tr.querySelector(".re").value.trim();
    const fmt = tr.querySelector(".fmt").value.trim();
    if (!re && !fmt) continue;
    if (!re || !fmt) {
      issues.push("rows need both regex and replacement");
      tr.style.outline = "1px solid #775";
      continue;
    }
    try { new RegExp(re, "i"); } catch (err) {
      issues.push(`invalid regex: ${err.message}`);
      tr.style.outline = "1px solid #775";
    }
  }
  status.textContent = issues.length ? issues.join("; ") : `${readNormalizers().length} normalizer row(s) look valid`;
  updateSectionSummaries();
});

// ---------- custom part detectors ----------

const PART_DETECTOR_SAMPLES = [
  "KV-118 - Aiba Reika_PART1.mp4",
  "KV-118 - Aiba Reika_PART2.mp4",
  "KV-118 - Aiba Reika_PART3.mp4",
  "KV-118_1.mp4",
  "KV-118_2.mp4",
  "KV-118-pt1.mp4",
  "KV-118-part2.mp4",
  "KV-118-cd1.mp4",
  "KV-118-disc2.mp4",
  "KV-118 (1).mp4",
  "KV-118 (1 of 3).mp4",
  "KV-118.1of3.mp4",
  "KV-118-2 of 4.mp4",
  "OFJE-195-1 [480p].mp4",
  "OFJE-195-2 [480p].mp4",
  "OFJE-195-3 [480p].mp4",
  "KV-118_A.mp4",
  "KV-118-B.mp4",
  "KV-118A.mp4",
  "KV-118 1.mp4",
  "KV-118-P1.mp4",
  "KV-118_P2.mp4",
  "KV-118 Part 3.mp4",
  "KV-118_EP1.mp4",
  "KV-118 Episode 2.mp4",
  "KV-118_Vol1.mp4",
  "KV-118 Volume 2.mp4",
  "KV-118_Scene1.mp4",
  "KV-118_Side-A.mp4",
];

const BUILTIN_PART_DETECTORS = [
  { pattern: "[-_ ](?:pt|part|cd|disc)[-_ ]?(\\d+)$", note: "pt / part / cd / disc number" },
  { pattern: "\\s*\\((\\d+)(?:\\s*of\\s*\\d+)?\\)$", note: "parenthesized part number or X of Y" },
  { pattern: "[._ -](\\d+)\\s*of\\s*\\d+$", note: "X of Y suffix" },
  { pattern: "_(\\d{1,2})$", note: "underscore number" },
  { pattern: "-(\\d{1,2})$", note: "hyphen short part number" },
  { pattern: "[-_]([A-D])$", note: "lettered part with separator" },
  { pattern: "(?<=\\d)([A-D])$", note: "lettered part directly after ID" },
  { pattern: "\\s+(\\d{1,2})$", note: "trailing spaced number" },
];

function partDetectorStem(filename) {
  return filename.replace(/\.[^.]+$/, "");
}

function partDetectorStemStages(filename) {
  const raw = partDetectorStem(filename);
  const resolutionClean = raw.replace(/\s*\[[^\]]*\]\s*$/, "").trim();
  let actressClean = resolutionClean;
  if (actressClean.includes(" - ")) actressClean = actressClean.slice(0, actressClean.indexOf(" - ")).trim();
  const stages = [];
  for (const [label, stem] of [
    ["raw stem", raw],
    ["after trailing metadata cleanup", resolutionClean],
    ["after actress cleanup", actressClean],
  ]) {
    if (stem && !stages.some((stage) => stage.stem === stem)) stages.push({ label, stem });
  }
  return stages;
}

function partDetectorRegex(pattern) {
  // Custom detectors are Python regexes, but the common detector subset is
  // shared with browser RegExp. Preview the representative shapes here; rc-jav
  // remains authoritative when the saved rule runs during scan/search.
  return new RegExp(pattern, "i");
}

function builtinPartCoverage(filename) {
  for (const detector of BUILTIN_PART_DETECTORS) {
    try {
      const re = partDetectorRegex(detector.pattern);
      for (const stage of partDetectorStemStages(filename)) {
        const match = stage.stem.match(re);
        if (match && match[1]) return detector;
      }
    } catch {}
  }
  return null;
}

function updatePartDetectorFeedback(row) {
  const feedback = row.querySelector(".part-detector-feedback");
  const pattern = row.querySelector(".part-detector-pattern").value.trim();
  if (!pattern) {
    feedback.innerHTML = `<span class="warn">Enter a detector regex.</span> Capture group 1 should be the part token.`;
    return;
  }
  let re;
  try {
    re = partDetectorRegex(pattern);
  } catch (err) {
    feedback.innerHTML = `<span class="fail">Invalid preview regex:</span> ${escapeHtml(err.message || String(err))}`;
    return;
  }
  const matches = [];
  let missingCapture = false;
  for (const filename of PART_DETECTOR_SAMPLES) {
    for (const stage of partDetectorStemStages(filename)) {
      const match = stage.stem.match(re);
      if (!match) continue;
      if (!match[1]) missingCapture = true;
      matches.push({ filename, part: match[1] || "?", stage: stage.label });
      break;
    }
  }
  if (!matches.length) {
    feedback.innerHTML = `<span class="warn">No representative sample matched.</span> The rule may still be valid for a library-specific filename shape.`;
    return;
  }
  const isBuiltin = row.classList.contains("builtin");
  const covered = !isBuiltin ? matches.map((item) => ({ item, detector: builtinPartCoverage(item.filename) })) : [];
  const alreadyCovered = covered.length && covered.every((entry) => entry.detector);
  const coveredNote = alreadyCovered
    ? `<div class="warn">These representative matches are already covered by built-in detector${new Set(covered.map((entry) => entry.detector.pattern)).size === 1 ? "" : "s"}.</div>`
    : "";
  feedback.innerHTML = [
    `<span class="${missingCapture ? "warn" : "ok"}">${missingCapture ? "Matched, but capture group 1 was missing for a sample." : `Matches ${matches.length} representative filename shape${matches.length === 1 ? "" : "s"}.`}</span>`,
    coveredNote,
    ...matches.slice(0, 4).map((item) => `<div class="part-detector-match">${escapeHtml(item.filename)} -> part ${escapeHtml(item.part)} <span style="color:#777;">(${escapeHtml(item.stage)})</span></div>`),
    matches.length > 4 ? `<div>and ${escapeHtml(matches.length - 4)} more representative match(es)</div>` : "",
  ].filter(Boolean).join("");
}

function addPartDetectorRow(pattern = "", { builtin = false, note = "" } = {}) {
  const list = document.getElementById(builtin ? "builtin-part-detectors" : "part-detectors");
  const row = document.createElement("div");
  row.className = "part-detector-row" + (builtin ? " builtin" : "");
  row.innerHTML = `
    <div class="part-detector-head">
      <input type="text" class="part-detector-pattern" placeholder="_PART(\\d+)$"${builtin ? " readonly" : ""}>
      ${builtin ? `<span class="part-detector-kind">Built in</span>` : `<button type="button" title="Remove detector">x</button>`}
    </div>
    ${note ? `<div class="muted" style="margin-top:5px;">${escapeHtml(note)}</div>` : ""}
    <div class="part-detector-feedback"></div>
  `;
  row.querySelector(".part-detector-pattern").value = pattern;
  if (!builtin) {
    row.querySelector(".part-detector-pattern").addEventListener("input", () => {
      updatePartDetectorFeedback(row);
      updateSectionSummaries();
    });
    row.querySelector("button").addEventListener("click", () => {
      row.remove();
      if (!list.children.length) addPartDetectorRow("");
      updateSectionSummaries();
    });
  }
  list.appendChild(row);
  updatePartDetectorFeedback(row);
  return row;
}

function renderPartDetectors(patterns) {
  const builtinList = document.getElementById("builtin-part-detectors");
  const list = document.getElementById("part-detectors");
  builtinList.innerHTML = "";
  list.innerHTML = "";
  for (const detector of BUILTIN_PART_DETECTORS) addPartDetectorRow(detector.pattern, { builtin: true, note: detector.note });
  for (const pattern of patterns || []) addPartDetectorRow(pattern);
  if (!list.children.length) addPartDetectorRow("");
}

function readPartDetectors() {
  return [...document.querySelectorAll("#part-detectors .part-detector-pattern")]
    .map((input) => input.value.trim())
    .filter(Boolean);
}

document.getElementById("add-part-detector").addEventListener("click", () => {
  addPartDetectorRow("").querySelector(".part-detector-pattern").focus();
});

// Tester
document.getElementById("norm-test-run").addEventListener("click", async () => {
  const input = document.getElementById("norm-test-in").value;
  const out = document.getElementById("norm-test-out");
  out.textContent = "testing text...";
  try {
    const r = await chrome.runtime.sendMessage({
      type: "test-id-text",
      text: input,
      normalizers: readNormalizers(),
    });
    if (!r || !r.ok) {
      out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(r?.error || "no response")}`;
      return;
    }
    const e = r.extracted || {};
    out.innerHTML = [
      `<div><span style="color:#777;">ID:</span> <span style="color:${e.id ? "#afa" : "#faa"};">${escapeHtml(e.id || "none")}</span></div>`,
      `<div><span style="color:#777;">Rule:</span> ${escapeHtml(e.source || "none")}</div>`,
      e.pattern ? `<div><span style="color:#777;">Pattern:</span> ${escapeHtml(e.pattern)}</div>` : "",
      e.replacement ? `<div><span style="color:#777;">Replacement:</span> ${escapeHtml(e.replacement)}</div>` : "",
      e.raw ? `<div><span style="color:#777;">Raw:</span> ${escapeHtml(e.raw)}</div>` : "",
    ].filter(Boolean).join("");
  } catch (err) {
    out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(err.message || String(err))}`;
  }
});

// ---------- element picker ----------

// Track the active picker poll so re-clicking "Pick Element" cancels the prior
// poll instead of leaving two racing on the same session-storage key.
let activePickerPoll = null;
window.addEventListener("pagehide", () => {
  if (activePickerPoll != null) { clearInterval(activePickerPoll); activePickerPoll = null; }
});

async function startPicker() {
  const status = document.getElementById("picker-status");
  if (activePickerPoll != null) {
    clearInterval(activePickerPoll);
    activePickerPoll = null;
    // Drop any stale prior result so the new poll doesn't see it.
    await chrome.storage.session.remove("lastPickerResult");
  }
  status.textContent = "starting picker…";
  const resp = await chrome.runtime.sendMessage({ type: "start-picker", from: "options" });
  if (!resp || !resp.ok) {
    status.textContent = "error: " + (resp?.error || "no response");
    return;
  }
  status.textContent = `picker armed on: ${resp.url || "(unknown tab)"} — click an element, Esc to cancel`;
  const start = Date.now();
  const poll = setInterval(async () => {
    const { lastPickerResult } = await chrome.storage.session.get("lastPickerResult");
    if (lastPickerResult && lastPickerResult.ts > start) {
      clearInterval(poll); activePickerPoll = null;
      await chrome.storage.session.remove("lastPickerResult");
      if (lastPickerResult.type === "picker-cancelled") {
        status.textContent = "cancelled";
        return;
      }
      const host = lastPickerResult.host || "";
      const hostPattern = host ? host.replace(/^www\./, "") : "";
      const selector = lastPickerResult.selector || "";
      const rows = document.querySelectorAll("#adapters tbody tr");
      let replaced = false;
      for (const tr of rows) {
        const existing = tr.querySelector(".host").value.trim().toLowerCase();
        if (existing === hostPattern.toLowerCase()) {
          tr.querySelector(".selector").value = selector;
          replaced = true;
          break;
        }
      }
      if (!replaced) addAdapterRow(hostPattern, selector);
      for (const tr of document.querySelectorAll("#adapters tbody tr")) {
        const h = tr.querySelector(".host").value.trim();
        const s = tr.querySelector(".selector").value.trim();
        if (!h && !s) tr.remove();
      }
      status.textContent = `${replaced ? "updated" : "added"}: ${selector} (sample: "${(lastPickerResult.sample || "").slice(0, 60)}", detected: ${lastPickerResult.detectedId || "no ID"})`;
    }
    if (Date.now() - start > 120000) {
      clearInterval(poll); activePickerPoll = null;
      status.textContent = "timed out (2 min)";
    }
  }, 500);
  activePickerPoll = poll;
}

document.getElementById("pick-element").addEventListener("click", startPicker);

document.getElementById("test-active-page").addEventListener("click", async () => {
  const wrap = document.getElementById("adapter-test-result");
  const out = document.getElementById("adapter-test-output");
  wrap.style.display = "";
  out.textContent = "testing active page...";
  try {
    const r = await chrome.runtime.sendMessage({
      type: "test-active-page",
      adapters: readAdapters(),
      normalizers: readNormalizers(),
    });
    if (!r || !r.ok) {
      out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(r?.error || "no response")}`;
      return;
    }
    const e = r.extracted || {};
    const selected = e.selected || {};
    const stage = (name, value) => `<div><span style="color:#777;">${escapeHtml(name)}:</span> <span style="color:${value?.id ? "#afa" : "#666"};">${escapeHtml(value?.id || "none")}</span>${value?.raw ? ` · ${escapeHtml(value.raw)}` : ""}</div>`;
    out.innerHTML = [
      `<div><span style="color:#777;">ID:</span> <span style="color:${e.id ? "#afa" : "#faa"};">${escapeHtml(e.id || "none")}</span></div>`,
      `<div><span style="color:#777;">Source:</span> ${escapeHtml(e.source || "none")}</div>`,
      selected.adapter ? `<div><span style="color:#777;">Adapter:</span> ${escapeHtml(selected.adapter)}</div>` : "",
      selected.selector ? `<div><span style="color:#777;">Selector:</span> ${escapeHtml(selected.selector)}</div>` : "",
      selected.raw ? `<div><span style="color:#777;">Selected raw:</span> ${escapeHtml(selected.raw)}</div>` : "",
      `<div style="margin-top:5px;color:#888;">Stage trace</div>`,
      stage("Adapter", e.stages?.adapter),
      stage("Title", e.stages?.title),
      stage("URL", e.stages?.url),
      `<div><span style="color:#777;">URL:</span> ${escapeHtml(r.tab?.url || "")}</div>`,
      `<div><span style="color:#777;">Title:</span> ${escapeHtml(r.tab?.title || "")}</div>`,
    ].filter(Boolean).join("");
  } catch (err) {
    out.innerHTML = `<span style="color:#faa;">error:</span> ${escapeHtml(err.message || String(err))}`;
  }
});

// ---------- radio chips selected styling ----------

function syncRadioChips() {
  const trashLbl = document.getElementById("deleteModeTrashLbl");
  const permLbl = document.getElementById("deleteModePermLbl");
  trashLbl.classList.toggle("selected", document.getElementById("deleteModeTrash").checked);
  permLbl.classList.toggle("selected", document.getElementById("deleteModePerm").checked);
  permLbl.classList.add("danger");  // permanent always carries the danger style; .selected.danger = red
}
document.getElementById("deleteModeTrash").addEventListener("change", syncRadioChips);
document.getElementById("deleteModePerm").addEventListener("change", syncRadioChips);

function syncOverlayPosChips() {
  for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
    r.parentElement.classList.toggle("selected", r.checked);
  }
}
for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
  r.addEventListener("change", () => { syncOverlayPosChips(); updateOverlayPreview(); });
}

// ---------- live overlay preview ----------

function hexToRgba(hex, a) {
  const m = String(hex).match(/^#?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i);
  if (!m) return `rgba(110,193,255,${a})`;
  return `rgba(${parseInt(m[1], 16)},${parseInt(m[2], 16)},${parseInt(m[3], 16)},${a})`;
}

function updateOverlayPreview() {
  const preview = document.getElementById("overlay-preview");
  const stage = document.getElementById("overlay-preview-stage");
  const posLabel = document.getElementById("overlay-preview-pos");
  if (!preview) return;
  const pos = (document.querySelector('input[name="overlayPosition"]:checked') || {}).value || "top-right";
  const glow = document.getElementById("overlayGlow").checked;
  const color = document.getElementById("overlayGlowColor").value || "#6ec1ff";
  const blur = parseInt(document.getElementById("overlayGlowBlur").value, 10) || 0;
  const spread = parseInt(document.getElementById("overlayGlowSpread").value, 10) || 0;
  const opacity = parseFloat(document.getElementById("overlayGlowOpacity").value) || 0.35;
  const dur = Math.max(1, parseInt(document.getElementById("overlayDuration").value, 10) || 5);

  // Stage alignment hints at chosen position
  stage.style.alignItems = pos.startsWith("top") ? "flex-start" : "flex-end";
  stage.style.justifyContent = pos.endsWith("left") ? "flex-start" : "flex-end";
  posLabel.textContent = `— ${pos} · ${dur}s · ${glow ? "glow on" : "no glow"}`;

  // Reflect slider values
  document.getElementById("overlayGlowBlurVal").textContent = `${blur} px`;
  document.getElementById("overlayGlowSpreadVal").textContent = `${spread} px`;
  document.getElementById("overlayGlowOpacityVal").textContent = opacity.toFixed(2);

  preview.style.boxShadow = glow
    ? `0 6px 20px rgba(0,0,0,0.55), 0 0 ${blur}px ${spread}px ${hexToRgba(color, opacity)}`
    : "0 6px 20px rgba(0,0,0,0.55)";

  // Restart progress bar animation with current duration
  const bar = document.getElementById("overlay-preview-bar");
  bar.style.animation = "none";
  // force reflow
  void bar.offsetWidth;
  bar.style.animation = `rxshrink-preview ${dur}s linear infinite`;
}

// Inject keyframes once
(function injectPreviewKeyframes() {
  const s = document.createElement("style");
  s.textContent = "@keyframes rxshrink-preview { from { transform: scaleX(1); } to { transform: scaleX(0); } }";
  document.head.appendChild(s);
})();

document.getElementById("overlayGlow").addEventListener("change", updateOverlayPreview);
document.getElementById("overlayGlowColor").addEventListener("input", updateOverlayPreview);
document.getElementById("overlayDuration").addEventListener("input", updateOverlayPreview);
document.getElementById("overlayGlowBlur").addEventListener("input", updateOverlayPreview);
document.getElementById("overlayGlowSpread").addEventListener("input", updateOverlayPreview);
document.getElementById("overlayGlowOpacity").addEventListener("input", updateOverlayPreview);
document.getElementById("overlay-preview-replay").addEventListener("click", updateOverlayPreview);

// ---------- no-match overlay ----------

function syncNoMatchPosChips() {
  for (const r of document.querySelectorAll('input[name="noMatchPosition"]')) {
    r.parentElement.classList.toggle("selected", r.checked);
  }
}

function updateMutualExclusion() {
  // Disable the radio in noMatchPosition that matches the chosen overlayPosition.
  const matchPos = (document.querySelector('input[name="overlayPosition"]:checked') || {}).value;
  for (const r of document.querySelectorAll('input[name="noMatchPosition"]')) {
    const same = r.value === matchPos;
    r.disabled = same;
    r.parentElement.style.opacity = same ? "0.4" : "";
    r.parentElement.style.pointerEvents = same ? "none" : "";
    if (same && r.checked) {
      // Auto-switch to first non-disabled
      r.checked = false;
      const fallback = Array.from(document.querySelectorAll('input[name="noMatchPosition"]'))
        .find((x) => x.value !== matchPos);
      if (fallback) fallback.checked = true;
      syncNoMatchPosChips();
      updateNoMatchPreview();
    }
  }
  // Same in reverse for overlayPosition (disable noMatch's selected one)
  const nmPos = (document.querySelector('input[name="noMatchPosition"]:checked') || {}).value;
  for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
    const same = r.value === nmPos && document.getElementById("noMatchOverlay").checked;
    r.disabled = same;
    r.parentElement.style.opacity = same ? "0.4" : "";
    r.parentElement.style.pointerEvents = same ? "none" : "";
  }
}

function updateNoMatchPreview() {
  const preview = document.getElementById("no-match-preview");
  const stage = document.getElementById("no-match-preview-stage");
  const posLabel = document.getElementById("no-match-preview-pos");
  if (!preview) return;
  const pos = (document.querySelector('input[name="noMatchPosition"]:checked') || {}).value || "top-right";
  const glow = document.getElementById("noMatchGlow").checked;
  const color = document.getElementById("noMatchGlowColor").value || "#ff6666";
  const blur = parseInt(document.getElementById("noMatchGlowBlur").value, 10) || 0;
  const spread = parseInt(document.getElementById("noMatchGlowSpread").value, 10) || 0;
  const opacity = parseFloat(document.getElementById("noMatchGlowOpacity").value) || 0.35;
  const dur = Math.max(1, parseInt(document.getElementById("noMatchDuration").value, 10) || 5);

  stage.style.alignItems = pos.startsWith("top") ? "flex-start" : "flex-end";
  stage.style.justifyContent = pos.endsWith("left") ? "flex-start" : "flex-end";
  posLabel.textContent = `— ${pos} · ${dur}s · ${glow ? "glow on" : "no glow"}`;

  document.getElementById("noMatchGlowBlurVal").textContent = `${blur} px`;
  document.getElementById("noMatchGlowSpreadVal").textContent = `${spread} px`;
  document.getElementById("noMatchGlowOpacityVal").textContent = opacity.toFixed(2);

  preview.style.boxShadow = glow
    ? `0 6px 20px rgba(0,0,0,0.55), 0 0 ${blur}px ${spread}px ${hexToRgba(color, opacity)}`
    : "0 6px 20px rgba(0,0,0,0.55)";

  const bar = document.getElementById("no-match-preview-bar");
  bar.style.animation = "none";
  void bar.offsetWidth;
  bar.style.animation = `rxshrink-preview ${dur}s linear infinite`;
}

for (const r of document.querySelectorAll('input[name="noMatchPosition"]')) {
  r.addEventListener("change", () => { syncNoMatchPosChips(); updateNoMatchPreview(); updateMutualExclusion(); });
}
for (const id of ["noMatchOverlay", "noMatchGlow"]) {
  document.getElementById(id).addEventListener("change", () => { updateNoMatchPreview(); updateMutualExclusion(); });
}
for (const id of ["noMatchGlowColor", "noMatchDuration", "noMatchGlowBlur", "noMatchGlowSpread", "noMatchGlowOpacity"]) {
  document.getElementById(id).addEventListener("input", updateNoMatchPreview);
}
document.getElementById("no-match-preview-replay").addEventListener("click", updateNoMatchPreview);

// When match position changes, re-evaluate mutual exclusion
for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
  r.addEventListener("change", updateMutualExclusion);
}

document.getElementById("no-match-reset").addEventListener("click", () => {
  document.getElementById("noMatchOverlay").checked = false;
  for (const r of document.querySelectorAll('input[name="noMatchPosition"]')) {
    r.checked = r.value === "top-right";
  }
  syncNoMatchPosChips();
  document.getElementById("noMatchDuration").value = 5;
  document.getElementById("noMatchGlow").checked = false;
  document.getElementById("noMatchGlowColor").value = "#ff6666";
  document.getElementById("noMatchGlowBlur").value = 10;
  document.getElementById("noMatchGlowSpread").value = 0;
  document.getElementById("noMatchGlowOpacity").value = 0.35;
  updateNoMatchPreview();
  updateMutualExclusion();
  updateSectionSummaries();
});

document.getElementById("overlay-reset").addEventListener("click", () => {
  // Reset all overlay-related form fields to defaults.
  document.getElementById("showOverlay").checked = true;
  for (const r of document.querySelectorAll('input[name="overlayPosition"]')) {
    r.checked = r.value === "top-right";
  }
  syncOverlayPosChips();
  document.getElementById("overlayDuration").value = 5;
  document.getElementById("overlayGlow").checked = false;
  document.getElementById("overlayGlowColor").value = "#6ec1ff";
  document.getElementById("overlayGlowBlur").value = 10;
  document.getElementById("overlayGlowSpread").value = 0;
  document.getElementById("overlayGlowOpacity").value = 0.35;
  updateOverlayPreview();
  updateSectionSummaries();
});


// ---------- diagnostics ----------

// Extension ID display + copy button (added when Transfer Assistant was deleted).
// Diagnostics is the canonical home for "what's my extension ID?" info now.
(() => {
  const idEl = document.getElementById("diag-extension-id");
  const copyBtn = document.getElementById("diag-copy-extension-id");
  if (idEl) idEl.textContent = chrome.runtime.id;
  if (copyBtn) {
    copyBtn.addEventListener("click", async () => {
      try {
        await navigator.clipboard.writeText(chrome.runtime.id);
        copyBtn.textContent = "Copied";
        setTimeout(() => { copyBtn.textContent = "Copy ID"; }, 1200);
      } catch (_) {
        copyBtn.textContent = "Copy failed";
        setTimeout(() => { copyBtn.textContent = "Copy ID"; }, 1200);
      }
    });
  }
})();

document.getElementById("run-diag").addEventListener("click", (event) =>
  keepActionViewport(event.currentTarget, runDiagnostics)
);
document.getElementById("host-status-run").addEventListener("click", (event) =>
  keepActionViewport(event.currentTarget, runHostStatus)
);
document.getElementById("host-repair-run").addEventListener("click", (event) =>
  keepActionViewport(event.currentTarget, runHostRepair)
);
document.getElementById("host-verify-run").addEventListener("click", (event) =>
  keepActionViewport(event.currentTarget, runHostStatus)
);
document.getElementById("run-all-diag").addEventListener("click", (event) =>
  keepActionViewport(event.currentTarget, async () => {
    clearNativeRepairCard();
    const runtime = await runDiagnostics();
    if (runtime && runtime.nativeBlocked) {
      renderBlockedByNativeIssue(document.getElementById("host-status-results"), "Host registration");
      return;
    }
    await runHostStatus();
  })
);

function renderDiagRows(out, checks, emptyLabel) {
  out.innerHTML = "";
  if (!checks || checks.length === 0) {
    out.innerHTML = `<div class="diag-row warn"><span class="icon">!</span><span class="name">${escapeHtml(emptyLabel)}</span><span class="detail">no checks returned</span></div>`;
    return;
  }
  const counts = checks.reduce((acc, c) => {
    const status = c.status || "warn";
    acc[status] = (acc[status] || 0) + 1;
    return acc;
  }, {});
  const summary = document.createElement("div");
  summary.className = "diag-row " + ((counts.fail || 0) ? "fail" : (counts.warn || 0) ? "warn" : "ok");
  summary.innerHTML = `<span class="icon">#</span><span class="name">summary</span><span class="detail">${checks.length} checks · ok ${counts.ok || 0} · info ${counts.info || 0} · warn ${counts.warn || 0} · fail ${counts.fail || 0}</span>`;
  out.appendChild(summary);
  for (const c of checks) {
    const row = document.createElement("div");
    row.className = "diag-row " + (c.status || "warn");
    const status = c.status || "warn";
    const icon = status === "ok" ? "✓" : status === "info" ? "i" : status === "warn" ? "!" : "✗";
    row.innerHTML = `<span class="icon">${icon}</span><span class="name">${escapeHtml(c.name)}</span><span class="detail">${formatDiagDetail(c.detail || "")}</span>`;
    out.appendChild(row);
  }
}

function formatDiagDetail(detail) {
  const text = String(detail || "");
  if (!text) return "";
  const shouldCollapse = text.length > 120 || text.includes("\n") || (text.match(/[;|]/g) || []).length > 2;
  if (!shouldCollapse) return escapeHtml(text);
  const first = text.split(/\r?\n/)[0].slice(0, 110);
  return `<details><summary>${escapeHtml(first)}${text.length > first.length ? "…" : ""}</summary><pre>${escapeHtml(text)}</pre></details>`;
}

async function runDiagnostics() {
  const out = document.getElementById("diag-results");
  clearNativeRepairCard();
  out.innerHTML = '<div class="diag-row warn"><span class="icon">…</span><span class="name">running…</span><span class="detail">waiting for native host</span></div>';
  try {
    const r = await chrome.runtime.sendMessage({ type: "diagnostics" });
    if (!r || !r.ok) {
      await renderNativeMessagingFailure(r);
      renderBlockedByNativeIssue(out, "Runtime diagnostics");
      return { nativeBlocked: true };
    }
    renderDiagRows(out, r.checks || [], "runtime");
    return { ok: true };
  } catch (err) {
    out.innerHTML = `<div class="diag-row fail"><span class="icon">✗</span><span class="name">runtime</span><span class="detail">${escapeHtml(err.message || String(err))}</span></div>`;
    return { ok: false };
  }
}

async function runHostStatus() {
  const out = document.getElementById("host-status-results");
  clearNativeRepairCard();
  out.innerHTML = '<div class="diag-row warn"><span class="icon">…</span><span class="name">checking…</span><span class="detail">reading manifest and registry state</span></div>';
  try {
    const r = await chrome.runtime.sendMessage({ type: "host-status" });
    if (!r || !r.ok) {
      await renderNativeMessagingFailure(r);
      renderBlockedByNativeIssue(out, "Native host checks");
      return { nativeBlocked: true };
    }
    renderDiagRows(out, r.checks || [], "host status");
    return { ok: true };
  } catch (err) {
    out.innerHTML = `<div class="diag-row fail"><span class="icon">✗</span><span class="name">host status</span><span class="detail">${escapeHtml(err.message || String(err))}</span></div>`;
    return { ok: false };
  }
}

async function runHostRepair() {
  const out = document.getElementById("host-status-results");
  clearNativeRepairCard();
  out.innerHTML = '<div class="diag-row warn"><span class="icon">…</span><span class="name">repairing…</span><span class="detail">updating reachable native host manifest and user registration</span></div>';
  try {
    const r = await chrome.runtime.sendMessage({ type: "repair-host" });
    if (!r || !r.ok) {
      if (r?.error_kind) {
        await renderNativeMessagingFailure(r);
        renderBlockedByNativeIssue(out, "Registration repair");
      } else {
        out.innerHTML = `<div class="diag-row fail"><span class="icon">✗</span><span class="name">Registration repair</span><span class="detail">${escapeHtml(r?.error || "repair failed")}</span></div>`;
      }
      return { ok: false };
    }
    const checks = r.verification?.checks || [];
    renderDiagRows(out, checks, "repair verification");
    renderCompletedNativeRepair(r);
    return { ok: true };
  } catch (err) {
    out.innerHTML = `<div class="diag-row fail"><span class="icon">✗</span><span class="name">Registration repair</span><span class="detail">${escapeHtml(err.message || String(err))}</span></div>`;
    return { ok: false };
  }
}

function clearNativeRepairCard() {
  const card = document.getElementById("native-repair-card");
  const out = document.getElementById("native-repair-results");
  const title = document.getElementById("native-repair-title");
  if (card) card.style.display = "none";
  if (out) out.innerHTML = "";
  if (title) title.textContent = "Native host setup";
}

function renderCompletedNativeRepair(response) {
  const card = document.getElementById("native-repair-card");
  const out = document.getElementById("native-repair-results");
  if (!card || !out) return;
  card.style.display = "";
  const title = document.getElementById("native-repair-title");
  if (title) title.textContent = "Registration repair completed";
  const regs = (response.registrations || []).filter((x) => x.status === "ok").length;
  out.innerHTML = `
    <div class="diag-row ok"><span class="icon">✓</span><span class="name">Repair applied</span><span class="detail">${escapeHtml(response.message || "native host registration repaired")}</span></div>
    <div class="diag-row info"><span class="icon">i</span><span class="name">Manifest</span><span class="detail">${escapeHtml(response.manifest_path || "")}</span></div>
    <div class="diag-row info"><span class="icon">i</span><span class="name">User registry</span><span class="detail">${escapeHtml(`${regs} HKCU registration entr${regs === 1 ? "y" : "ies"} updated`)}</span></div>
    <div class="diag-row warn"><span class="icon">!</span><span class="name">Restart required</span><span class="detail">Fully close Brave, reopen it, reload the extension, then click Verify Registration. If Brave still blocks the host, run the registration steps shown by Diagnostics.</span></div>
  `;
}

function renderBlockedByNativeIssue(out, title) {
  out.innerHTML = `<div class="diag-row info"><span class="icon">i</span><span class="name">${escapeHtml(title)}</span><span class="detail">Blocked until this PC registers the native host for the current extension ID. Use the setup card above.</span></div>`;
}

async function getPackagedHostPaths() {
  try {
    const resp = await fetch(chrome.runtime.getURL("host/com.rcjav.host.json"));
    if (!resp.ok) return {};
    const manifest = await resp.json();
    const bat = manifest.path || "";
    const hostDir = bat.replace(/[\\/][^\\/]+$/, "");
    return {
      hostBat: bat,
      hostDir,
      registerBat: hostDir ? hostDir + "\\register-host.bat" : "",
      installPs1: hostDir ? hostDir + "\\install-host.ps1" : "",
    };
  } catch {
    return {};
  }
}

async function renderNativeMessagingFailure(response) {
  const card = document.getElementById("native-repair-card");
  const out = document.getElementById("native-repair-results");
  if (!card || !out) return;
  card.style.display = "";
  const title = document.getElementById("native-repair-title");
  if (title) title.textContent = "Register host on this PC";
  const error = response?.error || "no response";
  const kind = response?.error_kind || (/forbidden/i.test(error) ? "forbidden" : "unknown");
  const extensionId = response?.extension_id || chrome.runtime.id;
  const paths = await getPackagedHostPaths();
  const installCommand = paths.installPs1
    ? `pwsh -ExecutionPolicy Bypass -File "${paths.installPs1}" -ExtensionId ${extensionId}`
    : `pwsh -ExecutionPolicy Bypass -File ".\\host\\install-host.ps1" -ExtensionId ${extensionId}`;
  const registerCommand = paths.registerBat ? `"${paths.registerBat}"` : ".\\host\\register-host.bat";
  let cause = "This extension cannot launch the native messaging host yet.";
  let fix = "Register the host for this extension ID, fully restart Brave, then verify registration.";
  if (kind === "forbidden") {
    cause = "Brave found the native host, but this extension ID is not allowed to launch it on this PC.";
    fix = "This usually happens after loading the extension on another PC or under a different extension ID.";
  } else if (kind === "not_found") {
    cause = "Brave could not find a registered native messaging host for com.rcjav.host on this PC.";
    fix = "Run the registration script from the extension host folder.";
  } else if (kind === "disconnected") {
    cause = "The native host started and then disconnected or crashed.";
    fix = "After registration is fixed, run Runtime diagnostics again to check Python, rc-jav, and rclone.";
  } else if (kind === "timeout") {
    cause = "The native host did not respond before the timeout.";
    fix = "Restart Brave and check whether a scan or rclone command is stuck.";
  }
  out.innerHTML = `
    <div class="diag-row warn"><span class="icon">!</span><span class="name">Setup required</span><span class="detail">Native host registration must be fixed before cache, runtime, and host checks can run.</span></div>
    <div class="diag-row warn"><span class="icon">!</span><span class="name">Likely cause</span><span class="detail">${escapeHtml(cause)}</span></div>
    <div class="diag-row info"><span class="icon">i</span><span class="name">Host message</span><span class="detail">${escapeHtml(error)}</span></div>
    <div class="diag-row ok"><span class="icon">→</span><span class="name">Fix on this PC</span><span class="detail">${escapeHtml(fix)}</span></div>
    <div class="diag-row info"><span class="icon">i</span><span class="name">Extension ID</span><span class="detail">${escapeHtml(extensionId)}</span></div>
    <div class="diag-row info"><span class="icon">1</span><span class="name">Run register-host</span><span class="detail">
      <details open><summary>${escapeHtml(registerCommand)}</summary><pre>${escapeHtml(`Run ${registerCommand}\nWhen it asks for the extension ID, enter:\n${extensionId}\n\nPowerShell alternative:\n${installCommand}`)}</pre></details>
      <span class="diag-action"><button type="button" data-copy="${escapeHtml(registerCommand)}" data-copy-label="Copy Script Path">Copy Script Path</button><button type="button" data-copy="${escapeHtml(extensionId)}" data-copy-label="Copy Extension ID">Copy Extension ID</button><button type="button" data-copy="${escapeHtml(installCommand)}" data-copy-label="Copy PowerShell Alternative">Copy PowerShell Alternative</button></span>
    </span></div>
    <div class="diag-row info"><span class="icon">2</span><span class="name">Restart Brave</span><span class="detail">Close every Brave window/process, reopen Brave, then reload the extension.</span></div>
    <div class="diag-row info"><span class="icon">3</span><span class="name">Verify</span><span class="detail"><span class="diag-action"><button type="button" data-verify-registration>Verify Registration</button></span></span></div>
  `;
  for (const btn of out.querySelectorAll("button[data-copy]")) {
    btn.addEventListener("click", async () => {
      await navigator.clipboard.writeText(btn.dataset.copy || "");
      btn.textContent = "Copied";
      setTimeout(() => { btn.textContent = btn.dataset.copyLabel || "Copy"; }, 1200);
    });
  }
  for (const btn of out.querySelectorAll("button[data-verify-registration]")) {
    btn.addEventListener("click", runHostStatus);
  }
}

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

// ---------- profiles ----------

let _knownRemotes = [];  // ["cq:", "gdrive:", ...] from rclone listremotes
let _cfgDefaults = { source: [], target: [] };
let _remotesLoaded = false;

async function fetchRemotes() {
  const status = document.getElementById("profiles-status");
  if (_remotesLoaded) return;
  _remotesLoaded = true;
  if (status) status.textContent = "loading remotes...";
  try {
    const r = await chrome.runtime.sendMessage({ type: "list-remotes" });
    if (r && r.ok) {
      _knownRemotes = r.remotes || [];
      _cfgDefaults = { source: r.default_source || [], target: r.default_target || [] };
      if (status) status.textContent = `${_knownRemotes.length} remote(s) loaded`;
      // Re-render to populate selects now that we have data
      const profiles = readProfiles();
      renderProfiles(profiles);
      updateSectionSummaries();
    }
  } catch (e) {
    _remotesLoaded = false;
    if (status) status.textContent = "failed to load remotes";
  }
}

document.querySelector('.side .item[data-pane="profiles"]').addEventListener("click", fetchRemotes);
document.getElementById("load-remotes").addEventListener("click", () => {
  _remotesLoaded = false;
  fetchRemotes();
});

/**
 * Build a remote picker widget.
 * Shows: a <select> dropdown of known remotes + an editable path suffix input +
 * an Add button. Added remotes appear as chips below with × to remove.
 * Falls back gracefully to a plain text input if no remotes loaded yet.
 */
function buildRemotePicker(container, values) {
  container.innerHTML = "";

  // --- selected list ---
  const selectedList = document.createElement("div");
  selectedList.className = "prof-selected-list";
  selectedList.style.cssText = "margin-bottom:6px;";
  container.appendChild(selectedList);

  function addChip(path) {
    const chip = document.createElement("div");
    chip.className = "prof-chip";
    chip.style.cssText = "display:flex;align-items:center;gap:6px;margin-bottom:4px;";
    // Editable path so user can adjust subpath after picking
    const inp = document.createElement("input");
    inp.type = "text";
    inp.value = path;
    inp.className = "prof-chip-input";
    inp.style.cssText = "flex:1;font-family:Consolas,monospace;font-size:12px;";
    const rm = document.createElement("button");
    rm.type = "button";
    rm.textContent = "×";
    rm.title = "Remove";
    rm.style.cssText = "background:#511;border:1px solid #722;color:#faa;border-radius:3px;padding:0 7px;cursor:pointer;font-size:14px;line-height:1;";
    rm.addEventListener("click", () => chip.remove());
    chip.appendChild(inp);
    chip.appendChild(rm);
    selectedList.appendChild(chip);
  }

  // Pre-populate with existing values
  for (const v of (values || [])) addChip(v);

  // --- add row: select + optional subpath + Add button ---
  const addRow = document.createElement("div");
  addRow.style.cssText = "display:flex;gap:6px;align-items:center;flex-wrap:wrap;";

  const sel = document.createElement("select");
  sel.style.cssText = "background:#0d0d0d;color:#ddd;border:1px solid #2a2a2a;border-radius:4px;padding:5px 8px;font-family:Consolas,monospace;font-size:12px;min-width:130px;";
  if (_knownRemotes.length) {
    for (const r of _knownRemotes) {
      const opt = document.createElement("option");
      opt.value = r;
      opt.textContent = r;
      sel.appendChild(opt);
    }
  } else {
    const opt = document.createElement("option");
    opt.value = "";
    opt.textContent = "(loading…)";
    sel.appendChild(opt);
  }

  const subpathInp = document.createElement("input");
  subpathInp.type = "text";
  subpathInp.placeholder = "optional/subpath";
  subpathInp.style.cssText = "flex:1;min-width:120px;font-family:Consolas,monospace;font-size:12px;";
  subpathInp.title = "Append a subpath to narrow the remote, e.g. JAV/ClearJAV";

  const addBtn = document.createElement("button");
  addBtn.type = "button";
  addBtn.textContent = "+ Add";
  addBtn.style.cssText = "padding:5px 12px;font-size:12px;white-space:nowrap;";
  addBtn.addEventListener("click", () => {
    const base = sel.value.trim();
    if (!base) return;
    const sub = subpathInp.value.trim().replace(/^\//, "");
    const full = sub ? base + sub : base;
    addChip(full);
    subpathInp.value = "";
  });

  // Also allow typing a fully custom path
  const customInp = document.createElement("input");
  customInp.type = "text";
  customInp.placeholder = "or type full path (e.g. cq:JAV/ClearJAV)";
  customInp.style.cssText = "flex:1;min-width:160px;font-family:Consolas,monospace;font-size:12px;margin-top:4px;";
  const customBtn = document.createElement("button");
  customBtn.type = "button";
  customBtn.textContent = "+ Add";
  customBtn.style.cssText = "padding:5px 12px;font-size:12px;margin-top:4px;white-space:nowrap;";
  customBtn.addEventListener("click", () => {
    const v = customInp.value.trim();
    if (v) { addChip(v); customInp.value = ""; }
  });
  customInp.addEventListener("keydown", (e) => { if (e.key === "Enter") { e.preventDefault(); customBtn.click(); } });

  addRow.appendChild(sel);
  addRow.appendChild(subpathInp);
  addRow.appendChild(addBtn);
  container.appendChild(addRow);

  const customRow = document.createElement("div");
  customRow.style.cssText = "display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:4px;";
  customRow.appendChild(customInp);
  customRow.appendChild(customBtn);
  container.appendChild(customRow);
}

function readRemoteGroup(container) {
  return [...container.querySelectorAll(".prof-chip-input")]
    .map(i => i.value.trim()).filter(Boolean);
}

function describeProfileRoots(label, values, defaults) {
  const roots = (values || []).filter(Boolean);
  if (roots.length) return `${label}: ${roots.join(", ")}`;
  if ((defaults || []).length) return `${label}: config default ${defaults.join(", ")}`;
  return `${label}: config.json default`;
}

function cloneProfile(profile) {
  return {
    name: (profile?.name || "").trim(),
    source: [...(profile?.source || [])].filter(Boolean),
    target: [...(profile?.target || [])].filter(Boolean),
  };
}

function buildProfileRow(profile) {
  const p = cloneProfile(profile);
  const row = document.createElement("div");
  row.className = "profile-card prof-row";
  row._profile = p;
  const detail = document.createElement("div");
  detail.innerHTML = `
    <div class="name">${escapeHtml(p.name)}</div>
    <div class="roots">${escapeHtml(describeProfileRoots("Source", p.source, _cfgDefaults.source))}<br>${escapeHtml(describeProfileRoots("Target", p.target, _cfgDefaults.target))}</div>
  `;
  const actions = document.createElement("div");
  actions.className = "actions";
  const editBtn = document.createElement("button");
  editBtn.type = "button";
  editBtn.textContent = "Edit";
  editBtn.addEventListener("click", () => openProfileModal(row));
  const delBtn = document.createElement("button");
  delBtn.type = "button";
  delBtn.className = "danger";
  delBtn.textContent = "Remove";
  delBtn.addEventListener("click", () => {
    row.remove();
    updateSectionSummaries();
  });
  actions.appendChild(editBtn);
  actions.appendChild(delBtn);
  row.appendChild(detail);
  row.appendChild(actions);
  return row;
}

function renderProfiles(profiles) {
  const list = document.getElementById("profiles-list");
  list.innerHTML = "";
  if (!profiles.length) {
    const msg = document.createElement("div");
    msg.style.cssText = "color:#666;font-size:12px;font-style:italic;margin-bottom:8px;";
    msg.textContent = "No profiles defined. Searches use rc-jav's config.json defaults.";
    list.appendChild(msg);
    return;
  }
  for (const p of profiles) list.appendChild(buildProfileRow(p));
}

function readProfiles() {
  return [...document.querySelectorAll("#profiles-list .prof-row")]
    .map((row) => cloneProfile(row._profile))
    .filter((profile) => profile.name);
}

let editingProfileRow = null;

function setProfileModalDefaultsNote() {
  const src = _cfgDefaults.source.length ? _cfgDefaults.source.join(", ") : "config.json default_source";
  const tgt = _cfgDefaults.target.length ? _cfgDefaults.target.join(", ") : "config.json default_target";
  document.getElementById("profile-modal-status").textContent = `Empty remote lists inherit source ${src} and target ${tgt}.`;
}

async function openProfileModal(row = null) {
  editingProfileRow = row;
  await fetchRemotes();
  const profile = cloneProfile(row?._profile);
  document.getElementById("profile-modal-title").textContent = row ? "Edit Library Profile" : "Add Library Profile";
  document.getElementById("profile-modal-name").value = profile.name;
  buildRemotePicker(document.getElementById("profile-modal-source"), profile.source);
  buildRemotePicker(document.getElementById("profile-modal-target"), profile.target);
  setProfileModalDefaultsNote();
  openModal("profile-modal");
  document.getElementById("profile-modal-name").focus();
}

function closeProfileModal() {
  editingProfileRow = null;
  closeModal("profile-modal");
}

document.getElementById("add-profile").addEventListener("click", () => openProfileModal());
document.getElementById("profile-modal-save").addEventListener("click", () => {
  const name = document.getElementById("profile-modal-name").value.trim();
  const status = document.getElementById("profile-modal-status");
  if (!name) {
    status.textContent = "Profile name is required.";
    return;
  }
  const profile = {
    name,
    source: readRemoteGroup(document.getElementById("profile-modal-source")),
    target: readRemoteGroup(document.getElementById("profile-modal-target")),
  };
  const list = document.getElementById("profiles-list");
  if (editingProfileRow) {
    editingProfileRow.replaceWith(buildProfileRow(profile));
  } else {
    list.querySelector("div[style*='italic']")?.remove();
    list.appendChild(buildProfileRow(profile));
  }
  closeProfileModal();
  updateSectionSummaries();
});
for (const id of ["profile-modal-close", "profile-modal-cancel"]) {
  document.getElementById(id).addEventListener("click", closeProfileModal);
}
document.getElementById("profile-modal").addEventListener("click", (event) => {
  if (event.target.id === "profile-modal") closeProfileModal();
});

// ---------- paths ----------

document.getElementById("clear-rcjav-path").addEventListener("click", () => {
  document.getElementById("rcjavPath").value = "";
  document.getElementById("path-check-output").textContent = "using host default";
  updateSectionSummaries();
});

document.getElementById("check-rcjav-path").addEventListener("click", async () => {
  const out = document.getElementById("path-check-output");
  out.textContent = "checking...";
  chrome.runtime.sendMessage({ type: "ping-host", rcjavPath: document.getElementById("rcjavPath").value.trim() }, (r) => {
    if (chrome.runtime.lastError) {
      out.textContent = chrome.runtime.lastError.message;
      return;
    }
    if (!r || !r.ok) {
      out.textContent = r?.error || "no response";
      return;
    }
    out.textContent = r.rc_jav_exists ? `ok: ${r.rc_jav}` : `not found: ${r.rc_jav}`;
    updateSectionSummaries();
  });
});

(async () => {
  const { optionsActivePane, pendingNativeSetupIssue } = await chrome.storage.local.get(["optionsActivePane", "pendingNativeSetupIssue"]);
  activatePane(optionsActivePane || "triggers");
  await load();
  if (pendingNativeSetupIssue) {
    activatePane("diagnostics");
    await renderNativeMessagingFailure(pendingNativeSetupIssue);
    await chrome.storage.local.remove("pendingNativeSetupIssue");
  }
  refreshActivity();
})();