feat(context-menu): add dynamic quick actions and options

- Parent menu now has submenu with "All" and top 4 file-type actions
- Actions honor new Options: default action (download/copy) and include metadata in All
- Build submenu on open by collecting links; exclude meta from top-types
- Handle actions: copy to clipboard or send to aria2 using saved settings

src/background/index.js

@@ -1,5 +1,102 @@
 // In MV2 background, aria2 helpers are exposed on globalThis by src/lib/aria2-bg.js
 
+const DYNAMIC_PREFIX = 'aolg-act-';
+let dynamicMenuIds = [];
+const dynamicActions = new Map(); // id -> { kind: 'all'|'type', type?: string }
+
+function parseIdentifierFromUrl(url) {
+  try {
+    const u = new URL(url);
+    const parts = u.pathname.split('/').filter(Boolean);
+    const idx = parts.indexOf('download');
+    if (idx >= 0 && parts[idx + 1]) return parts[idx + 1];
+  } catch (_) {}
+  return '';
+}
+
+function isMeta(item, identifier) {
+  const name = String(item?.name || '');
+  if (!name) return false;
+  if (name === '__ia_thumb.jpg') return true;
+  if (identifier && name.startsWith(identifier + '_')) return true;
+  return false;
+}
+
+async function getPrefs() {
+  const { prefs } = await browser.storage.local.get('prefs');
+  return {
+    defaultAction: prefs?.defaultAction || 'download',
+    allIncludeMeta: !!prefs?.allIncludeMeta,
+  };
+}
+
+async function getAria2() {
+  const { aria2 } = await browser.storage.local.get('aria2');
+  return { endpoint: aria2?.endpoint || '', secret: aria2?.secret || '' };
+}
+
+function computeTopTypes(items, identifier, limit = 4) {
+  const counts = new Map();
+  for (const it of items || []) {
+    if (isMeta(it, identifier)) continue;
+    const t = (it.type || '').toLowerCase();
+    if (!t) continue;
+    counts.set(t, (counts.get(t) || 0) + 1);
+  }
+  return Array.from(counts.entries())
+    .sort((a, b) => b[1] - a[1])
+    .slice(0, limit)
+    .map(([type, count]) => ({ type, count }));
+}
+
+async function rebuildContextSubmenu(tab) {
+  if (!tab?.id) return;
+  // Clear previous dynamic children
+  for (const id of dynamicMenuIds) {
+    try { await browser.contextMenus.remove(id); } catch (_) {}
+    dynamicActions.delete(id);
+  }
+  dynamicMenuIds = [];
+
+  let items = [];
+  try { items = await collectFromTab(tab.id); } catch (_) { items = []; }
+  const identifier = parseIdentifierFromUrl(tab.url || '');
+  const { defaultAction, allIncludeMeta } = await getPrefs();
+  const verb = defaultAction === 'copy' ? 'Copy' : 'Download';
+
+  const top = computeTopTypes(items, identifier, 4);
+
+  // All action
+  const allId = DYNAMIC_PREFIX + 'all';
+  try {
+    await browser.contextMenus.create({
+      id: allId,
+      title: `${verb} All`,
+      parentId: 'aolg-collect',
+      contexts: ['page']
+    });
+    dynamicMenuIds.push(allId);
+    dynamicActions.set(allId, { kind: 'all' });
+  } catch (_) {}
+
+  // Type-specific actions
+  for (const { type, count } of top) {
+    const id = `${DYNAMIC_PREFIX}type:${type}`;
+    try {
+      await browser.contextMenus.create({
+        id,
+        title: `${verb} All ${type} (${count})`,
+        parentId: 'aolg-collect',
+        contexts: ['page']
+      });
+      dynamicMenuIds.push(id);
+      dynamicActions.set(id, { kind: 'type', type });
+    } catch (_) {}
+  }
+
+  try { await browser.contextMenus.refresh(); } catch (_) {}
+}
+
 browser.runtime.onMessage.addListener(async (msg, sender) => {
   if (!msg || !msg.type) return;
 
@@ -56,7 +153,7 @@ browser.runtime.onInstalled.addListener(() => {
   try {
     browser.contextMenus.create({
       id: 'aolg-collect',
-      title: 'Collect archive.org links',
+      title: 'Collect links…',
       contexts: ['page'],
       documentUrlPatterns: ['https://archive.org/download/*']
     });
@@ -65,6 +162,11 @@ browser.runtime.onInstalled.addListener(() => {
   }
 });
 
+browser.contextMenus.onShown.addListener(async (info, tab) => {
+  if (!tab?.url || !/^https:\/\/archive\.org\/download\//.test(tab.url)) return;
+  await rebuildContextSubmenu(tab);
+});
+
 browser.contextMenus.onClicked.addListener(async (info, tab) => {
   if (info.menuItemId !== 'aolg-collect' || !tab?.id) return;
   try {
@@ -82,3 +184,38 @@ browser.contextMenus.onClicked.addListener(async (info, tab) => {
     console.warn('Context menu collection failed:', e);
   }
 });
+
+browser.contextMenus.onClicked.addListener(async (info, tab) => {
+  const action = dynamicActions.get(String(info.menuItemId));
+  if (!action || !tab?.id) return;
+  try {
+    const { defaultAction, allIncludeMeta } = await getPrefs();
+    const identifier = parseIdentifierFromUrl(tab.url || '');
+    const items = await collectFromTab(tab.id);
+    let selected = items || [];
+    if (action.kind === 'type') {
+      selected = selected.filter(it => (it.type || '').toLowerCase() === String(action.type || '').toLowerCase());
+    } else {
+      if (!allIncludeMeta) selected = selected.filter(it => !isMeta(it, identifier));
+    }
+    const uris = selected.map(i => i.url);
+    const count = uris.length;
+    if (count === 0) return;
+
+    if (defaultAction === 'copy') {
+      try { await navigator.clipboard.writeText(uris.join('\n')); } catch (e) { console.warn('clipboard write failed', e); }
+      try { await browser.browserAction.setBadgeBackgroundColor({ color: '#10b981' }); } catch (e) {}
+      try { await browser.browserAction.setBadgeText({ text: String(count) }); } catch (e) {}
+      try { await browser.browserAction.setTitle({ title: `Copied ${count} link(s)` }); } catch (e) {}
+    } else {
+      const { endpoint, secret } = await getAria2();
+      if (!endpoint) { console.warn('aria2 endpoint not set'); return; }
+      try { await globalThis.addUrisBatch({ endpoint, secret, uris }); } catch (e) { console.warn('aria2 send failed', e); }
+      try { await browser.browserAction.setBadgeBackgroundColor({ color: '#3b82f6' }); } catch (e) {}
+      try { await browser.browserAction.setBadgeText({ text: String(count) }); } catch (e) {}
+      try { await browser.browserAction.setTitle({ title: `Sent ${count} link(s) to aria2` }); } catch (e) {}
+    }
+  } catch (e) {
+    console.warn('Quick action failed:', e);
+  }
+});