feat(share): download-all action on share pages (#3397)

Adds a "Download all" entry to the share page's more-actions menu. It
walks every page of the listing (the visible list is only the first
page) and feeds the whole set into the existing multi-download flow.
Gated on the parent navigator's download_file capability, so
preview-only and upload-only shares do not offer it.

Authored By: TDvorak <info@tdvorak.dev>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

frontend/public/locales/en-US/application.json

@@ -470,7 +470,8 @@
     "ftsStatus": "Full-text index",
     "ftsIndexed": "Indexed",
     "ftsNotIndexed": "Not indexed",
-    "lineEnding": "Line ending"
+    "lineEnding": "Line ending",
+    "downloadAll": "Download all"
   },
   "modals": {
     "includePasswordInShareLink": "Include password in share link",

frontend/public/locales/zh-CN/application.json

@@ -470,7 +470,8 @@
     "ftsStatus": "全文索引",
     "ftsIndexed": "已索引",
     "ftsNotIndexed": "未索引",
-    "lineEnding": "换行符"
+    "lineEnding": "换行符",
+    "downloadAll": "全部下载"
   },
   "modals": {
     "includePasswordInShareLink": "在链接中包含密码",

frontend/src/component/FileManager/TopBar/MoreActionMenu.tsx

@@ -4,15 +4,19 @@ import { useCallback, useContext } from "react";
 import { useTranslation } from "react-i18next";
 import { clearSelected } from "../../../redux/fileManagerSlice.ts";
 import { useAppDispatch, useAppSelector } from "../../../redux/hooks.ts";
+import { NavigatorCapability } from "../../../api/explorer.ts";
+import { downloadAll } from "../../../redux/thunks/download.ts";
 import { createShareShortcut, isMacbook } from "../../../redux/thunks/file.ts";
 import { inverseSelection, pinCurrentView, refreshFileList, selectAll } from "../../../redux/thunks/filemanager.ts";
 import SessionManager from "../../../session";
+import Boolset from "../../../util/boolset.ts";
 import { Filesystem } from "../../../util/uri.ts";
 import { KeyIndicator } from "../../Frame/NavBar/SearchBar.tsx";
 import ArrowSync from "../../Icons/ArrowSync.tsx";
 import Border from "../../Icons/Border.tsx";
 import BorderAll from "../../Icons/BorderAll.tsx";
 import BorderInside from "../../Icons/BorderInside.tsx";
+import CloudDownloadOutlined from "../../Icons/CloudDownloadOutlined.tsx";
 import FolderLink from "../../Icons/FolderLink.tsx";
 import PinOutlined from "../../Icons/PinOutlined.tsx";
 import { DenseDivider, SquareMenu, SquareMenuItem } from "../ContextMenu/ContextMenu.tsx";
@@ -22,6 +26,8 @@ const MoreActionMenu = ({ onClose, ...rest }: MenuProps) => {
   const { t } = useTranslation();
   const fmIndex = useContext(FmIndexContext);
   const fs = useAppSelector((state) => state.fileManager[fmIndex].current_fs);
+  const parentCapability = useAppSelector((state) => state.fileManager[fmIndex].list?.parent?.capability);
+  const canDownloadAll = new Boolset(parentCapability).enabled(NavigatorCapability.download_file);
   const dispatch = useAppDispatch();
   const isLogin = !!SessionManager.currentLoginOrNull();
   const theme = useTheme();
@@ -62,6 +68,11 @@ const MoreActionMenu = ({ onClose, ...rest }: MenuProps) => {
     dispatch(refreshFileList(fmIndex));
   }, [dispatch, onClose, fmIndex]);
 
+  const onDownloadAllClicked = useCallback(() => {
+    onClose && onClose({}, "escapeKeyDown");
+    dispatch(downloadAll(fmIndex));
+  }, [dispatch, onClose, fmIndex]);
+
   return (
     <SquareMenu
       MenuListProps={{
@@ -104,6 +115,14 @@ const MoreActionMenu = ({ onClose, ...rest }: MenuProps) => {
           <ListItemText>{t("application:fileManager.saveShortcut")}</ListItemText>
         </SquareMenuItem>
       )}
+      {fs == Filesystem.share && canDownloadAll && (
+        <SquareMenuItem onClick={onDownloadAllClicked}>
+          <ListItemIcon>
+            <CloudDownloadOutlined fontSize="small" />
+          </ListItemIcon>
+          <ListItemText>{t("application:fileManager.downloadAll")}</ListItemText>
+        </SquareMenuItem>
+      )}
       {isLogin && <DenseDivider />}
       <SquareMenuItem onClick={onSelectAllClicked}>
         <ListItemIcon>

frontend/src/redux/thunks/download.ts

@@ -2,8 +2,8 @@ import dayjs from "dayjs";
 import i18next from "i18next";
 import { closeSnackbar, enqueueSnackbar } from "notistack";
 import streamSaver from "streamsaver";
-import { getFileEntityUrl } from "../../api/api.ts";
+import { getFileEntityUrl, getFileList } from "../../api/api.ts";
-import { FileResponse, FileType, Metadata } from "../../api/explorer.ts";
+import { FileResponse, FileType, ListResponse, Metadata } from "../../api/explorer.ts";
 import { GroupPermission } from "../../api/user.ts";
 import {
   DefaultCloseAction,
@@ -51,6 +51,32 @@ export function downloadFiles(index: number, files: FileResponse[]): AppThunk {
   };
 }
 
+// downloadAll fetches every page of the current directory listing and
+// downloads the whole set — the visible list may be only the first page.
+export function downloadAll(index: number): AppThunk {
+  return async (dispatch, getState) => {
+    const path = getState().fileManager[index]?.path;
+    if (!path) {
+      return;
+    }
+
+    const files: FileResponse[] = [];
+    let token: string | undefined = undefined;
+    do {
+      const res: ListResponse = await dispatch(
+        getFileList({ uri: path, next_page_token: token, page_size: 1000 }),
+      );
+      files.push(...(res.files ?? []));
+      token = res.pagination?.next_token;
+    } while (token);
+
+    if (files.length == 0) {
+      return;
+    }
+    await dispatch(downloadFiles(index, files));
+  };
+}
+
 export function downloadMultipleFiles(files: FileResponse[]): AppThunk {
   return async (dispatch, _getState) => {
     // Prepare download options