Manage shares

lib/bloc/list_sharing.dart

@@ -0,0 +1,202 @@
+import 'package:bloc/bloc.dart';
+import 'package:kiwi/kiwi.dart';
+import 'package:logging/logging.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/share.dart';
+import 'package:nc_photos/entity/share/data_source.dart';
+import 'package:nc_photos/event/event.dart';
+import 'package:nc_photos/use_case/find_file.dart';
+
+class ListSharingItem {
+  ListSharingItem(this.share, this.file);
+
+  final Share share;
+  final File file;
+}
+
+abstract class ListSharingBlocEvent {
+  const ListSharingBlocEvent();
+}
+
+class ListSharingBlocQuery extends ListSharingBlocEvent {
+  const ListSharingBlocQuery(this.account);
+
+  @override
+  toString() {
+    return "$runtimeType {"
+        "account: $account, "
+        "}";
+  }
+
+  final Account account;
+}
+
+class _ListSharingBlocShareRemoved extends ListSharingBlocEvent {
+  const _ListSharingBlocShareRemoved(this.share);
+
+  @override
+  toString() {
+    return "$runtimeType {"
+        "share: $share, "
+        "}";
+  }
+
+  final Share share;
+}
+
+abstract class ListSharingBlocState {
+  const ListSharingBlocState(this.account, this.items);
+
+  @override
+  toString() {
+    return "$runtimeType {"
+        "account: $account, "
+        "items: List {length: ${items.length}}, "
+        "}";
+  }
+
+  final Account? account;
+  final List<ListSharingItem> items;
+}
+
+class ListSharingBlocInit extends ListSharingBlocState {
+  ListSharingBlocInit() : super(null, const []);
+}
+
+class ListSharingBlocLoading extends ListSharingBlocState {
+  const ListSharingBlocLoading(Account? account, List<ListSharingItem> items)
+      : super(account, items);
+}
+
+class ListSharingBlocSuccess extends ListSharingBlocState {
+  const ListSharingBlocSuccess(Account? account, List<ListSharingItem> items)
+      : super(account, items);
+
+  ListSharingBlocSuccess copyWith({
+    Account? account,
+    List<ListSharingItem>? items,
+  }) =>
+      ListSharingBlocSuccess(
+        account ?? this.account,
+        items ?? this.items,
+      );
+}
+
+class ListSharingBlocFailure extends ListSharingBlocState {
+  const ListSharingBlocFailure(
+      Account? account, List<ListSharingItem> items, this.exception)
+      : super(account, items);
+
+  @override
+  toString() {
+    return "$runtimeType {"
+        "super: ${super.toString()}, "
+        "exception: $exception, "
+        "}";
+  }
+
+  ListSharingBlocFailure copyWith({
+    Account? account,
+    List<ListSharingItem>? items,
+    dynamic exception,
+  }) =>
+      ListSharingBlocFailure(
+        account ?? this.account,
+        items ?? this.items,
+        exception ?? this.exception,
+      );
+
+  final dynamic exception;
+}
+
+/// List all shares from a given file
+class ListSharingBloc extends Bloc<ListSharingBlocEvent, ListSharingBlocState> {
+  ListSharingBloc() : super(ListSharingBlocInit()) {
+    _shareRemovedListener.begin();
+  }
+
+  static ListSharingBloc of(Account account) {
+    final id =
+        "${account.scheme}://${account.username}@${account.address}?${account.roots.join('&')}";
+    try {
+      _log.fine("[of] Resolving bloc for '$id'");
+      return KiwiContainer().resolve<ListSharingBloc>("ListSharingBloc($id)");
+    } catch (_) {
+      // no created instance for this account, make a new one
+      _log.info("[of] New bloc instance for account: $account");
+      final bloc = ListSharingBloc();
+      KiwiContainer().registerInstance<ListSharingBloc>(bloc,
+          name: "ListSharingBloc($id)");
+      return bloc;
+    }
+  }
+
+  @override
+  mapEventToState(ListSharingBlocEvent event) async* {
+    _log.info("[mapEventToState] $event");
+    if (event is ListSharingBlocQuery) {
+      yield* _onEventQuery(event);
+    } else if (event is _ListSharingBlocShareRemoved) {
+      yield* _onEventShareRemoved(event);
+    }
+  }
+
+  Stream<ListSharingBlocState> _onEventQuery(ListSharingBlocQuery ev) async* {
+    try {
+      yield ListSharingBlocLoading(ev.account, state.items);
+      yield ListSharingBlocSuccess(ev.account, await _query(ev));
+    } catch (e, stackTrace) {
+      _log.severe("[_onEventQuery] Exception while request", e, stackTrace);
+      yield ListSharingBlocFailure(ev.account, state.items, e);
+    }
+  }
+
+  Stream<ListSharingBlocState> _onEventShareRemoved(
+      _ListSharingBlocShareRemoved ev) async* {
+    if (state is! ListSharingBlocSuccess && state is! ListSharingBlocFailure) {
+      return;
+    }
+    final newItems = List.of(state.items)
+        .where((element) => !identical(element.share, ev.share))
+        .toList();
+    // i love hacks :)
+    yield (state as dynamic).copyWith(
+      items: newItems,
+    ) as ListSharingBlocState;
+  }
+
+  void _onShareRemovedEvent(ShareRemovedEvent ev) {
+    add(_ListSharingBlocShareRemoved(ev.share));
+  }
+
+  Future<List<ListSharingItem>> _query(ListSharingBlocQuery ev) async {
+    final shareRepo = ShareRepo(ShareRemoteDataSource());
+    final shares = await shareRepo.listAll(ev.account);
+    final futures = shares.map((e) async {
+      if (!file_util.isSupportedMime(e.mimeType)) {
+        return null;
+      }
+      if (ev.account.roots
+          .every((r) => r.isNotEmpty && !e.path.startsWith("/$r/"))) {
+        // ignore files not under root dirs
+        return null;
+      }
+
+      try {
+        final file = await FindFile()(ev.account, e.itemSource);
+        return ListSharingItem(e, file);
+      } catch (_) {
+        _log.warning("[_query] File not found: ${e.itemSource}");
+        return null;
+      }
+    });
+    return (await Future.wait(futures)).whereType<ListSharingItem>().toList();
+  }
+
+  late final _shareRemovedListener =
+      AppEventListener<ShareRemovedEvent>(_onShareRemovedEvent);
+
+  static final _log = Logger("bloc.list_share.ListSharingBloc");
+}

lib/entity/file_util.dart

@@ -3,8 +3,9 @@ import 'package:nc_photos/api/api_util.dart' as api_util;
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
 
-bool isSupportedFormat(File file) =>
+bool isSupportedMime(String mime) => _supportedFormatMimes.contains(mime);
-    _supportedFormatMimes.contains(file.contentType);
+
+bool isSupportedFormat(File file) => isSupportedMime(file.contentType ?? "");
 
 bool isSupportedImageFormat(File file) =>
     isSupportedFormat(file) && file.contentType?.startsWith("image/") == true;

lib/entity/share.dart

@@ -1,6 +1,7 @@
 import 'package:equatable/equatable.dart';
 import 'package:nc_photos/account.dart';
 import 'package:nc_photos/entity/file.dart';
+import 'package:path/path.dart' as path_util;
 
 enum ShareType {
   user,
@@ -54,11 +55,42 @@ extension ShareTypeExtension on ShareType {
   }
 }
 
+enum ShareItemType {
+  file,
+  folder,
+}
+
+extension ShareItemTypeExtension on ShareItemType {
+  static ShareItemType fromValue(String itemTypeVal) {
+    switch (itemTypeVal) {
+      case "file":
+        return ShareItemType.file;
+      case "folder":
+        return ShareItemType.folder;
+      default:
+        throw ArgumentError("Invalid itemType: $itemTypeVal");
+    }
+  }
+
+  String toValue() {
+    switch (this) {
+      case ShareItemType.file:
+        return "file";
+      case ShareItemType.folder:
+        return "folder";
+    }
+  }
+}
+
 class Share with EquatableMixin {
   Share({
     required this.id,
-    required this.path,
     required this.shareType,
+    required this.stime,
+    required this.path,
+    required this.itemType,
+    required this.mimeType,
+    required this.itemSource,
     required this.shareWith,
     required this.shareWithDisplayName,
     this.url,
@@ -68,8 +100,12 @@ class Share with EquatableMixin {
   toString() {
     return "$runtimeType {"
         "id: $id, "
-        "path: $path, "
         "shareType: $shareType, "
+        "stime: $stime, "
+        "path: $path, "
+        "itemType: $itemType, "
+        "mimeType: $mimeType, "
+        "itemSource: $itemSource, "
         "shareWith: $shareWith, "
         "shareWithDisplayName: $shareWithDisplayName, "
         "url: $url, "
@@ -79,21 +115,34 @@ class Share with EquatableMixin {
   @override
   get props => [
         id,
-        path,
         shareType,
+        stime,
+        path,
+        itemType,
+        mimeType,
+        itemSource,
         shareWith,
         shareWithDisplayName,
         url,
       ];
 
+  // see: https://doc.owncloud.com/server/latest/developer_manual/core/apis/ocs-share-api.html#response-attributes-2
   final String id;
-  final String path;
   final ShareType shareType;
+  final DateTime stime;
+  final String path;
+  final ShareItemType itemType;
+  final String mimeType;
+  final int itemSource;
   final String? shareWith;
   final String shareWithDisplayName;
   final String? url;
 }
 
+extension ShareExtension on Share {
+  String get filename => path_util.basename(path);
+}
+
 class ShareRepo {
   ShareRepo(this.dataSrc);
 
@@ -105,6 +154,9 @@ class ShareRepo {
   Future<List<Share>> listDir(Account account, File dir) =>
       dataSrc.listDir(account, dir);
 
+  /// See [ShareDataSource.listAll]
+  Future<List<Share>> listAll(Account account) => dataSrc.listAll(account);
+
   /// See [ShareDataSource.create]
   Future<Share> create(Account account, File file, String shareWith) =>
       dataSrc.create(account, file, shareWith);
@@ -131,6 +183,9 @@ abstract class ShareDataSource {
   /// List all shares from a given directory
   Future<List<Share>> listDir(Account account, File dir);
 
+  /// List all shares from a given user
+  Future<List<Share>> listAll(Account account);
+
   /// Share a file/folder with a user
   Future<Share> create(Account account, File file, String shareWith);
 

lib/entity/share/data_source.dart

@@ -28,6 +28,13 @@ class ShareRemoteDataSource implements ShareDataSource {
     return _onListResult(response);
   }
 
+  @override
+  listAll(Account account) async {
+    _log.info("[listAll] $account");
+    final response = await Api(account).ocs().filesSharing().shares().get();
+    return _onListResult(response);
+  }
+
   @override
   create(Account account, File file, String shareWith) async {
     _log.info("[create] Share '${file.path}' with '$shareWith'");
@@ -116,10 +123,16 @@ class _ShareParser {
 
   Share parseSingle(JsonObj json) {
     final shareType = ShareTypeExtension.fromValue(json["share_type"]);
+    final itemType = ShareItemTypeExtension.fromValue(json["item_type"]);
     return Share(
       id: json["id"],
-      path: json["path"],
       shareType: shareType,
+      stime:
+          DateTime.fromMillisecondsSinceEpoch(json["stime"] * 1000),
+      path: json["path"],
+      itemType: itemType,
+      mimeType: json["mimetype"],
+      itemSource: json["item_source"],
       // when shared with a password protected link, shareWith somehow contains
       // the password, which doesn't make sense. We set it to null instead
       shareWith: shareType == ShareType.publicLink ? null : json["share_with"],

lib/event/event.dart

@@ -6,6 +6,7 @@ import 'package:logging/logging.dart';
 import 'package:nc_photos/account.dart';
 import 'package:nc_photos/entity/album.dart';
 import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/share.dart';
 import 'package:nc_photos/metadata_task_manager.dart';
 import 'package:nc_photos/pref.dart';
 
@@ -85,6 +86,13 @@ class FileMovedEvent {
   final String destination;
 }
 
+class ShareRemovedEvent {
+  const ShareRemovedEvent(this.account, this.share);
+
+  final Account account;
+  final Share share;
+}
+
 class ThemeChangedEvent {}
 
 class LanguageChangedEvent {}

lib/l10n/app_en.arb

@@ -856,6 +856,36 @@
 		"description": "Create a password protected share link on server and share it"
 	},
 	"shareMethodPasswordLinkDescription": "Create a new password protected link on the server",
+	"collectionSharingLabel": "Sharing",
+	"@collectionSharingLabel": {
+		"description": "List items being shared by the current account"
+	},
+	"fileLastSharedDescription": "Last shared on {date}",
+	"@fileLastSharedDescription": {
+		"description": "The date when this file is last shared. The date string is formatted according to the current locale",
+		"placeholders": {
+			"date": {
+				"example": "Jan 1, 2021"
+			}
+		}
+	},
+	"sharedWithLabel": "Shared with",
+	"@sharedWithLabel": {
+		"description": "A list of users or links where this file is sharing with"
+	},
+	"unshareTooltip": "Unshare",
+	"@unshareTooltip": {
+		"description": "Remove a share"
+	},
+	"unshareSuccessNotification": "Removed share",
+	"@unshareSuccessNotification": {
+		"description": "Removed a share"
+	},
+	"locationLabel": "Location",
+	"@locationLabel": {
+		"description": "Show where the file is located"
+	},
+
 	"errorUnauthenticated": "Unauthenticated access. Please sign-in again if the problem continues",
 	"@errorUnauthenticated": {
 		"description": "Error message when server responds with HTTP401"

lib/l10n/untranslated-messages.txt

@@ -5,7 +5,13 @@
     "settingsAlbumPageTitle",
     "settingsShowDateInAlbumTitle",
     "settingsShowDateInAlbumDescription",
-    "sortOptionManualLabel"
+    "sortOptionManualLabel",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ],
 
   "de": [
@@ -28,7 +34,13 @@
     "shareMethodPublicLinkTitle",
     "shareMethodPublicLinkDescription",
     "shareMethodPasswordLinkTitle",
-    "shareMethodPasswordLinkDescription"
+    "shareMethodPasswordLinkDescription",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ],
 
   "el": [
@@ -106,7 +118,13 @@
     "shareMethodPublicLinkTitle",
     "shareMethodPublicLinkDescription",
     "shareMethodPasswordLinkTitle",
-    "shareMethodPasswordLinkDescription"
+    "shareMethodPasswordLinkDescription",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ],
 
   "es": [
@@ -115,7 +133,13 @@
     "settingsAlbumPageTitle",
     "settingsShowDateInAlbumTitle",
     "settingsShowDateInAlbumDescription",
-    "sortOptionManualLabel"
+    "sortOptionManualLabel",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ],
 
   "fr": [
@@ -173,7 +197,13 @@
     "shareMethodPublicLinkTitle",
     "shareMethodPublicLinkDescription",
     "shareMethodPasswordLinkTitle",
-    "shareMethodPasswordLinkDescription"
+    "shareMethodPasswordLinkDescription",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ],
 
   "ru": [
@@ -204,6 +234,12 @@
     "shareMethodPublicLinkTitle",
     "shareMethodPublicLinkDescription",
     "shareMethodPasswordLinkTitle",
-    "shareMethodPasswordLinkDescription"
+    "shareMethodPasswordLinkDescription",
+    "collectionSharingLabel",
+    "fileLastSharedDescription",
+    "sharedWithLabel",
+    "unshareTooltip",
+    "unshareSuccessNotification",
+    "locationLabel"
   ]
 }

lib/use_case/find_file.dart

@@ -0,0 +1,27 @@
+import 'package:idb_shim/idb_client.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/app_db.dart';
+import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/file_util.dart' as file_util;
+
+class FindFile {
+  /// Find the [File] in the DB by [fileId]
+  Future<File> call(Account account, int fileId) async {
+    return await AppDb.use((db) async {
+      final transaction =
+          db.transaction(AppDb.fileDbStoreName, idbModeReadOnly);
+      final store = transaction.objectStore(AppDb.fileDbStoreName);
+      final index = store.index(AppDbFileDbEntry.indexName);
+      final List dbItems = await index
+          .getAll(AppDbFileDbEntry.toNamespacedFileId(account, fileId));
+
+      // find the one owned by us
+      final dbItem = dbItems.firstWhere((element) {
+        final e = AppDbFileDbEntry.fromJson(element.cast<String, dynamic>());
+        return file_util.getUserDirName(e.file) == account.username;
+      });
+      final dbEntry = AppDbFileDbEntry.fromJson(dbItem.cast<String, dynamic>());
+      return dbEntry.file;
+    });
+  }
+}

lib/use_case/remove_share.dart

@@ -0,0 +1,16 @@
+import 'package:event_bus/event_bus.dart';
+import 'package:kiwi/kiwi.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/entity/share.dart';
+import 'package:nc_photos/event/event.dart';
+
+class RemoveShare {
+  const RemoveShare(this.shareRepo);
+
+  Future<void> call(Account account, Share share) async {
+    await shareRepo.delete(account, share);
+    KiwiContainer().resolve<EventBus>().fire(ShareRemovedEvent(account, share));
+  }
+
+  final ShareRepo shareRepo;
+}

lib/widget/home_albums.dart

@@ -35,6 +35,7 @@ import 'package:nc_photos/widget/pending_albums.dart';
 import 'package:nc_photos/widget/people_browser.dart';
 import 'package:nc_photos/widget/selectable_item_stream_list_mixin.dart';
 import 'package:nc_photos/widget/selection_app_bar.dart';
+import 'package:nc_photos/widget/sharing_browser.dart';
 import 'package:nc_photos/widget/trashbin_browser.dart';
 import 'package:tuple/tuple.dart';
 
@@ -237,6 +238,19 @@ class _HomeAlbumsState extends State<HomeAlbums>
     );
   }
 
+  SelectableItem _buildSharingItem(BuildContext context) {
+    return _ButtonListItem(
+      icon: Icons.share_outlined,
+      label: L10n.global().collectionSharingLabel,
+      onTap: () {
+        if (!isSelectionMode) {
+          Navigator.of(context).pushNamed(SharingBrowser.routeName,
+              arguments: SharingBrowserArguments(widget.account));
+        }
+      },
+    );
+  }
+
   SelectableItem _buildShareItem(BuildContext context) {
     return _ButtonListItem(
       icon: Icons.share_outlined,
@@ -444,6 +458,7 @@ class _HomeAlbumsState extends State<HomeAlbums>
     }).map((e) => e.item2);
     itemStreamListItems = [
       _buildPersonItem(context),
+      _buildSharingItem(context),
       if (Lab().enableSharedAlbum) _buildShareItem(context),
       _buildArchiveItem(context),
       _buildTrashbinItem(context),

lib/widget/my_app.dart

@@ -22,6 +22,8 @@ import 'package:nc_photos/widget/person_browser.dart';
 import 'package:nc_photos/widget/root_picker.dart';
 import 'package:nc_photos/widget/settings.dart';
 import 'package:nc_photos/widget/setup.dart';
+import 'package:nc_photos/widget/shared_file_viewer.dart';
+import 'package:nc_photos/widget/sharing_browser.dart';
 import 'package:nc_photos/widget/sign_in.dart';
 import 'package:nc_photos/widget/slideshow_viewer.dart';
 import 'package:nc_photos/widget/splash.dart';
@@ -145,6 +147,8 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
     route ??= _handlePeopleBrowserRoute(settings);
     route ??= _handlePersonBrowserRoute(settings);
     route ??= _handleSlideshowViewerRoute(settings);
+    route ??= _handleSharingBrowserRoute(settings);
+    route ??= _handleSharedFileViewerRoute(settings);
     return route;
   }
 
@@ -376,6 +380,34 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
     return null;
   }
 
+  Route<dynamic>? _handleSharingBrowserRoute(RouteSettings settings) {
+    try {
+      if (settings.name == SharingBrowser.routeName &&
+          settings.arguments != null) {
+        final args = settings.arguments as SharingBrowserArguments;
+        return SharingBrowser.buildRoute(args);
+      }
+    } catch (e) {
+      _log.severe(
+          "[_handleSharingBrowserRoute] Failed while handling route", e);
+    }
+    return null;
+  }
+
+  Route<dynamic>? _handleSharedFileViewerRoute(RouteSettings settings) {
+    try {
+      if (settings.name == SharedFileViewer.routeName &&
+          settings.arguments != null) {
+        final args = settings.arguments as SharedFileViewerArguments;
+        return SharedFileViewer.buildRoute(args);
+      }
+    } catch (e) {
+      _log.severe(
+          "[_handleSharedFileViewerRoute] Failed while handling route", e);
+    }
+    return null;
+  }
+
   final _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();
 
   late AppEventListener<ThemeChangedEvent> _themeChangedListener;

lib/widget/shared_file_viewer.dart

@@ -0,0 +1,266 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter/widgets.dart';
+import 'package:intl/intl.dart';
+import 'package:logging/logging.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/api/api.dart';
+import 'package:nc_photos/api/api_util.dart' as api_util;
+import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/cache_manager_util.dart';
+import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/share.dart';
+import 'package:nc_photos/entity/share/data_source.dart';
+import 'package:nc_photos/exception_util.dart' as exception_util;
+import 'package:nc_photos/k.dart' as k;
+import 'package:nc_photos/snack_bar_manager.dart';
+import 'package:nc_photos/theme.dart';
+import 'package:nc_photos/use_case/remove_share.dart';
+import 'package:path/path.dart' as path;
+
+class SharedFileViewerArguments {
+  SharedFileViewerArguments(this.account, this.file, this.shares);
+
+  final Account account;
+  final File file;
+  final List<Share> shares;
+}
+
+/// Handle shares associated with a [File]
+class SharedFileViewer extends StatefulWidget {
+  static const routeName = "/shared-file-viewer";
+
+  static Route buildRoute(SharedFileViewerArguments args) => MaterialPageRoute(
+        builder: (context) => SharedFileViewer.fromArgs(args),
+      );
+
+  const SharedFileViewer({
+    Key? key,
+    required this.account,
+    required this.file,
+    required this.shares,
+  }) : super(key: key);
+
+  SharedFileViewer.fromArgs(SharedFileViewerArguments args, {Key? key})
+      : this(
+          key: key,
+          account: args.account,
+          file: args.file,
+          shares: args.shares,
+        );
+
+  @override
+  createState() => _SharedFileViewerState();
+
+  final Account account;
+  final File file;
+  final List<Share> shares;
+}
+
+class _SharedFileViewerState extends State<SharedFileViewer> {
+  @override
+  build(BuildContext context) {
+    return AppTheme(
+      child: Scaffold(
+        body: _buildContent(context),
+      ),
+    );
+  }
+
+  Widget _buildContent(BuildContext context) {
+    final previewUrl = api_util.getFilePreviewUrl(
+      widget.account,
+      widget.file,
+      width: k.photoLargeSize,
+      height: k.photoLargeSize,
+      a: true,
+    );
+    return CustomScrollView(
+      slivers: [
+        SliverAppBar(
+          title: Text(path.withoutExtension(widget.file.filename)),
+          pinned: true,
+        ),
+        SliverToBoxAdapter(
+          child: SizedBox(
+            height: 256,
+            child: FittedBox(
+              alignment: Alignment.center,
+              fit: BoxFit.cover,
+              clipBehavior: Clip.hardEdge,
+              child: CachedNetworkImage(
+                cacheManager: CoverCacheManager.inst,
+                imageUrl: previewUrl,
+                httpHeaders: {
+                  "Authorization":
+                      Api.getAuthorizationHeaderValue(widget.account),
+                },
+                fadeInDuration: const Duration(),
+                filterQuality: FilterQuality.high,
+                errorWidget: (context, url, error) {
+                  // just leave it empty
+                  return Container();
+                },
+                imageRenderMethodForWeb: ImageRenderMethodForWeb.HttpGet,
+              ),
+            ),
+          ),
+        ),
+        SliverToBoxAdapter(
+          child: Padding(
+            padding: const EdgeInsets.all(16),
+            child: Text(
+              L10n.global().locationLabel,
+              style: TextStyle(
+                color: Theme.of(context).colorScheme.primary,
+              ),
+            ),
+          ),
+        ),
+        SliverToBoxAdapter(
+          child: ListTile(
+            title: Text(widget.file.strippedPath),
+          ),
+        ),
+        SliverToBoxAdapter(
+          child: Padding(
+            padding: const EdgeInsets.all(16),
+            child: Text(
+              L10n.global().sharedWithLabel,
+              style: TextStyle(
+                color: Theme.of(context).colorScheme.primary,
+              ),
+            ),
+          ),
+        ),
+        SliverList(
+          delegate: SliverChildBuilderDelegate(
+            (context, index) => _buildShareItem(context, _shares[index]),
+            childCount: _shares.length,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildShareItem(BuildContext context, Share share) {
+    final dateStr = DateFormat(DateFormat.YEAR_ABBR_MONTH_DAY,
+            Localizations.localeOf(context).languageCode)
+        .format(share.stime.toLocal());
+    return ListTile(
+      title: Text(_getShareTitle(share)),
+      subtitle: Text(dateStr),
+      leading: SizedBox(
+        height: double.infinity,
+        child: Icon(_getShareIcon(share)),
+      ),
+      trailing: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          if (share.shareType == ShareType.publicLink)
+            IconButton(
+              onPressed: () => _onItemCopyPressed(share),
+              icon: Tooltip(
+                message: MaterialLocalizations.of(context).copyButtonLabel,
+                child: const Icon(Icons.copy_outlined),
+              ),
+            ),
+          PopupMenuButton<_ItemMenuOption>(
+            tooltip: MaterialLocalizations.of(context).moreButtonTooltip,
+            itemBuilder: (_) => [
+              PopupMenuItem(
+                value: _ItemMenuOption.unshare,
+                child: Text(L10n.global().unshareTooltip),
+              ),
+            ],
+            onSelected: (option) =>
+                _onItemMenuOptionSelected(context, share, option),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Future<void> _onItemCopyPressed(Share share) async {
+    await Clipboard.setData(ClipboardData(text: share.url!));
+    SnackBarManager().showSnackBar(SnackBar(
+      content: Text(L10n.global().linkCopiedNotification),
+      duration: k.snackBarDurationNormal,
+    ));
+  }
+
+  void _onItemMenuOptionSelected(
+      BuildContext context, Share share, _ItemMenuOption option) {
+    switch (option) {
+      case _ItemMenuOption.unshare:
+        _onItemUnsharePressed(context, share);
+        break;
+    }
+  }
+
+  Future<void> _onItemUnsharePressed(BuildContext context, Share share) async {
+    final shareRepo = ShareRepo(ShareRemoteDataSource());
+    try {
+      await RemoveShare(shareRepo)(widget.account, share);
+      SnackBarManager().showSnackBar(SnackBar(
+        content: Text(L10n.global().unshareSuccessNotification),
+        duration: k.snackBarDurationNormal,
+      ));
+      if (_shares.length == 1) {
+        // removing last share
+        Navigator.of(context).pop();
+      } else {
+        setState(() {
+          _shares.remove(share);
+        });
+      }
+    } catch (e, stackTrace) {
+      _log.shout(
+          "[_onItemUnsharePressed] Failed while RemoveShare", e, stackTrace);
+      SnackBarManager().showSnackBar(SnackBar(
+        content: Text(exception_util.toUserString(e)),
+        duration: k.snackBarDurationNormal,
+      ));
+    }
+  }
+
+  IconData? _getShareIcon(Share share) {
+    switch (share.shareType) {
+      case ShareType.user:
+      case ShareType.email:
+      case ShareType.federatedCloudShare:
+        return Icons.person_outlined;
+      case ShareType.group:
+      case ShareType.circle:
+        return Icons.group_outlined;
+      case ShareType.publicLink:
+        return Icons.link_outlined;
+      case ShareType.talk:
+        return Icons.sms_outlined;
+      default:
+        return null;
+    }
+  }
+
+  String _getShareTitle(Share share) {
+    if (share.shareType == ShareType.publicLink) {
+      if (share.url!.startsWith(widget.account.url)) {
+        return share.url!.substring(widget.account.url.length);
+      } else {
+        return share.url!;
+      }
+    } else {
+      return share.shareWithDisplayName;
+    }
+  }
+
+  late final List<Share> _shares = List.of(widget.shares);
+
+  static final _log =
+      Logger("widget.shared_file_viewer._SharedFileViewerState");
+}
+
+enum _ItemMenuOption {
+  unshare,
+}

lib/widget/sharing_browser.dart

@@ -0,0 +1,251 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:intl/intl.dart';
+import 'package:logging/logging.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/api/api.dart';
+import 'package:nc_photos/api/api_util.dart' as api_util;
+import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/bloc/list_sharing.dart';
+import 'package:nc_photos/cache_manager_util.dart';
+import 'package:nc_photos/entity/share.dart';
+import 'package:nc_photos/event/event.dart';
+import 'package:nc_photos/exception_util.dart' as exception_util;
+import 'package:nc_photos/iterable_extension.dart';
+import 'package:nc_photos/k.dart' as k;
+import 'package:nc_photos/snack_bar_manager.dart';
+import 'package:nc_photos/theme.dart';
+import 'package:nc_photos/widget/empty_list_indicator.dart';
+import 'package:nc_photos/widget/shared_file_viewer.dart';
+
+class SharingBrowserArguments {
+  SharingBrowserArguments(this.account);
+
+  final Account account;
+}
+
+/// Show a list of all shares associated with this account
+class SharingBrowser extends StatefulWidget {
+  static const routeName = "/sharing-browser";
+
+  static Route buildRoute(SharingBrowserArguments args) => MaterialPageRoute(
+        builder: (context) => SharingBrowser.fromArgs(args),
+      );
+
+  const SharingBrowser({
+    Key? key,
+    required this.account,
+  }) : super(key: key);
+
+  SharingBrowser.fromArgs(SharingBrowserArguments args, {Key? key})
+      : this(
+          key: key,
+          account: args.account,
+        );
+
+  @override
+  createState() => _SharingBrowserState();
+
+  final Account account;
+}
+
+class _SharingBrowserState extends State<SharingBrowser> {
+  @override
+  initState() {
+    super.initState();
+    _initBloc();
+    _shareRemovedListener.begin();
+  }
+
+  @override
+  dispose() {
+    _shareRemovedListener.end();
+    super.dispose();
+  }
+
+  @override
+  build(BuildContext context) {
+    return AppTheme(
+      child: Scaffold(
+        body: BlocListener<ListSharingBloc, ListSharingBlocState>(
+          bloc: _bloc,
+          listener: (context, state) => _onStateChange(context, state),
+          child: BlocBuilder<ListSharingBloc, ListSharingBlocState>(
+            bloc: _bloc,
+            builder: (context, state) => _buildContent(context, state),
+          ),
+        ),
+      ),
+    );
+  }
+
+  void _initBloc() {
+    if (_bloc.state is ListSharingBlocInit) {
+      _log.info("[_initBloc] Initialize bloc");
+    } else {
+      // process the current state
+      WidgetsBinding.instance!.addPostFrameCallback((_) {
+        setState(() {
+          _onStateChange(context, _bloc.state);
+        });
+      });
+    }
+    _reqQuery();
+  }
+
+  Widget _buildContent(BuildContext context, ListSharingBlocState state) {
+    if ((state is ListSharingBlocSuccess || state is ListSharingBlocFailure) &&
+        state.items.isEmpty) {
+      return _buildEmptyContent(context);
+    } else {
+      return CustomScrollView(
+        slivers: [
+          SliverAppBar(
+            title: Text(L10n.global().collectionSharingLabel),
+            floating: true,
+          ),
+          SliverList(
+            delegate: SliverChildBuilderDelegate(
+              (context, index) => _buildItem(context, _items[index]),
+              childCount: _items.length,
+            ),
+          ),
+        ],
+      );
+    }
+  }
+
+  Widget _buildEmptyContent(BuildContext context) {
+    return Column(
+      children: [
+        AppBar(
+          title: Text(L10n.global().collectionSharingLabel),
+          elevation: 0,
+        ),
+        Expanded(
+          child: EmptyListIndicator(
+            icon: Icons.share_outlined,
+            text: L10n.global().listEmptyText,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildItem(BuildContext context, List<ListSharingItem> shares) {
+    const leadingSize = 56.0;
+    final dateStr = DateFormat(DateFormat.YEAR_ABBR_MONTH_DAY,
+            Localizations.localeOf(context).languageCode)
+        .format(shares.first.share.stime.toLocal());
+    return InkWell(
+      onTap: () {
+        Navigator.of(context).pushNamed(SharedFileViewer.routeName,
+            arguments: SharedFileViewerArguments(
+              widget.account,
+              shares.first.file,
+              shares.map((e) => e.share).toList(),
+            ));
+      },
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Row(
+          crossAxisAlignment: CrossAxisAlignment.center,
+          children: [
+            shares.first.share.itemType == ShareItemType.folder
+                ? const Icon(
+                    Icons.folder_outlined,
+                    size: leadingSize,
+                  )
+                : CachedNetworkImage(
+                    width: leadingSize,
+                    height: leadingSize,
+                    cacheManager: ThumbnailCacheManager.inst,
+                    imageUrl: api_util.getFilePreviewUrl(
+                        widget.account, shares.first.file,
+                        width: k.photoThumbSize, height: k.photoThumbSize),
+                    httpHeaders: {
+                      "Authorization":
+                          Api.getAuthorizationHeaderValue(widget.account),
+                    },
+                    fadeInDuration: const Duration(),
+                    filterQuality: FilterQuality.high,
+                    imageRenderMethodForWeb: ImageRenderMethodForWeb.HttpGet,
+                  ),
+            const SizedBox(width: 16),
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    shares.first.share.filename,
+                    style: Theme.of(context).textTheme.subtitle1,
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                  Text(
+                    L10n.global().fileLastSharedDescription(dateStr),
+                    style: TextStyle(
+                      color: AppTheme.getSecondaryTextColor(context),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+            if (shares.any((element) => element.share.url?.isNotEmpty == true))
+              const Icon(Icons.link)
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _onStateChange(BuildContext context, ListSharingBlocState state) {
+    if (state is ListSharingBlocInit) {
+      _items = [];
+    } else if (state is ListSharingBlocSuccess ||
+        state is ListSharingBlocLoading) {
+      _transformItems(state.items);
+    } else if (state is ListSharingBlocFailure) {
+      _transformItems(state.items);
+      SnackBarManager().showSnackBar(SnackBar(
+        content: Text(exception_util.toUserString(state.exception)),
+        duration: k.snackBarDurationNormal,
+      ));
+    }
+  }
+
+  void _onShareRemovedEvent(ShareRemovedEvent ev) {}
+
+  void _transformItems(List<ListSharingItem> items) {
+    // group shares of the same file
+    final map = <String, List<ListSharingItem>>{};
+    for (final i in items) {
+      map[i.share.path] ??= <ListSharingItem>[];
+      map[i.share.path]!.add(i);
+    }
+    // sort the sub-lists
+    for (final list in map.values) {
+      list.sort((a, b) => b.share.stime.compareTo(a.share.stime));
+    }
+    // then sort the map and convert it to list
+    _items = map.entries
+        .sorted((a, b) =>
+            b.value.first.share.stime.compareTo(a.value.first.share.stime))
+        .map((e) => e.value)
+        .toList();
+  }
+
+  void _reqQuery() {
+    _bloc.add(ListSharingBlocQuery(widget.account));
+  }
+
+  late final _bloc = ListSharingBloc.of(widget.account);
+  late final _shareRemovedListener =
+      AppEventListener<ShareRemovedEvent>(_onShareRemovedEvent);
+
+  var _items = <List<ListSharingItem>>[];
+
+  static final _log = Logger("widget.sharing_browser._SharingBrowserState");
+}