Pass sort property to gallery

lib/ui/viewer/gallery/collection_page.dart

@@ -74,6 +74,7 @@ class CollectionPage extends StatelessWidget {
       selectedFiles: _selectedFiles,
       initialFiles: initialFiles,
       albumName: c.collection.name,
+      sortOrderAsc: false,
     );
     return Scaffold(
       appBar: PreferredSize(

lib/ui/viewer/gallery/component/gallery_list_view_widget.dart

@@ -31,6 +31,7 @@ class GalleryListView extends StatelessWidget {
   final bool shouldCollateFilesByDay;
   final String logTag;
   final Logger logger;
+  final bool sortOrderAsc;
 
   const GalleryListView({
     required this.hugeListViewKey,
@@ -50,6 +51,7 @@ class GalleryListView extends StatelessWidget {
     required this.shouldCollateFilesByDay,
     required this.logTag,
     required this.logger,
+    required this.sortOrderAsc,
     super.key,
   });
 
@@ -91,6 +93,7 @@ class GalleryListView extends StatelessWidget {
           reloadEvent,
           removalEventTypes,
           asyncLoader,
+          sortOrderAsc,
           selectedFiles,
           tagPrefix,
           Bus.instance

lib/ui/viewer/gallery/component/lazy_loading_gallery.dart

@@ -21,6 +21,7 @@ class LazyLoadingGallery extends StatefulWidget {
   final Stream<FilesUpdatedEvent>? reloadEvent;
   final Set<EventType> removalEventTypes;
   final GalleryLoader asyncLoader;
+  final bool sortOrderAsc;
   final SelectedFiles? selectedFiles;
   final String tag;
   final String? logTag;
@@ -34,6 +35,7 @@ class LazyLoadingGallery extends StatefulWidget {
     this.reloadEvent,
     this.removalEventTypes,
     this.asyncLoader,
+    this.sortOrderAsc,
     this.selectedFiles,
     this.tag,
     this.currentIndexStream,
@@ -112,6 +114,7 @@ class _LazyLoadingGalleryState extends State<LazyLoadingGallery> {
         final result = await widget.asyncLoader(
           dayStartTime.microsecondsSinceEpoch,
           dayStartTime.microsecondsSinceEpoch + microSecondsInDay - 1,
+          asc: widget.sortOrderAsc,
         );
         if (mounted) {
           setState(() {

lib/ui/viewer/gallery/gallery.dart

@@ -42,6 +42,7 @@ class Gallery extends StatefulWidget {
   final Widget loadingWidget;
   final bool disableScroll;
   final bool limitSelectionToOne;
+  final bool sortOrderAsc;
 
   const Gallery({
     required this.asyncLoader,
@@ -60,6 +61,7 @@ class Gallery extends StatefulWidget {
     this.loadingWidget = const EnteLoadingWidget(),
     this.disableScroll = false,
     this.limitSelectionToOne = false,
+    this.sortOrderAsc = false,
     Key? key,
   }) : super(key: key);
 
@@ -126,7 +128,7 @@ class _GalleryState extends State<Gallery> {
         );
       }
     }
-    if (widget.initialFiles != null) {
+    if (widget.initialFiles != null && !widget.sortOrderAsc) {
       _onFilesLoaded(widget.initialFiles!);
     }
     _loadFiles(limit: kInitialLoadLimit).then((result) async {
@@ -154,6 +156,7 @@ class _GalleryState extends State<Gallery> {
         galleryLoadStartTime,
         galleryLoadEndTime,
         limit: limit,
+        asc: widget.sortOrderAsc,
       );
       final endTime = DateTime.now().microsecondsSinceEpoch;
       final duration = Duration(microseconds: endTime - startTime);
@@ -213,6 +216,7 @@ class _GalleryState extends State<Gallery> {
       disableScroll: widget.disableScroll,
       emptyState: widget.emptyState,
       asyncLoader: widget.asyncLoader,
+      sortOrderAsc: widget.sortOrderAsc,
       removalEventTypes: widget.removalEventTypes,
       tagPrefix: widget.tagPrefix,
       scrollBottomSafeArea: widget.scrollBottomSafeArea,
@@ -244,8 +248,13 @@ class _GalleryState extends State<Gallery> {
     if (dailyFiles.isNotEmpty) {
       collatedFiles.add(dailyFiles);
     }
-    collatedFiles
+    if (widget.sortOrderAsc) {
-        .sort((a, b) => b[0].creationTime!.compareTo(a[0].creationTime!));
+      collatedFiles
+          .sort((a, b) => a[0].creationTime!.compareTo(b[0].creationTime!));
+    } else {
+      collatedFiles
+          .sort((a, b) => b[0].creationTime!.compareTo(a[0].creationTime!));
+    }
     return collatedFiles;
   }
 }