From 3244686058361c02e5bd188bd00dc8ca34e9f0a1 Mon Sep 17 00:00:00 2001
From: ashilkn <ashilkn99@gmail.com>
Date: Fri, 20 Jun 2025 09:43:30 +0530
Subject: [PATCH] Create GallerySections model for holding data about a gallery

---
 .../lib/models/gallery/gallery_sections.dart  | 61 +++++++++++++++++++
 mobile/lib/ui/viewer/gallery/gallery.dart     |  1 +
 2 files changed, 62 insertions(+)
 create mode 100644 mobile/lib/models/gallery/gallery_sections.dart

diff --git a/mobile/lib/models/gallery/gallery_sections.dart b/mobile/lib/models/gallery/gallery_sections.dart
new file mode 100644
index 0000000000..e17e295001
--- /dev/null
+++ b/mobile/lib/models/gallery/gallery_sections.dart
@@ -0,0 +1,61 @@
+import "dart:core";
+
+import "package:photos/models/file/file.dart";
+import "package:photos/ui/viewer/gallery/component/group/type.dart";
+import "package:uuid/uuid.dart";
+
+class GallerySections {
+  final List<EnteFile> allFiles;
+  final GroupType groupType;
+  final bool sortOrderAsc;
+  GallerySections({
+    required this.allFiles,
+    required this.groupType,
+    this.sortOrderAsc = true,
+  });
+
+  late final List<String> _groupIDs;
+  late final Map<String, List<EnteFile>> _groupIDToFilesMap;
+  late Map<String, GroupHeaderData> _groupIdToheaderDataMap;
+
+  List<String> get groupIDs => _groupIDs;
+  Map<String, List<EnteFile>> get groupIDToFilesMap => _groupIDToFilesMap;
+  Map<String, GroupHeaderData> get groupIdToheaderDataMap =>
+      _groupIdToheaderDataMap;
+
+  final _uuid = const Uuid();
+
+  void init() {
+    List<EnteFile> dailyFiles = [];
+    for (int index = 0; index < allFiles.length; index++) {
+      if (index > 0 &&
+          groupType.areFromSameGroup(allFiles[index - 1], allFiles[index])) {
+        _createNewGroup(dailyFiles);
+        dailyFiles = [];
+      }
+      dailyFiles.add(allFiles[index]);
+    }
+    if (dailyFiles.isNotEmpty) {
+      _createNewGroup(dailyFiles);
+    }
+  }
+
+  void _createNewGroup(
+    List<EnteFile> dailyFiles,
+  ) {
+    final uuid = _uuid.v1();
+    _groupIDs.add(uuid);
+    _groupIDToFilesMap[uuid] = dailyFiles;
+    _groupIdToheaderDataMap[uuid] = GroupHeaderData(
+      title: dailyFiles.first.creationTime!.toString(),
+    );
+  }
+}
+
+class GroupHeaderData {
+  final String title;
+
+  GroupHeaderData({
+    required this.title,
+  });
+}
diff --git a/mobile/lib/ui/viewer/gallery/gallery.dart b/mobile/lib/ui/viewer/gallery/gallery.dart
index 66da74f969..ea33d1b466 100644
--- a/mobile/lib/ui/viewer/gallery/gallery.dart
+++ b/mobile/lib/ui/viewer/gallery/gallery.dart
@@ -379,6 +379,7 @@ class GalleryState extends State<Gallery> {
       sortOrderAsc: _sortOrderAsc,
       inSelectionMode: widget.inSelectionMode,
       type: widget.groupType,
+      // Replace this with the new gallery and use `_allGalleryFiles`
       child: MultipleGroupsGalleryView(
         itemScroller: _itemScroller,
         groupedFiles: currentGroupedFiles,