sort room list for unread first then recent

lib/controllers/spaces_controller.dart

@@ -1,3 +1,4 @@
+import "package:collection/collection.dart";
 import "package:fast_immutable_collections/fast_immutable_collections.dart";
 import "package:flutter/material.dart";
 import "package:flutter_riverpod/flutter_riverpod.dart";
@@ -99,7 +100,12 @@ class SpacesController extends Notifier<IList<Space>> {
         .toIList();
 
     return <Space>[
-      Space(id: "home", title: "Home", icon: Icons.home, children: homeRooms),
+          Space(
+            id: "home",
+            title: "Home",
+            icon: Icons.home,
+            children: homeRooms,
+          ),
           Space(
             id: "dms",
             title: "Direct Messages",
@@ -107,7 +113,24 @@ class SpacesController extends Notifier<IList<Space>> {
             children: dmRooms,
           ),
           ...topLevelSpacesList,
-    ].toIList();
+        ]
+        .map(
+          (space) => space.copyWith(
+            children: space.children
+                .sortedBy(
+                  (element) =>
+                      element
+                          .metadata
+                          ?.sortingTimestamp
+                          .millisecondsSinceEpoch ??
+                      0,
+                )
+                .sortedBy((room) => room.metadata?.unreadMessages ?? 0)
+                .reversed
+                .toIList(),
+          ),
+        )
+        .toIList();
   }
 
   static final provider = NotifierProvider<SpacesController, IList<Space>>(