remove futurebuilder from groups view and refactor

lib/presentation/views/main_menu/group_view/groups_view.dart

@@ -19,15 +19,15 @@ class GroupsView extends StatefulWidget {
 }
 
 class _GroupsViewState extends State<GroupsView> {
-  late Future<List<Group>> _allGroupsFuture;
   late final AppDatabase db;
+  late List<Group> loadedGroups;
+  bool isLoading = true;
 
-  final player = Player(name: 'Skeleton Player');
-  late final List<Group> skeletonData = List.filled(
+  List<Group> groups = List.filled(
     7,
     Group(
-      name: 'Skeleton Match',
-      members: [player, player, player, player, player, player],
+      name: 'Skeleton Group',
+      members: List.filled(6, Player(name: 'Skeleton Player')),
     ),
   );
 
@@ -35,10 +35,17 @@ class _GroupsViewState extends State<GroupsView> {
   void initState() {
     super.initState();
     db = Provider.of<AppDatabase>(context, listen: false);
-    _allGroupsFuture = Future.wait([
+    Future.wait([
       db.groupDao.getAllGroups(),
       Future.delayed(minimumSkeletonDuration),
-    ]).then((results) => results[0] as List<Group>);
+    ]).then((results) {
+      loadedGroups = results[0] as List<Group>;
+      setState(() {
+        groups = loadedGroups
+          ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
+      });
+      isLoading = false;
+    });
   }
 
   @override
@@ -48,36 +55,17 @@ class _GroupsViewState extends State<GroupsView> {
       body: Stack(
         alignment: Alignment.center,
         children: [
-          FutureBuilder<List<Group>>(
-            future: _allGroupsFuture,
-            builder:
-                (BuildContext context, AsyncSnapshot<List<Group>> snapshot) {
-                  if (snapshot.hasError) {
-                    return const Center(
-                      child: TopCenteredMessage(
-                        icon: Icons.report,
-                        title: 'Error',
-                        message: 'Group data couldn\'t\nbe loaded',
-                      ),
-                    );
-                  }
-                  if (snapshot.connectionState == ConnectionState.done &&
-                      (!snapshot.hasData || snapshot.data!.isEmpty)) {
-                    return const Center(
+          AppSkeleton(
+            enabled: isLoading,
+            child: Visibility(
+              visible: groups.isNotEmpty,
+              replacement: const Center(
                 child: TopCenteredMessage(
                   icon: Icons.info,
                   title: 'Info',
                   message: 'No groups created yet',
                 ),
-                    );
-                  }
-                  final bool isLoading =
-                      snapshot.connectionState == ConnectionState.waiting;
-                  final List<Group> groups =
-                      isLoading ? skeletonData : (snapshot.data ?? [])
-                        ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
-                  return AppSkeleton(
-                    enabled: isLoading,
+              ),
               child: ListView.builder(
                 padding: const EdgeInsets.only(bottom: 85),
                 itemCount: groups.length + 1,
@@ -90,8 +78,7 @@ class _GroupsViewState extends State<GroupsView> {
                   return GroupTile(group: groups[index]);
                 },
               ),
-                  );
-                },
+            ),
           ),
           Positioned(
             bottom: MediaQuery.paddingOf(context).bottom,
@@ -108,7 +95,7 @@ class _GroupsViewState extends State<GroupsView> {
                   ),
                 );
                 setState(() {
-                  _allGroupsFuture = db.groupDao.getAllGroups();
+                  //_allGroupsFuture = db.groupDao.getAllGroups();
                 });
               },
             ),