Fixed error in getAllGames method

lib/data/dao/game_dao.dart

@@ -15,11 +15,23 @@ class GameDao extends DatabaseAccessor<AppDatabase> with _$GameDaoMixin {
   Future<List<Game>> getAllGames() async {
     final query = select(gameTable);
     final result = await query.get();
-    return result
-        .map(
-          (row) => Game(id: row.id, name: row.name, createdAt: row.createdAt),
-        )
-        .toList();
+
+    return Future.wait(
+      result.map((row) async {
+        final group = await db.groupGameDao.getGroupByGameId(gameId: row.id);
+        final player = await db.playerGameDao.getPlayersByGameId(
+          gameId: row.id,
+        );
+        return Game(
+          id: row.id,
+          name: row.name,
+          group: group,
+          players: player,
+          createdAt: row.createdAt,
+          winner: row.winnerId,
+        );
+      }),
+    );
   }
 
   /// Retrieves a [Game] by its [gameId].

lib/data/dao/group_game_dao.dart

@@ -23,10 +23,15 @@ class GroupGameDao extends DatabaseAccessor<AppDatabase>
   }
 
   /// Retrieves the [Group] associated with the given [gameId].
-  Future<Group> getGroupByGameId({required String gameId}) async {
+  /// Returns `null` if no group is found.
+  Future<Group?> getGroupByGameId({required String gameId}) async {
     final result = await (select(
       groupGameTable,
-    )..where((g) => g.gameId.equals(gameId))).getSingle();
+    )..where((g) => g.gameId.equals(gameId))).getSingleOrNull();
+
+    if (result == null) {
+      return null;
+    }
 
     final group = await db.groupDao.getGroupById(groupId: result.groupId);
     return group;

lib/data/dao/player_game_dao.dart

@@ -23,19 +23,19 @@ class PlayerGameDao extends DatabaseAccessor<AppDatabase>
   }
 
   /// Retrieves a list of [Player]s associated with the given [gameId].
-  /// Returns an empty list if no players are found.
-  Future<List<Player>> getPlayersByGameId({required String gameId}) async {
+  /// Returns null if no players are found.
+  Future<List<Player>?> getPlayersByGameId({required String gameId}) async {
     final result = await (select(
       playerGameTable,
     )..where((p) => p.gameId.equals(gameId))).get();
 
-    if (result.isEmpty) return <Player>[];
+    if (result.isEmpty) return null;
 
     final futures = result.map(
       (row) => db.playerDao.getPlayerById(playerId: row.playerId),
     );
     final players = await Future.wait(futures);
-    return players.whereType<Player>().toList();
+    return players;
   }
 
   /// Associates a player with a game by inserting a record into the