Add team list and joining

frontend_splatournament_manager/lib/providers/team_provider.dart

@@ -6,6 +6,8 @@ class TeamProvider extends ChangeNotifier {
   final TeamService _teamService = TeamService();
 
   List<Team> _teams = [];
+  Future<List<Team>>? _initialLoadFuture;
+
   List<Team> get teams => _teams;
 
   Future<List<Team>> fetchAllTeams() async {
@@ -14,6 +16,16 @@ class TeamProvider extends ChangeNotifier {
     return _teams;
   }
 
+  Future<List<Team>> ensureTeamsLoaded() {
+    _initialLoadFuture ??= fetchAllTeams();
+    return _initialLoadFuture!;
+  }
+
+  Future<List<Team>> refreshTeams() {
+    _initialLoadFuture = fetchAllTeams();
+    return _initialLoadFuture!;
+  }
+
   Future<Team> createTeam({
     required String name,
     required String tag,
@@ -36,7 +48,7 @@ class TeamProvider extends ChangeNotifier {
     String? description,
   }) async {
     await _teamService.updateTeam(id, name: name, tag: tag, description: description);
-    await fetchAllTeams();
+    await refreshTeams();
   }
 
   Future<void> deleteTeam(int id) async {
@@ -58,5 +70,23 @@ class TeamProvider extends ChangeNotifier {
     await _teamService.removeTeamFromTournament(tournamentId, teamId);
     notifyListeners();
   }
+
+  Future<List<Team>> getUserTeams() {
+    return _teamService.getUserTeams();
+  }
+
+  Future<void> joinTeam(int teamId) async {
+    await _teamService.joinTeam(teamId);
+    notifyListeners();
+  }
+
+  Future<void> leaveTeam(int teamId) async {
+    await _teamService.leaveTeam(teamId);
+    notifyListeners();
+  }
+
+  Future<List<Map<String, dynamic>>> getTeamMembers(int teamId) {
+    return _teamService.getTeamMembers(teamId);
+  }
 }