Add tournament switching in the UI

osu.Game.Tournament/IO/TournamentStorage.cs

@@ -1,10 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Framework.Bindables;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
 using osu.Game.IO;
 using System.IO;
+using System.Collections.Generic;
 using osu.Game.Tournament.Configuration;
 
 namespace osu.Game.Tournament.IO
@@ -13,12 +15,15 @@ namespace osu.Game.Tournament.IO
     {
         private const string default_tournament = "default";
         private readonly Storage storage;
+        private readonly Storage allTournaments;
         private readonly TournamentStorageManager storageConfig;
+        public readonly Bindable<string> CurrentTournament;
 
         public TournamentStorage(Storage storage)
             : base(storage.GetStorageForDirectory("tournaments"), string.Empty)
         {
             this.storage = storage;
+            allTournaments = UnderlyingStorage;
 
             storageConfig = new TournamentStorageManager(storage);
 
@@ -29,9 +34,22 @@ namespace osu.Game.Tournament.IO
             else
                 Migrate(UnderlyingStorage.GetStorageForDirectory(default_tournament));
 
+            CurrentTournament = new Bindable<string>(storageConfig.Get<string>(StorageConfig.CurrentTournament));
             Logger.Log("Using tournament storage: " + GetFullPath(string.Empty));
+
+            CurrentTournament.BindValueChanged(updateTournament, false);
         }
 
+        private void updateTournament(ValueChangedEvent<string> newTournament)
+        {
+            ChangeTargetStorage(allTournaments.GetStorageForDirectory(newTournament.NewValue));
+            Logger.Log("Changing tournament storage: " + GetFullPath(string.Empty));
+            storageConfig.Set(StorageConfig.CurrentTournament, newTournament.NewValue);
+            storageConfig.Save();
+        }
+
+        public IEnumerable<string> ListTournaments() => allTournaments.GetDirectories(string.Empty);
+
         public override void Migrate(Storage newStorage)
         {
             // this migration only happens once on moving to the per-tournament storage system.

osu.Game.Tournament/Screens/SetupScreen.cs

@@ -9,8 +9,10 @@ using osu.Framework.Bindables;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Platform;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Tournament.IO;
 using osu.Game.Online.API;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
@@ -40,6 +42,9 @@ namespace osu.Game.Tournament.Screens
         [Resolved]
         private RulesetStore rulesets { get; set; }
 
+        [Resolved]
+        private Storage storage { get; set; }
+
         [Resolved(canBeNull: true)]
         private TournamentSceneManager sceneManager { get; set; }
 
@@ -70,6 +75,7 @@ namespace osu.Game.Tournament.Screens
         private void reload()
         {
             var fileBasedIpc = ipc as FileBasedIPC;
+            var tourneyStorage = storage as TournamentStorage;
             fillFlow.Children = new Drawable[]
             {
                 new ActionableInfo
@@ -111,6 +117,13 @@ namespace osu.Game.Tournament.Screens
                     Items = rulesets.AvailableRulesets,
                     Current = LadderInfo.Ruleset,
                 },
+                new LabelledDropdown<string>
+                {
+                    Label = "Current tournament",
+                    Description = "Changes the background videos and bracket to match the selected tournament. This requires a restart after selecting to apply changes.",
+                    Items = tourneyStorage?.ListTournaments(),
+                    Current = tourneyStorage?.CurrentTournament,
+                },
                 resolution = new ResolutionSelector
                 {
                     Label = "Stream area resolution",