Show a notification after a successful update

Allows access to the github changelog

osu.Desktop/Overlays/VersionManager.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
+using System.Diagnostics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -19,6 +20,7 @@ using OpenTK.Graphics;
 using System.Net.Http;
 using osu.Framework.Logging;
 using osu.Game;
+using osu.Game.Configuration;
 
 namespace osu.Desktop.Overlays
 {
@@ -26,18 +28,24 @@ namespace osu.Desktop.Overlays
     {
         private UpdateManager updateManager;
         private NotificationOverlay notificationOverlay;
+        private OsuConfigManager config;
+        private OsuGameBase game;
 
         public override bool HandleInput => false;
 
         [BackgroundDependencyLoader]
-        private void load(NotificationOverlay notification, OsuColour colours, TextureStore textures, OsuGameBase game)
+        private void load(NotificationOverlay notification, OsuColour colours, TextureStore textures, OsuGameBase game, OsuConfigManager config)
         {
             notificationOverlay = notification;
+            this.config = config;
+            this.game = game;
 
             AutoSizeAxes = Axes.Both;
             Anchor = Anchor.BottomCentre;
             Origin = Anchor.BottomCentre;
+
             Alpha = 0;
+            State = Visibility.Hidden;
 
             Children = new Drawable[]
             {
@@ -91,6 +99,44 @@ namespace osu.Desktop.Overlays
                 checkForUpdateAsync();
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            State = Visibility.Visible;
+
+            var version = game.Version;
+            var lastVersion = config.Get<string>(OsuSetting.Version);
+            if (char.IsNumber(version[0]) && version != lastVersion)
+            {
+                config.Set(OsuSetting.Version, version);
+
+                // only show a notification if we've previously saved a version to the config file (ie. not the first run).
+                if (!string.IsNullOrEmpty(lastVersion))
+                    Scheduler.AddDelayed(() => notificationOverlay.Post(new UpdateCompleteNotification(version)), 5000);
+            }
+        }
+
+        private class UpdateCompleteNotification : SimpleNotification
+        {
+            public UpdateCompleteNotification(string version)
+            {
+                Text = $"You are now running osu!lazer {version}.\nClick to see what's new!";
+                Icon = FontAwesome.fa_check_square;
+                Activated = delegate
+                {
+                    Process.Start($"https://github.com/ppy/osu/releases/tag/v{version}");
+                    return true;
+                };
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OsuColour colours)
+            {
+                IconBackgound.Colour = colours.BlueDark;
+            }
+        }
+
         protected override void Dispose(bool isDisposing)
         {
             base.Dispose(isDisposing);

osu.Game/Configuration/OsuConfigManager.cs

@@ -70,6 +70,8 @@ namespace osu.Game.Configuration
 
             // Update
             Set(OsuSetting.ReleaseStream, ReleaseStream.Lazer);
+
+            Set(OsuSetting.Version, string.Empty);
         }
 
         public OsuConfigManager(Storage storage) : base(storage)
@@ -106,6 +108,7 @@ namespace osu.Game.Configuration
         SnakingInSliders,
         SnakingOutSliders,
         ShowFpsDisplay,
-        ChatDisplayHeight
+        ChatDisplayHeight,
+        Version
     }
 }