Re-namespace into song select

osu.Game/Screens/Select/Carousel/TopLocalRank.cs

@@ -0,0 +1,90 @@
+// 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 System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Threading;
+using osu.Game.Beatmaps;
+using osu.Game.Online.API;
+using osu.Game.Online.Leaderboards;
+using osu.Game.Rulesets;
+using osu.Game.Scoring;
+
+namespace osu.Game.Screens.Select.Carousel
+{
+    public class TopLocalRank : UpdateableRank
+    {
+        private readonly BeatmapInfo beatmap;
+
+        [Resolved]
+        private ScoreManager scores { get; set; }
+
+        [Resolved]
+        private IBindable<RulesetInfo> ruleset { get; set; }
+
+        [Resolved]
+        private IAPIProvider api { get; set; }
+
+        public TopLocalRank(BeatmapInfo beatmap)
+            : base(null)
+        {
+            this.beatmap = beatmap;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            scores.ItemAdded += scoreChanged;
+            scores.ItemRemoved += scoreChanged;
+            ruleset.ValueChanged += _ => fetchAndLoadTopScore();
+
+            fetchAndLoadTopScore();
+        }
+
+        private void scoreChanged(ScoreInfo score)
+        {
+            if (score.BeatmapInfoID == beatmap.ID)
+                fetchAndLoadTopScore();
+        }
+
+        private ScheduledDelegate scheduledRankUpdate;
+
+        private void fetchAndLoadTopScore()
+        {
+            var rank = fetchTopScore()?.Rank;
+            scheduledRankUpdate = Schedule(() =>
+            {
+                Rank = rank;
+
+                // Required since presence is changed via IsPresent override
+                Invalidate(Invalidation.Presence);
+            });
+        }
+
+        // We're present if a rank is set, or if there is a pending rank update (IsPresent = true is required for the scheduler to run).
+        public override bool IsPresent => base.IsPresent && (Rank != null || scheduledRankUpdate?.Completed == false);
+
+        private ScoreInfo fetchTopScore()
+        {
+            if (scores == null || beatmap == null || ruleset?.Value == null || api?.LocalUser.Value == null)
+                return null;
+
+            return scores.QueryScores(s => s.UserID == api.LocalUser.Value.Id && s.BeatmapInfoID == beatmap.ID && s.RulesetID == ruleset.Value.ID && !s.DeletePending)
+                         .OrderByDescending(s => s.TotalScore)
+                         .FirstOrDefault();
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (scores != null)
+            {
+                scores.ItemAdded -= scoreChanged;
+                scores.ItemRemoved -= scoreChanged;
+            }
+        }
+    }
+}