Add basic "time ago" display to leaderboards on beatmap overlay

osu.Game.Tests/Visual/Online/TestSceneScoreboardTime.cs

@@ -0,0 +1,57 @@
+// Copyright (c) ppy Pty Ltd <[email protected]>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Timing;
+using osu.Game.Overlays.BeatmapSet.Scores;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    public class TestSceneScoreboardTime : OsuTestScene
+    {
+        private StopwatchClock stopwatch;
+
+        [Test]
+        public void TestVariousUnits()
+        {
+            AddStep("create various scoreboard times", () => Child = new FillFlowContainer
+            {
+                RelativeSizeAxes = Axes.X,
+                AutoSizeAxes = Axes.Y,
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Clock = new FramedClock(stopwatch = new StopwatchClock()), // prevent time from naturally elapsing.
+                Direction = FillDirection.Vertical,
+                ChildrenEnumerable = testCases.Select(dateTime => new ScoreboardTime(dateTime, 24).With(time => time.Anchor = time.Origin = Anchor.TopCentre))
+            });
+
+            AddStep("start stopwatch", () => stopwatch.Start());
+        }
+
+        private static IEnumerable<DateTimeOffset> testCases => new[]
+        {
+            DateTimeOffset.Now,
+            DateTimeOffset.Now.AddSeconds(-1),
+            DateTimeOffset.Now.AddSeconds(-25),
+            DateTimeOffset.Now.AddSeconds(-59),
+            DateTimeOffset.Now.AddMinutes(-1),
+            DateTimeOffset.Now.AddMinutes(-25),
+            DateTimeOffset.Now.AddMinutes(-59),
+            DateTimeOffset.Now.AddHours(-1),
+            DateTimeOffset.Now.AddHours(-13),
+            DateTimeOffset.Now.AddHours(-23),
+            DateTimeOffset.Now.AddDays(-1),
+            DateTimeOffset.Now.AddDays(-6),
+            DateTimeOffset.Now.AddDays(-16),
+            DateTimeOffset.Now.AddMonths(-1),
+            DateTimeOffset.Now.AddMonths(-11),
+            DateTimeOffset.Now.AddYears(-1),
+            DateTimeOffset.Now.AddYears(-5)
+        };
+    }
+}

osu.Game/Overlays/BeatmapSet/Scores/ScoreTable.cs

@@ -128,6 +128,7 @@ private TableColumn[] createHeaders(IReadOnlyList<ScoreInfo> scores)
             if (showPerformancePoints)
                 columns.Add(new TableColumn(BeatmapsetsStrings.ShowScoreboardHeaderspp, Anchor.CentreLeft, new Dimension(GridSizeMode.Absolute, 30)));
 
+            columns.Add(new TableColumn(BeatmapsetsStrings.ShowScoreboardHeadersTime, Anchor.CentreLeft, new Dimension(GridSizeMode.AutoSize)));
             columns.Add(new TableColumn(BeatmapsetsStrings.ShowScoreboardHeadersMods, Anchor.CentreLeft, new Dimension(GridSizeMode.AutoSize)));
 
             return columns.ToArray();
@@ -202,6 +203,11 @@ private Drawable[] createContent(int index, ScoreInfo score)
                 });
             }
 
+            content.Add(new ScoreboardTime(score.Date, text_size)
+            {
+                Margin = new MarginPadding { Right = 10 }
+            });
+
             content.Add(new FillFlowContainer
             {
                 Direction = FillDirection.Horizontal,

osu.Game/Overlays/BeatmapSet/Scores/ScoreboardTime.cs

@@ -0,0 +1,56 @@
+// Copyright (c) ppy Pty Ltd <[email protected]>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using Humanizer;
+using osu.Game.Graphics;
+using osu.Game.Resources.Localisation.Web;
+
+namespace osu.Game.Overlays.BeatmapSet.Scores
+{
+    public class ScoreboardTime : DrawableDate
+    {
+        public ScoreboardTime(DateTimeOffset date, float textSize = OsuFont.DEFAULT_FONT_SIZE, bool italic = true)
+            : base(date, textSize, italic)
+        {
+        }
+
+        protected override string Format()
+        {
+            var now = DateTime.Now;
+            var difference = now - Date;
+
+            // web uses momentjs's custom locales to format the date for the purposes of the scoreboard.
+            // this is intended to be a best-effort, more legible approximation of that.
+            // compare:
+            // * https://github.com/ppy/osu-web/blob/a8f5a68fb435cb19a4faa4c7c4bce08c4f096933/resources/assets/lib/scoreboard-time.tsx
+            // * https://momentjs.com/docs/#/customization/ (reference for the customisation format)
+
+            // TODO: support localisation (probably via `CommonStrings.CountHours()` etc.)
+            // requires pluralisable string support framework-side
+
+            if (difference.TotalHours < 1)
+                return CommonStrings.TimeNow.ToString();
+            if (difference.TotalDays < 1)
+                return "hr".ToQuantity((int)difference.TotalHours);
+
+            // this is where this gets more complicated because of how the calendar works.
+            // since there's no `TotalMonths` / `TotalYears`, we have to iteratively add months/years
+            // and test against cutoff dates to determine how many months/years to show.
+
+            if (Date > now.AddMonths(-1))
+                return difference.TotalDays < 2 ? "1dy" : $"{(int)difference.TotalDays}dys";
+
+            for (int months = 1; months <= 11; ++months)
+            {
+                if (Date > now.AddMonths(-(months + 1)))
+                    return months == 1 ? "1mo" : $"{months}mos";
+            }
+
+            int years = 1;
+            while (Date <= now.AddYears(-(years + 1)))
+                years += 1;
+            return years == 1 ? "1yr" : $"{years}yrs";
+        }
+    }
+}