Expose total scores count from backend

osu.Game.Tests/Visual/Gameplay/TestSceneSoloGameplayLeaderboardProvider.cs

@@ -37,6 +37,7 @@ namespace osu.Game.Tests.Visual.Gameplay
                         TotalScore = 10_000 * (100 - i),
                         Position = i,
                     }).ToArray(),
+                    1337,
                     null
                 );
             });
@@ -83,6 +84,7 @@ namespace osu.Game.Tests.Visual.Gameplay
                         TotalScore = 600_000 + 10_000 * (40 - i),
                         Position = i,
                     }).ToArray(),
+                    1337,
                     null
                 );
             });
@@ -129,6 +131,7 @@ namespace osu.Game.Tests.Visual.Gameplay
                         TotalScore = 500_000 + 10_000 * (50 - i),
                         Position = i
                     }).ToArray(),
+                    1337,
                     new ScoreInfo { TotalScore = 200_000 }
                 );
             });

osu.Game.Tests/Visual/SongSelectV2/TestSceneBeatmapLeaderboardWedge.cs

@@ -312,7 +312,8 @@ namespace osu.Game.Tests.Visual.SongSelectV2
                     Username = @"waaiiru",
                     CountryCode = CountryCode.ES,
                 },
-            });
+                Date = DateTimeOffset.Now,
+            }, 1234567);
         }
 
         private void showPersonalBest()
@@ -332,8 +333,9 @@ namespace osu.Game.Tests.Visual.SongSelectV2
                     Id = 6602580,
                     Username = @"waaiiru",
                     CountryCode = CountryCode.ES,
-                }
-            });
+                },
+                Date = DateTimeOffset.Now,
+            }, 1234567);
         }
 
         private void setScope(BeatmapLeaderboardScope scope)
@@ -364,7 +366,7 @@ namespace osu.Game.Tests.Visual.SongSelectV2
         private partial class TestBeatmapLeaderboardWedge : BeatmapLeaderboardWedge
         {
             public new void SetState(LeaderboardState state) => base.SetState(state);
-            public new void SetScores(IEnumerable<ScoreInfo> scores, ScoreInfo? userScore = null) => base.SetScores(scores, userScore);
+            public new void SetScores(IEnumerable<ScoreInfo> scores, ScoreInfo? userScore = null, int? totalCount = null) => base.SetScores(scores, userScore, totalCount);
         }
     }
 }

osu.Game/Online/API/Requests/Responses/APIScoresCollection.cs

@@ -10,6 +10,9 @@ namespace osu.Game.Online.API.Requests.Responses
 {
     public class APIScoresCollection
     {
+        [JsonProperty(@"score_count")]
+        public int ScoresCount;
+
         [JsonProperty(@"scores")]
         public List<SoloScoreInfo> Scores;
 

osu.Game/Online/Leaderboards/LeaderboardManager.cs

@@ -133,6 +133,7 @@ namespace osu.Game.Online.Leaderboards
                                         return s;
                                     })
                                     .ToArray(),
+                            response.ScoresCount,
                             response.UserScore?.CreateScoreInfo(rulesets, newCriteria.Beatmap)
                         );
                         inFlightOnlineRequest = null;
@@ -181,7 +182,8 @@ namespace osu.Game.Online.Leaderboards
 
             newScores = newScores.Detach().OrderByTotalScore();
 
-            scores.Value = LeaderboardScores.Success(newScores.ToArray(), null);
+            var newScoresArray = newScores.ToArray();
+            scores.Value = LeaderboardScores.Success(newScoresArray, newScoresArray.Length, null);
         }
     }
 
@@ -195,6 +197,7 @@ namespace osu.Game.Online.Leaderboards
     public record LeaderboardScores
     {
         public ICollection<ScoreInfo> TopScores { get; }
+        public int TotalScores { get; }
         public ScoreInfo? UserScore { get; }
         public LeaderboardFailState? FailState { get; }
 
@@ -210,15 +213,16 @@ namespace osu.Game.Online.Leaderboards
             }
         }
 
-        private LeaderboardScores(ICollection<ScoreInfo> topScores, ScoreInfo? userScore, LeaderboardFailState? failState)
+        private LeaderboardScores(ICollection<ScoreInfo> topScores, int totalScores, ScoreInfo? userScore, LeaderboardFailState? failState)
         {
             TopScores = topScores;
+            TotalScores = totalScores;
             UserScore = userScore;
             FailState = failState;
         }
 
-        public static LeaderboardScores Success(ICollection<ScoreInfo> topScores, ScoreInfo? userScore) => new LeaderboardScores(topScores, userScore, null);
-        public static LeaderboardScores Failure(LeaderboardFailState failState) => new LeaderboardScores([], null, failState);
+        public static LeaderboardScores Success(ICollection<ScoreInfo> topScores, int totalScores, ScoreInfo? userScore) => new LeaderboardScores(topScores, totalScores, userScore, null);
+        public static LeaderboardScores Failure(LeaderboardFailState failState) => new LeaderboardScores([], 0, null, failState);
     }
 
     public enum LeaderboardFailState