From 78caf588be896ae74b2cf59a1f46964ac188d167 Mon Sep 17 00:00:00 2001
From: XShine555 <xshine555@gmail.com>
Date: Tue, 14 Jul 2026 13:26:04 +0200
Subject: [PATCH] fix(backend): order listening history by recency and cap to
 15 tracks

---
 .../Tracks/GetListeningHistory.cs                  | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/backend/Musify.Application/Tracks/GetListeningHistory.cs b/backend/Musify.Application/Tracks/GetListeningHistory.cs
index 8a50d0c..99332c1 100644
--- a/backend/Musify.Application/Tracks/GetListeningHistory.cs
+++ b/backend/Musify.Application/Tracks/GetListeningHistory.cs
@@ -10,19 +10,19 @@ namespace Musify.Application.Tracks
         IDatabase database)
         : IQueryHandler<GetListeningHistoryQuery, IEnumerable<TrackApplicationResponse>>
     {
+        public const int ListSize = 15;
+
         public ValueTask<IEnumerable<TrackApplicationResponse>> Handle(GetListeningHistoryQuery query, CancellationToken cancellationToken)
         {
             var listeningHistory = database.ListeningHistories
                 .Where(l => l.UserId == query.UserId)
-                .Select(l => l.TrackId)
-                .ToList();
-
-            var tracks = database.Tracks
-                .Where(t => listeningHistory.Contains(t.Id))
-                .Select(TrackApplicationResponse.FromEntity)
+                .OrderByDescending(l => l.ListenedAt)
+                .Select(t => TrackApplicationResponse.FromEntity(t.Track))
+                .Take(ListSize)
+                .DistinctBy(t => t.Id)
                 .AsEnumerable();
 
-            return ValueTask.FromResult(tracks);
+            return ValueTask.FromResult(listeningHistory);
         }
     }
 }