Merge pull request 'Web player general changes' (#22) from web-player-general-changes into master

Reviewed-on: #22

.gitea/workflows/ci-cd.yml

@@ -86,11 +86,23 @@ jobs:
           git fetch origin master
           git reset --hard origin/master
 
-      - name: Migrate database, generate keys
+      - name: Generate stream-ticket keys
         run: |
           set -euo pipefail
           cd "$DEPLOY_PATH"
-          $COMPOSE up -d wait-for-postgres keys-init migrate
+          $COMPOSE run --rm --no-deps keys-init
+
+      # The migrations are baked into the migrator image, so it is rebuilt on
+      # every deploy (plain `up` would reuse the stale image and re-apply the
+      # old migrations). `run --rm` starts wait-for-postgres, blocks until the
+      # migration finishes and propagates its exit code, so a failed migration
+      # aborts the deploy before the new API is started against an old schema.
+      - name: Migrate database
+        run: |
+          set -euo pipefail
+          cd "$DEPLOY_PATH"
+          $COMPOSE build migrate
+          $COMPOSE run --rm migrate
 
       # Both jobs verify themselves through the public auth./s3. URLs, served
       # by the shared edge nginx (Infrastructure's edge/), and are idempotent.

backend/Core/Musify.Application/Albums/GetAlbumTracks.cs

@@ -36,7 +36,7 @@ namespace Musify.Application.Albums
 
             var pagedEntities = await tracksQuery
                 .OrderBy(albumTrack => albumTrack.TrackNumber)
-                .Select(albumTrack => new { albumTrack.Track, ListensCount = albumTrack.Track.ListeningHistories.Count })
+                .Select(albumTrack => new { albumTrack.Track, ListensCount = albumTrack.Track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
 
             var pagedTracks = new StaticPagedList<TrackApplicationResponse>(

backend/Core/Musify.Application/Albums/GetRecentlyListenedAlbums.cs

@@ -16,7 +16,7 @@ namespace Musify.Application.Albums
         {
             var listenedTrackIds = database.ListeningHistories
                 .AsNoTracking()
-                .Where(history => history.UserId == request.UserId);
+                .Where(history => history.UserId == request.UserId && history.IsCounted);
 
             var ranked = await database.AlbumHasTracks
                 .AsNoTracking()

backend/Core/Musify.Application/Genres/GetAvailableGenres.cs

@@ -0,0 +1,26 @@
+using Mediator;
+using Musify.Domain.ValueObjects;
+
+namespace Musify.Application.Genres
+{
+    public record GetAvailableGenresQuery : IQuery<IReadOnlyList<AvailableGenreResponse>>;
+
+    public record AvailableGenreResponse(Genre Genre, IReadOnlyList<Genre> IncompatibleWith);
+
+    public class GetAvailableGenresQueryHandler
+        : IQueryHandler<GetAvailableGenresQuery, IReadOnlyList<AvailableGenreResponse>>
+    {
+        public ValueTask<IReadOnlyList<AvailableGenreResponse>> Handle(GetAvailableGenresQuery request, CancellationToken cancellationToken)
+        {
+            var all = Enum.GetValues<Genre>();
+
+            IReadOnlyList<AvailableGenreResponse> result = all
+                .Select(genre => new AvailableGenreResponse(
+                    genre,
+                    all.Where(other => !GenreCompatibility.AreCompatible(genre, other)).ToList()))
+                .ToList();
+
+            return ValueTask.FromResult(result);
+        }
+    }
+}

backend/Core/Musify.Application/Genres/GetGenres.cs

@@ -0,0 +1,31 @@
+using Mediator;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts;
+using Musify.Domain.ValueObjects;
+
+namespace Musify.Application.Genres
+{
+    public record GetGenresQuery : IQuery<IReadOnlyList<GenreResponse>>;
+
+    public record GenreResponse(Genre Genre, int TrackCount);
+
+    public class GetGenresQueryHandler(IDatabase database)
+        : IQueryHandler<GetGenresQuery, IReadOnlyList<GenreResponse>>
+    {
+        public async ValueTask<IReadOnlyList<GenreResponse>> Handle(GetGenresQuery request, CancellationToken cancellationToken)
+        {
+            var rows = await database.TrackTags
+                .AsNoTracking()
+                .Where(tag => database.UserHasTracks.Any(userTrack => userTrack.TrackId == tag.TrackId))
+                .GroupBy(tag => tag.Tag)
+                .Select(group => new { Genre = group.Key, TrackCount = group.Select(tag => tag.TrackId).Distinct().Count() })
+                .ToListAsync(cancellationToken);
+
+            return rows
+                .OrderByDescending(row => row.TrackCount)
+                .ThenBy(row => row.Genre)
+                .Select(row => new GenreResponse(row.Genre, row.TrackCount))
+                .ToList();
+        }
+    }
+}

backend/Core/Musify.Application/Likes/GetLikedTracks.cs

@@ -30,7 +30,7 @@ namespace Musify.Application.Likes
 
             var pagedEntities = await likesQuery
                 .OrderByDescending(like => like.CreatedAt)
-                .Select(like => new { like.Track, ListensCount = like.Track.ListeningHistories.Count })
+                .Select(like => new { like.Track, ListensCount = like.Track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
 
             var pagedTracks = new StaticPagedList<TrackApplicationResponse>(

backend/Core/Musify.Application/Mixes/GenerateMixesForUser.cs

@@ -38,7 +38,7 @@ namespace Musify.Application.Mixes
 
             var historyTrackIds = await database.ListeningHistories
                 .AsNoTracking()
-                .Where(history => history.UserId == userId)
+                .Where(history => history.UserId == userId && history.IsCounted)
                 .Select(history => history.TrackId)
                 .Distinct()
                 .ToListAsync(cancellationToken);

backend/Core/Musify.Application/Mixes/MixItemMapper.cs

@@ -19,7 +19,7 @@ namespace Musify.Application.Mixes
                 .AsNoTracking()
                 .Include(track => track.Owner)
                 .Where(track => trackIds.Contains(track.Id))
-                .Select(track => new { Track = track, ListensCount = track.ListeningHistories.Count })
+                .Select(track => new { Track = track, ListensCount = track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToDictionaryAsync(x => x.Track.Id, cancellationToken);
 
             return orderedItems

backend/Core/Musify.Application/PlayLists/GetPlayListTracks.cs

@@ -36,7 +36,7 @@ namespace Musify.Application.PlayLists
 
             var pagedEntities = await tracksQuery
                 .OrderBy(plt => plt.Position)
-                .Select(plt => new { plt.Track, ListensCount = plt.Track.ListeningHistories.Count })
+                .Select(plt => new { plt.Track, ListensCount = plt.Track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
 
             var pagedTracks = new StaticPagedList<TrackApplicationResponse>(

backend/Core/Musify.Application/Services/TrackStreamIssuer.cs

@@ -30,6 +30,7 @@ public sealed class TrackStreamIssuer(
             folderPath,
             streamGatewayConfiguration.AudioFileName);
 
+        Guid? listenId = null;
         if (userId != null)
         {
             var newListeningHistory = new ListeningHistory
@@ -39,9 +40,10 @@ public sealed class TrackStreamIssuer(
             };
             await database.ListeningHistories.AddAsync(newListeningHistory, cancellationToken);
             await database.SaveChangesAsync(cancellationToken);
+            listenId = newListeningHistory.Id;
         }
 
-        return new TrackStreamResponse(manifestUrl, ticket.Token, ticket.ExpiresInSeconds);
+        return new TrackStreamResponse(manifestUrl, ticket.Token, ticket.ExpiresInSeconds, listenId);
     }
 
     private long? AnonymousFragmentBytes(long? userId)

backend/Core/Musify.Application/Tracks/CreateTrack.cs

@@ -18,7 +18,8 @@ namespace Musify.Application.Tracks
         string Title,
         Guid PictureIntentId,
         Guid AudioIntentId,
-        IReadOnlyCollection<Genre> Tags)
+        IReadOnlyCollection<Genre> Tags,
+        bool IsExplicit = false)
         : ICommand<ErrorOr<TrackApplicationResponse>>;
 
     public class CreateTrackCommandHandler(
@@ -83,6 +84,7 @@ namespace Musify.Application.Tracks
                 NormalizedTitle = request.Title.ToUpperInvariant(),
                 OwnerUserId = user.Id,
                 Owner = user,
+                IsExplicit = request.IsExplicit,
                 Pictures = new TrackPictures
                 {
                     OriginalName = pictureIntent.ObjectName,

backend/Core/Musify.Application/Tracks/DeleteStaleUncountedListens.cs

@@ -0,0 +1,33 @@
+using Mediator;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Musify.Application.Contracts;
+
+namespace Musify.Application.Tracks
+{
+    public record DeleteStaleUncountedListensCommand : ICommand<int>;
+
+    public class DeleteStaleUncountedListensCommandHandler(
+        IDatabase database,
+        ILogger<DeleteStaleUncountedListensCommandHandler> logger)
+        : ICommandHandler<DeleteStaleUncountedListensCommand, int>
+    {
+        public async ValueTask<int> Handle(DeleteStaleUncountedListensCommand request, CancellationToken cancellationToken)
+        {
+            var cutoff = DateTime.UtcNow.AddDays(-ListeningRules.UncountedRetentionDays);
+
+            var stale = await database.ListeningHistories
+                .Where(l => !l.IsCounted && l.ListenedAt < cutoff)
+                .ToListAsync(cancellationToken);
+
+            if (stale.Count == 0)
+                return 0;
+
+            database.ListeningHistories.RemoveRange(stale);
+            await database.SaveChangesAsync(cancellationToken);
+
+            logger.LogInformation("Deleted {Count} uncounted listens older than {Days} days", stale.Count, ListeningRules.UncountedRetentionDays);
+            return stale.Count;
+        }
+    }
+}

backend/Core/Musify.Application/Tracks/GetLastTrackListenedByUserId.cs

@@ -19,7 +19,7 @@ namespace Musify.Application.Tracks
                 .Include(t => t.Track.Tags)
                 .Where(t => t.UserId == query.UserId)
                 .OrderByDescending(t => t.ListenedAt)
-                .Select(t => TrackApplicationResponse.FromEntity(t.Track, t.Track.ListeningHistories.Count))
+                .Select(t => TrackApplicationResponse.FromEntity(t.Track, t.Track.ListeningHistories.Count(l => l.IsCounted)))
                 .FirstOrDefaultAsync(cancellationToken);
 
             return track == null

backend/Core/Musify.Application/Tracks/GetListeningHistory.cs

@@ -17,7 +17,7 @@ namespace Musify.Application.Tracks
         {
             var recentTrackIds = await database.ListeningHistories
                 .AsNoTracking()
-                .Where(l => l.UserId == query.UserId)
+                .Where(l => l.UserId == query.UserId && l.IsCounted)
                 .GroupBy(l => l.TrackId)
                 .OrderByDescending(g => g.Max(l => l.ListenedAt))
                 .Select(g => g.Key)
@@ -29,7 +29,7 @@ namespace Musify.Application.Tracks
                 .Include(t => t.Owner)
                 .Include(t => t.Tags)
                 .Where(t => recentTrackIds.Contains(t.Id))
-                .Select(t => new { t.Id, Track = t, ListensCount = t.ListeningHistories.Count })
+                .Select(t => new { t.Id, Track = t, ListensCount = t.ListeningHistories.Count(l => l.IsCounted) })
                 .ToDictionaryAsync(t => t.Id, cancellationToken);
 
             return recentTrackIds

backend/Core/Musify.Application/Tracks/GetTrackById.cs

@@ -18,7 +18,7 @@ namespace Musify.Application.Tracks
                 .Include(t => t.Owner)
                 .Include(t => t.Tags)
                 .Where(t => t.Id == request.TrackId)
-                .Select(t => new { Track = t, ListensCount = t.ListeningHistories.Count })
+                .Select(t => new { Track = t, ListensCount = t.ListeningHistories.Count(l => l.IsCounted) })
                 .SingleOrDefaultAsync(cancellationToken);
 
             if (entity == null)

backend/Core/Musify.Application/Tracks/GetTracks.cs

@@ -5,10 +5,11 @@ using Musify.Application.Tracks.Responses;
 using X.PagedList;
 using X.PagedList.EF;
 using Musify.Application.Contracts;
+using Musify.Domain.ValueObjects;
 
 namespace Musify.Application.Tracks
 {
-    public record GetTracksQuery(string? Name, int PageNumber, int PageSize)
+    public record GetTracksQuery(string? Name, int PageNumber, int PageSize, Genre? Genre = null)
         : IQuery<ErrorOr<TracksSearchResponse>>;
 
     public class GetTracksQueryHandler(IDatabase database)
@@ -28,12 +29,15 @@ namespace Musify.Application.Tracks
                 tracksQuery = tracksQuery.Where(t => t.Track.NormalizedTitle.Contains(normalizedName));
             }
 
+            if (request.Genre is { } genre)
+                tracksQuery = tracksQuery.Where(t => t.Track.Tags.Any(tag => tag.Tag == genre));
+
             var totalCount = await tracksQuery.CountAsync(cancellationToken);
 
             var pagedEntities = await tracksQuery
                 .OrderByDescending(t => t.Track.CreatedAt)
                 .ThenBy(t => t.Id)
-                .Select(t => new { t.Track, ListensCount = t.Track.ListeningHistories.Count })
+                .Select(t => new { t.Track, ListensCount = t.Track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
 
             var items = pagedEntities

backend/Core/Musify.Application/Tracks/GetTracksByUserId.cs

@@ -40,7 +40,7 @@ namespace Musify.Application.Tracks
 
             var pagedEntities = await tracksQuery
                 .OrderBy(t => t.Track.CreatedAt)
-                .Select(t => new { t.Track, ListensCount = t.Track.ListeningHistories.Count })
+                .Select(t => new { t.Track, ListensCount = t.Track.ListeningHistories.Count(l => l.IsCounted) })
                 .ToPagedListAsync(pageNumber, pageSize, totalCount, cancellationToken);
 
             var pagedTracks = new StaticPagedList<TrackApplicationResponse>(

backend/Core/Musify.Application/Tracks/ListeningRules.cs

@@ -0,0 +1,14 @@
+namespace Musify.Application.Tracks
+{
+    public static class ListeningRules
+    {
+        public const double CountedThresholdSeconds = 30;
+        public const double CountedThresholdFraction = 0.5;
+        public const double DurationToleranceSeconds = 2;
+        public const double ClockToleranceSeconds = 5;
+        public const int UncountedRetentionDays = 8;
+
+        public static double CountedThreshold(double durationSeconds) =>
+            Math.Min(CountedThresholdSeconds, durationSeconds * CountedThresholdFraction);
+    }
+}

backend/Core/Musify.Application/Tracks/RecordListeningProgress.cs

@@ -0,0 +1,44 @@
+using ErrorOr;
+using Mediator;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts;
+
+namespace Musify.Application.Tracks
+{
+    public record RecordListeningProgressCommand(
+        long UserId,
+        Guid ListenId,
+        double PlayedSeconds)
+        : ICommand<ErrorOr<Success>>;
+
+    public class RecordListeningProgressCommandHandler(IDatabase database)
+        : ICommandHandler<RecordListeningProgressCommand, ErrorOr<Success>>
+    {
+        public async ValueTask<ErrorOr<Success>> Handle(RecordListeningProgressCommand request, CancellationToken cancellationToken)
+        {
+            if (!double.IsFinite(request.PlayedSeconds) || request.PlayedSeconds < 0)
+                return Error.Validation(description: "playedSeconds must be a non-negative number.");
+
+            var listen = await database.ListeningHistories
+                .Include(l => l.Track)
+                .SingleOrDefaultAsync(l => l.Id == request.ListenId && l.UserId == request.UserId, cancellationToken);
+
+            if (listen == null)
+                return Error.NotFound();
+
+            var now = DateTime.UtcNow;
+            var durationCap = listen.Track.DurationSeconds + ListeningRules.DurationToleranceSeconds;
+            var clockCap = (now - listen.ListenedAt).TotalSeconds + ListeningRules.ClockToleranceSeconds;
+            var accepted = Math.Min(request.PlayedSeconds, Math.Min(durationCap, clockCap));
+
+            listen.PlayedSeconds = Math.Max(listen.PlayedSeconds ?? 0, accepted);
+            listen.LastProgressAt = now;
+            listen.IsCounted = listen.IsCounted
+                || listen.PlayedSeconds >= ListeningRules.CountedThreshold(listen.Track.DurationSeconds);
+
+            await database.SaveChangesAsync(cancellationToken);
+
+            return Result.Success;
+        }
+    }
+}

backend/Core/Musify.Application/Tracks/Responses/TrackApplicationResponse.cs

@@ -15,7 +15,8 @@ namespace Musify.Application.Tracks.Responses
         DateTime CreatedAt,
         DateTime UpdatedAt,
         [property: JsonConverter(typeof(LongAsStringConverter))] long OwnerUserId,
-        IReadOnlyCollection<Genre> Tags)
+        IReadOnlyCollection<Genre> Tags,
+        bool IsExplicit)
     {
         public static TrackApplicationResponse FromEntity(Track track, int listensCount) =>
             new(
@@ -28,6 +29,7 @@ namespace Musify.Application.Tracks.Responses
                 track.CreatedAt,
                 track.UpdatedAt,
                 track.OwnerUserId,
-                track.Tags.Select(tag => tag.Tag).ToList());
+                track.Tags.Select(tag => tag.Tag).ToList(),
+                track.IsExplicit);
     }
 }

backend/Core/Musify.Application/Tracks/Responses/TrackStreamResponse.cs

@@ -3,5 +3,6 @@ namespace Musify.Application.Tracks.Responses
     public record TrackStreamResponse(
         string ManifestUrl,
         string Ticket,
-        int ExpiresInSeconds);
+        int ExpiresInSeconds,
+        Guid? ListenId = null);
 }

backend/Core/Musify.Application/Users/FollowVisibility.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts;
+
+namespace Musify.Application.Users
+{
+    public static class FollowVisibility
+    {
+        public static async Task<bool> CanViewFollowersAsync(
+            IDatabase database,
+            long? viewerId,
+            long userId,
+            CancellationToken cancellationToken)
+        {
+            if (viewerId is not { } viewer)
+                return false;
+
+            if (viewer == userId)
+                return true;
+
+            var mutualRows = await database.UserFollows
+                .AsNoTracking()
+                .CountAsync(f =>
+                    (f.FollowerId == viewer && f.FollowedId == userId) ||
+                    (f.FollowerId == userId && f.FollowedId == viewer),
+                    cancellationToken);
+
+            return mutualRows == 2;
+        }
+    }
+}

backend/Core/Musify.Application/Users/GetListeningStats.cs

@@ -20,17 +20,18 @@ namespace Musify.Application.Users
                 .Where(l => l.UserId == request.UserId && l.ListenedAt >= weekAgo);
 
             var tracksThisWeek = await thisWeekHistory
+                .Where(l => l.IsCounted)
                 .Select(l => l.TrackId)
                 .Distinct()
                 .CountAsync(cancellationToken);
 
             var secondsThisWeek = await thisWeekHistory
-                .Join(database.Tracks.AsNoTracking(), l => l.TrackId, t => t.Id, (l, t) => t.DurationSeconds)
+                .Join(database.Tracks.AsNoTracking(), l => l.TrackId, t => t.Id, (l, t) => l.PlayedSeconds ?? (l.IsCounted ? t.DurationSeconds : 0))
                 .SumAsync(cancellationToken);
 
             var listenedDates = await database.ListeningHistories
                 .AsNoTracking()
-                .Where(l => l.UserId == request.UserId)
+                .Where(l => l.UserId == request.UserId && l.IsCounted)
                 .Select(l => l.ListenedAt.Date)
                 .Distinct()
                 .ToListAsync(cancellationToken);

backend/Core/Musify.Application/Users/GetUserFollowers.cs

@@ -0,0 +1,46 @@
+using ErrorOr;
+using Mediator;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts;
+using Musify.Application.Shared;
+using Musify.Application.Users.Responses;
+using X.PagedList.EF;
+
+namespace Musify.Application.Users
+{
+    public record GetUserFollowersQuery(long? ViewerId, long UserId, int PageNumber, int PageSize)
+        : IQuery<ErrorOr<PaginatedResponse<UserSummaryResponse>>>;
+
+    public class GetUserFollowersQueryHandler(IDatabase database)
+        : IQueryHandler<GetUserFollowersQuery, ErrorOr<PaginatedResponse<UserSummaryResponse>>>
+    {
+        public async ValueTask<ErrorOr<PaginatedResponse<UserSummaryResponse>>> Handle(GetUserFollowersQuery request, CancellationToken cancellationToken)
+        {
+            if (!await database.Users.AnyAsync(u => u.Id == request.UserId, cancellationToken))
+                return Error.NotFound();
+
+            if (!await FollowVisibility.CanViewFollowersAsync(database, request.ViewerId, request.UserId, cancellationToken))
+                return Error.Forbidden();
+
+            var followsQuery = database.UserFollows
+                .AsNoTracking()
+                .Where(f => f.FollowedId == request.UserId);
+
+            var totalCount = await followsQuery.CountAsync(cancellationToken);
+            var viewerId = request.ViewerId;
+
+            var page = await followsQuery
+                .OrderByDescending(f => f.CreatedAt)
+                .Select(f => new UserSummaryResponse(
+                    f.Follower.Id,
+                    f.Follower.Name,
+                    f.Follower.FirstName,
+                    f.Follower.SecondName,
+                    f.Follower.ProfilePictureUrl,
+                    viewerId != null && database.UserFollows.Any(v => v.FollowerId == viewerId && v.FollowedId == f.FollowerId)))
+                .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
+
+            return PaginatedResponse<UserSummaryResponse>.FromPagedList(page);
+        }
+    }
+}

backend/Core/Musify.Application/Users/GetUserFollowing.cs

@@ -0,0 +1,43 @@
+using ErrorOr;
+using Mediator;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts;
+using Musify.Application.Shared;
+using Musify.Application.Users.Responses;
+using X.PagedList.EF;
+
+namespace Musify.Application.Users
+{
+    public record GetUserFollowingQuery(long? ViewerId, long UserId, int PageNumber, int PageSize)
+        : IQuery<ErrorOr<PaginatedResponse<UserSummaryResponse>>>;
+
+    public class GetUserFollowingQueryHandler(IDatabase database)
+        : IQueryHandler<GetUserFollowingQuery, ErrorOr<PaginatedResponse<UserSummaryResponse>>>
+    {
+        public async ValueTask<ErrorOr<PaginatedResponse<UserSummaryResponse>>> Handle(GetUserFollowingQuery request, CancellationToken cancellationToken)
+        {
+            if (!await database.Users.AnyAsync(u => u.Id == request.UserId, cancellationToken))
+                return Error.NotFound();
+
+            var followsQuery = database.UserFollows
+                .AsNoTracking()
+                .Where(f => f.FollowerId == request.UserId);
+
+            var totalCount = await followsQuery.CountAsync(cancellationToken);
+            var viewerId = request.ViewerId;
+
+            var page = await followsQuery
+                .OrderByDescending(f => f.CreatedAt)
+                .Select(f => new UserSummaryResponse(
+                    f.Followed.Id,
+                    f.Followed.Name,
+                    f.Followed.FirstName,
+                    f.Followed.SecondName,
+                    f.Followed.ProfilePictureUrl,
+                    viewerId != null && database.UserFollows.Any(v => v.FollowerId == viewerId && v.FollowedId == f.FollowedId)))
+                .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
+
+            return PaginatedResponse<UserSummaryResponse>.FromPagedList(page);
+        }
+    }
+}

backend/Core/Musify.Application/Users/GetUserProfile.cs

@@ -7,7 +7,7 @@ using Musify.Application.Serialization;
 
 namespace Musify.Application.Users
 {
-    public record GetUserProfileQuery(long UserId) : IQuery<ErrorOr<UserProfileResponse>>;
+    public record GetUserProfileQuery(long UserId, long? ViewerId = null) : IQuery<ErrorOr<UserProfileResponse>>;
 
     public record UserProfileResponse(
         [property: JsonConverter(typeof(LongAsStringConverter))] long Id,
@@ -17,7 +17,9 @@ namespace Musify.Application.Users
         string? ProfilePictureUrl,
         DateTime CreatedAt,
         int FollowersCount,
-        int FollowingCount);
+        int FollowingCount,
+        bool IsFollowing,
+        bool CanViewFollowers);
 
     public class GetUserProfileQueryHandler(IDatabase database)
         : IQueryHandler<GetUserProfileQuery, ErrorOr<UserProfileResponse>>
@@ -49,6 +51,14 @@ namespace Musify.Application.Users
                 .AsNoTracking()
                 .CountAsync(f => f.FollowerId == request.UserId, cancellationToken);
 
+            var isFollowing = request.ViewerId is { } viewerId && viewerId != request.UserId &&
+                await database.UserFollows
+                    .AsNoTracking()
+                    .AnyAsync(f => f.FollowerId == viewerId && f.FollowedId == request.UserId, cancellationToken);
+
+            var canViewFollowers = await FollowVisibility.CanViewFollowersAsync(
+                database, request.ViewerId, request.UserId, cancellationToken);
+
             return new UserProfileResponse(
                 user.Id,
                 user.Name,
@@ -57,7 +67,9 @@ namespace Musify.Application.Users
                 user.ProfilePictureUrl,
                 user.CreatedAt,
                 followersCount,
-                followingCount);
+                followingCount,
+                isFollowing,
+                canViewFollowers);
         }
     }
 }

backend/Core/Musify.Application/Users/GetUsers.cs

@@ -8,13 +8,13 @@ using Musify.Application.Contracts;
 
 namespace Musify.Application.Users
 {
-    public record GetUsersQuery(int PageNumber, int PageSize, string? UsernameSearch)
-        : IQuery<ErrorOr<PaginatedResponse<UserApplicationResponse>>>;
+    public record GetUsersQuery(int PageNumber, int PageSize, string? UsernameSearch, long? ViewerId = null)
+        : IQuery<ErrorOr<PaginatedResponse<UserSummaryResponse>>>;
 
     public class GetUsersQueryHandler(IDatabase database)
-        : IQueryHandler<GetUsersQuery, ErrorOr<PaginatedResponse<UserApplicationResponse>>>
+        : IQueryHandler<GetUsersQuery, ErrorOr<PaginatedResponse<UserSummaryResponse>>>
     {
-        public async ValueTask<ErrorOr<PaginatedResponse<UserApplicationResponse>>> Handle(GetUsersQuery request, CancellationToken cancellationToken)
+        public async ValueTask<ErrorOr<PaginatedResponse<UserSummaryResponse>>> Handle(GetUsersQuery request, CancellationToken cancellationToken)
         {
             var usersQuery = database.Users
                 .AsNoTracking()
@@ -27,11 +27,19 @@ namespace Musify.Application.Users
             }
 
             var totalCount = await usersQuery.CountAsync(cancellationToken);
+            var viewerId = request.ViewerId;
             var pagedUsers = await usersQuery
-                .Select(u => UserApplicationResponse.FromEntity(u))
+                .OrderBy(u => u.Name)
+                .Select(u => new UserSummaryResponse(
+                    u.Id,
+                    u.Name,
+                    u.FirstName,
+                    u.SecondName,
+                    u.ProfilePictureUrl,
+                    viewerId != null && database.UserFollows.Any(f => f.FollowerId == viewerId && f.FollowedId == u.Id)))
                 .ToPagedListAsync(request.PageNumber, request.PageSize, totalCount, cancellationToken);
 
-            return PaginatedResponse<UserApplicationResponse>.FromPagedList(pagedUsers);
+            return PaginatedResponse<UserSummaryResponse>.FromPagedList(pagedUsers);
         }
     }
 }

backend/Core/Musify.Application/Users/Responses/UserSummaryResponse.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+using Musify.Application.Serialization;
+
+namespace Musify.Application.Users.Responses
+{
+    public record UserSummaryResponse(
+        [property: JsonConverter(typeof(LongAsStringConverter))] long Id,
+        string Name,
+        string? FirstName,
+        string? SecondName,
+        string? ProfilePictureUrl,
+        bool IsFollowedByViewer);
+}

backend/Core/Musify.Domain/Entities/ListeningHistory.cs

@@ -19,6 +19,12 @@ namespace Musify.Domain.Entities
         [Required]
         public DateTime ListenedAt { get; set; } = DateTime.UtcNow;
 
+        public double? PlayedSeconds { get; set; }
+
+        public DateTime? LastProgressAt { get; set; }
+
+        public bool IsCounted { get; set; }
+
         [ForeignKey(nameof(UserId) )]
         public User User { get; set; }
 

backend/Core/Musify.Domain/Entities/Track.cs

@@ -31,6 +31,9 @@ namespace Musify.Domain.Entities
         [Required]
         public LifeCycleStatus LifeCycleStatus { get; set; } = LifeCycleStatus.Active;
 
+        [Required]
+        public bool IsExplicit { get; set; }
+
         [Required]
         public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
 

backend/Core/Musify.Infrastructure/Jobs/DailyMixGenerationJob.cs

@@ -15,6 +15,7 @@ namespace Musify.Infrastructure.Jobs
         {
             var userIds = await database.ListeningHistories
                 .AsNoTracking()
+                .Where(history => history.IsCounted)
                 .Select(history => history.UserId)
                 .Distinct()
                 .ToListAsync(cancellationToken);

backend/Core/Musify.Infrastructure/Jobs/ListeningHistoryCleanupJob.cs

@@ -0,0 +1,13 @@
+using Mediator;
+using Musify.Application.Tracks;
+
+namespace Musify.Infrastructure.Jobs
+{
+    public class ListeningHistoryCleanupJob(IMediator mediator)
+    {
+        public async Task RunAsync(CancellationToken cancellationToken)
+        {
+            await mediator.Send(new DeleteStaleUncountedListensCommand(), cancellationToken);
+        }
+    }
+}

backend/Core/Musify.Infrastructure/Persistence/AuditableEntityInterceptor.cs

@@ -37,7 +37,7 @@ namespace Musify.Infrastructure.Persistence
                 }
                 else if (entry.State == EntityState.Modified)
                 {
-                    entry.Entity.UpdatedAt = now;
+                    entry.Property(nameof(IAuditable.UpdatedAt)).CurrentValue = now;
                 }
             }
         }

backend/Core/Musify.Infrastructure/Persistence/Database.cs

@@ -13,9 +13,13 @@ namespace Musify.Infrastructure.Persistence
     public class Database(DatabaseConfiguration configuration)
         : DbContext, AppIDatabase
     {
+        private static readonly AuditableEntityInterceptor AuditInterceptor = new();
+
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {
-            optionsBuilder.UseNpgsql(configuration.ConnectionString, o => o.MapEnum<Genre>("genre"));
+            optionsBuilder
+                .UseNpgsql(configuration.ConnectionString, o => o.MapEnum<Genre>("genre"))
+                .AddInterceptors(AuditInterceptor);
         }
 
         protected override void OnModelCreating(ModelBuilder modelBuilder)

backend/Core/Musify.Infrastructure/Persistence/DatabaseDependencyInjection.cs

@@ -18,10 +18,7 @@ namespace Musify.Infrastructure.Persistence
             serviceDescriptors.AddSingleton(serviceProvider =>
                 serviceProvider.GetRequiredService<IOptions<DatabaseConfiguration>>().Value);
 
-            serviceDescriptors.AddSingleton<AuditableEntityInterceptor>();
-
-            serviceDescriptors.AddDbContext<Database>((serviceProvider, options) =>
-                options.AddInterceptors(serviceProvider.GetRequiredService<AuditableEntityInterceptor>()));
+            serviceDescriptors.AddDbContext<Database>();
 
             serviceDescriptors.AddScoped<IDatabase>(serviceProvider => serviceProvider.GetRequiredService<Database>());
 

backend/Core/Musify.Infrastructure/Persistence/Migrations/20260923172640_TrackPlayedSeconds.cs

@@ -0,0 +1,52 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Musify.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class TrackPlayedSeconds : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "IsCounted",
+                table: "ListeningHistory",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "LastProgressAt",
+                table: "ListeningHistory",
+                type: "timestamp with time zone",
+                nullable: true);
+
+            migrationBuilder.AddColumn<double>(
+                name: "PlayedSeconds",
+                table: "ListeningHistory",
+                type: "double precision",
+                nullable: true);
+
+            migrationBuilder.Sql("UPDATE \"ListeningHistory\" SET \"IsCounted\" = TRUE;");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsCounted",
+                table: "ListeningHistory");
+
+            migrationBuilder.DropColumn(
+                name: "LastProgressAt",
+                table: "ListeningHistory");
+
+            migrationBuilder.DropColumn(
+                name: "PlayedSeconds",
+                table: "ListeningHistory");
+        }
+    }
+}

backend/Core/Musify.Infrastructure/Persistence/Migrations/20260923203135_AddTrackIsExplicit.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Musify.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTrackIsExplicit : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "IsExplicit",
+                table: "Tracks",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsExplicit",
+                table: "Tracks");
+        }
+    }
+}

backend/Core/Musify.Infrastructure/Persistence/Migrations/DatabaseModelSnapshot.cs

@@ -1,4 +1,4 @@
-
+// <auto-generated />
 using System;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
@@ -68,7 +68,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("Delivered");
 
-                    b.ToTable("InboxState", (string)null);
+                    b.ToTable("InboxState");
                 });
 
             modelBuilder.Entity("MassTransit.EntityFrameworkCoreIntegration.OutboxMessage", b =>
@@ -159,7 +159,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.HasIndex("InboxMessageId", "InboxConsumerId", "SequenceNumber")
                         .IsUnique();
 
-                    b.ToTable("OutboxMessage", (string)null);
+                    b.ToTable("OutboxMessage");
                 });
 
             modelBuilder.Entity("MassTransit.EntityFrameworkCoreIntegration.OutboxState", b =>
@@ -189,7 +189,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("Created");
 
-                    b.ToTable("OutboxState", (string)null);
+                    b.ToTable("OutboxState");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.Album", b =>
@@ -231,7 +231,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("OwnerUserId");
 
-                    b.ToTable("Albums", (string)null);
+                    b.ToTable("Albums");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.AlbumHasTrack", b =>
@@ -259,7 +259,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.HasIndex("AlbumId", "TrackId")
                         .IsUnique();
 
-                    b.ToTable("AlbumHasTrack", (string)null);
+                    b.ToTable("AlbumHasTrack");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.ListeningHistory", b =>
@@ -268,9 +268,18 @@ namespace Musify.Infrastructure.Persistence.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("uuid");
 
+                    b.Property<bool>("IsCounted")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime?>("LastProgressAt")
+                        .HasColumnType("timestamp with time zone");
+
                     b.Property<DateTime>("ListenedAt")
                         .HasColumnType("timestamp with time zone");
 
+                    b.Property<double?>("PlayedSeconds")
+                        .HasColumnType("double precision");
+
                     b.Property<Guid>("TrackId")
                         .HasColumnType("uuid");
 
@@ -283,7 +292,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("UserId");
 
-                    b.ToTable("ListeningHistory", (string)null);
+                    b.ToTable("ListeningHistory");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.Mix", b =>
@@ -317,7 +326,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("UserId", "Position");
 
-                    b.ToTable("Mixes", (string)null);
+                    b.ToTable("Mixes");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.MixItem", b =>
@@ -341,7 +350,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("MixId", "Position");
 
-                    b.ToTable("MixItems", (string)null);
+                    b.ToTable("MixItems");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.PlayList", b =>
@@ -385,7 +394,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("UserId");
 
-                    b.ToTable("PlayLists", (string)null);
+                    b.ToTable("PlayLists");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.PlayListHasTrack", b =>
@@ -412,7 +421,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("TrackId");
 
-                    b.ToTable("PlayListHasTrack", (string)null);
+                    b.ToTable("PlayListHasTrack");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.Track", b =>
@@ -427,6 +436,9 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.Property<double>("DurationSeconds")
                         .HasColumnType("double precision");
 
+                    b.Property<bool>("IsExplicit")
+                        .HasColumnType("boolean");
+
                     b.Property<int>("LifeCycleStatus")
                         .HasColumnType("integer");
 
@@ -450,7 +462,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("OwnerUserId");
 
-                    b.ToTable("Tracks", (string)null);
+                    b.ToTable("Tracks");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.TrackLike", b =>
@@ -475,7 +487,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.HasIndex("UserId", "TrackId")
                         .IsUnique();
 
-                    b.ToTable("TrackLikes", (string)null);
+                    b.ToTable("TrackLikes");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.TrackTag", b =>
@@ -495,7 +507,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.HasIndex("TrackId", "Tag")
                         .IsUnique();
 
-                    b.ToTable("TrackTags", (string)null);
+                    b.ToTable("TrackTags");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.Upload", b =>
@@ -524,7 +536,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasKey("Id");
 
-                    b.ToTable("Upload", (string)null);
+                    b.ToTable("Upload");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.UploadIntent", b =>
@@ -575,7 +587,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("UserId");
 
-                    b.ToTable("UploadIntents", (string)null);
+                    b.ToTable("UploadIntents");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.User", b =>
@@ -613,7 +625,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasKey("Id");
 
-                    b.ToTable("User", (string)null);
+                    b.ToTable("User");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.UserFollow", b =>
@@ -638,7 +650,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
                     b.HasIndex("FollowerId", "FollowedId")
                         .IsUnique();
 
-                    b.ToTable("UserFollows", (string)null);
+                    b.ToTable("UserFollows");
                 });
 
             modelBuilder.Entity("Musify.Domain.Entities.UserHasTrack", b =>
@@ -659,7 +671,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("UserId");
 
-                    b.ToTable("UserHasTrack", (string)null);
+                    b.ToTable("UserHasTrack");
                 });
 
             modelBuilder.Entity("Musify.Infrastructure.MassTransit.Sagas.AlbumProcessingState", b =>
@@ -686,7 +698,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasKey("CorrelationId");
 
-                    b.ToTable("AlbumProcessingState", (string)null);
+                    b.ToTable("AlbumProcessingState");
                 });
 
             modelBuilder.Entity("Musify.Infrastructure.MassTransit.Sagas.PlayListProcessingState", b =>
@@ -713,7 +725,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasKey("CorrelationId");
 
-                    b.ToTable("PlayListProcessingState", (string)null);
+                    b.ToTable("PlayListProcessingState");
                 });
 
             modelBuilder.Entity("Musify.Infrastructure.MassTransit.Sagas.TrackProcessingState", b =>
@@ -749,7 +761,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                     b.HasKey("CorrelationId");
 
-                    b.ToTable("TrackProcessingState", (string)null);
+                    b.ToTable("TrackProcessingState");
                 });
 
             modelBuilder.Entity("MassTransit.EntityFrameworkCoreIntegration.OutboxMessage", b =>
@@ -803,7 +815,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                             b1.HasKey("AlbumId");
 
-                            b1.ToTable("Albums", (string)null);
+                            b1.ToTable("Albums");
 
                             b1.WithOwner()
                                 .HasForeignKey("AlbumId");
@@ -896,32 +908,28 @@ namespace Musify.Infrastructure.Persistence.Migrations
                                 .HasColumnType("uuid");
 
                             b1.Property<string>("LargeName")
-                                .IsRequired()
                                 .HasMaxLength(64)
                                 .HasColumnType("character varying(64)")
                                 .HasColumnName("LargePictureName");
 
                             b1.Property<string>("MediumName")
-                                .IsRequired()
                                 .HasMaxLength(64)
                                 .HasColumnType("character varying(64)")
                                 .HasColumnName("MediumPictureName");
 
                             b1.Property<string>("OriginalName")
-                                .IsRequired()
                                 .HasMaxLength(64)
                                 .HasColumnType("character varying(64)")
                                 .HasColumnName("OriginalPictureName");
 
                             b1.Property<string>("SmallName")
-                                .IsRequired()
                                 .HasMaxLength(64)
                                 .HasColumnType("character varying(64)")
                                 .HasColumnName("SmallPictureName");
 
                             b1.HasKey("PlayListId");
 
-                            b1.ToTable("PlayLists", (string)null);
+                            b1.ToTable("PlayLists");
 
                             b1.WithOwner()
                                 .HasForeignKey("PlayListId");
@@ -992,7 +1000,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                             b1.HasKey("TrackId");
 
-                            b1.ToTable("Tracks", (string)null);
+                            b1.ToTable("Tracks");
 
                             b1.WithOwner()
                                 .HasForeignKey("TrackId");
@@ -1029,7 +1037,7 @@ namespace Musify.Infrastructure.Persistence.Migrations
 
                             b1.HasKey("TrackId");
 
-                            b1.ToTable("Tracks", (string)null);
+                            b1.ToTable("Tracks");
 
                             b1.WithOwner()
                                 .HasForeignKey("TrackId");

backend/Core/Musify.Infrastructure/Services/ServicesDependencyInjection.cs

@@ -74,6 +74,7 @@ namespace Musify.Infrastructure.Services
 
             serviceDescriptors.AddHangfireServer();
             serviceDescriptors.AddScoped<DailyMixGenerationJob>();
+            serviceDescriptors.AddScoped<ListeningHistoryCleanupJob>();
 
             return serviceDescriptors;
         }

backend/Hosts/Musify.Api/DataTransferObjects/Tracks/CreateTrackRequest.cs

@@ -6,4 +6,5 @@ public record CreateTrackRequest(
     string Title,
     Guid PictureIntentId,
     Guid AudioIntentId,
-    IReadOnlyCollection<Genre> Tags);
+    IReadOnlyCollection<Genre> Tags,
+    bool IsExplicit = false);

backend/Hosts/Musify.Api/DataTransferObjects/Tracks/RecordListeningProgressRequest.cs

@@ -0,0 +1,3 @@
+namespace Musify.Api.DataTransferObjects.Tracks;
+
+public record RecordListeningProgressRequest(double PlayedSeconds);

backend/Hosts/Musify.Api/Endpoints/GenreEndpoints.cs

@@ -0,0 +1,39 @@
+using Mediator;
+using Musify.Application.Genres;
+
+namespace Musify.Api.Endpoints;
+
+public static class GenreEndpoints
+{
+    public static IEndpointRouteBuilder MapGenreEndpoints(this IEndpointRouteBuilder app)
+    {
+        var group = app.MapGroup("/genres")
+            .WithTags("Genres");
+
+        group.MapGet("/", GetGenres)
+            .WithName("GetGenres")
+            .WithSummary("Get The Genres That Have At Least One Track, Most Populated First. Works Anonymously.")
+            .Produces<IReadOnlyList<GenreResponse>>();
+
+        group.MapGet("/available", GetAvailableGenres)
+            .WithName("GetAvailableGenres")
+            .WithSummary("Get Every Genre A Track Can Be Tagged With, Including The Genres It Cannot Be Combined With. Works Anonymously.")
+            .Produces<IReadOnlyList<AvailableGenreResponse>>();
+
+        return app;
+    }
+
+    private static async Task<IReadOnlyList<AvailableGenreResponse>> GetAvailableGenres(
+        IMediator mediator,
+        CancellationToken cancellationToken)
+    {
+        return await mediator.Send(new GetAvailableGenresQuery(), cancellationToken);
+    }
+
+    private static async Task<IReadOnlyList<GenreResponse>> GetGenres(
+        IMediator mediator,
+        CancellationToken cancellationToken)
+    {
+        return await mediator.Send(new GetGenresQuery(), cancellationToken);
+    }
+}

backend/Hosts/Musify.Api/Endpoints/TrackEndpoints.cs

@@ -1,4 +1,5 @@
 using Mediator;
+using Musify.Domain.ValueObjects;
 using Musify.Application.Tracks;
 using Musify.Application.Tracks.Responses;
 using Musify.Application.Shared;
@@ -19,8 +20,9 @@ public static class TrackEndpoints
 
         group.MapGet("/", GetTracks)
             .WithName("GetTracks")
-            .WithSummary("Get Paginated Tracks, Optionally Filtered By Name.")
-            .Produces<TracksSearchResponse>();
+            .WithSummary("Get Paginated Tracks, Optionally Filtered By Name And Genre.")
+            .Produces<TracksSearchResponse>()
+            .ProducesValidationProblem();
 
         group.MapGet("/{id}", GetTrackById)
             .WithName("GetTrackById")
@@ -41,6 +43,14 @@ public static class TrackEndpoints
             .Produces(StatusCodes.Status401Unauthorized)
             .Produces(StatusCodes.Status404NotFound);
 
+        group.MapPut("/listens/{listenId}/progress", RecordListeningProgress)
+            .WithName("RecordListeningProgress")
+            .WithSummary("Report The Total Seconds Actually Played For A Listen Started By The Stream Endpoint.")
+            .RequireAuthorization()
+            .Produces(StatusCodes.Status204NoContent)
+            .Produces(StatusCodes.Status401Unauthorized)
+            .Produces(StatusCodes.Status404NotFound);
+
         group.MapGet("/users/{userId}", GetTracksByUserId)
             .WithName("GetTracksByUserId")
             .WithSummary("Get Paginated Tracks For A User.")
@@ -84,10 +94,25 @@ public static class TrackEndpoints
         IMediator mediator,
         CancellationToken cancellationToken,
         string? name,
+        string? genre,
         int pageNumber = 1,
         int pageSize = 10)
     {
-        var result = await mediator.Send(new GetTracksQuery(name, pageNumber, pageSize), cancellationToken);
+        Genre? parsedGenre = null;
+        if (!string.IsNullOrWhiteSpace(genre))
+        {
+            if (!Enum.TryParse<Genre>(genre, ignoreCase: true, out var value) || !Enum.IsDefined(value))
+            {
+                return Results.ValidationProblem(new Dictionary<string, string[]>
+                {
+                    [nameof(genre)] = [$"'{genre}' is not a valid genre."]
+                });
+            }
+
+            parsedGenre = value;
+        }
+
+        var result = await mediator.Send(new GetTracksQuery(name, pageNumber, pageSize, parsedGenre), cancellationToken);
         return result.ToHttpResult();
     }
 
@@ -128,6 +153,19 @@ public static class TrackEndpoints
         return result.ToHttpResult();
     }
 
+    private static async Task<IResult> RecordListeningProgress(
+        IMediator mediator,
+        CurrentUser currentUser,
+        Guid listenId,
+        RecordListeningProgressRequest request,
+        CancellationToken cancellationToken)
+    {
+        var result = await mediator.Send(
+            new RecordListeningProgressCommand(currentUser.RequiredId, listenId, request.PlayedSeconds),
+            cancellationToken);
+        return result.ToHttpResult();
+    }
+
     private static async Task<IResult> GetTracksByUserId(
         IMediator mediator,
         long userId,
@@ -147,7 +185,7 @@ public static class TrackEndpoints
         CancellationToken cancellationToken)
     {
         var result = await mediator.Send(
-            new CreateTrackCommand(currentUser.RequiredId, request.Title, request.PictureIntentId, request.AudioIntentId, request.Tags),
+            new CreateTrackCommand(currentUser.RequiredId, request.Title, request.PictureIntentId, request.AudioIntentId, request.Tags, request.IsExplicit),
             cancellationToken);
 
         return result.ToCreatedResult(track => $"/tracks/{track.Id}");

backend/Hosts/Musify.Api/Endpoints/UserEndpoints.cs

@@ -21,7 +21,7 @@ public static class UserEndpoints
         group.MapGet("/", GetUsers)
             .WithName("GetUsers")
             .WithSummary("Get Paginated Users.")
-            .Produces<PaginatedResponse<UserApplicationResponse>>();
+            .Produces<PaginatedResponse<UserSummaryResponse>>();
 
         group.MapGet("/{id}", GetUserById)
             .WithName("GetUserById")
@@ -52,6 +52,19 @@ public static class UserEndpoints
             .Produces<UserProfileResponse>()
             .Produces(StatusCodes.Status404NotFound);
 
+        group.MapGet("/{id}/followers", GetFollowers)
+            .WithName("GetUserFollowers")
+            .WithSummary("Get The Users Following A User. Visible To The User And To Mutual Followers.")
+            .Produces<PaginatedResponse<UserSummaryResponse>>()
+            .Produces(StatusCodes.Status403Forbidden)
+            .Produces(StatusCodes.Status404NotFound);
+
+        group.MapGet("/{id}/following", GetFollowing)
+            .WithName("GetUserFollowing")
+            .WithSummary("Get The Users A User Follows.")
+            .Produces<PaginatedResponse<UserSummaryResponse>>()
+            .Produces(StatusCodes.Status404NotFound);
+
         group.MapGet("/{id}/is-following", IsFollowing)
             .WithName("IsFollowingUser")
             .WithSummary("Check Whether The Current User Follows Another User.")
@@ -88,12 +101,13 @@ public static class UserEndpoints
 
     private static async Task<IResult> GetUsers(
         IMediator mediator,
+        CurrentUser currentUser,
         CancellationToken cancellationToken,
         string? usernameSearch,
         int pageNumber = 1,
         int pageSize = 10)
     {
-        var result = await mediator.Send(new GetUsersQuery(pageNumber, pageSize, usernameSearch), cancellationToken);
+        var result = await mediator.Send(new GetUsersQuery(pageNumber, pageSize, usernameSearch, currentUser.Id), cancellationToken);
         return result.ToHttpResult();
     }
 
@@ -133,10 +147,35 @@ public static class UserEndpoints
 
     private static async Task<IResult> GetUserProfile(
         IMediator mediator,
+        CurrentUser currentUser,
         long id,
         CancellationToken cancellationToken)
     {
-        var result = await mediator.Send(new GetUserProfileQuery(id), cancellationToken);
+        var result = await mediator.Send(new GetUserProfileQuery(id, currentUser.Id), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> GetFollowers(
+        IMediator mediator,
+        CurrentUser currentUser,
+        long id,
+        CancellationToken cancellationToken,
+        int pageNumber = 1,
+        int pageSize = 20)
+    {
+        var result = await mediator.Send(new GetUserFollowersQuery(currentUser.Id, id, pageNumber, pageSize), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> GetFollowing(
+        IMediator mediator,
+        CurrentUser currentUser,
+        long id,
+        CancellationToken cancellationToken,
+        int pageNumber = 1,
+        int pageSize = 20)
+    {
+        var result = await mediator.Send(new GetUserFollowingQuery(currentUser.Id, id, pageNumber, pageSize), cancellationToken);
         return result.ToHttpResult();
     }
 

backend/Hosts/Musify.Api/Program.cs

@@ -40,6 +40,7 @@ app.UseAuthorization();
 app
     .MapAlbumEndpoints()
     .MapConfigEndpoints()
+    .MapGenreEndpoints()
     .MapLikeEndpoints()
     .MapMixEndpoints()
     .MapPlayListEndpoints()

backend/Hosts/Musify.Worker/Program.cs

@@ -41,6 +41,11 @@ using (var scope = host.Services.CreateScope())
         job => job.RunAsync(CancellationToken.None),
         Cron.Daily(),
         new RecurringJobOptions { TimeZone = TimeZoneInfo.Utc });
+    recurringJobManager.AddOrUpdate<ListeningHistoryCleanupJob>(
+        "listening-history-cleanup",
+        job => job.RunAsync(CancellationToken.None),
+        Cron.Daily(3),
+        new RecurringJobOptions { TimeZone = TimeZoneInfo.Utc });
 }
 
 host.Run();

backend/Tests/Musify.Api.Tests/Endpoints/GenreEndpointsTests.cs

@@ -0,0 +1,106 @@
+using System.Net;
+using System.Net.Http.Json;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Microsoft.Extensions.DependencyInjection;
+using Musify.Api.Tests.TestSupport;
+using Musify.Application.Genres;
+using Musify.Application.Tracks.Responses;
+using Musify.Domain.Entities;
+using Musify.Domain.ValueObjects;
+using Musify.Infrastructure.Persistence;
+using Xunit;
+
+namespace Musify.Api.Tests.Endpoints
+{
+    [Collection(ApiCollection.Name)]
+    public sealed class GenreEndpointsTests(ApiTestFixture fixture)
+    {
+        private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web)
+        {
+            Converters = { new JsonStringEnumConverter() }
+        };
+
+        private async Task<string> SeedTrackAsync(Genre genre)
+        {
+            using var scope = fixture.Services.CreateScope();
+            var database = scope.ServiceProvider.GetRequiredService<Database>();
+            var owner = new User { Id = Random.Shared.NextInt64(1, long.MaxValue), Name = "genre-owner", NormalizedName = "GENRE-OWNER" };
+            var title = $"Genre track {Guid.NewGuid():N}";
+            var track = new Track
+            {
+                Title = title,
+                NormalizedTitle = title.ToUpperInvariant(),
+                OwnerUserId = owner.Id,
+                Owner = owner,
+                Tags = [new TrackTag { TrackId = Guid.Empty, Tag = genre }]
+            };
+            foreach (var tag in track.Tags)
+                tag.TrackId = track.Id;
+            database.Users.Add(owner);
+            database.Tracks.Add(track);
+            database.UserHasTracks.Add(new UserHasTrack { UserId = owner.Id, TrackId = track.Id });
+            await database.SaveChangesAsync(TestContext.Current.CancellationToken);
+            return title;
+        }
+
+        [Fact]
+        public async Task GetGenres_Anonymous_ListsGenresInUse()
+        {
+            await SeedTrackAsync(Genre.Funk);
+
+            var response = await fixture.CreateAnonymousClient().GetAsync("/genres", TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            var body = await response.Content.ReadFromJsonAsync<List<GenreResponse>>(JsonOptions, TestContext.Current.CancellationToken);
+            Assert.Contains(body!, g => g.Genre == Genre.Funk && g.TrackCount >= 1);
+        }
+
+        [Fact]
+        public async Task GetAvailableGenres_Anonymous_ListsEveryGenreWithIncompatibilities()
+        {
+            var response = await fixture.CreateAnonymousClient().GetAsync("/genres/available", TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            var body = await response.Content.ReadFromJsonAsync<List<AvailableGenreResponse>>(JsonOptions, TestContext.Current.CancellationToken);
+            Assert.Equal(Enum.GetValues<Genre>().Length, body!.Count);
+            Assert.Contains(Genre.Lofi, body.Single(g => g.Genre == Genre.Metal).IncompatibleWith);
+        }
+
+        [Theory]
+        [InlineData("Nope")]
+        [InlineData("999")]
+        public async Task GetTracks_UnknownGenre_ReturnsBadRequest(string genre)
+        {
+            var response = await fixture.CreateAnonymousClient().GetAsync($"/tracks?genre={genre}", TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
+        }
+
+        [Fact]
+        public async Task GetTracks_GenreQuery_IsCaseInsensitive()
+        {
+            var title = await SeedTrackAsync(Genre.Blues);
+
+            var response = await fixture.CreateAnonymousClient().GetAsync("/tracks?genre=blues&pageSize=100", TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            var body = await response.Content.ReadFromJsonAsync<TracksSearchResponse>(JsonOptions, TestContext.Current.CancellationToken);
+            Assert.Contains(body!.Items, item => item.Track.Title == title);
+        }
+
+        [Fact]
+        public async Task GetTracks_GenreQuery_FiltersByTag()
+        {
+            var title = await SeedTrackAsync(Genre.Ambient);
+            await SeedTrackAsync(Genre.Techno);
+
+            var response = await fixture.CreateAnonymousClient().GetAsync("/tracks?genre=Ambient&pageSize=100", TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            var body = await response.Content.ReadFromJsonAsync<TracksSearchResponse>(JsonOptions, TestContext.Current.CancellationToken);
+            Assert.Contains(body!.Items, item => item.Track.Title == title);
+            Assert.All(body.Items, item => Assert.Contains(Genre.Ambient, item.Track.Tags));
+        }
+    }
+}

backend/Tests/Musify.Api.Tests/Endpoints/ListeningProgressEndpointsTests.cs

@@ -0,0 +1,109 @@
+using System.Net;
+using System.Net.Http.Json;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Musify.Api.DataTransferObjects.Tracks;
+using Musify.Api.DataTransferObjects.Users;
+using Musify.Domain.Entities;
+using Musify.Infrastructure.Persistence;
+using Xunit;
+using Musify.Api.Tests.TestSupport;
+
+namespace Musify.Api.Tests.Endpoints
+{
+    [Collection(ApiCollection.Name)]
+    public sealed class ListeningProgressEndpointsTests(ApiTestFixture fixture)
+    {
+        private async Task<long> CreateUserAsync()
+        {
+            var userId = Random.Shared.NextInt64(1, long.MaxValue);
+            var response = await fixture.CreateAnonymousClient().PostAsJsonAsync(
+                "/users", new CreateUserRequest(userId, $"user-{userId}", null, null), TestContext.Current.CancellationToken);
+            response.EnsureSuccessStatusCode();
+            return userId;
+        }
+
+        private async Task<Guid> SeedListenAsync(long userId, double durationSeconds)
+        {
+            using var scope = fixture.Services.CreateScope();
+            var database = scope.ServiceProvider.GetRequiredService<Database>();
+            var owner = await database.Users.SingleAsync(u => u.Id == userId, TestContext.Current.CancellationToken);
+            var track = new Track
+            {
+                Title = "Progress track",
+                NormalizedTitle = "PROGRESS TRACK",
+                OwnerUserId = owner.Id,
+                Owner = owner,
+                DurationSeconds = durationSeconds
+            };
+            var listen = new ListeningHistory
+            {
+                UserId = userId,
+                TrackId = track.Id,
+                ListenedAt = DateTime.UtcNow.AddMinutes(-10)
+            };
+            database.Tracks.Add(track);
+            database.ListeningHistories.Add(listen);
+            await database.SaveChangesAsync(TestContext.Current.CancellationToken);
+            return listen.Id;
+        }
+
+        private async Task<ListeningHistory> LoadListenAsync(Guid listenId)
+        {
+            using var scope = fixture.Services.CreateScope();
+            var database = scope.ServiceProvider.GetRequiredService<Database>();
+            return await database.ListeningHistories.AsNoTracking()
+                .SingleAsync(l => l.Id == listenId, TestContext.Current.CancellationToken);
+        }
+
+        [Fact]
+        public async Task PutProgress_Anonymous_ReturnsUnauthorized()
+        {
+            var response = await fixture.CreateAnonymousClient().PutAsJsonAsync(
+                $"/tracks/listens/{Guid.NewGuid()}/progress", new RecordListeningProgressRequest(10), TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
+        }
+
+        [Fact]
+        public async Task PutProgress_OwnListen_StoresSecondsAndMarksCounted()
+        {
+            var userId = await CreateUserAsync();
+            var listenId = await SeedListenAsync(userId, durationSeconds: 200);
+
+            var response = await fixture.CreateAuthenticatedClient(userId).PutAsJsonAsync(
+                $"/tracks/listens/{listenId}/progress", new RecordListeningProgressRequest(45), TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.NoContent, response.StatusCode);
+            var stored = await LoadListenAsync(listenId);
+            Assert.Equal(45, stored.PlayedSeconds);
+            Assert.True(stored.IsCounted);
+        }
+
+        [Fact]
+        public async Task PutProgress_OtherUsersListen_ReturnsNotFound()
+        {
+            var ownerId = await CreateUserAsync();
+            var otherId = await CreateUserAsync();
+            var listenId = await SeedListenAsync(ownerId, durationSeconds: 200);
+
+            var response = await fixture.CreateAuthenticatedClient(otherId).PutAsJsonAsync(
+                $"/tracks/listens/{listenId}/progress", new RecordListeningProgressRequest(45), TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
+            Assert.Null((await LoadListenAsync(listenId)).PlayedSeconds);
+        }
+
+        [Fact]
+        public async Task PutProgress_NegativeSeconds_ReturnsBadRequest()
+        {
+            var userId = await CreateUserAsync();
+            var listenId = await SeedListenAsync(userId, durationSeconds: 200);
+
+            var response = await fixture.CreateAuthenticatedClient(userId).PutAsJsonAsync(
+                $"/tracks/listens/{listenId}/progress", new RecordListeningProgressRequest(-5), TestContext.Current.CancellationToken);
+
+            Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Albums/GetRecentlyListenedAlbumsQueryHandlerTests.cs

@@ -57,5 +57,25 @@ namespace Musify.Application.Tests.Albums
             Assert.False(result.IsError);
             Assert.Equal(2, result.Value.Count);
         }
+
+        [Fact]
+        public async Task Handle_UncountedListens_AreIgnored()
+        {
+            var owner = TestEntities.User();
+            var countedAlbum = TestEntities.Album(owner.Id, "Counted album");
+            var skippedAlbum = TestEntities.Album(owner.Id, "Skipped album");
+            var countedTrack = TestEntities.Track(owner, "In counted");
+            var skippedTrack = TestEntities.Track(owner, "In skipped");
+            await SeedAsync(
+                owner, countedAlbum, skippedAlbum, countedTrack, skippedTrack,
+                new AlbumHasTrack { AlbumId = countedAlbum.Id, TrackId = countedTrack.Id, TrackNumber = 1 },
+                new AlbumHasTrack { AlbumId = skippedAlbum.Id, TrackId = skippedTrack.Id, TrackNumber = 1 },
+                TestEntities.ListeningHistory(owner.Id, countedTrack.Id, DateTime.UtcNow.AddDays(-1), playedSeconds: 120),
+                TestEntities.ListeningHistory(owner.Id, skippedTrack.Id, DateTime.UtcNow, playedSeconds: 1, isCounted: false));
+
+            var result = await CreateHandler().Handle(new GetRecentlyListenedAlbumsQuery(owner.Id, Limit: 10), TestContext.Current.CancellationToken);
+
+            Assert.Equal(["Counted album"], result.Value.Select(album => album.Title));
+        }
     }
 }

backend/Tests/Musify.Application.Tests/Genres/GetAvailableGenresQueryHandlerTests.cs

@@ -0,0 +1,32 @@
+using Musify.Application.Genres;
+using Musify.Domain.ValueObjects;
+using Xunit;
+
+namespace Musify.Application.Tests.Genres
+{
+    public sealed class GetAvailableGenresQueryHandlerTests
+    {
+        private static async Task<IReadOnlyList<AvailableGenreResponse>> RunAsync() =>
+            await new GetAvailableGenresQueryHandler().Handle(new GetAvailableGenresQuery(), TestContext.Current.CancellationToken);
+
+        [Fact]
+        public async Task Handle_ReturnsEveryGenre()
+        {
+            var result = await RunAsync();
+
+            Assert.Equal(Enum.GetValues<Genre>(), result.Select(r => r.Genre));
+        }
+
+        [Fact]
+        public async Task Handle_ListsIncompatibleGenresSymmetrically()
+        {
+            var result = await RunAsync();
+
+            var metal = result.Single(r => r.Genre == Genre.Metal);
+            var lofi = result.Single(r => r.Genre == Genre.Lofi);
+            Assert.Contains(Genre.Lofi, metal.IncompatibleWith);
+            Assert.Contains(Genre.Metal, lofi.IncompatibleWith);
+            Assert.Empty(result.Single(r => r.Genre == Genre.Pop).IncompatibleWith);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Genres/GetGenresQueryHandlerTests.cs

@@ -0,0 +1,69 @@
+using Musify.Application.Genres;
+using Musify.Application.Tests.TestSupport;
+using Musify.Domain.Entities;
+using Musify.Domain.ValueObjects;
+using Xunit;
+
+namespace Musify.Application.Tests.Genres
+{
+    public sealed class GetGenresQueryHandlerTests : HandlerTestBase
+    {
+        private GetGenresQueryHandler CreateHandler() => new(Database);
+
+        [Fact]
+        public async Task Handle_NoTracks_ReturnsEmpty()
+        {
+            var result = await CreateHandler().Handle(new GetGenresQuery(), TestContext.Current.CancellationToken);
+
+            Assert.Empty(result);
+        }
+
+        [Fact]
+        public async Task Handle_ReturnsOnlyGenresInUse_MostPopulatedFirst()
+        {
+            var owner = TestEntities.User();
+            var rockA = TestEntities.Track(owner, "Rock A", tags: [Genre.Rock]);
+            var rockB = TestEntities.Track(owner, "Rock B", tags: [Genre.Rock, Genre.Indie]);
+            var jazz = TestEntities.Track(owner, "Jazz", tags: [Genre.Jazz]);
+            await SeedAsync(
+                owner, rockA, rockB, jazz,
+                new UserHasTrack { UserId = owner.Id, TrackId = rockA.Id },
+                new UserHasTrack { UserId = owner.Id, TrackId = rockB.Id },
+                new UserHasTrack { UserId = owner.Id, TrackId = jazz.Id });
+
+            var result = await CreateHandler().Handle(new GetGenresQuery(), TestContext.Current.CancellationToken);
+
+            Assert.Equal(
+                [(Genre.Rock, 2), (Genre.Jazz, 1), (Genre.Indie, 1)],
+                result.Select(r => (r.Genre, r.TrackCount)));
+        }
+
+        [Fact]
+        public async Task Handle_TrackInSeveralLibraries_IsCountedOnce()
+        {
+            var owner = TestEntities.User();
+            var other = TestEntities.User(id: 2, name: "other-user");
+            var track = TestEntities.Track(owner, tags: [Genre.Pop]);
+            await SeedAsync(
+                owner, other, track,
+                new UserHasTrack { UserId = owner.Id, TrackId = track.Id },
+                new UserHasTrack { UserId = other.Id, TrackId = track.Id });
+
+            var result = await CreateHandler().Handle(new GetGenresQuery(), TestContext.Current.CancellationToken);
+
+            Assert.Equal(1, Assert.Single(result).TrackCount);
+        }
+
+        [Fact]
+        public async Task Handle_TrackNotInAnyLibrary_IsIgnored()
+        {
+            var owner = TestEntities.User();
+            var track = TestEntities.Track(owner, tags: [Genre.Metal]);
+            await SeedAsync(owner, track);
+
+            var result = await CreateHandler().Handle(new GetGenresQuery(), TestContext.Current.CancellationToken);
+
+            Assert.Empty(result);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Mixes/GenerateMixesForUserCommandHandlerTests.cs

@@ -72,5 +72,21 @@ namespace Musify.Application.Tests.Mixes
                 .ToListAsync(TestContext.Current.CancellationToken);
             Assert.All(discoveryItems, item => Assert.Equal(unheardTrack.Id, item.TrackId));
         }
+
+        [Fact]
+        public async Task Handle_TrackWithOnlyUncountedListens_IsTreatedAsUnheard()
+        {
+            var user = TestEntities.User();
+            var skipped = TestEntities.Track(user, "Only skipped");
+            await SeedAsync(
+                user, skipped,
+                new UserHasTrack { UserId = user.Id, TrackId = skipped.Id },
+                TestEntities.ListeningHistory(user.Id, skipped.Id, playedSeconds: 3, isCounted: false));
+
+            await CreateHandler().Handle(new GenerateMixesForUserCommand(user.Id), TestContext.Current.CancellationToken);
+
+            var mixes = await Database.Mixes.ToListAsync(TestContext.Current.CancellationToken);
+            Assert.Contains(mixes, mix => mix.Title == "Descubrimiento");
+        }
     }
 }

backend/Tests/Musify.Application.Tests/Shared/TrackApplicationResponseTests.cs

@@ -17,6 +17,17 @@ namespace Musify.Application.Tests.Shared
             Assert.Equal("The Owner", response.Artist);
             Assert.Equal(owner.Id, response.OwnerUserId);
             Assert.Equal(3, response.ListensCount);
+            Assert.False(response.IsExplicit);
+        }
+
+        [Fact]
+        public void FromEntity_CopiesExplicitFlag()
+        {
+            var track = TestEntities.Track(TestEntities.User(), isExplicit: true);
+
+            var response = TrackApplicationResponse.FromEntity(track, listensCount: 0);
+
+            Assert.True(response.IsExplicit);
         }
     }
 }

backend/Tests/Musify.Application.Tests/TestSupport/TestEntities.cs

@@ -56,7 +56,8 @@ namespace Musify.Application.Tests.TestSupport
             TrackPictures? pictures = null,
             TrackAudio? audio = null,
             LifeCycleStatus lifeCycleStatus = LifeCycleStatus.Active,
-            IEnumerable<Genre>? tags = null)
+            IEnumerable<Genre>? tags = null,
+            bool isExplicit = false)
         {
             var track = new Track
             {
@@ -64,6 +65,7 @@ namespace Musify.Application.Tests.TestSupport
                 NormalizedTitle = title.ToUpperInvariant(),
                 DurationSeconds = durationSeconds,
                 LifeCycleStatus = lifeCycleStatus,
+                IsExplicit = isExplicit,
                 OwnerUserId = owner.Id,
                 Owner = owner,
                 Pictures = pictures ?? ProcessedPictures(),
@@ -177,12 +179,16 @@ namespace Musify.Application.Tests.TestSupport
         public static ListeningHistory ListeningHistory(
             long userId,
             Guid trackId,
-            DateTime? listenedAt = null) =>
+            DateTime? listenedAt = null,
+            double? playedSeconds = null,
+            bool isCounted = true) =>
             new()
             {
                 UserId = userId,
                 TrackId = trackId,
-                ListenedAt = listenedAt ?? DateTime.UtcNow
+                ListenedAt = listenedAt ?? DateTime.UtcNow,
+                PlayedSeconds = playedSeconds,
+                IsCounted = isCounted
             };
     }
 }

backend/Tests/Musify.Application.Tests/Tracks/CreateTrackCommandHandlerTests.cs

@@ -58,6 +58,26 @@ namespace Musify.Application.Tests.Tracks
             Assert.Equal(ProcessingStatus.Pending, stored.Audio.TranscodeStatus);
         }
 
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public async Task Handle_StoresExplicitFlag(bool isExplicit)
+        {
+            var user = TestEntities.User();
+            var (picture, audio) = SeedIntents(user.Id);
+            await SeedAsync(user, picture, audio);
+
+            var command = new CreateTrackCommand(user.Id, "My Song", picture.Id, audio.Id, [Genre.Pop], isExplicit);
+
+            var result = await CreateHandler().Handle(command, TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            Assert.Equal(isExplicit, result.Value.IsExplicit);
+            var stored = await Database.Tracks.FindAsync([result.Value.Id], TestContext.Current.CancellationToken);
+            Assert.NotNull(stored);
+            Assert.Equal(isExplicit, stored.IsExplicit);
+        }
+
         [Fact]
         public async Task Handle_NoTags_ReturnsValidationError()
         {

backend/Tests/Musify.Application.Tests/Tracks/DeleteStaleUncountedListensCommandHandlerTests.cs

@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Tests.TestSupport;
+using Musify.Application.Tracks;
+using Xunit;
+
+namespace Musify.Application.Tests.Tracks
+{
+    public sealed class DeleteStaleUncountedListensCommandHandlerTests : HandlerTestBase
+    {
+        private DeleteStaleUncountedListensCommandHandler CreateHandler() =>
+            new(Database, NoOpLogger<DeleteStaleUncountedListensCommandHandler>());
+
+        [Fact]
+        public async Task Handle_DeletesOnlyOldUncountedListens()
+        {
+            var owner = TestEntities.User();
+            var track = TestEntities.Track(owner);
+            var oldUncounted = TestEntities.ListeningHistory(owner.Id, track.Id, DateTime.UtcNow.AddDays(-9), playedSeconds: 2, isCounted: false);
+            var oldCounted = TestEntities.ListeningHistory(owner.Id, track.Id, DateTime.UtcNow.AddDays(-9), playedSeconds: 100);
+            var recentUncounted = TestEntities.ListeningHistory(owner.Id, track.Id, DateTime.UtcNow.AddDays(-2), playedSeconds: 2, isCounted: false);
+            await SeedAsync(owner, track, oldUncounted, oldCounted, recentUncounted);
+
+            var deleted = await CreateHandler().Handle(new DeleteStaleUncountedListensCommand(), TestContext.Current.CancellationToken);
+
+            Assert.Equal(1, deleted);
+            var remaining = await Database.ListeningHistories.Select(l => l.Id).ToListAsync(TestContext.Current.CancellationToken);
+            Assert.DoesNotContain(oldUncounted.Id, remaining);
+            Assert.Contains(oldCounted.Id, remaining);
+            Assert.Contains(recentUncounted.Id, remaining);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Tracks/GetListeningHistoryQueryHandlerTests.cs

@@ -35,5 +35,21 @@ namespace Musify.Application.Tests.Tracks
 
             Assert.Empty(result);
         }
+
+        [Fact]
+        public async Task Handle_UncountedListens_AreIgnored()
+        {
+            var owner = TestEntities.User();
+            var counted = TestEntities.Track(owner, "Counted");
+            var skipped = TestEntities.Track(owner, "Skipped");
+            await SeedAsync(
+                owner, counted, skipped,
+                TestEntities.ListeningHistory(owner.Id, counted.Id, DateTime.UtcNow.AddMinutes(-5), playedSeconds: 90),
+                TestEntities.ListeningHistory(owner.Id, skipped.Id, DateTime.UtcNow, playedSeconds: 2, isCounted: false));
+
+            var result = await CreateHandler().Handle(new GetListeningHistoryQuery(owner.Id), TestContext.Current.CancellationToken);
+
+            Assert.Equal(["Counted"], result.Select(track => track.Title));
+        }
     }
 }

backend/Tests/Musify.Application.Tests/Tracks/GetTrackByIdQueryHandlerTests.cs

@@ -33,5 +33,21 @@ namespace Musify.Application.Tests.Tracks
 
             Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
         }
+
+        [Fact]
+        public async Task Handle_ListensCount_OnlyCountsCountedListens()
+        {
+            var owner = TestEntities.User();
+            var track = TestEntities.Track(owner);
+            await SeedAsync(
+                owner, track,
+                TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 100),
+                TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 100),
+                TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 1, isCounted: false));
+
+            var result = await CreateHandler().Handle(new GetTrackByIdQuery(track.Id), TestContext.Current.CancellationToken);
+
+            Assert.Equal(2, result.Value.ListensCount);
+        }
     }
 }

backend/Tests/Musify.Application.Tests/Tracks/GetTrackStreamQueryHandlerTests.cs

@@ -45,6 +45,9 @@ namespace Musify.Application.Tests.Tracks
             var history = Assert.Single(await Database.ListeningHistories.ToListAsync(TestContext.Current.CancellationToken));
             Assert.Equal(owner.Id, history.UserId);
             Assert.Equal(track.Id, history.TrackId);
+            Assert.Equal(history.Id, result.Value.ListenId);
+            Assert.False(history.IsCounted);
+            Assert.Null(history.PlayedSeconds);
         }
 
         [Fact]

backend/Tests/Musify.Application.Tests/Tracks/GetTracksQueryHandlerTests.cs

@@ -1,5 +1,6 @@
 using Musify.Application.Tests.TestSupport;
 using Musify.Application.Tracks;
+using Musify.Domain.ValueObjects;
 using Xunit;
 
 namespace Musify.Application.Tests.Tracks
@@ -43,5 +44,23 @@ namespace Musify.Application.Tests.Tracks
             var item = Assert.Single(result.Value.Items);
             Assert.Equal("Bohemian Rhapsody", item.Track.Title);
         }
+
+        [Fact]
+        public async Task Handle_GenreFilter_ReturnsOnlyTracksWithThatTag()
+        {
+            var owner = TestEntities.User();
+            var rock = TestEntities.Track(owner, "Loud", tags: [Genre.Rock, Genre.Indie]);
+            var jazz = TestEntities.Track(owner, "Smooth", tags: [Genre.Jazz]);
+            await SeedAsync(
+                owner, rock, jazz,
+                new Musify.Domain.Entities.UserHasTrack { UserId = owner.Id, TrackId = rock.Id },
+                new Musify.Domain.Entities.UserHasTrack { UserId = owner.Id, TrackId = jazz.Id });
+
+            var result = await CreateHandler().Handle(new GetTracksQuery(null, 1, 10, Genre.Indie), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            var item = Assert.Single(result.Value.Items);
+            Assert.Equal("Loud", item.Track.Title);
+        }
     }
 }

backend/Tests/Musify.Application.Tests/Tracks/RecordListeningProgressCommandHandlerTests.cs

@@ -0,0 +1,127 @@
+using ErrorOr;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Tests.TestSupport;
+using Musify.Application.Tracks;
+using Musify.Domain.Entities;
+using Xunit;
+
+namespace Musify.Application.Tests.Tracks
+{
+    public sealed class RecordListeningProgressCommandHandlerTests : HandlerTestBase
+    {
+        private RecordListeningProgressCommandHandler CreateHandler() => new(Database);
+
+        private async Task<ListeningHistory> ReloadAsync(Guid id) =>
+            await Database.ListeningHistories.AsNoTracking()
+                .SingleAsync(l => l.Id == id, TestContext.Current.CancellationToken);
+
+        private async Task<(User User, ListeningHistory Listen)> SeedListenAsync(
+            double durationSeconds, DateTime listenedAt)
+        {
+            var user = TestEntities.User();
+            var track = TestEntities.Track(user, durationSeconds: durationSeconds);
+            var listen = TestEntities.ListeningHistory(user.Id, track.Id, listenedAt, isCounted: false);
+            await SeedAsync(user, track, listen);
+            return (user, listen);
+        }
+
+        [Fact]
+        public async Task Handle_BelowThreshold_StoresSecondsWithoutCounting()
+        {
+            var (user, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-60));
+
+            var result = await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, 10), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            var stored = await ReloadAsync(listen.Id);
+            Assert.Equal(10, stored.PlayedSeconds);
+            Assert.False(stored.IsCounted);
+        }
+
+        [Fact]
+        public async Task Handle_ReachesThirtySeconds_MarksAsCounted()
+        {
+            var (user, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-60));
+
+            await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, 30), TestContext.Current.CancellationToken);
+
+            Assert.True((await ReloadAsync(listen.Id)).IsCounted);
+        }
+
+        [Fact]
+        public async Task Handle_ShortTrack_CountsAtHalfDuration()
+        {
+            var (user, listen) = await SeedListenAsync(20, DateTime.UtcNow.AddSeconds(-60));
+
+            await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, 10), TestContext.Current.CancellationToken);
+
+            Assert.True((await ReloadAsync(listen.Id)).IsCounted);
+        }
+
+        [Fact]
+        public async Task Handle_LowerValueThanStored_KeepsHighest()
+        {
+            var (user, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-60));
+            var handler = CreateHandler();
+
+            await handler.Handle(new RecordListeningProgressCommand(user.Id, listen.Id, 40), TestContext.Current.CancellationToken);
+            await handler.Handle(new RecordListeningProgressCommand(user.Id, listen.Id, 15), TestContext.Current.CancellationToken);
+
+            var stored = await ReloadAsync(listen.Id);
+            Assert.Equal(40, stored.PlayedSeconds);
+            Assert.True(stored.IsCounted);
+        }
+
+        [Fact]
+        public async Task Handle_MoreThanElapsedClock_IsCappedToElapsedTime()
+        {
+            var (user, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-20));
+
+            await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, 150), TestContext.Current.CancellationToken);
+
+            var stored = await ReloadAsync(listen.Id);
+            Assert.InRange(stored.PlayedSeconds!.Value, 24, 27);
+        }
+
+        [Fact]
+        public async Task Handle_MoreThanTrackDuration_IsCappedToDuration()
+        {
+            var (user, listen) = await SeedListenAsync(50, DateTime.UtcNow.AddMinutes(-30));
+
+            await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, 900), TestContext.Current.CancellationToken);
+
+            Assert.Equal(52, (await ReloadAsync(listen.Id)).PlayedSeconds);
+        }
+
+        [Fact]
+        public async Task Handle_OtherUsersListen_ReturnsNotFound()
+        {
+            var (_, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-60));
+
+            var result = await CreateHandler().Handle(
+                new RecordListeningProgressCommand(long.MaxValue, listen.Id, 10), TestContext.Current.CancellationToken);
+
+            Assert.True(result.IsError);
+            Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
+        }
+
+        [Theory]
+        [InlineData(-1)]
+        [InlineData(double.NaN)]
+        [InlineData(double.PositiveInfinity)]
+        public async Task Handle_InvalidSeconds_ReturnsValidationError(double seconds)
+        {
+            var (user, listen) = await SeedListenAsync(200, DateTime.UtcNow.AddSeconds(-60));
+
+            var result = await CreateHandler().Handle(
+                new RecordListeningProgressCommand(user.Id, listen.Id, seconds), TestContext.Current.CancellationToken);
+
+            Assert.Equal(ErrorType.Validation, result.FirstError.Type);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Users/GetListeningStatsQueryHandlerTests.cs

@@ -40,6 +40,37 @@ namespace Musify.Application.Tests.Users
             Assert.Equal(500, result.SecondsThisWeek);
         }
 
+        [Fact]
+        public async Task Handle_PlayedSeconds_SumsPlayedTimeInsteadOfDuration()
+        {
+            var user = TestEntities.User();
+            var track = TestEntities.Track(user, durationSeconds: 200);
+            await SeedAsync(
+                user, track,
+                TestEntities.ListeningHistory(user.Id, track.Id, playedSeconds: 200),
+                TestEntities.ListeningHistory(user.Id, track.Id, playedSeconds: 12, isCounted: false));
+
+            var result = await CreateHandler().Handle(new GetListeningStatsQuery(user.Id), TestContext.Current.CancellationToken);
+
+            Assert.Equal(212, result.SecondsThisWeek);
+        }
+
+        [Fact]
+        public async Task Handle_UncountedListens_AreExcludedFromTracksAndStreak()
+        {
+            var user = TestEntities.User();
+            var track = TestEntities.Track(user);
+            await SeedAsync(
+                user, track,
+                TestEntities.ListeningHistory(user.Id, track.Id, playedSeconds: 3, isCounted: false));
+
+            var result = await CreateHandler().Handle(new GetListeningStatsQuery(user.Id), TestContext.Current.CancellationToken);
+
+            Assert.Equal(0, result.TracksThisWeek);
+            Assert.Equal(0, result.StreakDays);
+            Assert.Equal(3, result.SecondsThisWeek);
+        }
+
         [Fact]
         public async Task Handle_ListenedTodayAndYesterday_StreakIsTwo()
         {

backend/Tests/Musify.Application.Tests/Users/GetUserFollowersQueryHandlerTests.cs

@@ -0,0 +1,95 @@
+using ErrorOr;
+using Musify.Application.Shared;
+using Musify.Application.Tests.TestSupport;
+using Musify.Application.Users;
+using Musify.Application.Users.Responses;
+using Musify.Domain.Entities;
+using Xunit;
+
+namespace Musify.Application.Tests.Users
+{
+    public sealed class GetUserFollowersQueryHandlerTests : HandlerTestBase
+    {
+        private GetUserFollowersQueryHandler CreateHandler() => new(Database);
+
+        private async Task<ErrorOr<PaginatedResponse<UserSummaryResponse>>> Send(long? viewerId, long userId) =>
+            await CreateHandler().Handle(new GetUserFollowersQuery(viewerId, userId, 1, 20), TestContext.Current.CancellationToken);
+
+        [Fact]
+        public async Task Handle_OwnProfile_ReturnsFollowers()
+        {
+            var user = TestEntities.User(1, "user");
+            var follower = TestEntities.User(2, "follower");
+            await SeedAsync(user, follower, new UserFollow { FollowerId = follower.Id, FollowedId = user.Id });
+
+            var result = await Send(user.Id, user.Id);
+
+            Assert.False(result.IsError);
+            var item = Assert.Single(result.Value.Items);
+            Assert.Equal(follower.Id, item.Id);
+            Assert.False(item.IsFollowedByViewer);
+        }
+
+        [Fact]
+        public async Task Handle_MutualFollow_ReturnsFollowersWithViewerFollowState()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            var other = TestEntities.User(3, "other");
+            await SeedAsync(
+                viewer, user, other,
+                new UserFollow { FollowerId = viewer.Id, FollowedId = user.Id },
+                new UserFollow { FollowerId = user.Id, FollowedId = viewer.Id },
+                new UserFollow { FollowerId = other.Id, FollowedId = user.Id },
+                new UserFollow { FollowerId = viewer.Id, FollowedId = other.Id });
+
+            var result = await Send(viewer.Id, user.Id);
+
+            Assert.False(result.IsError);
+            Assert.Equal(2, result.Value.TotalItemCount);
+            Assert.All(result.Value.Items, item => Assert.Equal(item.Id == other.Id, item.IsFollowedByViewer));
+        }
+
+        [Fact]
+        public async Task Handle_ViewerFollowsButNotFollowedBack_ReturnsForbidden()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            await SeedAsync(viewer, user, new UserFollow { FollowerId = viewer.Id, FollowedId = user.Id });
+
+            var result = await Send(viewer.Id, user.Id);
+
+            Assert.Equal(ErrorType.Forbidden, result.FirstError.Type);
+        }
+
+        [Fact]
+        public async Task Handle_FollowedByUserButNotFollowingBack_ReturnsForbidden()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            await SeedAsync(viewer, user, new UserFollow { FollowerId = user.Id, FollowedId = viewer.Id });
+
+            var result = await Send(viewer.Id, user.Id);
+
+            Assert.Equal(ErrorType.Forbidden, result.FirstError.Type);
+        }
+
+        [Fact]
+        public async Task Handle_Anonymous_ReturnsForbidden()
+        {
+            await SeedAsync(TestEntities.User(1, "user"));
+
+            var result = await Send(null, 1);
+
+            Assert.Equal(ErrorType.Forbidden, result.FirstError.Type);
+        }
+
+        [Fact]
+        public async Task Handle_UserMissing_ReturnsNotFound()
+        {
+            var result = await Send(1, 404);
+
+            Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Users/GetUserFollowingQueryHandlerTests.cs

@@ -0,0 +1,75 @@
+using ErrorOr;
+using Musify.Application.Tests.TestSupport;
+using Musify.Application.Users;
+using Musify.Domain.Entities;
+using Xunit;
+
+namespace Musify.Application.Tests.Users
+{
+    public sealed class GetUserFollowingQueryHandlerTests : HandlerTestBase
+    {
+        private GetUserFollowingQueryHandler CreateHandler() => new(Database);
+
+        [Fact]
+        public async Task Handle_Anonymous_ReturnsFollowedUsers()
+        {
+            var user = TestEntities.User(1, "user");
+            var followedA = TestEntities.User(2, "followedA");
+            var followedB = TestEntities.User(3, "followedB");
+            await SeedAsync(
+                user, followedA, followedB,
+                new UserFollow { FollowerId = user.Id, FollowedId = followedA.Id },
+                new UserFollow { FollowerId = user.Id, FollowedId = followedB.Id });
+
+            var result = await CreateHandler().Handle(new GetUserFollowingQuery(null, user.Id, 1, 20), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            Assert.Equal(2, result.Value.TotalItemCount);
+            Assert.All(result.Value.Items, item => Assert.False(item.IsFollowedByViewer));
+        }
+
+        [Fact]
+        public async Task Handle_Viewer_MarksUsersTheViewerFollows()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            var followedA = TestEntities.User(3, "followedA");
+            var followedB = TestEntities.User(4, "followedB");
+            await SeedAsync(
+                viewer, user, followedA, followedB,
+                new UserFollow { FollowerId = user.Id, FollowedId = followedA.Id },
+                new UserFollow { FollowerId = user.Id, FollowedId = followedB.Id },
+                new UserFollow { FollowerId = viewer.Id, FollowedId = followedA.Id });
+
+            var result = await CreateHandler().Handle(new GetUserFollowingQuery(viewer.Id, user.Id, 1, 20), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            Assert.All(result.Value.Items, item => Assert.Equal(item.Id == followedA.Id, item.IsFollowedByViewer));
+        }
+
+        [Fact]
+        public async Task Handle_Pagination_ReturnsRequestedPage()
+        {
+            await SeedAsync(
+                TestEntities.User(1, "user"), TestEntities.User(2, "a"), TestEntities.User(3, "b"), TestEntities.User(4, "c"),
+                new UserFollow { FollowerId = 1, FollowedId = 2 },
+                new UserFollow { FollowerId = 1, FollowedId = 3 },
+                new UserFollow { FollowerId = 1, FollowedId = 4 });
+
+            var result = await CreateHandler().Handle(new GetUserFollowingQuery(null, 1, 2, 2), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            Assert.Single(result.Value.Items);
+            Assert.Equal(3, result.Value.TotalItemCount);
+            Assert.False(result.Value.HasNextPage);
+        }
+
+        [Fact]
+        public async Task Handle_UserMissing_ReturnsNotFound()
+        {
+            var result = await CreateHandler().Handle(new GetUserFollowingQuery(null, 404, 1, 20), TestContext.Current.CancellationToken);
+
+            Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
+        }
+    }
+}

backend/Tests/Musify.Application.Tests/Users/GetUserProfileQueryHandlerTests.cs

@@ -30,6 +30,46 @@ namespace Musify.Application.Tests.Users
             Assert.Equal(1, result.Value.FollowingCount);
         }
 
+        [Fact]
+        public async Task Handle_MutualFollow_ViewerCanSeeFollowersAndIsFollowing()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            await SeedAsync(
+                viewer, user,
+                new UserFollow { FollowerId = viewer.Id, FollowedId = user.Id },
+                new UserFollow { FollowerId = user.Id, FollowedId = viewer.Id });
+
+            var result = await CreateHandler().Handle(new GetUserProfileQuery(user.Id, viewer.Id), TestContext.Current.CancellationToken);
+
+            Assert.True(result.Value.IsFollowing);
+            Assert.True(result.Value.CanViewFollowers);
+        }
+
+        [Fact]
+        public async Task Handle_OneWayFollow_ViewerCannotSeeFollowers()
+        {
+            var viewer = TestEntities.User(1, "viewer");
+            var user = TestEntities.User(2, "user");
+            await SeedAsync(viewer, user, new UserFollow { FollowerId = viewer.Id, FollowedId = user.Id });
+
+            var result = await CreateHandler().Handle(new GetUserProfileQuery(user.Id, viewer.Id), TestContext.Current.CancellationToken);
+
+            Assert.True(result.Value.IsFollowing);
+            Assert.False(result.Value.CanViewFollowers);
+        }
+
+        [Fact]
+        public async Task Handle_OwnProfile_CanSeeFollowersButIsNotFollowing()
+        {
+            await SeedAsync(TestEntities.User(1, "user"));
+
+            var result = await CreateHandler().Handle(new GetUserProfileQuery(1, 1), TestContext.Current.CancellationToken);
+
+            Assert.False(result.Value.IsFollowing);
+            Assert.True(result.Value.CanViewFollowers);
+        }
+
         [Fact]
         public async Task Handle_UserMissing_ReturnsNotFound()
         {

backend/Tests/Musify.Application.Tests/Users/GetUsersQueryHandlerTests.cs

@@ -1,5 +1,6 @@
 using Musify.Application.Tests.TestSupport;
 using Musify.Application.Users;
+using Musify.Domain.Entities;
 using Xunit;
 
 namespace Musify.Application.Tests.Users
@@ -30,5 +31,18 @@ namespace Musify.Application.Tests.Users
             var user = Assert.Single(result.Value.Items);
             Assert.Equal(1, user.Id);
         }
+
+        [Fact]
+        public async Task Handle_Viewer_MarksFollowedUsers()
+        {
+            await SeedAsync(
+                TestEntities.User(1, "viewer"), TestEntities.User(2, "alice"), TestEntities.User(3, "bob"),
+                new UserFollow { FollowerId = 1, FollowedId = 2 });
+
+            var result = await CreateHandler().Handle(new GetUsersQuery(PageNumber: 1, PageSize: 10, UsernameSearch: null, ViewerId: 1), TestContext.Current.CancellationToken);
+
+            Assert.False(result.IsError);
+            Assert.All(result.Value.Items, item => Assert.Equal(item.Id == 2, item.IsFollowedByViewer));
+        }
     }
 }

backend/Tests/Musify.Infrastructure.Tests/Persistence/AuditableEntityInterceptorTests.cs

@@ -1,3 +1,4 @@
+using Microsoft.EntityFrameworkCore;
 using Musify.Domain.Entities;
 using Musify.Infrastructure.Tests.TestSupport;
 using Xunit;
@@ -43,6 +44,11 @@ namespace Musify.Infrastructure.Tests.Persistence
             Assert.Equal(originalCreatedAt, user.CreatedAt);
             Assert.True(user.UpdatedAt > originalCreatedAt,
                 $"original-created-at={originalCreatedAt:O}, final-updated-at={user.UpdatedAt:O}");
+
+            await using var reader = fixture.CreateDatabase();
+            var stored = await reader.Users.SingleAsync(u => u.Id == user.Id, TestContext.Current.CancellationToken);
+            Assert.True(stored.UpdatedAt > stored.CreatedAt,
+                $"stored-created-at={stored.CreatedAt:O}, stored-updated-at={stored.UpdatedAt:O}");
         }
     }
 }

deploy/compose.yml

@@ -381,6 +381,10 @@ services:
     environment:
       NODE_ENV: production
       PORT: 3000
+      # adapter-node rejects request bodies over 512K by default; audio
+      # uploads are posted to /upload. Keep in line with the edge's
+      # client_max_body_size.
+      BODY_SIZE_LIMIT: 1G
       ORIGIN: ${PUBLIC_WEB_URL}
       ZITADEL_ISSUER: ${PUBLIC_AUTH_URL}
       ZITADEL_CLIENT_ID: ${WEB_CLIENT_ID}

web-player/CLAUDE.md

@@ -42,7 +42,7 @@ npm run lint:tokens      # scripts/check-tokens.mjs, the design system guardrail
   - `media/` for music domain display components (Artwork, TrackList, MediaCard, PlayButton, and so on).
   - `forms/` for composite entity forms (AlbumForm, PlaylistForm, CoverForm, ImageDropzone).
   - `layout/` for page level scaffolding (Page, PageHeader, SectionHeading). This is different from `components/layout/` above, which is the global app chrome.
-- Auth routes live under `src/routes/auth/`: `+page.svelte` is the login screen, and `login/`, `logout/`, `callback/` are the OIDC endpoints. The public user profile route is `src/routes/(app)/user/[id]/`.
+- Auth routes live under `src/routes/auth/`: `+page.svelte` is the login screen, and `login/`, `logout/`, `callback/` are the OIDC endpoints. The public user profile route is `src/routes/(app)/user/[id]/`, and its followers/following lists share one route, `user/[id]/[list=followList]/` (matcher in `src/params/followList.ts`).
 
 ## Styles
 
@@ -55,15 +55,19 @@ The design system lives in `src/routes/layout.css` (`@theme` tokens plus `@utili
 - **Colors:** always use `--mf-*`/`text-*`/`bg-*`/`border-*` from `theme.css`/`tokens.ts`. Never a literal hex or `rgba()` inside a `.svelte` file; those literals only belong in `theme.css`/`tokens.ts` as the source of truth.
 - **Inline `style="…"` and arbitrary `-[…]` values:** only the ones whitelisted in `scripts/check-tokens.mjs` (the stagger variable `--i`, tile hue, menu position, progress width, `text-[clamp(…)]`, `leading-[…]` on login's display type, `grid-cols-[auto_1fr]`, `max-h-[85dvh]`, `my-`/`py-[Ndvh]` for vertical centering, `transition-[filter]` on genre tiles, and `bg-[image:var(--mf-*)]`). Everything else should become a token.
 - Reach for these base components before creating a new one: `Artwork`, `Avatar`, `ListRow`, `MediaIdentity`, `TrackList`, `MediaCard`, `PageHeader`, `ContextMenu`, `ConfirmDialog`, `PlayButton`, `Slider`, `Logo`, `Chip`, `SegmentedControl`, `CoverForm`.
-- Known and accepted gap (documented in `scripts/check-tokens.mjs`): icon `strokeWidth={n}` isn't unified yet. There are 13 different values spread across almost every component, and migrating them to `stroke-thin/regular/bold` recipes safely would require visually confirming that `lucide-svelte` actually respects `stroke-width` through CSS, so that was left out of the last pass.
+- **Icon stroke:** one global rule (`svg.lucide { stroke-width: 1.5 }` in `layout.css`) sets the stroke for every icon. Never pass `strokeWidth` to an icon, since any CSS rule overrides the SVG attribute and it would do nothing. For a different stroke on one icon, use a Tailwind `stroke-*` utility.
+
+## App shell
+
+The shell in `src/routes/+layout.svelte` is a fixed `h-dvh` frame: Sidebar | (content column over PlayerDock) | Queue. Only the content column (`app-scroll`) scrolls, so nothing ever passes under the dock and the chrome can stay transparent over `app-backdrop`. Because the window never scrolls, scroll reset/restore on navigation is handled by `restoreScroll()` in `$lib/state/navigation.svelte.ts`; don't use `window.scrollTo`/`scrollY`.
 
 ## Motion
 
-Every animation follows one scale of three durations and one easing curve, all defined in `theme.css`. Fast (`--mf-motion-fast`, 150ms) is for hover, focus and press feedback: color, opacity and small scale changes. Plain `transition` or `transition-colors` already uses it because it is the Tailwind default, so never write `duration-150`. Base (`--mf-motion-base`, 200ms) is for things that appear on top of the page or move inside a control: modals, menus, the queue panel, `animate-pop`, `animate-fade` and the segmented control thumb. Slow (`--mf-motion-slow`, 300ms) is for content entering the page and larger movement: `animate-enter`, cover zoom on hover and the player dock padding.
+Every animation follows one scale of three durations and one easing curve, all defined in `theme.css`. Fast (`--mf-motion-fast`, 150ms) is for hover, focus and press feedback: color, opacity and small scale changes. Plain `transition` or `transition-colors` already uses it because it is the Tailwind default, so never write `duration-150`. Base (`--mf-motion-base`, 200ms) is for things that appear on top of the page or move inside a control: modals, menus, the queue panel, `animate-pop`, `animate-fade` and the segmented control thumb. Slow (`--mf-motion-slow`, 300ms) is for content entering the page and larger movement: `animate-enter`, cover zoom on hover.
 
 Entrances and movement always use `--mf-ease` (`ease-snappy` in Tailwind, `expoOut` in Svelte transitions), which feels immediate because most of the motion happens at the start. Color transitions keep the Tailwind default curve. Overlays must feel instant: the modal backdrop uses `transition:fade={{ duration: 200 }}` and the panel uses a local `pop` transition (opacity + scale + translateY, `expoOut`, 200ms) mirroring `animate-pop`'s keyframes — both directives so the modal fades and pops on close too, not just on open, and the whole thing settles in 200ms. Staggered lists use `--i` with 40ms steps capped at ten items.
 
-The only exceptions are looping indicators (equalizer bars, pulse, spin, sheen) and the accent hue crossfade in `+layout.svelte` (600ms), which is ambient and meant to be slow. Do not add new durations or curves; if something needs a different feel, pick the closest step of the scale. `prefers-reduced-motion` disables everything globally in `layout.css`.
+The only exceptions are looping indicators (equalizer bars, pulse, spin, sheen) and the accent hue crossfade in `+layout.svelte` (a random 2 to 4 seconds per song change), which is ambient and meant to be slow. Do not add new durations or curves; if something needs a different feel, pick the closest step of the scale. `prefers-reduced-motion` disables everything globally in `layout.css`.
 
 ## Auth
 

web-player/src/app.html

@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en" class="scrollbar-stable">
+<html lang="en">
 	<head>
 		<meta charset="utf-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />

web-player/src/hooks.server.ts

@@ -1,15 +1,16 @@
 import type { Handle } from '@sveltejs/kit';
 import {
+	clearSessionCookie,
 	decodeSession,
 	encodeSession,
+	readSessionCookie,
 	refreshSession,
-	sessionCookieOptions,
-	SESSION_COOKIE
+	writeSessionCookie
 } from '$lib/server/auth';
 import { authConfig } from '$lib/server/config';
 
 export const handle: Handle = async ({ event, resolve }) => {
-	let session = await decodeSession(event.cookies.get(SESSION_COOKIE));
+	let session = await decodeSession(readSessionCookie(event.cookies));
 
 	if (
 		session &&
@@ -17,13 +18,9 @@ export const handle: Handle = async ({ event, resolve }) => {
 	) {
 		session = await refreshSession(session);
 		if (session) {
-			event.cookies.set(
-				SESSION_COOKIE,
-				await encodeSession(session),
-				sessionCookieOptions(event.url)
-			);
+			writeSessionCookie(event.cookies, await encodeSession(session), event.url);
 		} else {
-			event.cookies.delete(SESSION_COOKIE, { path: '/' });
+			clearSessionCookie(event.cookies);
 		}
 	}
 

web-player/src/lib/components/layout/MobileHeader.svelte

@@ -44,7 +44,7 @@
 		</AccountMenu>
 	{:else}
 		<IconButton href="/auth/login" reload label="Iniciar sesión" shape="round" size="md">
-			<LogIn class="size-icon-lg" strokeWidth={2} />
+			<LogIn class="size-icon-lg" />
 		</IconButton>
 	{/if}
 </header>

web-player/src/lib/components/layout/Sidebar.svelte

@@ -31,7 +31,7 @@
 </script>
 
 <aside
-	class="hidden shrink-0 flex-col border-r border-hairline p-5 lg:flex"
+	class="hidden min-h-0 shrink-0 flex-col border-r border-hairline p-5 lg:flex"
 	style="width:var(--mf-sidebar-w)"
 >
 	<a href="/" class="mb-4">
@@ -48,7 +48,7 @@
 					? 'bg-surface-2 text-fg'
 					: 'text-fg-2 hover:bg-hover hover:text-fg'}"
 			>
-				<link.icon class="size-icon-md shrink-0" strokeWidth={1.5} />
+				<link.icon class="size-icon-md shrink-0" />
 				<span class="flex-1 truncate">{link.label}</span>
 				{#if link.count}
 					<span class="text-xs text-fg-2 tabular-nums">{link.count}</span>
@@ -68,12 +68,12 @@
 					size="xs"
 					onclick={() => createPlaylistModal.show()}
 				>
-					<Plus class="size-icon-sm text-fg-2" strokeWidth={1.25} />
+					<Plus class="size-icon-sm text-fg-2" />
 				</IconButton>
 			{/if}
 		</div>
 
-		<div class="flex flex-1 flex-col gap-px overflow-y-auto pb-icon-md">
+		<div class="flex min-h-0 flex-1 flex-col gap-px overflow-y-auto pb-icon-md">
 			{#each playlists as playlist (playlist.id)}
 				{@const active = page.url.pathname === `/playlists/${playlist.id}`}
 				<ListRow
@@ -93,7 +93,7 @@
 					onclick={() => createPlaylistModal.show()}
 					class="flex items-center gap-2 rounded-control px-3 py-2 text-xs text-fg-2 transition-colors hover:bg-hover hover:text-fg-2"
 				>
-					<Plus class="size-3.5" strokeWidth={1.8} />
+					<Plus class="size-3.5" />
 					Crear tu primera lista
 				</button>
 			{/each}

web-player/src/lib/components/layout/TabsBar.svelte

@@ -18,7 +18,7 @@
 </script>
 
 <nav
-	class="pointer-events-auto flex items-center justify-around glass-bar px-4 py-2 lg:hidden {klass}"
+	class="pointer-events-auto flex items-center justify-around px-4 py-2 glass-bar lg:hidden {klass}"
 	style="padding-bottom:calc(0.4375rem + var(--mf-safe-b))"
 >
 	{#each links as link (link.href)}
@@ -30,7 +30,7 @@
 				? 'text-fg'
 				: 'text-fg-2'}"
 		>
-			<link.icon class="size-4" strokeWidth={1.6} />
+			<link.icon class="size-4" />
 			<span class="text-xs font-medium">{link.label}</span>
 		</a>
 	{/each}

web-player/src/lib/components/layout/TopBar.svelte

@@ -62,14 +62,14 @@
 		size="xs"
 		onclick={() => history.back()}
 	>
-		<ChevronLeft class="size-icon-sm" strokeWidth={1.9} />
+		<ChevronLeft class="size-icon-sm" />
 	</IconButton>
 
 	<form onsubmit={onSubmit} class="max-w-search min-w-0 flex-1">
 		<label
 			class="flex h-9.5 w-full items-center gap-2.5 rounded-control bg-surface-2 px-3.5 transition focus-within:bg-surface-hover"
 		>
-			<Search class="size-4 shrink-0 text-fg-2" strokeWidth={1.8} />
+			<Search class="size-4 shrink-0 text-fg-2" />
 			<input
 				type="text"
 				bind:this={searchInput}

web-player/src/lib/components/player/PlayerBar.svelte

@@ -6,7 +6,9 @@
 	import { player } from '$lib/player/player.svelte';
 	import { queuePanel } from '$lib/player/queuePanel.svelte';
 	import { fmtTime } from '$lib/utils/format';
+	import Volume1 from '@lucide/svelte/icons/volume-1';
 	import Volume2 from '@lucide/svelte/icons/volume-2';
+	import VolumeX from '@lucide/svelte/icons/volume-x';
 	import ListMusic from '@lucide/svelte/icons/list-music';
 
 	function seek(value: number) {
@@ -15,7 +17,7 @@
 </script>
 
 <div
-	class="animate-enter pointer-events-auto flex items-center gap-icon-md glass-bar px-4 py-3 sm:hidden"
+	class="animate-enter pointer-events-auto flex items-center gap-icon-md px-4 py-3 glass-bar sm:hidden"
 >
 	<div class="min-w-0 flex-1">
 		<TrackInfo compact />
@@ -24,7 +26,7 @@
 </div>
 
 <div
-	class="animate-enter pointer-events-auto hidden items-center gap-5 glass-bar px-4 py-3 sm:flex"
+	class="animate-enter pointer-events-auto hidden items-center gap-5 px-4 py-3 glass-bar sm:flex"
 >
 	<div class="w-(--mf-player-side-w) min-w-0 shrink-0">
 		<TrackInfo />
@@ -48,9 +50,22 @@
 		</div>
 	</div>
 	<div class="hidden w-(--mf-player-side-w) shrink-0 items-center justify-end gap-3.5 sm:flex">
-		<Volume2 class="size-icon-sm shrink-0 text-fg-2" strokeWidth={1.8} />
+		<IconButton
+			label={player.muted ? 'Activar sonido' : 'Silenciar'}
+			tone="plain"
+			size="xs"
+			onclick={() => player.toggleMute()}
+		>
+			{#if player.muted || player.volume === 0}
+				<VolumeX class="size-icon-sm" />
+			{:else if player.volume < 50}
+				<Volume1 class="size-icon-sm" />
+			{:else}
+				<Volume2 class="size-icon-sm" />
+			{/if}
+		</IconButton>
 		<Slider
-			value={player.volume}
+			value={player.muted ? 0 : player.volume}
 			max={100}
 			label="Volumen"
 			oninput={(value) => player.setVolume(value)}
@@ -63,7 +78,7 @@
 			pressed={queuePanel.open}
 			onclick={() => queuePanel.toggle()}
 		>
-			<ListMusic class="size-icon-sm" strokeWidth={1.8} />
+			<ListMusic class="size-icon-sm" />
 		</IconButton>
 	</div>
 </div>

web-player/src/lib/components/player/PlayerDock.svelte

@@ -13,9 +13,7 @@
 	const hasTrack = $derived(player.currentId !== null);
 </script>
 
-<div
-	class="pointer-events-none fixed inset-x-0 bottom-0 z-(--z-sticky) flex flex-col lg:left-(--mf-sidebar-w)"
->
+<div class="flex shrink-0 flex-col">
 	{#if hasTrack}
 		<PlayerBar />
 	{/if}

web-player/src/lib/components/player/Queue.svelte

@@ -5,21 +5,46 @@
 	import ListRow from '$lib/components/ui/media/ListRow.svelte';
 	import IconButton from '$lib/components/ui/primitives/IconButton.svelte';
 	import { fmtTime } from '$lib/utils/format';
-	import X from '@lucide/svelte/icons/x';
-	import { fly } from 'svelte/transition';
+	import { flip } from 'svelte/animate';
 	import { expoOut } from 'svelte/easing';
+	import X from '@lucide/svelte/icons/x';
 
 	const upcoming = $derived.by(() => {
 		const idx = player.tracks.findIndex((t) => t.id === player.currentId);
 		return idx === -1 ? player.tracks : player.tracks.slice(idx + 1);
 	});
+
+	let dragFrom = $state<number | null>(null);
+	let dropAt = $state<number | null>(null);
+
+	function onDragOver(event: DragEvent, index: number) {
+		if (dragFrom === null) return;
+		event.preventDefault();
+		if (event.dataTransfer) event.dataTransfer.dropEffect = 'move';
+		const rect = (event.currentTarget as HTMLElement).getBoundingClientRect();
+		dropAt = event.clientY < rect.top + rect.height / 2 ? index : index + 1;
+	}
+
+	function onDrop(event: DragEvent) {
+		event.preventDefault();
+		if (dragFrom !== null && dropAt !== null) player.moveQueueItem(dragFrom, dropAt);
+		endDrag();
+	}
+
+	function endDrag() {
+		dragFrom = null;
+		dropAt = null;
+	}
 </script>
 
-{#if queuePanel.open}
+<div
+	class="queue-shell max-sm:hidden"
+	data-open={queuePanel.open ? '' : undefined}
+	inert={!queuePanel.open}
+>
 	<aside
-		transition:fly={{ x: 24, duration: 200, easing: expoOut }}
-		class="hidden shrink-0 flex-col border-l border-hairline px-4 pt-5 sm:flex"
-		style="width:var(--mf-queue-w); padding-bottom:calc(var(--mf-player-h) + 2rem)"
+		class="flex min-h-0 shrink-0 flex-col border-l border-hairline px-4 pt-5 pb-5"
+		style="width:var(--mf-queue-w)"
 	>
 		<div class="mb-5 flex items-center justify-between">
 			<h2 class="font-display text-base font-medium tracking-tight text-fg">En cola</h2>
@@ -30,12 +55,13 @@
 
 		{#if player.current.id}
 			<p class="mb-3 text-eyebrow text-fg-2">Reproduciendo</p>
-			<div class="mb-6 rounded-control surface-active p-2.5">
+			<div class="mb-6 surface-active rounded-control p-2.5">
 				<MediaIdentity
 					trackId={player.current.id}
 					title={player.current.title}
 					artist={player.current.artist || '—'}
 					ownerUserId={player.current.ownerUserId}
+					explicit={player.current.explicit}
 					active
 				/>
 			</div>
@@ -54,27 +80,66 @@
 			{/if}
 		</div>
 
-		<div class="flex flex-1 flex-col gap-px overflow-y-auto">
+		<!-- svelte-ignore a11y_no_static_element_interactions -->
+		<div
+			class="flex min-h-0 flex-1 flex-col gap-px overflow-y-auto"
+			ondragover={(event) => dragFrom !== null && event.preventDefault()}
+			ondrop={onDrop}
+		>
 			{#each upcoming as track, i (track.id)}
 				{@const index = player.tracks.length - upcoming.length + i}
+				<!-- svelte-ignore a11y_no_static_element_interactions -->
+				<div
+					draggable="true"
+					ondragstart={(event) => {
+						dragFrom = index;
+						if (event.dataTransfer) event.dataTransfer.effectAllowed = 'move';
+					}}
+					ondragover={(event) => onDragOver(event, index)}
+					ondrop={onDrop}
+					ondragend={endDrag}
+					class="queue-row"
+					data-dragging={dragFrom === index ? '' : undefined}
+					data-drop={dragFrom === null
+						? undefined
+						: dropAt === index
+							? 'before'
+							: dropAt === index + 1 && index === player.tracks.length - 1
+								? 'after'
+								: undefined}
+					animate:flip={{ duration: 300, easing: expoOut }}
+				>
+					{#if dropAt === index && dragFrom !== null}
+						<div
+							class="pointer-events-none absolute inset-x-2 -top-7 h-0.5 rounded-full bg-accent"
+						></div>
+					{:else if dropAt === index + 1 && dropAt === player.tracks.length && dragFrom !== null}
+						<div
+							class="pointer-events-none absolute inset-x-2 -bottom-7 h-0.5 rounded-full bg-accent"
+						></div>
+					{/if}
 					<ListRow
 						onclick={() => player.playQueueIndex(index)}
 						size="sm"
 						title={track.title}
 						subtitle={track.artist || '—'}
 						subtitleHref={track.ownerUserId}
+						explicit={track.explicit}
 						trackId={track.id}
 						class="p-2"
 					>
 						{#snippet trailing()}
 							{#if track.duration}
-							<span class="shrink-0 text-xs text-fg-2 tabular-nums">{fmtTime(track.duration)}</span>
+								<span class="shrink-0 text-xs text-fg-2 tabular-nums"
+									>{fmtTime(track.duration)}</span
+								>
 							{/if}
 						{/snippet}
 					</ListRow>
+				</div>
 			{:else}
 				<p class="px-2 py-6 text-center text-xs text-fg-2">No hay más canciones en la cola.</p>
 			{/each}
 		</div>
 	</aside>
-{/if}
+</div>

web-player/src/lib/components/player/TrackInfo.svelte

@@ -39,7 +39,7 @@
 	{:else}
 		<div class="size-cover-sm shrink-0 rounded-art bg-surface md:size-cover-md"></div>
 	{/if}
-	<div class="min-w-0 flex-1">
+	<div class="min-w-0">
 		<div class="flex min-w-0 items-center gap-1.5">
 			{#if player.current.explicit}
 				<ExplicitBadge />
@@ -56,11 +56,11 @@
 		<IconButton
 			label={isLiked ? 'Quitar de Me gusta' : 'Añadir a Me gusta'}
 			tone="plain"
-			size="xs"
+			size="md"
 			pressed={isLiked}
 			onclick={toggleLike}
 		>
-			<Heart class="size-icon-md" fill={isLiked ? 'currentColor' : 'none'} strokeWidth={1.7} />
+			<Heart class="size-icon-md" fill={isLiked ? 'currentColor' : 'none'} />
 		</IconButton>
 	{/if}
 </div>

web-player/src/lib/components/player/TransportControls.svelte

@@ -26,7 +26,7 @@
 			aria-label="Aleatorio"
 			class="transition-colors hover:text-fg {player.shuffle ? 'text-accent' : 'text-fg-2'}"
 		>
-			<Shuffle class="size-4" strokeWidth={1.8} />
+			<Shuffle class="size-4" />
 		</button>
 	{/if}
 
@@ -58,7 +58,7 @@
 			aria-label="Repetir"
 			class="transition-colors hover:text-fg {player.repeat ? 'text-accent' : 'text-fg-2'}"
 		>
-			<Repeat class="size-4" strokeWidth={1.8} />
+			<Repeat class="size-4" />
 		</button>
 	{/if}
 </div>

web-player/src/lib/components/ui/forms/ImageDropzone.svelte

@@ -68,6 +68,6 @@
 			class="h-full w-full object-cover"
 		/>
 	{:else}
-		<Icon class="size-icon-xl {gradient ? 'text-on-art/70' : 'text-fg-2'}" strokeWidth={1.3} />
+		<Icon class="size-icon-xl {gradient ? 'text-on-art/70' : 'text-fg-2'}" />
 	{/if}
 </label>

web-player/src/lib/components/ui/layout/PageHeader.svelte

@@ -5,7 +5,7 @@
 		title: string;
 		eyebrow?: string;
 		description?: string;
-		meta?: string;
+		meta?: string | Snippet;
 		cover?: Snippet;
 		actions?: Snippet;
 		align?: 'center' | 'end';
@@ -45,8 +45,10 @@
 			{#if description}
 				<p class="mt-3 max-w-2xl text-body text-fg-2">{description}</p>
 			{/if}
-			{#if meta}
+			{#if typeof meta === 'string'}
 				<p class="mt-3 text-sm text-fg-2">{meta}</p>
+			{:else if meta}
+				<p class="mt-3 text-sm text-fg-2">{@render meta()}</p>
 			{/if}
 		</div>
 		{#if actions && !cover}

web-player/src/lib/components/ui/media/Artwork.svelte

@@ -125,7 +125,7 @@
 			</svg>
 		</div>
 	{:else if fallback === 'gradient'}
-		<div class="h-full w-full bg-[image:var(--mf-cover-grad)]"></div>
+		<div class="h-full w-full bg-(image:--mf-cover-grad)"></div>
 	{:else}
 		<div class="h-full w-full bg-surface"></div>
 	{/if}

web-player/src/lib/components/ui/media/ExplicitBadge.svelte

@@ -7,7 +7,7 @@
 </script>
 
 <span
-	class="grid size-4 shrink-0 place-items-center rounded-tag bg-fg-2 text-xs leading-4 font-bold text-bg {klass}"
+	class="grid size-4 shrink-0 place-items-center rounded-tag border border-accent/30 bg-accent-tint pt-px text-xs leading-none font-normal text-accent-soft {klass}"
 	title="Contenido explícito"
 	aria-label="Contenido explícito">E</span
 >

web-player/src/lib/components/ui/media/FollowButton.svelte

@@ -0,0 +1,44 @@
+<script lang="ts">
+	import { untrack } from 'svelte';
+	import { enhance } from '$app/forms';
+	import Button from '../primitives/Button.svelte';
+
+	interface Props {
+		following: boolean;
+		userId?: string;
+		invalidateAll?: boolean;
+		class?: string;
+	}
+
+	let { following: initial, userId, invalidateAll = false, class: klass = '' }: Props = $props();
+
+	let following = $state(untrack(() => initial));
+	let submitting = $state(false);
+</script>
+
+<form
+	method="POST"
+	action={following ? '?/unfollow' : '?/follow'}
+	class={klass}
+	use:enhance={() => {
+		submitting = true;
+		return async ({ result, update }) => {
+			if (result.type === 'success' && typeof result.data?.following === 'boolean')
+				following = result.data.following;
+			await update({ reset: false, invalidateAll });
+			submitting = false;
+		};
+	}}
+>
+	{#if userId}
+		<input type="hidden" name="userId" value={userId} />
+	{/if}
+	<Button
+		type="submit"
+		size="sm"
+		variant={following ? 'secondary' : 'primary'}
+		disabled={submitting}
+	>
+		{following ? 'Dejar de seguir' : 'Seguir'}
+	</Button>
+</form>

web-player/src/lib/components/ui/media/TrackList.svelte

@@ -95,7 +95,7 @@
 		style="--mf-track-cols:{gridColumns}; --mf-track-cols-mobile:{gridColumnsMobile}"
 	>
 		{#if index}
-			<Hash size={16} strokeWidth={1.5} />
+			<Hash size={16} />
 		{/if}
 		<span>Título</span>
 		{#each columns as column (column)}

web-player/src/lib/components/ui/media/UserRow.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import ListRow from './ListRow.svelte';
+	import Avatar from './Avatar.svelte';
+
+	interface Props {
+		user: {
+			id: string;
+			name: string;
+			profilePictureUrl: string | null;
+		};
+	}
+
+	let { user }: Props = $props();
+</script>
+
+<ListRow title={user.name} href="/user/{user.id}" size="lg" class="min-w-0 flex-1">
+	{#snippet art()}
+		<Avatar name={user.name} src={user.profilePictureUrl} size="md" />
+	{/snippet}
+</ListRow>

web-player/src/lib/components/ui/overlay/Dialog.svelte

@@ -24,7 +24,7 @@
 >
 	{#if tone === 'danger'}
 		<span class="mb-4 grid size-10 place-items-center rounded-full bg-danger/12 text-danger-fg">
-			<CircleAlert class="size-icon-md" strokeWidth={2} />
+			<CircleAlert class="size-icon-md" />
 		</span>
 	{/if}
 	<h2 class="text-display-3 text-fg">{title}</h2>

web-player/src/lib/components/ui/overlay/GlassMenu.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
 	import type { Snippet } from 'svelte';
 
+	import { pop } from '$lib/utils/transitions';
+
 	interface Props {
 		class?: string;
 		style?: string;
@@ -12,9 +14,8 @@
 </script>
 
 <div
-	class="glass-panel animate-pop rounded-panel p-1.5 {border
-		? 'border border-hairline'
-		: ''} {klass}"
+	transition:pop|global
+	class="glass-panel rounded-panel p-1.5 {border ? 'border border-hairline' : ''} {klass}"
 	{style}
 >
 	{@render children()}

web-player/src/lib/components/ui/overlay/Modal.svelte

@@ -3,8 +3,7 @@
 	import X from '@lucide/svelte/icons/x';
 	import IconButton from '../primitives/IconButton.svelte';
 	import { fade } from 'svelte/transition';
-	import { expoOut } from 'svelte/easing';
-	import type { TransitionConfig } from 'svelte/transition';
+	import { pop } from '$lib/utils/transitions';
 
 	interface Props {
 		open: boolean;
@@ -48,15 +47,6 @@
 		);
 	}
 
-	function pop(node: Element, { duration = 200 }: { duration?: number } = {}): TransitionConfig {
-		return {
-			duration,
-			easing: expoOut,
-			css: (t) =>
-				`opacity: ${t}; transform: scale(${0.98 + 0.02 * t}) translateY(${0.25 * (1 - t)}rem);`
-		};
-	}
-
 	function onWindowKeydown(event: KeyboardEvent) {
 		if (!open) return;
 		if (event.key === 'Escape') {
@@ -90,7 +80,7 @@
 		<div
 			bind:this={panel}
 			transition:pop={{ duration: 200 }}
-			class="glass-panel max-h-[85dvh] w-full overflow-y-auto {maxWidth} rounded-panel p-5 outline-none sm:p-6 {panelClass}"
+			class="glass-panel max-h-[85dvh] w-full glow-drift overflow-y-auto {maxWidth} rounded-panel p-5 outline-none sm:p-6 {panelClass}"
 			role="dialog"
 			aria-modal="true"
 			aria-label={title}

web-player/src/lib/components/ui/primitives/Checkbox.svelte

@@ -22,7 +22,6 @@
 		/>
 		<Check
 			class="pointer-events-none absolute size-3.5 text-ink opacity-0 transition peer-checked:opacity-100"
-			strokeWidth={3}
 		/>
 	</span>
 	<span class="cursor-pointer">{@render children()}</span>

web-player/src/lib/components/ui/primitives/Chip.svelte

@@ -3,20 +3,21 @@
 
 	interface Props {
 		selected?: boolean;
+		disabled?: boolean;
 		count?: number;
 		href?: string;
 		onclick?: () => void;
 		children: Snippet;
 	}
 
-	let { selected = false, count, href, onclick, children }: Props = $props();
+	let { selected = false, disabled = false, count, href, onclick, children }: Props = $props();
 
 	const classes = $derived(
 		href
 			? 'rounded-full border border-line-strong px-3.5 py-2 text-xs text-fg-2 transition-colors hover:bg-hover hover:text-fg'
 			: `flex items-center gap-2 rounded-full px-3.5 py-2 text-xs font-medium transition ${
 					selected ? 'bg-cta-strong text-ink' : 'bg-btn text-fg-2 hover:bg-btn-hover hover:text-fg'
-				}`
+				} ${disabled ? 'cursor-not-allowed opacity-40' : ''}`
 	);
 </script>
 
@@ -30,5 +31,5 @@
 {#if href}
 	<a {href} class={classes}>{@render content()}</a>
 {:else}
-	<button type="button" {onclick} class={classes}>{@render content()}</button>
+	<button type="button" {onclick} {disabled} class={classes}>{@render content()}</button>
 {/if}

web-player/src/lib/components/ui/primitives/EmptyState.svelte

@@ -15,7 +15,7 @@
 
 <div class="flex flex-col items-center rounded-panel px-6 py-16 text-center {klass}">
 	{#if Icon}
-		<Icon class="size-icon-xl text-fg-2" strokeWidth={1.25} />
+		<Icon class="size-icon-xl text-fg-2" />
 	{/if}
 	{#if title}
 		<h3 class="mt-6 text-display-3 text-fg">

web-player/src/lib/components/ui/primitives/Slider.svelte

@@ -24,7 +24,7 @@
 	oninput={handleInput}
 	aria-label={label}
 	class="mf-slider mf-slider-{variant}"
-	style="background:linear-gradient(to right, var(--mf-text-2) {percent}%, var(--mf-track) {percent}%)"
+	style="--p:{percent}%"
 />
 
 <style>
@@ -35,6 +35,17 @@
 		border-radius: 100px;
 		outline: none;
 		cursor: pointer;
+		background-image:
+			linear-gradient(
+				to right,
+				transparent var(--p),
+				color-mix(in srgb, var(--mf-text) 12%, var(--mf-bg)) var(--p)
+			),
+			var(--mf-slider-fill);
+		background-size:
+			100% 100%,
+			300% 100%;
+		animation: gradient-drift 10s linear infinite alternate;
 	}
 	.mf-slider-seek {
 		width: 100%;

web-player/src/lib/config.ts

@@ -17,5 +17,6 @@ export const HOME_POPULAR_MAX = 8;
 export const PLAYLIST_PICKER_PAGE_SIZE = 50;
 export const LIKED_TRACKS_PAGE_SIZE = 500;
 export const EXPLORE_USERS_LIMIT = 12;
+export const FOLLOW_LIST_PAGE_SIZE = 30;
 export const MENU_WIDTH = 240;
 export const SUBMENU_WIDTH = 256;

web-player/src/lib/data/genres.ts

@@ -1,22 +1,75 @@
-export const GENRE_INFO: Record<string, { label: string; tagline: string }> = {
-	pop: { label: 'Pop', tagline: 'Éxitos que suenan en todas partes' },
-	rock: { label: 'Rock', tagline: 'Guitarras, actitud y ruido' },
-	reggaeton: { label: 'Reggaetón', tagline: 'El ritmo que no para' },
-	'lo-fi': { label: 'Lo-fi', tagline: 'Para concentrarte o relajarte' },
-	indie: { label: 'Indie', tagline: 'Voces fuera del radar' },
-	salsa: { label: 'Salsa', tagline: 'Para mover el cuerpo' },
-	'k-pop': { label: 'K-pop', tagline: 'Coreografías pegajosas' },
-	electrónica: { label: 'Electrónica', tagline: 'Beats para perderte' },
-	jazz: { label: 'Jazz', tagline: 'Improvisación y elegancia' },
-	baladas: { label: 'Baladas', tagline: 'Para sentir con calma' },
-	trap: { label: 'Trap', tagline: 'Autotune y bajos pesados' },
-	cumbia: { label: 'Cumbia', tagline: 'El sabor de siempre' },
-	'hip hop': { label: 'Hip hop', tagline: 'Rimas con actitud' },
-	'música clásica': { label: 'Clásica', tagline: 'Siglos de composición' }
+const GENRE_INFO: Record<string, { label: string; tagline: string }> = {
+	Pop: { label: 'Pop', tagline: 'Éxitos que suenan en todas partes' },
+	Rock: { label: 'Rock', tagline: 'Guitarras, actitud y ruido' },
+	HipHop: { label: 'Hip hop', tagline: 'Rimas con actitud' },
+	RnB: { label: 'R&B', tagline: 'Ritmo suave y voces con alma' },
+	Jazz: { label: 'Jazz', tagline: 'Improvisación y elegancia' },
+	Blues: { label: 'Blues', tagline: 'Sentimiento en cada nota' },
+	Classical: { label: 'Clásica', tagline: 'Siglos de composición' },
+	Electronic: { label: 'Electrónica', tagline: 'Beats para perderte' },
+	House: { label: 'House', tagline: 'Pista de baile sin fin' },
+	Techno: { label: 'Techno', tagline: 'Pulso hipnótico' },
+	Trance: { label: 'Trance', tagline: 'Melodías que te elevan' },
+	Dubstep: { label: 'Dubstep', tagline: 'Bajos que hacen temblar' },
+	DrumAndBass: { label: 'Drum and bass', tagline: 'Velocidad y graves' },
+	Metal: { label: 'Metal', tagline: 'Riffs pesados' },
+	Punk: { label: 'Punk', tagline: 'Rápido, crudo y directo' },
+	Reggae: { label: 'Reggae', tagline: 'Buenas vibraciones' },
+	Reggaeton: { label: 'Reggaetón', tagline: 'El ritmo que no para' },
+	Country: { label: 'Country', tagline: 'Historias con guitarra' },
+	Folk: { label: 'Folk', tagline: 'Raíces y acústico' },
+	Indie: { label: 'Indie', tagline: 'Voces fuera del radar' },
+	KPop: { label: 'K-pop', tagline: 'Coreografías pegajosas' },
+	Latin: { label: 'Latina', tagline: 'Sabor y ritmo' },
+	Soul: { label: 'Soul', tagline: 'Emoción en estado puro' },
+	Funk: { label: 'Funk', tagline: 'Groove imposible de quedarse quieto' },
+	Ambient: { label: 'Ambient', tagline: 'Paisajes sonoros' },
+	Lofi: { label: 'Lo-fi', tagline: 'Para concentrarte o relajarte' }
 };
 
-export const genreTiles = Object.entries(GENRE_INFO).map(([query, info], i, all) => ({
-	query,
-	hue: Math.round((i * 360) / all.length),
-	...info
-}));
+const KNOWN_GENRES = Object.keys(GENRE_INFO);
+
+function humanize(name: string): string {
+	return name.replace(/([a-z])([A-Z])/g, '$1 $2');
+}
+
+export function genreInfo(genre: string) {
+	return GENRE_INFO[genre] ?? { label: humanize(genre), tagline: '' };
+}
+
+export function genreHue(genre: string): number {
+	const known = KNOWN_GENRES.indexOf(genre);
+	if (known >= 0) return Math.round((known * 360) / KNOWN_GENRES.length);
+	let hash = 0;
+	for (const char of genre) hash = (hash * 31 + char.charCodeAt(0)) % 360;
+	return hash;
+}
+
+export function genreTiles(genres: { genre: string }[]) {
+	return genres.map(({ genre }) => ({
+		genre,
+		hue: genreHue(genre),
+		...genreInfo(genre)
+	}));
+}
+
+export function genreOptions(genres: { genre: string; incompatibleWith: string[] }[]) {
+	return genres.map(({ genre, incompatibleWith }) => ({
+		genre,
+		incompatibleWith,
+		label: genreInfo(genre).label
+	}));
+}
+
+export function findConflict(
+	tags: string[],
+	options: { genre: string; incompatibleWith: string[] }[]
+): [string, string] | undefined {
+	const byGenre = new Map(options.map((option) => [option.genre, option.incompatibleWith]));
+	for (let i = 0; i < tags.length; i++) {
+		for (let j = i + 1; j < tags.length; j++) {
+			if (byGenre.get(tags[i])?.includes(tags[j])) return [tags[i], tags[j]];
+		}
+	}
+	return undefined;
+}

web-player/src/lib/player/listenTracker.ts

@@ -0,0 +1,52 @@
+const MAX_TICK_GAP_SECONDS = 2.5;
+const FLUSH_EVERY_SECONDS = 30;
+
+export class ListenTracker {
+	#listenId: string | null = null;
+	#played = 0;
+	#sent = 0;
+	#lastTime: number | null = null;
+	#lastFlushAt = 0;
+
+	begin(listenId: string | null | undefined) {
+		this.flush();
+		this.#listenId = listenId ?? null;
+		this.#played = 0;
+		this.#sent = 0;
+		this.#lastTime = null;
+		this.#lastFlushAt = Date.now();
+	}
+
+	resync(currentTime: number) {
+		this.#lastTime = currentTime;
+	}
+
+	interrupt() {
+		this.#lastTime = null;
+	}
+
+	tick(currentTime: number) {
+		if (this.#listenId === null) return;
+		const last = this.#lastTime;
+		this.#lastTime = currentTime;
+		if (last === null) return;
+		const delta = currentTime - last;
+		if (delta > 0 && delta <= MAX_TICK_GAP_SECONDS) this.#played += delta;
+		if (Date.now() - this.#lastFlushAt >= FLUSH_EVERY_SECONDS * 1000) this.flush();
+	}
+
+	flush() {
+		const id = this.#listenId;
+		if (id === null || this.#played <= this.#sent) return;
+		this.#sent = this.#played;
+		this.#lastFlushAt = Date.now();
+		fetch(`/api/listens/${id}/progress`, {
+			method: 'PUT',
+			headers: { 'content-type': 'application/json' },
+			body: JSON.stringify({ playedSeconds: this.#played }),
+			keepalive: true
+		}).catch(() => {
+			this.#sent = 0;
+		});
+	}
+}