feat: recommend server-generated mixes from Musify and YouTube Music

Mixes are their own concept, not playlists: they live in their own Mixes/MixItems tables, cannot be edited and never show up among the user's playlists. Each item is either a Musify track or a YouTube Music reference, so YouTube songs stream directly instead of being downloaded. A daily Hangfire job seeds the mixes from the listening history: one discovery mix, one daily mix and one per top artist. The per-user YouTube filler query was already in the working tree and rides along here because it shares files with this change.
2026-07-21 18:13:07 +02:00
parent 637e1ae583
commit 496a5f4a0b
36 changed files with 2667 additions and 13 deletions
@@ -0,0 +1,27 @@
+using Musify.Domain.Entities;
+
+namespace Musify.Application.Mixes.Responses
+{
+    public record MixApplicationResponse(
+        Guid Id,
+        string Title,
+        string? Subtitle,
+        DateOnly GeneratedOn,
+        int ItemCount,
+        IReadOnlyList<MixItemApplicationResponse> Items)
+    {
+        public const int CoverItemCount = 4;
+
+        public static MixApplicationResponse FromEntity(
+            Mix mix,
+            int itemCount,
+            IReadOnlyList<MixItem> items) =>
+            new(
+                mix.Id,
+                mix.Title,
+                mix.Subtitle,
+                mix.GeneratedOn,
+                itemCount,
+                [.. items.Select(MixItemApplicationResponse.FromEntity)]);
+    }
+}
@@ -0,0 +1,27 @@
+using Musify.Domain.Entities;
+using Musify.Domain.ValueObjects;
+
+namespace Musify.Application.Mixes.Responses
+{
+    public record MixItemApplicationResponse(
+        MixItemSource Source,
+        Guid? TrackId,
+        string? VideoId,
+        string Title,
+        string? Artist,
+        string? ThumbnailUrl,
+        int DurationSeconds,
+        bool IsExplicit)
+    {
+        public static MixItemApplicationResponse FromEntity(MixItem item) =>
+            new(
+                item.Source,
+                item.TrackId,
+                item.VideoId,
+                item.Title ?? string.Empty,
+                item.Artist,
+                item.ThumbnailUrl,
+                item.DurationSeconds,
+                item.IsExplicit);
+    }
+}