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 2cb51f540e
commit 90e842d084
36 changed files with 2667 additions and 13 deletions
@@ -0,0 +1,97 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Musify.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddMixes : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Mixes",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    UserId = table.Column<long>(type: "bigint", nullable: false),
+                    Title = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
+                    Subtitle = table.Column<string>(type: "character varying(256)", maxLength: 256, nullable: true),
+                    GeneratedOn = table.Column<DateOnly>(type: "date", nullable: false),
+                    Position = table.Column<int>(type: "integer", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    UpdatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Mixes", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Mixes_User_UserId",
+                        column: x => x.UserId,
+                        principalTable: "User",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "MixItems",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    MixId = table.Column<Guid>(type: "uuid", nullable: false),
+                    Position = table.Column<int>(type: "integer", nullable: false),
+                    Source = table.Column<int>(type: "integer", nullable: false),
+                    TrackId = table.Column<Guid>(type: "uuid", nullable: true),
+                    VideoId = table.Column<string>(type: "character varying(64)", maxLength: 64, nullable: true),
+                    Title = table.Column<string>(type: "character varying(300)", maxLength: 300, nullable: true),
+                    Artist = table.Column<string>(type: "character varying(300)", maxLength: 300, nullable: true),
+                    ThumbnailUrl = table.Column<string>(type: "character varying(512)", maxLength: 512, nullable: true),
+                    DurationSeconds = table.Column<int>(type: "integer", nullable: false),
+                    IsExplicit = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_MixItems", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_MixItems_Mixes_MixId",
+                        column: x => x.MixId,
+                        principalTable: "Mixes",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_MixItems_Tracks_TrackId",
+                        column: x => x.TrackId,
+                        principalTable: "Tracks",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Mixes_UserId_Position",
+                table: "Mixes",
+                columns: new[] { "UserId", "Position" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_MixItems_MixId_Position",
+                table: "MixItems",
+                columns: new[] { "MixId", "Position" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_MixItems_TrackId",
+                table: "MixItems",
+                column: "TrackId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "MixItems");
+
+            migrationBuilder.DropTable(
+                name: "Mixes");
+        }
+    }
+}