From 356e58ba250b2113fff1f3dc5616283c6cfc77fe Mon Sep 17 00:00:00 2001
From: gamer147 <gamer147@gmail.com>
Date: Sat, 13 Jun 2026 08:12:02 -0400
Subject: [PATCH] feat(degree): /degree/favorite accept-only (persistence
 deferred)

---
 .../Controllers/DegreeController.cs           | 10 +++++
 .../Requests/Degree/DegreeFavoriteRequest.cs  | 17 +++++++++
 .../DegreeControllerFavoriteTests.cs          | 37 +++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Degree/DegreeFavoriteRequest.cs
 create mode 100644 SVSim.UnitTests/Controllers/DegreeControllerFavoriteTests.cs

diff --git a/SVSim.EmulatedEntrypoint/Controllers/DegreeController.cs b/SVSim.EmulatedEntrypoint/Controllers/DegreeController.cs
index da37bbf1..3a601f11 100644
--- a/SVSim.EmulatedEntrypoint/Controllers/DegreeController.cs
+++ b/SVSim.EmulatedEntrypoint/Controllers/DegreeController.cs
@@ -38,4 +38,14 @@ public class DegreeController : SVSimController
                 .ToList(),
         };
     }
+
+    [HttpPost("favorite")]
+    public ActionResult<EmptyResponse> Favorite([FromBody] DegreeFavoriteRequest _)
+    {
+        if (!TryGetViewerId(out long __)) return Unauthorized();
+        // Accept-and-ack. Persisting per-viewer cosmetic favorites is deferred until
+        // a viewer-favorites schema lands (would also serve /sleeve/favorite + /emblem/favorite
+        // via the shared Wizard/FavoriteTask.cs Kind enum).
+        return new EmptyResponse();
+    }
 }
diff --git a/SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Degree/DegreeFavoriteRequest.cs b/SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Degree/DegreeFavoriteRequest.cs
new file mode 100644
index 00000000..99d20b03
--- /dev/null
+++ b/SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Degree/DegreeFavoriteRequest.cs
@@ -0,0 +1,17 @@
+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Degree;
+
+[MessagePackObject]
+public class DegreeFavoriteRequest : BaseRequest
+{
+    // Spec note: ids are STRINGS on the wire, not ints. Same gotcha as /sleeve/favorite and /emblem/favorite.
+    [JsonPropertyName("favorite_add")]
+    [Key("favorite_add")]
+    public List<string> FavoriteAdd { get; set; } = new();
+
+    [JsonPropertyName("favorite_remove")]
+    [Key("favorite_remove")]
+    public List<string> FavoriteRemove { get; set; } = new();
+}
diff --git a/SVSim.UnitTests/Controllers/DegreeControllerFavoriteTests.cs b/SVSim.UnitTests/Controllers/DegreeControllerFavoriteTests.cs
new file mode 100644
index 00000000..a9211a69
--- /dev/null
+++ b/SVSim.UnitTests/Controllers/DegreeControllerFavoriteTests.cs
@@ -0,0 +1,37 @@
+using System.Net;
+using System.Text;
+using NUnit.Framework;
+using SVSim.UnitTests.Infrastructure;
+
+namespace SVSim.UnitTests.Controllers;
+
+public class DegreeControllerFavoriteTests
+{
+    [Test]
+    public async Task Favorite_accepts_add_and_remove_lists()
+    {
+        using var factory = new SVSimTestFactory();
+        long viewerId = await factory.SeedViewerAsync(tutorialState: 0);
+        using var client = factory.CreateAuthenticatedClient(viewerId);
+
+        var requestJson = """{"favorite_add":["100","101"],"favorite_remove":["200"],"viewer_id":"0","steam_id":0,"steam_session_ticket":""}""";
+        var response = await client.PostAsync("/degree/favorite",
+            new StringContent(requestJson, Encoding.UTF8, "application/json"));
+
+        Assert.That(response.StatusCode, Is.EqualTo(HttpStatusCode.OK));
+    }
+
+    [Test]
+    public async Task Favorite_accepts_empty_lists()
+    {
+        using var factory = new SVSimTestFactory();
+        long viewerId = await factory.SeedViewerAsync(tutorialState: 0);
+        using var client = factory.CreateAuthenticatedClient(viewerId);
+
+        var requestJson = """{"favorite_add":[],"favorite_remove":[],"viewer_id":"0","steam_id":0,"steam_session_ticket":""}""";
+        var response = await client.PostAsync("/degree/favorite",
+            new StringContent(requestJson, Encoding.UTF8, "application/json"));
+
+        Assert.That(response.StatusCode, Is.EqualTo(HttpStatusCode.OK));
+    }
+}