Add the instrument names to the MIDI channel selector (#38083)

* Add the instrument to the MIDI channel selector

* Reviews

Adds support for chained masters
Makes the channel UI update on its own when the midi changes (Works with bands too!)

* add to admin logs and limit track count

* Limit track names by length too

* remove left over comment

* Requested changes

* Reviews

Content.Server/Instruments/InstrumentSystem.cs

@@ -1,8 +1,12 @@
+using System.Linq;
 using Content.Server.Administration;
+using Content.Server.Administration.Logs;
 using Content.Server.Interaction;
 using Content.Server.Popups;
 using Content.Server.Stunnable;
 using Content.Shared.Administration;
+using Content.Shared.CCVar;
+using Content.Shared.Database;
 using Content.Shared.Examine;
 using Content.Shared.Instruments;
 using Content.Shared.Instruments.UI;
@@ -17,6 +21,7 @@ using Robust.Shared.Console;
 using Robust.Shared.GameStates;
 using Robust.Shared.Player;
 using Robust.Shared.Timing;
+using Robust.Shared.Utility;
 
 namespace Content.Server.Instruments;
 
@@ -31,6 +36,7 @@ public sealed partial class InstrumentSystem : SharedInstrumentSystem
     [Dependency] private readonly PopupSystem _popup = default!;
     [Dependency] private readonly TransformSystem _transform = default!;
     [Dependency] private readonly ExamineSystemShared _examineSystem = default!;
+    [Dependency] private readonly IAdminLogManager _admingLogSystem = default!;
 
     private const float MaxInstrumentBandRange = 10f;
 
@@ -50,6 +56,7 @@ public sealed partial class InstrumentSystem : SharedInstrumentSystem
         SubscribeNetworkEvent<InstrumentStopMidiEvent>(OnMidiStop);
         SubscribeNetworkEvent<InstrumentSetMasterEvent>(OnMidiSetMaster);
         SubscribeNetworkEvent<InstrumentSetFilteredChannelEvent>(OnMidiSetFilteredChannel);
+        SubscribeNetworkEvent<InstrumentSetChannelsEvent>(OnMidiSetChannels);
 
         Subs.BuiEvents<InstrumentComponent>(InstrumentUiKey.Key, subs =>
         {
@@ -132,6 +139,44 @@ public sealed partial class InstrumentSystem : SharedInstrumentSystem
         Clean(uid, instrument);
     }
 
+
+    private void OnMidiSetChannels(InstrumentSetChannelsEvent msg, EntitySessionEventArgs args)
+    {
+        var uid = GetEntity(msg.Uid);
+
+        if (!TryComp(uid, out InstrumentComponent? instrument) || !TryComp(uid, out ActiveInstrumentComponent? activeInstrument))
+            return;
+
+        if (args.SenderSession.AttachedEntity != instrument.InstrumentPlayer)
+            return;
+
+        if (msg.Tracks.Length > RobustMidiEvent.MaxChannels)
+        {
+            Log.Warning($"{args.SenderSession.UserId.ToString()} - Tried to send tracks over the limit! Received: {msg.Tracks.Length}; Limit: {RobustMidiEvent.MaxChannels}");
+            return;
+        }
+
+        var tracksString = string.Join("\n",
+            msg.Tracks
+            .Where(t => t != null)
+            .Select(t => t!.ToString()));
+
+        _admingLogSystem.Add(
+            LogType.Instrument,
+            LogImpact.Low,
+            $"{ToPrettyString(args.SenderSession.AttachedEntity)} set the midi channels for {ToPrettyString(uid)} to {tracksString}");
+
+        // Truncate any track names too long.
+        foreach (var t in msg.Tracks)
+        {
+            t?.TruncateFields(_cfg.GetCVar(CCVars.MidiMaxChannelNameLength));
+        }
+
+        activeInstrument.Tracks = msg.Tracks;
+
+        Dirty(uid, activeInstrument);
+    }
+
     private void OnMidiSetMaster(InstrumentSetMasterEvent msg, EntitySessionEventArgs args)
     {
         var uid = GetEntity(msg.Uid);