From 00789525f896af03f969087bb3e3b82e3a5c597d Mon Sep 17 00:00:00 2001
From: Tayrtahn <tayrtahn@gmail.com>
Date: Wed, 11 Jun 2025 14:04:30 -0400
Subject: [PATCH] Improve some `BinSystem` functionality (#38262)

* BinSystem improvements

* Prevent double-add
---
 Content.Shared/Storage/Components/BinComponent.cs |  6 ++++++
 Content.Shared/Storage/EntitySystems/BinSystem.cs | 13 ++++++++-----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/Content.Shared/Storage/Components/BinComponent.cs b/Content.Shared/Storage/Components/BinComponent.cs
index 99e2a9844a..03967d7fc9 100644
--- a/Content.Shared/Storage/Components/BinComponent.cs
+++ b/Content.Shared/Storage/Components/BinComponent.cs
@@ -20,6 +20,12 @@ public sealed partial class BinComponent : Component
     [ViewVariables]
     public Container ItemContainer = default!;
 
+    /// <summary>
+    /// ID of the container used to hold the items in the bin.
+    /// </summary>
+    [DataField]
+    public string ContainerId = "bin-container";
+
     /// <summary>
     /// A list representing the order in which
     /// all the entities are stored in the bin.
diff --git a/Content.Shared/Storage/EntitySystems/BinSystem.cs b/Content.Shared/Storage/EntitySystems/BinSystem.cs
index 8c2cb4c4fc..3b57dd8fea 100644
--- a/Content.Shared/Storage/EntitySystems/BinSystem.cs
+++ b/Content.Shared/Storage/EntitySystems/BinSystem.cs
@@ -24,13 +24,12 @@ public sealed class BinSystem : EntitySystem
     [Dependency] private readonly SharedHandsSystem _hands = default!;
     [Dependency] private readonly EntityWhitelistSystem _whitelistSystem = default!;
 
-    public const string BinContainerId = "bin-container";
-
     /// <inheritdoc/>
     public override void Initialize()
     {
         SubscribeLocalEvent<BinComponent, ComponentStartup>(OnStartup);
         SubscribeLocalEvent<BinComponent, MapInitEvent>(OnMapInit);
+        SubscribeLocalEvent<BinComponent, EntInsertedIntoContainerMessage>(OnEntInserted);
         SubscribeLocalEvent<BinComponent, EntRemovedFromContainerMessage>(OnEntRemoved);
         SubscribeLocalEvent<BinComponent, InteractHandEvent>(OnInteractHand, before: new[] { typeof(SharedItemSystem) });
         SubscribeLocalEvent<BinComponent, AfterInteractUsingEvent>(OnAfterInteractUsing);
@@ -45,7 +44,7 @@ public sealed class BinSystem : EntitySystem
 
     private void OnStartup(EntityUid uid, BinComponent component, ComponentStartup args)
     {
-        component.ItemContainer = _container.EnsureContainer<Container>(uid, BinContainerId);
+        component.ItemContainer = _container.EnsureContainer<Container>(uid, component.ContainerId);
     }
 
     private void OnMapInit(EntityUid uid, BinComponent component, MapInitEvent args)
@@ -66,6 +65,11 @@ public sealed class BinSystem : EntitySystem
         }
     }
 
+    private void OnEntInserted(Entity<BinComponent> ent, ref EntInsertedIntoContainerMessage args)
+    {
+        ent.Comp.Items.Add(args.Entity);
+    }
+
     private void OnEntRemoved(EntityUid uid, BinComponent component, EntRemovedFromContainerMessage args)
     {
         component.Items.Remove(args.Entity);
@@ -96,7 +100,7 @@ public sealed class BinSystem : EntitySystem
         if (args.Using != null)
         {
             var canReach = args.CanAccess && args.CanInteract;
-            InsertIntoBin(args.User, args.Target, (EntityUid) args.Using, component, false, canReach);
+            InsertIntoBin(args.User, args.Target, (EntityUid)args.Using, component, false, canReach);
         }
     }
 
@@ -136,7 +140,6 @@ public sealed class BinSystem : EntitySystem
             return false;
 
         _container.Insert(toInsert, component.ItemContainer);
-        component.Items.Add(toInsert);
         Dirty(uid, component);
         return true;
     }
-- 
2.51.2