From f918b4f04a0ddd01778ec7538342346a991abf3f Mon Sep 17 00:00:00 2001
From: rasmus123d <59487370+RasmusKD@users.noreply.github.com>
Date: Sun, 16 Aug 2026 11:06:37 +0200
Subject: [PATCH] Treat copper chests as containers in pipes

All eight variants run through ChestBlock and the ordinary chest state,
so doubles and insertion already behave like chests; the only thing
missing was membership in the container checks. The copper_chests tag
covers the family in the switch default, so the fast path for everything
else is untouched.
---
 src/main/java/com/sk89q/craftbook/mechanics/pipe/Pipes.java | 3 ++-
 src/main/java/com/sk89q/craftbook/util/InventoryUtil.java   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/sk89q/craftbook/mechanics/pipe/Pipes.java b/src/main/java/com/sk89q/craftbook/mechanics/pipe/Pipes.java
index 19b134e53..182dbbe2a 100644
--- a/src/main/java/com/sk89q/craftbook/mechanics/pipe/Pipes.java
+++ b/src/main/java/com/sk89q/craftbook/mechanics/pipe/Pipes.java
@@ -360,7 +360,8 @@ private void startPipe(Block block, List<ItemStack> items, boolean request) {
                     || facType == Material.CHISELED_BOOKSHELF
                     || facType == Material.CRAFTER
                     || facType == Material.DECORATED_POT
-                    || Tag.SHULKER_BOXES.isTagged(facType)) {
+                    || Tag.SHULKER_BOXES.isTagged(facType)
+                    || Tag.COPPER_CHESTS.isTagged(facType)) {
                 for (ItemStack stack : ((InventoryHolder) fac.getState()).getInventory().getContents()) {
 
                     if (!ItemUtil.isStackValid(stack))
diff --git a/src/main/java/com/sk89q/craftbook/util/InventoryUtil.java b/src/main/java/com/sk89q/craftbook/util/InventoryUtil.java
index 0eacd45b0..60512273e 100644
--- a/src/main/java/com/sk89q/craftbook/util/InventoryUtil.java
+++ b/src/main/java/com/sk89q/craftbook/util/InventoryUtil.java
@@ -1,6 +1,7 @@
 package com.sk89q.craftbook.util;
 
 import org.bukkit.Material;
+import org.bukkit.Tag;
 import org.bukkit.block.Block;
 import org.bukkit.block.BrewingStand;
 import org.bukkit.block.Chest;
@@ -371,7 +372,7 @@ public static boolean doesBlockHaveInventory(Block block) {
             case CRAFTER:
                 return true;
             default:
-                return false;
+                return Tag.COPPER_CHESTS.isTagged(block.getType());
         }
     }