Fix discarding of custom trim patterns/materials (#4642)

* Fix discarding of custom trim patterns/materials

* Rename `stripNamespace` method to reflect its behaviour

core/src/main/java/org/geysermc/geyser/inventory/recipe/TrimRecipe.java

@@ -47,7 +47,7 @@ public final class TrimRecipe {
     public static final ItemDescriptorWithCount TEMPLATE = tagDescriptor("minecraft:trim_templates");
 
     public static TrimMaterial readTrimMaterial(GeyserSession session, RegistryEntry entry) {
-        String key = stripNamespace(entry.getId());
+        String key = stripMinecraftNamespace(entry.getId());
 
         // Color is used when hovering over the item
         // Find the nearest legacy color from the RGB Java gives us to work with
@@ -67,7 +67,7 @@ public final class TrimRecipe {
     }
 
     public static TrimPattern readTrimPattern(GeyserSession session, RegistryEntry entry) {
-        String key = stripNamespace(entry.getId());
+        String key = stripMinecraftNamespace(entry.getId());
 
         String itemIdentifier = entry.getData().getString("template_item");
         ItemMapping itemMapping = session.getItemMappings().getMapping(itemIdentifier);
@@ -79,10 +79,14 @@ public final class TrimRecipe {
     }
 
     // TODO find a good place for a stripNamespace util method
-    private static String stripNamespace(String identifier) {
+    private static String stripMinecraftNamespace(String identifier) {
         int i = identifier.indexOf(':');
         if (i >= 0) {
-            return identifier.substring(i + 1);
+            String namespace = identifier.substring(0, i);
+            // Only strip minecraft namespace
+            if (namespace.equals("minecraft")) {
+                return identifier.substring(i + 1);
+            }
         }
         return identifier;
     }

core/src/main/java/org/geysermc/geyser/item/type/ArmorItem.java

@@ -51,14 +51,15 @@ public class ArmorItem extends Item {
 
         ArmorTrim trim = components.get(DataComponentType.TRIM);
         if (trim != null) {
-            // discard custom trim patterns/materials to prevent visual glitches on bedrock
-            if (trim.material().isCustom() || trim.pattern().isCustom()) {
-                return;
-            }
-
             TrimMaterial material = session.getRegistryCache().trimMaterials().byId(trim.material().id());
             TrimPattern pattern = session.getRegistryCache().trimPatterns().byId(trim.pattern().id());
 
+            // discard custom trim patterns/materials to prevent visual glitches on bedrock
+            if (!getNamespace(material.getMaterialId()).equals("minecraft")
+                    || !getNamespace(pattern.getPatternId()).equals("minecraft")) {
+                return;
+            }
+
             NbtMapBuilder trimBuilder = NbtMap.builder();
             // bedrock has an uppercase first letter key, and the value is not namespaced
             trimBuilder.put("Material", material.getMaterialId());
@@ -71,4 +72,13 @@ public class ArmorItem extends Item {
     public boolean isValidRepairItem(Item other) {
         return material.getRepairIngredient() == other;
     }
+
+    // TODO maybe some kind of namespace util?
+    private static String getNamespace(String identifier) {
+        int i = identifier.indexOf(':');
+        if (i >= 0) {
+            return identifier.substring(0, i);
+        }
+        return "minecraft";
+    }
 }