Paper/patches/server/1045-General-ItemMeta-fixes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 27 Apr 2024 20:56:17 -0700
Subject: [PATCH] General ItemMeta fixes


diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index aa23d417272bb160bba8358a8ab0792b56bc0a01..eba5a27e452c4063567fb02d6aabdfb0446d5daf 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -326,7 +326,14 @@ public final class CraftItemStack extends ItemStack {
     // Paper end - improve handled tags on type change
     // Paper start
     public static void applyMetaToItem(net.minecraft.world.item.ItemStack itemStack, ItemMeta itemMeta) {
-        final CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator();
+        // Paper start - support updating profile after resolving it
+        final CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator() {
+            @Override
+            void skullCallback(final com.mojang.authlib.GameProfile gameProfile) {
+                itemStack.set(DataComponents.PROFILE, new net.minecraft.world.item.component.ResolvableProfile(gameProfile));
+            }
+        };
+        // Paper end - support updating profile after resolving it
         ((CraftMetaItem) itemMeta).applyToItem(tag);
         itemStack.applyComponents(tag.build());
     }
@@ -687,7 +694,14 @@ public final class CraftItemStack extends ItemStack {
         }
 
         if (!((CraftMetaItem) itemMeta).isEmpty()) {
-            CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator();
+            // Paper start - support updating profile after resolving it
+            CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator() {
+                @Override
+                void skullCallback(final com.mojang.authlib.GameProfile gameProfile) {
+                    item.set(DataComponents.PROFILE, new net.minecraft.world.item.component.ResolvableProfile(gameProfile));
+                }
+            };
+            // Paper end - support updating profile after resolving it
 
             ((CraftMetaItem) itemMeta).applyToItem(tag);
             item.restorePatch(tag.build());
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
index 2d6abecc94683f92da6be26b72ea829663b16d76..6a3b0c7f0cc3ffb17a231383ad103fa792d7b7ba 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
@@ -107,6 +107,7 @@ public class CraftMetaBanner extends CraftMetaItem implements BannerMeta {
     void applyToItem(CraftMetaItem.Applicator tag) {
         super.applyToItem(tag);
 
+        if (this.patterns.isEmpty()) return; // Paper - don't write empty patterns
         List<BannerPatternLayers.Layer> newPatterns = new ArrayList<>();
 
         for (Pattern p : this.patterns) {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBookSigned.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBookSigned.java
index 7f3733c29f2e79bffa24631efb20de49fde857f2..2ac5161d92d66d83b45d9ad40a704df9f3ea5e78 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBookSigned.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBookSigned.java
@@ -129,7 +129,7 @@ public class CraftMetaBookSigned extends CraftMetaItem implements BookMeta {
             for (Component page : this.pages) {
                 list.add(Filterable.passThrough(page));
             }
-            itemData.put(CraftMetaBookSigned.BOOK_CONTENT, new WrittenBookContent(Filterable.from(FilteredText.passThrough(this.title)), this.author, this.generation, list, this.resolved));
+            itemData.put(CraftMetaBookSigned.BOOK_CONTENT, new WrittenBookContent(Filterable.from(FilteredText.passThrough(this.title == null ? "" : this.title)), this.author == null ? "" : this.author, this.generation, list, this.resolved));
         }
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
index 8e0dd4b7a7a25a8beb27b507047bc48d8227627c..88245d8704f4df3075d592a68a4715565e9eed8c 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
@@ -186,9 +186,13 @@ class CraftMetaFirework extends CraftMetaItem implements FireworkMeta {
         }
 
         List<FireworkExplosion> effects = new ArrayList<>();
-        for (FireworkEffect effect : this.effects) {
-            effects.add(CraftMetaFirework.getExplosion(effect));
+        // Paper start - fix NPE with effects list being null
+        if (this.effects != null) {
+            for (FireworkEffect effect : this.effects) {
+                effects.add(CraftMetaFirework.getExplosion(effect));
+            }
         }
+        // Paper end
 
         itemTag.put(CraftMetaFirework.FIREWORKS, new Fireworks(this.power, effects));
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 8973a08f39279415e28a4fadf0015f1ab9581350..8dfba4091670a1f830d3a0128d7170f2b9b4ddb7 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -165,9 +165,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
         }
     }
 
-    static final class Applicator {
+    static abstract class Applicator { // Paper - support updating profile after resolving it
 
         final DataComponentPatch.Builder builder = DataComponentPatch.builder();
+        void skullCallback(com.mojang.authlib.GameProfile gameProfile) {} // Paper - support updating profile after resolving it
 
         <T> Applicator put(ItemMetaKeyType<T> key, T value) {
             this.builder.set(key.TYPE, value);
@@ -1397,7 +1398,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
 
     @Override
     public String getAsString() {
-        CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator();
+        CraftMetaItem.Applicator tag = new CraftMetaItem.Applicator() {}; // Paper - support updating profile after resolving it
         this.applyToItem(tag);
         DataComponentPatch patch = tag.build();
         Tag nbt = DataComponentPatch.CODEC.encodeStart(MinecraftServer.getDefaultRegistryAccess().createSerializationContext(NbtOps.INSTANCE), patch).getOrThrow();
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
index c769d2a210060f6829a6cbe739d6d9ab2f602644..1feffe289a1e714084bd37b5c5ad23a37dd58325 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
@@ -137,10 +137,10 @@ class CraftMetaSkull extends CraftMetaItem implements SkullMeta {
             // Fill in textures
             PlayerProfile ownerProfile = new CraftPlayerProfile(this.profile); // getOwnerProfile may return null
             if (ownerProfile.getTextures().isEmpty()) {
-                ownerProfile.update().thenAccept((filledProfile) -> {
+                ownerProfile.update().thenAcceptAsync((filledProfile) -> { // Paper - run on main thread
                     this.setOwnerProfile(filledProfile);
-                    tag.put(CraftMetaSkull.SKULL_PROFILE, new ResolvableProfile(this.profile));
-                });
+                    tag.skullCallback(this.profile); // Paper - actually set profile on itemstack
+                }, ((org.bukkit.craftbukkit.CraftServer) org.bukkit.Bukkit.getServer()).getServer()); // Paper - run on main thread
             }
         }