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path: root/patches/server/0685-Implement-enchantWithLevels-API.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Wed, 16 Mar 2022 20:35:21 -0700
Subject: [PATCH] Implement enchantWithLevels API


diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
index cd0b6819da81978b9186c83ee926e1fed5ee6fe4..6d1eab448f368be8e1d768712f80f2c4d93c5e1a 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
@@ -606,4 +606,29 @@ public final class CraftItemFactory implements ItemFactory {
         return eggItem == null ? null : new net.minecraft.world.item.ItemStack(eggItem).asBukkitMirror();
     }
     // Paper end - old getSpawnEgg API
+    // Paper start - enchantWithLevels API
+    @Override
+    public ItemStack enchantWithLevels(ItemStack itemStack, int levels, boolean allowTreasure, java.util.Random random) {
+        Preconditions.checkArgument(itemStack != null, "Argument 'itemStack' must not be null");
+        Preconditions.checkArgument(itemStack.getType() != Material.AIR, "Argument 'itemStack' must not be of type AIR");
+        Preconditions.checkArgument(itemStack.getAmount() > 0, "Argument 'itemStack' amount must be greater than 0");
+        Preconditions.checkArgument(levels > 0 && levels <= 30, "Argument 'levels' must be in range [1, 30] (attempted " + levels + ")");
+        Preconditions.checkArgument(random != null, "Argument 'random' must not be null");
+        final net.minecraft.world.item.ItemStack internalStack = CraftItemStack.asNMSCopy(itemStack);
+        if (internalStack.isEnchanted()) {
+            internalStack.set(net.minecraft.core.component.DataComponents.ENCHANTMENTS, null);
+        }
+        final net.minecraft.core.RegistryAccess registryAccess = net.minecraft.server.MinecraftServer.getServer().registryAccess();
+        final net.minecraft.core.Registry<Enchantment> enchantments = registryAccess.registryOrThrow(Registries.ENCHANTMENT);
+        final net.minecraft.world.item.ItemStack enchanted = net.minecraft.world.item.enchantment.EnchantmentHelper.enchantItem(
+            new org.bukkit.craftbukkit.util.RandomSourceWrapper(random),
+            internalStack,
+            levels,
+            enchantments.holders()
+                .<net.minecraft.core.Holder<Enchantment>>map(r -> r)
+                .filter(r -> allowTreasure || !r.is(EnchantmentTags.TREASURE))
+        );
+        return CraftItemStack.asCraftMirror(enchanted);
+    }
+    // Paper end - enchantWithLevels API
 }