From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 15 May 2021 22:10:50 -0700
Subject: [PATCH] ItemStack repair check API


diff --git a/src/main/java/org/bukkit/UnsafeValues.java b/src/main/java/org/bukkit/UnsafeValues.java
index 5a5e5bd70322700c92fd8caf781dab662643c824..b134d63351faa0d6e5469e0a09442ab82f8d60e3 100644
--- a/src/main/java/org/bukkit/UnsafeValues.java
+++ b/src/main/java/org/bukkit/UnsafeValues.java
@@ -160,6 +160,16 @@ public interface UnsafeValues {
      */
     public io.papermc.paper.inventory.ItemRarity getItemStackRarity(ItemStack itemStack);
 
+    /**
+     * Checks if an itemstack can be repaired with another itemstack.
+     * Returns false if either argument's type is not an item ({@link Material#isItem()}).
+     *
+     * @param itemToBeRepaired the itemstack to be repaired
+     * @param repairMaterial the repair material
+     * @return true if valid repair, false if not
+     */
+    public boolean isValidRepairItemStack(@org.jetbrains.annotations.NotNull ItemStack itemToBeRepaired, @org.jetbrains.annotations.NotNull ItemStack repairMaterial);
+
     /**
      * Returns the server's protocol version.
      *
diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
index d4bc360cf7f0b0fbed07dc10b5778605fde7c219..99768256af87b72b3366898278b52acef4ae4ded 100644
--- a/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -936,5 +936,27 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
     public io.papermc.paper.inventory.ItemRarity getRarity() {
         return Bukkit.getUnsafe().getItemStackRarity(this);
     }
+
+    /**
+     * Checks if an itemstack can repair this itemstack.
+     * Returns false if {@code this} or {@code repairMaterial}'s type is not an item ({@link Material#isItem()}).
+     *
+     * @param repairMaterial the repair material
+     * @return true if it is repairable by, false if not
+     */
+    public boolean isRepairableBy(@NotNull ItemStack repairMaterial) {
+        return Bukkit.getUnsafe().isValidRepairItemStack(this, repairMaterial);
+    }
+
+    /**
+     * Checks if this itemstack can repair another.
+     * Returns false if {@code this} or {@code toBeRepaired}'s type is not an item ({@link Material#isItem()}).
+     *
+     * @param toBeRepaired the itemstack to be repaired
+     * @return true if it can repair, false if not
+     */
+    public boolean canRepair(@NotNull ItemStack toBeRepaired) {
+        return Bukkit.getUnsafe().isValidRepairItemStack(toBeRepaired, this);
+    }
     // Paper end
 }