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 8635846c9f672e39f0929eec7bf83b22536ed284..51f1a09164d501de6d2561ed90175f2c24a668c1 100644
--- a/src/main/java/org/bukkit/UnsafeValues.java
+++ b/src/main/java/org/bukkit/UnsafeValues.java
@@ -185,5 +185,15 @@ public interface UnsafeValues {
      * @return the server's protocol version
      */
     int getProtocolVersion();
+
+    /**
+     * 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);
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
index decc49d86de34c43daa04316320288fa33f935e5..b2a9cb36d3bd0ba604514457294e337364a67756 100644
--- a/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -911,5 +911,27 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
     public io.papermc.paper.inventory.ItemRarity getRarity() {
         return io.papermc.paper.inventory.ItemRarity.valueOf(this.getItemMeta().getRarity().name());
     }
+
+    /**
+     * 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
 }