Paper/patches/api/0462-Adding-PredicateChoice-to-Paper-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: derverdox <mail.ysp@web.de>
Date: Mon, 4 Dec 2023 01:54:38 +0100
Subject: [PATCH] Adding PredicateChoice to Paper API


diff --git a/src/main/java/org/bukkit/inventory/RecipeChoice.java b/src/main/java/org/bukkit/inventory/RecipeChoice.java
index 523818cbb0d6c90481ec97123e7fe0e2ff4eea14..6b9bbead57166d7622cf31b96c252d56fafc05fb 100644
--- a/src/main/java/org/bukkit/inventory/RecipeChoice.java
+++ b/src/main/java/org/bukkit/inventory/RecipeChoice.java
@@ -233,4 +233,64 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
             return "ExactChoice{" + "choices=" + choices + '}';
         }
     }
+
+    /**
+     * Represents a choice that matches when the item predicate is fulfilled.
+     */
+    public static class PredicateChoice implements RecipeChoice {
+        private final ItemPredicate itemPredicate;
+
+        public PredicateChoice(ItemPredicate itemPredicate) {
+            Preconditions.checkArgument(itemPredicate != null, "itemPredicate");
+            Preconditions.checkArgument(!itemPredicate.recipeBookExamples().isEmpty(), "Must have at least one template");
+            this.itemPredicate = itemPredicate;
+        }
+
+        @Override
+        public final boolean test(final ItemStack stack) {
+            return itemPredicate.test(stack);
+        }
+
+        @Override
+        public @NotNull ItemStack getItemStack() {
+            ItemStack stack = new ItemStack(itemPredicate.recipeBookExamples().get(0));
+            // For compat
+            if (itemPredicate.recipeBookExamples().size() > 1) {
+                stack.setDurability(Short.MAX_VALUE);
+            }
+
+            return stack;
+        }
+
+        @Override
+        public PredicateChoice clone() {
+            return new PredicateChoice(new ItemPredicate() {
+                @Override
+                public List<ItemStack> recipeBookExamples() {
+                    return List.copyOf(itemPredicate.recipeBookExamples());
+                }
+
+                @Override
+                public boolean test(final ItemStack stack) {
+                    return itemPredicate.test(stack);
+                }
+            });
+        }
+
+        public ItemPredicate getItemPredicate() {
+            return itemPredicate;
+        }
+
+        @Override
+        public boolean equals(final Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            PredicateChoice that = (PredicateChoice) o;
+            return Objects.equals(itemPredicate, that.itemPredicate);
+        }
+
+        public static interface ItemPredicate extends Predicate<ItemStack> {
+            List<ItemStack> recipeBookExamples();
+        }
+    }
 }