From 029b16d5aece041c94efa9067fe22301c6c66b47 Mon Sep 17 00:00:00 2001
From: Alex 'mcmonkey' Goodwin <agoodwin@freneticllc.com>
Date: Sat, 30 May 2020 09:28:29 -0700
Subject: [PATCH] add tag inventory.craftable_quantity

---
 .../denizen/objects/InventoryTag.java         | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java b/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
index 2f6fcbdb0d..80d97a0c36 100644
--- a/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
+++ b/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
@@ -2332,6 +2332,26 @@ else if (slot > object.getInventory().getSize() - 1) {
             return new ElementTag(((Keyed) recipe).getKey().toString());
         });
 
+        // <--[tag]
+        // @attribute <InventoryTag.craftable_quantity>
+        // @returns ElementTag(Number)
+        // @description
+        // Returns the quantity of items that would be received if this crafting inventory were fully crafted (eg via a shift click).
+        // -->
+        registerTag("craftable_quantity", (attribute, object) -> {
+            Recipe recipe;
+            if ((object.inventory instanceof CraftingInventory)) {
+                recipe = ((CraftingInventory) object.inventory).getRecipe();
+            }
+            else {
+                return null;
+            }
+            if (recipe == null) {
+                return null;
+            }
+            return new ElementTag(RecipeHelper.getMaximumOutputQuantity(recipe, (CraftingInventory) object.inventory) * recipe.getResult().getAmount());
+        });
+
         // <--[tag]
         // @attribute <InventoryTag.result>
         // @returns ItemTag