1 files changed, 66 insertions, 0 deletions
diff --git a/src/main/java/net/uomc/mineshaft/crafting/CraftingRecipe.java b/src/main/java/net/uomc/mineshaft/crafting/CraftingRecipe.java
new file mode 100644
index 0000000..cb4892e
--- /dev/null
+++ b/src/main/java/net/uomc/mineshaft/crafting/CraftingRecipe.java
@@ -0,0 +1,66 @@
+package net.uomc.mineshaft.crafting;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import net.uomc.mineshaft.MineshaftItem;
+
+public class CraftingRecipe {
+    MineshaftItem item;
+    long quantity;
+    Map<MineshaftItem, Long> ingredients;
+
+    String buyMessage;
+
+    private CraftingRecipe(MineshaftItem item, long quantity, Map<MineshaftItem, Long> ingredients) {
+        this.item = item;
+        this.quantity = quantity;
+        this.ingredients = ingredients;
+    }
+
+    public static CraftingRecipe make(MineshaftItem item) {
+        Map<MineshaftItem, Long> ingredients = new HashMap<>();
+        return new CraftingRecipe(item, 1, ingredients);
+    }
+
+    public CraftingRecipe addIngredient(MineshaftItem item, long amount) {
+        ingredients.put(item, amount);
+        return this;
+    }
+
+    public MineshaftItem getItem() {
+        return item;
+    }
+
+    public long getQuantity() {
+        return quantity;
+    }
+
+    public Map<MineshaftItem, Long> getIngredients() {
+        return ingredients;
+    }
+
+    public String getBuyMessage() {
+        return buyMessage;
+    }
+
+    public CraftingRecipe setBuyMessage(String message) {
+        buyMessage = message;
+        return this;
+    }
+    public Map<MineshaftItem, Long> getMissingIngredients(Map<MineshaftItem, Long> items) {
+        return getMissingIngredients(items, 1);
+    }
+
+    public Map<MineshaftItem, Long> getMissingIngredients(Map<MineshaftItem, Long> items, long amount) {
+        Map<MineshaftItem, Long> lacking = new HashMap<MineshaftItem, Long>();
+        getIngredients().forEach((item, q) -> {
+            if (items.get(item)  < q* amount) {
+                lacking.put(item, (q * amount) - items.get(item));
+            }
+        });
+
+        return Collections.unmodifiableMap(lacking);
+    }
+
+}