SPIGOT-5802: Add SmithingRecipe API

nms-patches/RecipeSmithing.patch

@@ -0,0 +1,34 @@
+--- a/net/minecraft/server/RecipeSmithing.java
++++ b/net/minecraft/server/RecipeSmithing.java
+@@ -2,6 +2,13 @@
+ 
+ import com.google.gson.JsonElement;
+ import com.google.gson.JsonObject;
++// CraftBukkit start
++import org.bukkit.craftbukkit.inventory.CraftItemStack;
++import org.bukkit.craftbukkit.inventory.CraftRecipe;
++import org.bukkit.craftbukkit.inventory.CraftSmithingRecipe;
++import org.bukkit.craftbukkit.util.CraftNamespacedKey;
++import org.bukkit.inventory.Recipe;
++// CraftBukkit end
+ 
+ public class RecipeSmithing implements IRecipe<IInventory> {
+ 
+@@ -58,6 +65,17 @@
+         return Recipes.SMITHING;
+     }
+ 
++    // CraftBukkit start
++    @Override
++    public Recipe toBukkitRecipe() {
++        CraftItemStack result = CraftItemStack.asCraftMirror(this.c);
++
++        CraftSmithingRecipe recipe = new CraftSmithingRecipe(CraftNamespacedKey.fromMinecraft(this.d), result, CraftRecipe.toBukkit(this.a), CraftRecipe.toBukkit(this.b));
++
++        return recipe;
++    }
++    // CraftBukkit end
++
+     public static class a implements RecipeSerializer<RecipeSmithing> {
+ 
+         public a() {}

src/main/java/org/bukkit/craftbukkit/inventory/CraftSmithingRecipe.java

@@ -0,0 +1,29 @@
+package org.bukkit.craftbukkit.inventory;
+
+import net.minecraft.server.MinecraftServer;
+import org.bukkit.NamespacedKey;
+import org.bukkit.craftbukkit.util.CraftNamespacedKey;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.RecipeChoice;
+import org.bukkit.inventory.SmithingRecipe;
+
+public class CraftSmithingRecipe extends SmithingRecipe implements CraftRecipe {
+    public CraftSmithingRecipe(NamespacedKey key, ItemStack result, RecipeChoice base, RecipeChoice addition) {
+        super(key, result, base, addition);
+    }
+
+    public static CraftSmithingRecipe fromBukkitRecipe(SmithingRecipe recipe) {
+        if (recipe instanceof CraftSmithingRecipe) {
+            return (CraftSmithingRecipe) recipe;
+        }
+        CraftSmithingRecipe ret = new CraftSmithingRecipe(recipe.getKey(), recipe.getResult(), recipe.getBase(), recipe.getAddition());
+        return ret;
+    }
+
+    @Override
+    public void addToCraftingManager() {
+        ItemStack result = this.getResult();
+
+        MinecraftServer.getServer().getCraftingManager().addRecipe(new net.minecraft.server.RecipeSmithing(CraftNamespacedKey.toMinecraft(this.getKey()), toNMS(this.getBase(), true),  toNMS(this.getAddition(), true), CraftItemStack.asNMSCopy(result)));
+    }
+}