RepairRecipe.class

package com.gamebuster19901.supernatural.crafting;

import java.util.ArrayList;
import java.util.List;

import javax.annotation.Nullable;

//import com.gamebuster19901.supernatural.technical.DebugException;

import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.world.World;



public class RepairRecipe implements IRecipe{
    protected final Item itemToRepair;//the item type that will be repaired
    protected final Item[] repairMaterial;//the materials that will repair the item

    public RepairRecipe(Item itemToRepair, Item repairMaterial){
        this.itemToRepair = itemToRepair;
        this.repairMaterial = new Item[]{repairMaterial};
    }

    public RepairRecipe(Item itemToRepair, ItemStack repairMaterial){
        this.itemToRepair = itemToRepair;
        this.repairMaterial = new Item[]{repairMaterial.getItem()};
    }

    public RepairRecipe(Item itemToRepair, List repairMaterial){
        this.itemToRepair = itemToRepair;
        this.repairMaterial = new Item[repairMaterial.size()];
        for (int j = 0; j < repairMaterial.size(); j++){
            if (repairMaterial.get(j) instanceof Item){
                this.repairMaterial[j] = (Item) repairMaterial.get(j);
            }
            else if (repairMaterial.get(j) instanceof ItemStack){
                this.repairMaterial[j] = ((ItemStack) repairMaterial.get(j)).getItem();
            }
            else{
                throw new IllegalArgumentException(repairMaterial.get(j).getClass().getName() + " is not an item or itemstack (" + j + ")");
            }
        }
    }

    @Override
    public ItemStack getCraftingResult(InventoryCrafting inv){
        System.out.println("CraftingResult");
        List<ItemStack> list = new ArrayList<ItemStack>();
        int amt = 0;//how many repair items are in the crafting grid
        int amtItemsToRepairFound = 0;
        int amtrepairable = 0;//how many repairable items are in the grid
        int durability;//current durability of the item to repair
        ItemStack repairedItem = null;

        //DebugException e = new DebugException();
        //e.printStackTrace();

        for (int i = 0; i < inv.getSizeInventory(); ++i){//loop slots in crafting inventory
            ItemStack itemstack = inv.getStackInSlot(i);
            if (itemstack != null){//if slot is not empty
                list.add(itemstack);//add item to list
                for (Item item : repairMaterial){
                    if (itemstack.getItem().equals(item) && !itemstack.getItem().equals(itemToRepair)){ //if the item is a repair material and is not the item being repaired
                        amt += itemstack.stackSize;
                        System.out.println(itemstack.stackSize); //debug
                    }
                }
                if (itemstack.getItem().equals(itemToRepair)){
                    repairedItem = itemstack;
                    durability = itemstack.getItemDamage();
                    amtItemsToRepairFound++;
                    if (amtItemsToRepairFound != 1){ //can only repair one item at a time, no more, no less.
                        return null; //no need to keep checking
                    }
                }
            }
        }
        if (repairedItem == null){
            //System.out.println("repaired item is null");
            return null;
        }
        if (repairedItem.getItemDamage() - amt >= 0 && amt > 0){ //if the item's damage will not be negative and has changed
            return new ItemStack(itemToRepair, 1, repairedItem.getItemDamage() - amt);
        }
        System.out.println("Result is null");
        return null;
    }

    @Override
    public boolean matches(InventoryCrafting inv, World worldIn) {
        System.out.println(1);//debug
        return true;
    }

    @Override
    public int getRecipeSize() {
        System.out.println(2);//debug
        return 0;
    }

    @Override
    public ItemStack getRecipeOutput() {
        System.out.println(3);//debug
        return null;
    }

    @Override
    public ItemStack[] getRemainingItems(InventoryCrafting inv) {
        System.out.println(4);//debug
        ItemStack[] arrayStacks = new ItemStack[inv.getSizeInventory()];
        for (int i = 0; i < arrayStacks.length; ++i){
            inv.setInventorySlotContents(i, null); //all items in the crafting grid were used, even ones in a stack
        }
        return arrayStacks;
    }
}