BloodMagic/src/main/java/WayofTime/bloodmagic/api/ItemStackWrapper.java

package WayofTime.bloodmagic.api;

import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.List;

public class ItemStackWrapper {
    public final Item item;
    public final int stackSize;
    public final int meta;
    public NBTTagCompound nbtTag;

    public ItemStackWrapper(Item item, int stackSize, int meta) {
        this.item = item;
        this.stackSize = stackSize;
        this.meta = meta;
    }

    public ItemStackWrapper(Item item, int stackSize) {
        this(item, stackSize, 0);
    }

    public ItemStackWrapper(Item item) {
        this(item, 1, 0);
    }

    public ItemStackWrapper(Block block, int stackSize, int meta) {
        this(Item.getItemFromBlock(block), stackSize, meta);
    }

    public ItemStackWrapper(Block block, int stackSize) {
        this(block, stackSize, 0);
    }

    public ItemStackWrapper(Block block) {
        this(block, 1, 0);
    }

    public ItemStackWrapper(BlockStack blockStack) {
        this(blockStack.getBlock(), 1, blockStack.getMeta());
    }

    public ItemStack toStack() {
        return new ItemStack(item, stackSize, meta);
    }

    public String getDisplayName() {
        return toStack().getDisplayName();
    }

    @Override
    public String toString() {
        return stackSize + "x" + item.getUnlocalizedName() + "@" + this.meta;
    }

    public ItemStack toStack(int count) {
        ItemStack result = new ItemStack(item, count, meta);
        result.setTagCompound(nbtTag);
        return result;
    }

    public Item getItem() {
        return item;
    }

    public int getStackSize() {
        return stackSize;
    }

    public int getMeta() {
        return meta;
    }

    public NBTTagCompound getNbtTag() {
        return nbtTag;
    }

    public void setNbtTag(NBTTagCompound nbtTag) {
        this.nbtTag = nbtTag;
    }

    @Nullable
    public static ItemStackWrapper getHolder(ItemStack stack) {
        if (stack.isEmpty())
            return null;

        ItemStackWrapper wrapper = new ItemStackWrapper(stack.getItem(), stack.getCount(), stack.getItemDamage());
        wrapper.setNbtTag(stack.getTagCompound());
        return wrapper;
    }

    public static List<ItemStackWrapper> toWrapperList(List<ItemStack> itemStackList) {
        List<ItemStackWrapper> wrapperList = new ArrayList<ItemStackWrapper>();
        for (ItemStack stack : itemStackList)
            wrapperList.add(ItemStackWrapper.getHolder(stack));

        return wrapperList;
    }

    public static List<ItemStack> toStackList(List<ItemStackWrapper> wrapperList) {
        List<ItemStack> stackList = new ArrayList<ItemStack>();
        for (ItemStackWrapper wrapper : wrapperList)
            stackList.add(wrapper.toStack());

        return stackList;
    }
}