package com.pahimar.ee3.tileentity;

import com.pahimar.ee3.lib.Strings;

import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;


public class TileAludel extends TileEE implements IInventory {

    /**
     * The ItemStacks that hold the items currently being used in the Aludel
     */
    private ItemStack[] inventory;
    
    public TileAludel() {
        
        inventory = new ItemStack[4];
    }
    
    @Override
    public int getSizeInventory() {

        return this.inventory.length;
    }

    @Override
    public ItemStack getStackInSlot(int slot) {

        return this.inventory[slot];
    }

    @Override
    public ItemStack decrStackSize(int slot, int amount) {

        ItemStack itemStack = getStackInSlot(slot);
        if (itemStack != null) {
            if (itemStack.stackSize <= amount) {
                setInventorySlotContents(slot, null);
            }
            else {
                itemStack = itemStack.splitStack(amount);
                if (itemStack.stackSize == 0) {
                    setInventorySlotContents(slot, null);
                }
            }
        }
        
        return itemStack;
    }

    @Override
    public ItemStack getStackInSlotOnClosing(int slot) {

        ItemStack itemStack = getStackInSlot(slot);
        if (itemStack != null) {
            setInventorySlotContents(slot, null);
        }
        return itemStack;
    }

    @Override
    public void setInventorySlotContents(int slot, ItemStack itemStack) {

        inventory[slot] = itemStack;
        if (itemStack != null && itemStack.stackSize > getInventoryStackLimit()) {
            itemStack.stackSize = getInventoryStackLimit();
        }
    }

    @Override
    public String getInvName() {

        return "container." + Strings.ALUDEL_NAME;
    }

    @Override
    public int getInventoryStackLimit() {

        return 64;
    }

    @Override
    public void openChest() {
        
    }

    @Override
    public void closeChest() {
        
    }
    
    public void readFromNBT(NBTTagCompound nbtTagCompound) {

        super.readFromNBT(nbtTagCompound);

        // Read in the ItemStacks in the inventory from NBT
        NBTTagList tagList = nbtTagCompound.getTagList("Items");
        this.inventory = new ItemStack[this.getSizeInventory()];
        for (int i = 0; i < tagList.tagCount(); ++i) {
            NBTTagCompound tagCompound = (NBTTagCompound) tagList.tagAt(i);
            byte slot = tagCompound.getByte("Slot");
            if (slot >= 0 && slot < this.inventory.length) {
                this.inventory[slot] = ItemStack.loadItemStackFromNBT(tagCompound);
            }
        }
    }

    public void writeToNBT(NBTTagCompound nbtTagCompound) {

        super.writeToNBT(nbtTagCompound);

        // Write the ItemStacks in the inventory to NBT
        NBTTagList tagList = new NBTTagList();
        for (int currentIndex = 0; currentIndex < this.inventory.length; ++currentIndex) {
            if (this.inventory[currentIndex] != null) {
                NBTTagCompound tagCompound = new NBTTagCompound();
                tagCompound.setByte("Slot", (byte) currentIndex);
                this.inventory[currentIndex].writeToNBT(tagCompound);
                tagList.appendTag(tagCompound);
            }
        }
        nbtTagCompound.setTag("Items", tagList);
    }
}