package us.xvicario.rpglevel;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;

public class TileEntityLevelUpStation extends TileEntity implements IInventory {

    private ItemStack[] inv;

    public TileEntityLevelUpStation() {
        inv = new ItemStack[9];
    }

    @Override
    public void closeChest() {}

    @Override
    public ItemStack decrStackSize(int i, int j) {
        ItemStack stack = getStackInSlot(i);
        if (stack != null) {
            if (stack.stackSize <= j) {
                setInventorySlotContents(i, null);
            } else {
                stack = stack.splitStack(j);
                if (stack.stackSize == 0) {
                    setInventorySlotContents(i,null);
                }
            }
        }
        return stack;
    }

    @Override
    public String getInvName() {
        return "rpglevel.levelUpStation";
    }

    @Override
    public int getInventoryStackLimit() {
        return 1;
    }

    @Override
    public int getSizeInventory() {
        return inv.length;
    }

    @Override
    public ItemStack getStackInSlot(int i) {
        return inv[i];
    }

    @Override
    public ItemStack getStackInSlotOnClosing(int i) {
        ItemStack stack = getStackInSlot(i);
        if (stack != null) {
            setInventorySlotContents(i, null);
        }
        return stack;
    }

    @Override
    public boolean isInvNameLocalized() {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean isItemValidForSlot(int i, ItemStack itemstack) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean isUseableByPlayer(EntityPlayer entityplayer) {
        return worldObj.getBlockTileEntity(xCoord, yCoord, zCoord) == this && entityplayer.getDistanceSq(xCoord+0.5, yCoord+0.5, zCoord+0.5) < 64;
    }

    @Override
    public void openChest() {}

    @Override
    public void setInventorySlotContents(int i, ItemStack itemstack) {
        inv[i] = itemstack;
        if (itemstack != null && itemstack.stackSize > getInventoryStackLimit()) {
            itemstack.stackSize = getInventoryStackLimit();
        }
    }

    @Override public void readFromNBT(NBTTagCompound tagCompound) {
        super.readFromNBT(tagCompound);
        NBTTagList tagList = tagCompound.getTagList("Inventory");
        for (int i = 0; i < tagList.tagCount(); i++) {
            NBTTagCompound tag = (NBTTagCompound) tagList.tagAt(i);
            byte slot = tag.getByte("Slot");
            if (slot >= 0 && slot < inv.length) {
                inv[slot] = ItemStack.loadItemStackFromNBT(tag);
            }
        }
    }

    @Override public void writeToNBT(NBTTagCompound tagCompound) {
        super.writeToNBT(tagCompound);
        NBTTagList itemList = new NBTTagList();
        for (int i = 0; i < inv.length; i++) {
            ItemStack stack = inv[i];
            if (stack != null) {
                NBTTagCompound tag = new NBTTagCompound();
                tag.setByte("Slot", (byte)i);
                stack.writeToNBT(tag);
                itemList.appendTag(tag);
            }
        }
        tagCompound.setTag("Inventory", itemList);
    }
}