/*
 * This file ("ContainerDropper.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2017 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.inventory;

import de.ellpeck.actuallyadditions.mod.blocks.InitBlocks;
import de.ellpeck.actuallyadditions.mod.inventory.slot.SlotItemHandlerUnconditioned;
import de.ellpeck.actuallyadditions.mod.tile.TileEntityBase;
import de.ellpeck.actuallyadditions.mod.tile.TileEntityDropper;
import de.ellpeck.actuallyadditions.mod.util.StackUtil;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;


public class ContainerDropper extends Container{

    private final TileEntityDropper dropper;
    EntityPlayer player;

    public ContainerDropper(EntityPlayer player, TileEntityBase tile){
        this.dropper = (TileEntityDropper)tile;
        this.player = player;
        InventoryPlayer inventory = player.inventory;
        for(int i = 0; i < 3; i++){
            for(int j = 0; j < 3; j++){
                this.addSlotToContainer(new SlotItemHandlerUnconditioned(this.dropper.inv, j+i*3, 62+j*18, 21+i*18));
            }
        }

        for(int i = 0; i < 3; i++){
            for(int j = 0; j < 9; j++){
                this.addSlotToContainer(new Slot(inventory, j+i*9+9, 8+j*18, 97+i*18));
            }
        }
        for(int i = 0; i < 9; i++){
            this.addSlotToContainer(new Slot(inventory, i, 8+i*18, 155));
        }
    }

    @Override
    public ItemStack transferStackInSlot(EntityPlayer player, int slot){
        int inventoryStart = 9;
        int inventoryEnd = inventoryStart+26;
        int hotbarStart = inventoryEnd+1;
        int hotbarEnd = hotbarStart+8;

        Slot theSlot = this.inventorySlots.get(slot);

        if(theSlot != null && theSlot.getHasStack()){
            ItemStack newStack = theSlot.getStack();
            ItemStack currentStack = newStack.copy();

            //Other Slots in Inventory excluded
            if(slot >= inventoryStart){
                //Shift from Inventory
                if(!this.mergeItemStack(newStack, 0, 9, false)){
                    //
                    if(slot >= inventoryStart && slot <= inventoryEnd){
                        if(!this.mergeItemStack(newStack, hotbarStart, hotbarEnd+1, false)){
                            return StackUtil.getEmpty();
                        }
                    }
                    else if(slot >= inventoryEnd+1 && slot < hotbarEnd+1 && !this.mergeItemStack(newStack, inventoryStart, inventoryEnd+1, false)){
                        return StackUtil.getEmpty();
                    }
                }
            }
            else if(!this.mergeItemStack(newStack, inventoryStart, hotbarEnd+1, false)){
                return StackUtil.getEmpty();
            }

            if(!StackUtil.isValid(newStack)){
                theSlot.putStack(StackUtil.getEmpty());
            }
            else{
                theSlot.onSlotChanged();
            }

            if(newStack.getCount() == currentStack.getCount()){
                return StackUtil.getEmpty();
            }
            theSlot.onTake(player, newStack);

            return currentStack;
        }
        return StackUtil.getEmpty();
    }

    @Override
    public boolean canInteractWith(EntityPlayer player){
        return this.dropper.canPlayerUse(player);
    }
    
    @Override
    public void onContainerClosed(EntityPlayer playerIn) {
    	super.onContainerClosed(playerIn);
        if (!player.isSpectator()) dropper.getWorld().notifyNeighborsOfStateChange(dropper.getPos(), InitBlocks.blockDropper, false);
    }
}