Applied-Energistics-2-tilera-Edition/src/main/java/appeng/core/sync/packets/PacketInventoryAction.java

/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.core.sync.packets;

import java.io.IOException;

import appeng.api.storage.data.IAEItemStack;
import appeng.client.ClientHelper;
import appeng.container.AEBaseContainer;
import appeng.container.ContainerOpenContext;
import appeng.container.implementations.ContainerCraftAmount;
import appeng.core.sync.AppEngPacket;
import appeng.core.sync.GuiBridge;
import appeng.core.sync.network.INetworkInfo;
import appeng.helpers.InventoryAction;
import appeng.util.Platform;
import appeng.util.item.AEItemStack;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.tileentity.TileEntity;

public class PacketInventoryAction extends AppEngPacket {
    private final InventoryAction action;
    private final int slot;
    private final long id;
    private final IAEItemStack slotItem;

    // automatic.
    public PacketInventoryAction(final ByteBuf stream) throws IOException {
        this.action = InventoryAction.values()[stream.readInt()];
        this.slot = stream.readInt();
        this.id = stream.readLong();
        final boolean hasItem = stream.readBoolean();
        if (hasItem) {
            this.slotItem = AEItemStack.loadItemStackFromPacket(stream);
        } else {
            this.slotItem = null;
        }
    }

    // api
    public PacketInventoryAction(
        final InventoryAction action, final int slot, final IAEItemStack slotItem
    ) throws IOException {
        if (Platform.isClient()) {
            throw new IllegalStateException(
                "invalid packet, client cannot post inv actions with stacks."
            );
        }

        this.action = action;
        this.slot = slot;
        this.id = 0;
        this.slotItem = slotItem;

        final ByteBuf data = Unpooled.buffer();

        data.writeInt(this.getPacketID());
        data.writeInt(action.ordinal());
        data.writeInt(slot);
        data.writeLong(this.id);

        if (slotItem == null) {
            data.writeBoolean(false);
        } else {
            data.writeBoolean(true);
            slotItem.writeToPacket(data);
        }

        this.configureWrite(data);
    }

    // api
    public PacketInventoryAction(
        final InventoryAction action, final int slot, final long id
    ) {
        this.action = action;
        this.slot = slot;
        this.id = id;
        this.slotItem = null;

        final ByteBuf data = Unpooled.buffer();

        data.writeInt(this.getPacketID());
        data.writeInt(action.ordinal());
        data.writeInt(slot);
        data.writeLong(id);
        data.writeBoolean(false);

        this.configureWrite(data);
    }

    @Override
    public void serverPacketData(
        final INetworkInfo manager, final AppEngPacket packet, final EntityPlayer player
    ) {
        final EntityPlayerMP sender = (EntityPlayerMP) player;
        if (sender.openContainer instanceof AEBaseContainer) {
            final AEBaseContainer baseContainer = (AEBaseContainer) sender.openContainer;
            if (this.action == InventoryAction.AUTO_CRAFT) {
                final ContainerOpenContext context = baseContainer.getOpenContext();
                if (context != null) {
                    final TileEntity te = context.getTile();
                    Platform.openGUI(
                        sender,
                        te,
                        baseContainer.getOpenContext().getSide(),
                        GuiBridge.GUI_CRAFTING_AMOUNT
                    );

                    if (sender.openContainer instanceof ContainerCraftAmount) {
                        final ContainerCraftAmount cca
                            = (ContainerCraftAmount) sender.openContainer;

                        if (baseContainer.getTargetStack() != null) {
                            cca.getCraftingItem().putStack(
                                baseContainer.getTargetStack().getItemStack()
                            );
                            cca.setItemToCraft(baseContainer.getTargetStack());
                        }

                        cca.detectAndSendChanges();
                    }
                }
            } else {
                baseContainer.doAction(sender, this.action, this.slot, this.id);
            }
        }
    }

    @Override
    public void clientPacketData(
        final INetworkInfo network, final AppEngPacket packet, final EntityPlayer player
    ) {
        if (this.action == InventoryAction.UPDATE_HAND) {
            if (this.slotItem == null) {
                ClientHelper.proxy.getPlayers().get(0).inventory.setItemStack(null);
            } else {
                ClientHelper.proxy.getPlayers().get(0).inventory.setItemStack(
                    this.slotItem.getItemStack()
                );
            }
        }
    }
}