/*
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If
 * not, see <http://www.gnu.org/licenses/>.
 */
package silentium.gameserver.network.serverpackets;

import java.util.Arrays;

import silentium.gameserver.model.L2ItemInstance;
import silentium.gameserver.model.TradeList;
import silentium.gameserver.model.TradeList.TradeItem;
import silentium.gameserver.model.actor.instance.L2PcInstance;

public class TradeItemUpdate extends L2GameServerPacket
{
	private L2ItemInstance[] _items;
	private TradeItem[] _currentTrade;

	public TradeItemUpdate(TradeList trade, L2PcInstance activeChar)
	{
		_items = activeChar.getInventory().getItems();
		_currentTrade = trade.getItems();
	}

	private int getItemCount(int objectId)
	{
		for (L2ItemInstance item : _items)
			if (item.getObjectId() == objectId)
				return item.getCount();

		return 0;
	}

	@Override
	protected final void writeImpl()
	{
		writeC(0x74);
		try
		{
			writeH(_currentTrade.length);
			for (TradeItem item : _currentTrade)
			{
				int availableCount = getItemCount(item.getObjectId()) - item.getCount();
				boolean stackable = item.getItem().isStackable();

				if (availableCount == 0)
				{
					availableCount = 1;
					stackable = false;
				}

				writeH(stackable ? 3 : 2);
				writeH(item.getItem().getType1());
				writeD(item.getObjectId());
				writeD(item.getItem().getItemId());
				writeD(availableCount);
				writeH(item.getItem().getType2());
				writeH(0x00);
				writeD(item.getItem().getBodyPart());
				writeH(item.getEnchant());
				writeH(0x00);
				writeH(0x00);
			}
		}
		catch (Exception ex)
		{
			ex.printStackTrace();
		}
		finally
		{
			Arrays.fill(_items, null);
			Arrays.fill(_currentTrade, null);
			_items = null;
			_currentTrade = null;
		}
	}
}