/*
 * 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.model.itemcontainer;

import java.util.List;

import javolution.util.FastList;
import silentium.gameserver.model.L2ItemInstance;
import silentium.gameserver.model.L2ItemInstance.ItemLocation;
import silentium.gameserver.model.L2Object;
import silentium.gameserver.model.L2World;
import silentium.gameserver.model.actor.instance.L2PcInstance;
import silentium.gameserver.model.actor.instance.L2PetInstance;
import silentium.gameserver.tables.ItemTable;
import silentium.gameserver.templates.item.L2EtcItemType;
import silentium.gameserver.templates.item.L2Item;

public class PetInventory extends Inventory
{
	private final L2PetInstance _owner;

	public PetInventory(L2PetInstance owner)
	{
		_owner = owner;
	}

	@Override
	public L2PetInstance getOwner()
	{
		return _owner;
	}

	@Override
	public int getOwnerId()
	{
		// gets the L2PcInstance-owner's ID
		int id;
		try
		{
			id = _owner.getOwner().getObjectId();
		}
		catch (NullPointerException e)
		{
			return 0;
		}
		return id;
	}

	/**
	 * Refresh the weight of equipment loaded
	 */
	@Override
	protected void refreshWeight()
	{
		super.refreshWeight();
		getOwner().updateAndBroadcastStatus(1);
	}

	public boolean validateCapacity(L2ItemInstance item)
	{
		int slots = 0;

		if (!(item.isStackable() && getItemByItemId(item.getItemId()) != null) && item.getItemType() != L2EtcItemType.HERB)
			slots++;

		return validateCapacity(slots);
	}

	@Override
	public boolean validateCapacity(int slots)
	{
		return (_items.size() + slots <= _owner.getInventoryLimit());
	}

	public boolean validateWeight(L2ItemInstance item, long count)
	{
		int weight = 0;

		L2Item template = ItemTable.getInstance().getTemplate(item.getItemId());
		if (template == null)
			return false;

		weight += count * template.getWeight();
		return validateWeight(weight);
	}

	@Override
	public boolean validateWeight(int weight)
	{
		return (_totalWeight + weight <= _owner.getMaxLoad());
	}

	@Override
	protected ItemLocation getBaseLocation()
	{
		return ItemLocation.PET;
	}

	@Override
	protected ItemLocation getEquipLocation()
	{
		return ItemLocation.PET_EQUIP;
	}

	@Override
	public void restore()
	{
		super.restore();

		// check for equipped items from other pets
		for (L2ItemInstance item : _items)
		{
			if (item.isEquipped())
			{
				if (!item.getItem().checkCondition(getOwner(), getOwner(), false))
					unEquipItemInSlot(item.getLocationSlot());
			}
		}
	}

	@Override
	public void deleteMe()
	{
		// Transfer items only if the items list is feeded.
		if (_items != null)
		{
			transferItemsToOwner();

			List<L2Object> items = new FastList<L2Object>(_items);
			_items.clear();

			L2World.getInstance().removeObjects(items);
		}
	}

	/**
	 * Transfer pet's inventory to owner's inventory. Doesn't check used slots / maximum weight. Method used at unsummon / logout.
	 */
	public void transferItemsToOwner()
	{
		// Retrieves the master of the pet owning the inventory.
		final L2PcInstance petOwner = getOwner().getOwner();
		if (petOwner == null)
			return;

		// Transfer each item to master's inventory.
		for (L2ItemInstance item : _items)
		{
			if (item != null)
				getOwner().transferItem("return", item.getObjectId(), item.getCount(), petOwner.getInventory(), petOwner, getOwner());
		}
	}
}