/*
 * 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 com.l2jserver.gameserver.model.itemcontainer;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.List;
import java.util.logging.Level;

import com.l2jserver.Config;
import com.l2jserver.L2DatabaseFactory;
import com.l2jserver.gameserver.model.L2ItemInstance;
import com.l2jserver.gameserver.model.L2Object;
import com.l2jserver.gameserver.model.TradeList;
import com.l2jserver.gameserver.model.L2ItemInstance.ItemLocation;
import com.l2jserver.gameserver.model.TradeList.TradeItem;
import com.l2jserver.gameserver.model.actor.instance.L2PcInstance;
import com.l2jserver.gameserver.network.serverpackets.InventoryUpdate;
import com.l2jserver.gameserver.network.serverpackets.ItemList;
import com.l2jserver.gameserver.network.serverpackets.StatusUpdate;
import com.l2jserver.gameserver.templates.item.L2EtcItemType;

import javolution.util.FastList;

public class PcInventory extends Inventory
{
    public static final int ADENA_ID = 57;
    public static final int ANCIENT_ADENA_ID = 5575;
    public static final long MAX_ADENA = 99900000000L;

	private final L2PcInstance _owner;
	private L2ItemInstance _adena;
	private L2ItemInstance _ancientAdena;

	public PcInventory(L2PcInstance owner)
	{
		_owner = owner;
	}

	@Override
	public L2PcInstance getOwner() { return _owner; }
	@Override
	protected ItemLocation getBaseLocation() { return ItemLocation.INVENTORY; }
	@Override
	protected ItemLocation getEquipLocation() { return ItemLocation.PAPERDOLL; }

	public L2ItemInstance getAdenaInstance() {return _adena;}
	@Override
	public long getAdena() {return _adena != null ? _adena.getCount() : 0;}

	public L2ItemInstance getAncientAdenaInstance()
	{
		return _ancientAdena;
	}

	public long getAncientAdena()
	{
		return (_ancientAdena != null) ? _ancientAdena.getCount() : 0;
	}

	/**
	 * Returns the list of items in inventory available for transaction
	 * @return L2ItemInstance : items in inventory
	 */
	public L2ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena)
	{
		return getUniqueItems(allowAdena, allowAncientAdena, true);
	}

	public L2ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if ((!allowAdena && item.getItemId() == 57))
				continue;
			if ((!allowAncientAdena && item.getItemId() == 5575))
				continue;

			boolean isDuplicate = false;
			for (L2ItemInstance litem : list)
			{
				if (item == null)
					continue;

				if (litem.getItemId() == item.getItemId())
				{
					isDuplicate = true;
					break;
				}
			}
			if (!isDuplicate && (!onlyAvailable || (item.isSellable() && item.isAvailable(getOwner(), false, false)))) list.add(item);
		}

		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);
		
		return result;
	}

	/**
	 * Returns the list of items in inventory available for transaction
	 * Allows an item to appear twice if and only if there is a difference in enchantment level.
	 * @return L2ItemInstance : items in inventory
	 */
	public L2ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena)
	{
		return getUniqueItemsByEnchantLevel(allowAdena, allowAncientAdena, true);
	}

	public L2ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item == null)
				continue;
			if ((!allowAdena && item.getItemId() == 57))
				continue;
			if ((!allowAncientAdena && item.getItemId() == 5575))
				continue;

			boolean isDuplicate = false;
			for (L2ItemInstance litem : list)
			{
				if ((litem.getItemId() == item.getItemId()) && (litem.getEnchantLevel() == item.getEnchantLevel()))
				{
					isDuplicate = true;
					break;
				}
			}
			if (!isDuplicate && (!onlyAvailable || (item.isSellable() && item.isAvailable(getOwner(), false, false))))
				list.add(item);
		}
		
		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);

		return result;
	}

	/**
	 * @see com.l2jserver.gameserver.model.itemcontainer.PcInventory#getAllItemsByItemId(int, boolean)
	 */
	public L2ItemInstance[] getAllItemsByItemId(int itemId)
	{
		return getAllItemsByItemId(itemId, true);
	}
	
	/**
	 * Returns the list of all items in inventory that have a given item id.
	 * @param itemId : ID of item
	 * @param includeEquipped : include equipped items
	 * @return L2ItemInstance[] : matching items from inventory
	 */
	public L2ItemInstance[] getAllItemsByItemId(int itemId, boolean includeEquipped)
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item == null)
				continue;

			if (item.getItemId() == itemId && (includeEquipped || !item.isEquipped()))
				list.add(item);
		}

		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);
		
		return result;
	}

	/**
	 * @see com.l2jserver.gameserver.model.itemcontainer.PcInventory#getAllItemsByItemId(int, int, boolean)
	 */
	public L2ItemInstance[] getAllItemsByItemId(int itemId, int enchantment)
	{
		return getAllItemsByItemId(itemId, enchantment, true);
	}
	
	/**
	 * Returns the list of all items in inventory that have a given item id AND a given enchantment level.
	 * @param itemId : ID of item
	 * @param enchantment : enchant level of item
	 * @param includeEquipped : include equipped items
	 * @return L2ItemInstance[] : matching items from inventory
	 */
	public L2ItemInstance[] getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item == null)
				continue;

			if ((item.getItemId() == itemId) && (item.getEnchantLevel() == enchantment) && (includeEquipped || !item.isEquipped()))
				list.add(item);
		}
		
		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);

		return result;
	}

	/**
	 * Returns the list of items in inventory available for transaction
	 * @return L2ItemInstance : items in inventory
	 */
	public L2ItemInstance[] getAvailableItems(boolean allowAdena, boolean allowNonTradeable)
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item != null && item.isAvailable(getOwner(), allowAdena, allowNonTradeable)) 
				list.add(item);
		}
		
		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);

		return result;
	}

	/**
	 * Get all augmented items
	 * @return
	 */
	public L2ItemInstance[] getAugmentedItems()
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item != null && item.isAugmented()) 
				list.add(item);
		}

		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);

		return result;
	}
	
	/** 
	 * Get all element items 
	 * @return 
	 */ 
	public L2ItemInstance[] getElementItems() 
	{
		FastList<L2ItemInstance> list = FastList.newInstance();
		for (L2ItemInstance item : _items) 
		{
			if (item != null && item.getElementals() != null) 
				list.add(item); 
		}
		
		L2ItemInstance[] result = list.toArray(new L2ItemInstance[list.size()]);
		FastList.recycle(list);

		return result;
	} 

	/**
	 * Returns the list of items in inventory available for transaction adjusted by tradeList
	 * @return L2ItemInstance : items in inventory
	 */
	public TradeList.TradeItem[] getAvailableItems(TradeList tradeList)
	{
		FastList<TradeList.TradeItem> list = FastList.newInstance();
		for (L2ItemInstance item : _items)
		{
			if (item != null && item.isAvailable(getOwner(), false, false))
			{
				TradeList.TradeItem adjItem = tradeList.adjustAvailableItem(item);
				if (adjItem != null) 
					list.add(adjItem);
			}
		}
		
		TradeList.TradeItem[] result = list.toArray(new TradeList.TradeItem[list.size()]);
		FastList.recycle(list);
		
		return result;
	}

	/**
	 * Adjust TradeItem according his status in inventory
	 * @param item : L2ItemInstance to be adjusten
	 * @return TradeItem representing adjusted item
	 */
	public void adjustAvailableItem(TradeItem item)
	{
		boolean notAllEquipped = false;
		for(L2ItemInstance adjItem: getItemsByItemId(item.getItem().getItemId()))
		{
			if(adjItem.isEquipable())
			{
				if(!adjItem.isEquipped())
					notAllEquipped |= true;
			}else{
				notAllEquipped |= true;
				break;
			}
		}
		if(notAllEquipped)
		{
			L2ItemInstance adjItem = getItemByItemId(item.getItem().getItemId());
			item.setObjectId(adjItem.getObjectId());
			item.setEnchant(adjItem.getEnchantLevel());
			
			if (adjItem.getCount() < item.getCount()) 
				item.setCount(adjItem.getCount());
			
			return;
		}

		item.setCount(0);
	}

    /**
     * Adds adena to PCInventory
	 * @param process : String Identifier of process triggering this action
     * @param count : int Quantity of adena to be added
	 * @param actor : L2PcInstance Player requesting the item add
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     */
    public void addAdena(String process, long count, L2PcInstance actor, L2Object reference)
    {
    	if (count > 0)
    		addItem(process, ADENA_ID, count, actor, reference);
    }

    /**
     * Removes adena to PCInventory
	 * @param process : String Identifier of process triggering this action
     * @param count : int Quantity of adena to be removed
	 * @param actor : L2PcInstance Player requesting the item add
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
	 * @return boolean : true if adena was reduced
     */
	public boolean reduceAdena(String process, long count, L2PcInstance actor, L2Object reference)
	{
    	if (count > 0)
    		return destroyItemByItemId(process, ADENA_ID, count, actor, reference) != null;
    	return false;
	}

	/**
     * Adds specified amount of ancient adena to player inventory.
	 * @param process : String Identifier of process triggering this action
     * @param count : int Quantity of adena to be added
	 * @param actor : L2PcInstance Player requesting the item add
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     */
    public void addAncientAdena(String process, long count, L2PcInstance actor, L2Object reference)
    {
    	if (count > 0)
    		addItem(process, ANCIENT_ADENA_ID, count, actor, reference);
    }

    /**
     * Removes specified amount of ancient adena from player inventory.
	 * @param process : String Identifier of process triggering this action
     * @param count : int Quantity of adena to be removed
	 * @param actor : L2PcInstance Player requesting the item add
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return boolean : true if adena was reduced
     */
	public boolean reduceAncientAdena(String process, long count, L2PcInstance actor, L2Object reference)
	{
    	if (count > 0)
    		return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
    	return false;
	}

    /**
     * Adds item in inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param item : L2ItemInstance to be added
	 * @param actor : L2PcInstance Player requesting the item add
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the new item or the updated item in inventory
     */
    @Override
	public L2ItemInstance addItem(String process, L2ItemInstance item, L2PcInstance actor, L2Object reference)
    {
        item = super.addItem(process, item, actor, reference);

        if (item != null && item.getItemId() == ADENA_ID && !item.equals(_adena))
    		_adena = item;

    	if (item != null && item.getItemId() == ANCIENT_ADENA_ID && !item.equals(_ancientAdena))
    		_ancientAdena = item;

    	return item;
    }

    /**
     * Adds item in inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param itemId : int Item Identifier of the item to be added
     * @param count : int Quantity of items to be added
	 * @param actor : L2PcInstance Player requesting the item creation
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the new item or the updated item in inventory
     */
    @Override
	public L2ItemInstance addItem(String process, int itemId, long count, L2PcInstance actor, L2Object reference)
    {
        L2ItemInstance item = super.addItem(process, itemId, count, actor, reference);

    	if (item != null && item.getItemId() == ADENA_ID && !item.equals(_adena))
    		_adena = item;

    	if (item != null && item.getItemId() == ANCIENT_ADENA_ID && !item.equals(_ancientAdena))
    		_ancientAdena = item;
    	if (item != null && actor != null)
    	{
			// Send inventory update packet
			if (!Config.FORCE_INVENTORY_UPDATE)
			{
				InventoryUpdate playerIU = new InventoryUpdate();
				playerIU.addItem(item);
				actor.sendPacket(playerIU);
			}
			else
				actor.sendPacket(new ItemList(actor, false));

			// Update current load as well
			StatusUpdate su = new StatusUpdate(actor);
			su.addAttribute(StatusUpdate.CUR_LOAD, actor.getCurrentLoad());
			actor.sendPacket(su);
    	}

    	return item;
    }

    /**
     * Transfers item to another inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param itemId : int Item Identifier of the item to be transfered
     * @param count : int Quantity of items to be transfered
	 * @param actor : L2PcInstance Player requesting the item transfer
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the new item or the updated item in inventory
     */
    @Override
	public L2ItemInstance transferItem(String process, int objectId, long count, ItemContainer target, L2PcInstance actor, L2Object reference)
    {
        L2ItemInstance item = super.transferItem(process, objectId, count, target, actor, reference);

        if (_adena != null && (_adena.getCount() <= 0 || _adena.getOwnerId() != getOwnerId()))
        	_adena = null;

        if (_ancientAdena != null && (_ancientAdena.getCount() <= 0 || _ancientAdena.getOwnerId() != getOwnerId()))
        	_ancientAdena = null;

        return item;
    }

	/**
	 * Destroy item from inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param item : L2ItemInstance to be destroyed
	 * @param actor : L2PcInstance Player requesting the item destroy
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
	 */
	@Override
	public L2ItemInstance destroyItem(String process, L2ItemInstance item, L2PcInstance actor, L2Object reference)
	{
        return this.destroyItem(process, item, item.getCount(), actor, reference);
	}
    
    /**
     * Destroy item from inventory and checks _adena and _ancientAdena
     * @param process : String Identifier of process triggering this action
     * @param item : L2ItemInstance to be destroyed
     * @param actor : L2PcInstance Player requesting the item destroy
     * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
     */
    @Override
    public L2ItemInstance destroyItem(String process, L2ItemInstance item, long count, L2PcInstance actor, L2Object reference)
    {
        item = super.destroyItem(process, item, count, actor, reference);

        if (_adena != null && _adena.getCount() <= 0)
            _adena = null;

        if (_ancientAdena != null && _ancientAdena.getCount() <= 0)
            _ancientAdena = null;

        return item;
    }

	/**
	 * Destroys item from inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param objectId : int Item Instance identifier of the item to be destroyed
     * @param count : int Quantity of items to be destroyed
	 * @param actor : L2PcInstance Player requesting the item destroy
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
	 */
	@Override
	public L2ItemInstance destroyItem(String process, int objectId, long count, L2PcInstance actor, L2Object reference)
    {
        L2ItemInstance item = getItemByObjectId(objectId);
        if (item == null) 
        {
            return null;
        }
        return this.destroyItem(process, item, count, actor, reference);
    }

	/**
	 * Destroy item from inventory by using its <B>itemId</B> and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param itemId : int Item identifier of the item to be destroyed
     * @param count : int Quantity of items to be destroyed
	 * @param actor : L2PcInstance Player requesting the item destroy
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
	 */
	@Override
	public L2ItemInstance destroyItemByItemId(String process, int itemId, long count, L2PcInstance actor, L2Object reference)
	{
        L2ItemInstance item = getItemByItemId(itemId);
        if (item == null) 
        {
            return null;
        }
        return this.destroyItem(process, item, count, actor, reference);
	}

	/**
	 * Drop item from inventory and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param item : L2ItemInstance to be dropped
	 * @param actor : L2PcInstance Player requesting the item drop
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
	 */
	@Override
	public L2ItemInstance dropItem(String process, L2ItemInstance item, L2PcInstance actor, L2Object reference)
	{
        item = super.dropItem(process, item, actor, reference);

        if (_adena != null && (_adena.getCount() <= 0 || _adena.getOwnerId() != getOwnerId()))
        	_adena = null;

        if (_ancientAdena != null && (_ancientAdena.getCount() <= 0 || _ancientAdena.getOwnerId() != getOwnerId()))
        	_ancientAdena = null;

        return item;
	}

	/**
	 * Drop item from inventory by using its <B>objectID</B> and checks _adena and _ancientAdena
	 * @param process : String Identifier of process triggering this action
     * @param objectId : int Item Instance identifier of the item to be dropped
     * @param count : int Quantity of items to be dropped
	 * @param actor : L2PcInstance Player requesting the item drop
	 * @param reference : L2Object Object referencing current action like NPC selling item or previous item in transformation
     * @return L2ItemInstance corresponding to the destroyed item or the updated item in inventory
	 */
	@Override
	public L2ItemInstance dropItem(String process, int objectId, long count, L2PcInstance actor, L2Object reference)
	{
        L2ItemInstance item = super.dropItem(process, objectId, count, actor, reference);

        if (_adena != null && (_adena.getCount() <= 0 || _adena.getOwnerId() != getOwnerId()))
        	_adena = null;

        if (_ancientAdena != null && (_ancientAdena.getCount() <= 0 || _ancientAdena.getOwnerId() != getOwnerId()))
        	_ancientAdena = null;

        return item;
    }

	/**
     * <b>Overloaded</b>, when removes item from inventory, remove also owner shortcuts.
     * @param item : L2ItemInstance to be removed from inventory
     */
    @Override
	protected boolean removeItem(L2ItemInstance item)
    {
        // Removes any reference to the item from Shortcut bar
    	getOwner().removeItemFromShortCut(item.getObjectId());

    	// Removes active Enchant Scroll
        if(item.equals(getOwner().getActiveEnchantItem()))
        	getOwner().setActiveEnchantItem(null);

        if (item.getItemId() == ADENA_ID)
        	_adena = null;
        else if (item.getItemId() == ANCIENT_ADENA_ID)
        	_ancientAdena = null;

        return super.removeItem(item);
    }

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

	/**
	 * Get back items in inventory from database
	 */
    @Override
	public void restore()
    {
    	super.restore();
    	_adena = getItemByItemId(ADENA_ID);
    	_ancientAdena = getItemByItemId(ANCIENT_ADENA_ID);
    }

	public static int[][] restoreVisibleInventory(int objectId)
    {
    	int[][] paperdoll = new int[31][3];
        Connection con = null;

        try
        {
            con = L2DatabaseFactory.getInstance().getConnection();
            PreparedStatement statement2 = con.prepareStatement(
					"SELECT object_id,item_id,loc_data,enchant_level FROM items WHERE owner_id=? AND loc='PAPERDOLL'");
            statement2.setInt(1, objectId);
            ResultSet invdata = statement2.executeQuery();

            while (invdata.next())
            {
            	int slot = invdata.getInt("loc_data");
            	paperdoll[slot][0] = invdata.getInt("object_id");
            	paperdoll[slot][1] = invdata.getInt("item_id");
				paperdoll[slot][2] = invdata.getInt("enchant_level");
                if (slot == Inventory.PAPERDOLL_LRHAND)
                {
                    paperdoll[Inventory.PAPERDOLL_RHAND][0] = invdata.getInt("object_id");
                    paperdoll[Inventory.PAPERDOLL_RHAND][1] = invdata.getInt("item_id");
                    paperdoll[Inventory.PAPERDOLL_RHAND][2] = invdata.getInt("enchant_level");
                }
            }

            invdata.close();
            statement2.close();
        }
        catch (Exception e)
        {
			_log.log(Level.WARNING, "Could not restore inventory: " + e.getMessage(), e);
        }
        finally
        {
            L2DatabaseFactory.close(con);
        }
        return paperdoll;
    }


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

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

        return validateCapacity(slots);
    }

    public boolean validateCapacity(List<L2ItemInstance> items)
    {
    	int slots = 0;

    	for (L2ItemInstance item : items)
    		if (!(item.isStackable() && getItemByItemId(item.getItemId()) != null))
                slots++;

    	return validateCapacity(slots);
    }

    public boolean validateCapacityByItemId(int ItemId)
    {
    	int slots = 0;

    	L2ItemInstance invItem = getItemByItemId(ItemId);
    	if (!(invItem != null && invItem.isStackable()))
    		slots++;

    	return validateCapacity(slots);
    }

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

	@Override
	public boolean validateWeight(int weight)
	{
		if (_owner.isGM() && _owner.getAccessLevel().allowTransaction())
			return true; // disable weight check for GM
		return (_totalWeight + weight <= _owner.getMaxLoad());
	}
}