/*
 * Copyright (C) 2004-2013 L2J DataPack
 * 
 * This file is part of L2J DataPack.
 * 
 * L2J DataPack 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.
 * 
 * L2J DataPack 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 handlers.skillhandlers;

import com.l2jserver.gameserver.ai.CtrlIntention;
import com.l2jserver.gameserver.handler.ISkillHandler;
import com.l2jserver.gameserver.instancemanager.InstanceManager;
import com.l2jserver.gameserver.model.L2Object;
import com.l2jserver.gameserver.model.actor.L2Character;
import com.l2jserver.gameserver.model.actor.instance.L2ChestInstance;
import com.l2jserver.gameserver.model.actor.instance.L2DoorInstance;
import com.l2jserver.gameserver.model.entity.Instance;
import com.l2jserver.gameserver.model.skills.L2Skill;
import com.l2jserver.gameserver.model.skills.L2SkillType;
import com.l2jserver.gameserver.network.SystemMessageId;
import com.l2jserver.gameserver.network.serverpackets.ActionFailed;
import com.l2jserver.util.Rnd;

public class Unlock implements ISkillHandler
{
	private static final L2SkillType[] SKILL_IDS =
	{
		L2SkillType.UNLOCK,
		L2SkillType.UNLOCK_SPECIAL
	};
	
	@Override
	public void useSkill(L2Character activeChar, L2Skill skill, L2Object[] targets)
	{
		for (L2Object target : targets)
		{
			if (target.isDoor())
			{
				L2DoorInstance door = (L2DoorInstance) target;
				// Check if door in the different instance
				if (activeChar.getInstanceId() != door.getInstanceId())
				{
					// Search for the instance
					final Instance inst = InstanceManager.getInstance().getInstance(activeChar.getInstanceId());
					if (inst == null)
					{
						// Instance not found
						activeChar.sendPacket(ActionFailed.STATIC_PACKET);
						return;
					}
					final L2DoorInstance instanceDoor = inst.getDoor(door.getId());
					if (instanceDoor != null)
					{
						// Door found
						door = instanceDoor;
					}
					
					// Checking instance again
					if (activeChar.getInstanceId() != door.getInstanceId())
					{
						activeChar.sendPacket(ActionFailed.STATIC_PACKET);
						return;
					}
				}
				
				if ((!door.isOpenableBySkill() && (skill.getSkillType() != L2SkillType.UNLOCK_SPECIAL)) || (door.getFort() != null))
				{
					activeChar.sendPacket(SystemMessageId.UNABLE_TO_UNLOCK_DOOR);
					activeChar.sendPacket(ActionFailed.STATIC_PACKET);
					return;
				}
				
				if (doorUnlock(skill) && !door.getOpen())
				{
					door.openMe();
				}
				else
				{
					activeChar.sendPacket(SystemMessageId.FAILED_TO_UNLOCK_DOOR);
				}
			}
			else if (target instanceof L2ChestInstance)
			{
				L2ChestInstance chest = (L2ChestInstance) target;
				if ((chest.getCurrentHp() <= 0) || chest.isInteracted() || (activeChar.getInstanceId() != chest.getInstanceId()))
				{
					activeChar.sendPacket(ActionFailed.STATIC_PACKET);
					return;
				}
				
				chest.setInteracted();
				if (chestUnlock(skill, chest))
				{
					activeChar.broadcastSocialAction(3);
					chest.setSpecialDrop();
					chest.setMustRewardExpSp(false);
					chest.reduceCurrentHp(99999999, activeChar, skill);
				}
				else
				{
					activeChar.broadcastSocialAction(13);
					chest.addDamageHate(activeChar, 0, 1);
					chest.getAI().setIntention(CtrlIntention.AI_INTENTION_ATTACK, activeChar);
					if (chestTrap(chest))
					{
						chest.chestTrap(activeChar);
					}
				}
			}
		}
	}
	
	private static final boolean doorUnlock(L2Skill skill)
	{
		if (skill.getSkillType() == L2SkillType.UNLOCK_SPECIAL)
		{
			return Rnd.get(100) < skill.getPower();
		}
		
		switch (skill.getLevel())
		{
			case 0:
				return false;
			case 1:
				return Rnd.get(120) < 30;
			case 2:
				return Rnd.get(120) < 50;
			case 3:
				return Rnd.get(120) < 75;
			default:
				return Rnd.get(120) < 100;
		}
	}
	
	private static final boolean chestUnlock(L2Skill skill, L2Character chest)
	{
		int chance = 0;
		if (chest.getLevel() > 60)
		{
			if (skill.getLevel() < 10)
			{
				return false;
			}
			
			chance = ((skill.getLevel() - 10) * 5) + 30;
		}
		else if (chest.getLevel() > 40)
		{
			if (skill.getLevel() < 6)
			{
				return false;
			}
			
			chance = ((skill.getLevel() - 6) * 5) + 10;
		}
		else if (chest.getLevel() > 30)
		{
			if (skill.getLevel() < 3)
			{
				return false;
			}
			if (skill.getLevel() > 12)
			{
				return true;
			}
			
			chance = ((skill.getLevel() - 3) * 5) + 30;
		}
		else
		{
			if (skill.getLevel() > 10)
			{
				return true;
			}
			
			chance = (skill.getLevel() * 5) + 35;
		}
		
		chance = Math.min(chance, 50);
		return Rnd.get(100) < chance;
	}
	
	private static final boolean chestTrap(L2Character chest)
	{
		if (chest.getLevel() > 60)
		{
			return Rnd.get(100) < 80;
		}
		if (chest.getLevel() > 40)
		{
			return Rnd.get(100) < 50;
		}
		if (chest.getLevel() > 30)
		{
			return Rnd.get(100) < 30;
		}
		return Rnd.get(100) < 10;
	}
	
	@Override
	public L2SkillType[] getSkillIds()
	{
		return SKILL_IDS;
	}
}