package com.planet_ink.coffee_mud.Abilities.Properties;
import com.planet_ink.coffee_mud.core.interfaces.*;
import com.planet_ink.coffee_mud.core.*;
import com.planet_ink.coffee_mud.core.collections.*;
import com.planet_ink.coffee_mud.Abilities.interfaces.*;
import com.planet_ink.coffee_mud.Areas.interfaces.*;
import com.planet_ink.coffee_mud.Behaviors.interfaces.*;
import com.planet_ink.coffee_mud.CharClasses.interfaces.*;
import com.planet_ink.coffee_mud.Commands.interfaces.*;
import com.planet_ink.coffee_mud.Common.interfaces.*;
import com.planet_ink.coffee_mud.Exits.interfaces.*;
import com.planet_ink.coffee_mud.Items.interfaces.*;
import com.planet_ink.coffee_mud.Libraries.interfaces.*;
import com.planet_ink.coffee_mud.Locales.interfaces.*;
import com.planet_ink.coffee_mud.MOBS.interfaces.*;
import com.planet_ink.coffee_mud.Races.interfaces.*;

import java.util.*;

/*
   Copyright 2002-2022 Bo Zimmerman

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

	   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
public class Prop_ItemTransporter extends Property
{
	@Override
	public String ID()
	{
		return "Prop_ItemTransporter";
	}

	@Override
	public String name()
	{
		return "Item Transporter";
	}

	@Override
	protected int canAffectCode()
	{
		return Ability.CAN_MOBS|Ability.CAN_ITEMS|Ability.CAN_ROOMS;
	}

	protected Room roomDestination=null;
	protected MOB mobDestination=null;
	protected Container nextDestination=null;
	protected static Map<String,List<PhysicalAgent>> possiblePossibilities=new Hashtable<String,List<PhysicalAgent>>();
	protected static Map<String,Integer> lastLooks=new Hashtable<String,Integer>();

	@Override
	public String accountForYourself()
	{
		return "Item Transporter";
	}

	public Item ultimateParent(final Item item)
	{
		if(item==null)
			return null;
		if(item.container()==null)
			return item;
		if(item.container().container()==item)
			item.container().setContainer(null);
		if(item.container()==item)
			item.setContainer(null);
		return ultimateParent(item.container());
	}

	private synchronized boolean setDestination()
	{
		List<PhysicalAgent> possibilities=possiblePossibilities.get(text());
		Integer lastLook=lastLooks.get(text());
		if((possibilities==null)||(lastLook==null)||(lastLook.intValue()<0))
		{
			possibilities=new Vector<PhysicalAgent>(); // obviously vector is required here, for thread safety
			possiblePossibilities.put(text(),possibilities);
			lastLook=Integer.valueOf(10);
			lastLooks.put(text(),lastLook);
		}
		else
			lastLooks.put(text(),Integer.valueOf(lastLook.intValue()-1));
		if(possibilities.size()==0)
		{
			roomDestination=null;
			mobDestination=null;
			nextDestination=null;
			try
			{
				for(final Enumeration<Room> r=CMLib.map().rooms();r.hasMoreElements();)
				{
					final Room room=r.nextElement();
					Ability A=room.fetchEffect("Prop_ItemTransReceiver");
					if((A!=null)&&(A.text().equalsIgnoreCase(text())))
						possibilities.add(room);
					for(int i=0;i<room.numItems();i++)
					{
						final Item item=room.getItem(i);
						if((item!=null)&&(item!=affected))
						{
							A=item.fetchEffect("Prop_ItemTransReceiver");
							if((A!=null)&&(A.text().equalsIgnoreCase(text())))
								possibilities.add(item);
						}
					}
					for(int m=0;m<room.numInhabitants();m++)
					{
						final MOB mob=room.fetchInhabitant(m);
						if((mob!=null)&&(mob!=affected))
						{
							A=mob.fetchEffect("Prop_ItemTransReceiver");
							if((A!=null)&&(A.text().equalsIgnoreCase(text())))
								possibilities.add(mob);
							for(int i=0;i<mob.numItems();i++)
							{
								final Item item=mob.getItem(i);
								if((item!=null)&&(item!=affected))
								{
									A=item.fetchEffect("Prop_ItemTransReceiver");
									if((A!=null)&&(A.text().equalsIgnoreCase(text())))
										possibilities.add(item);
								}
							}
						}
					}
				}
			}
			catch(final NoSuchElementException e)
			{
			}
		}
		if(possibilities.size()>0)
		{
			final PhysicalAgent P=possibilities.get(CMLib.dice().roll(1,possibilities.size(),-1));
			nextDestination=null;
			if(P instanceof Room)
				roomDestination=(Room)P;
			else
			if(P instanceof MOB)
				mobDestination=(MOB)P;
			else
			if(P instanceof Container)
			{
				nextDestination=(Container)P;
				if((nextDestination!=null)&&(nextDestination.owner()!=null))
				{
					if(nextDestination.owner() instanceof Room)
						roomDestination=(Room)nextDestination.owner();
					else
					if(nextDestination.owner() instanceof MOB)
						mobDestination=(MOB)nextDestination.owner();
				}
				else
					nextDestination=null;
			}
			else
			if(P instanceof Item)
			{
				nextDestination=null;
				final Item I = (Item)P;
				if(I.owner()!=null)
				{
					if(I.owner() instanceof Room)
						roomDestination=(Room)I.owner();
					else
					if(I.owner() instanceof MOB)
						mobDestination=(MOB)I.owner();
				}
			}
		}
		if((mobDestination==null)&&(roomDestination==null))
			return false;
		return true;
	}

	@Override
	public boolean okMessage(final Environmental myHost, final CMMsg msg)
	{
		if(!super.okMessage(myHost,msg))
			return false;
		if(affected==null)
			return true;

		if(((msg.amITarget(affected))
			&&((msg.targetMinor()==CMMsg.TYP_PUT)
			   ||(msg.targetMinor()==CMMsg.TYP_GIVE))
			&&(msg.tool() instanceof Item))
		||((affected instanceof MOB)
			&&(msg.amISource((MOB)affected))
			&&((msg.targetMinor()==CMMsg.TYP_GET)||(msg.targetMinor()==CMMsg.TYP_PUSH)||(msg.targetMinor()==CMMsg.TYP_PULL))
			&&(msg.target() instanceof Item))
		||((affected instanceof Room)
			&&(msg.targetMinor()==CMMsg.TYP_DROP)
			&&(msg.target() instanceof Item))
		||((affected instanceof Room)
			&&(msg.sourceMinor()==CMMsg.TYP_THROW)
			&&(affected==CMLib.map().roomLocation(msg.target()))
			&&(msg.tool() instanceof Item)))
		{
			if(!setDestination())
			{
				msg.source().tell(L("The transporter has no possible ItemTransReceiver with the code '@x1'.",text()));
				return false;
			}
		}
		return true;
	}

	public synchronized void tryToMoveStuff()
	{
		if((mobDestination!=null)||(roomDestination!=null))
		{
			final Room room=roomDestination;
			final MOB mob=mobDestination;
			Room roomMover=null;
			MOB mobMover=null;
			Item container=null;
			if(affected==null)
				return;
			if(affected instanceof Room)
				roomMover=(Room)affected;
			else
			if(affected instanceof MOB)
				mobMover=(MOB)affected;
			else
			if(affected instanceof Item)
			{
				container=(Item)affected;
				if((container.owner()!=null)&&(container.owner() instanceof Room))
					roomMover=(Room)container.owner();
				else
				if((container.owner()!=null)&&(container.owner() instanceof MOB))
					mobMover=(MOB)container.owner();
			}
			final List<Item> itemsToMove=new ArrayList<Item>();
			if(roomMover!=null)
			{
				for(int i=0;i<roomMover.numItems();i++)
				{
					final Item item=roomMover.getItem(i);
					if((item!=null)
					   &&(item!=container)
					   &&(item.amWearingAt(Wearable.IN_INVENTORY))
					   &&((item.container()==container)||(ultimateParent(item)==container)))
					   itemsToMove.add(item);
				}
				for(int i=0;i<itemsToMove.size();i++)
					roomMover.delItem(itemsToMove.get(i));
			}
			else
			if(mobMover!=null)
			{
				final int oldNum=itemsToMove.size();
				for(int i=0;i<mobMover.numItems();i++)
				{
					final Item item=mobMover.getItem(i);
					if((item!=null)
					&&(item!=container)
					&&(item.amWearingAt(Wearable.IN_INVENTORY))
					&&((item.container()==container)||(ultimateParent(item)==container)))
						itemsToMove.add(item);
				}
				for(int i=oldNum;i<itemsToMove.size();i++)
					mobMover.delItem(itemsToMove.get(i));
			}
			if(itemsToMove.size()>0)
			{
				mobDestination=null;
				roomDestination=null;
				if(room!=null)
				{
					for(int i=0;i<itemsToMove.size();i++)
					{
						final Item item=itemsToMove.get(i);
						if((item.container()==null)||(item.container()==container))
							item.setContainer(nextDestination);
						room.addItem(item,ItemPossessor.Expire.Player_Drop);
					}
				}
				if(mob!=null)
				{
					for(int i=0;i<itemsToMove.size();i++)
					{
						final Item item=itemsToMove.get(i);
						if((item.container()==null)||(item.container()==container))
							item.setContainer(nextDestination);
						if(mob instanceof ShopKeeper)
							((ShopKeeper)mob).getShop().addStoreInventory(item);
						else
							mob.addItem(item);
					}
				}
				if(room!=null)
					room.recoverRoomStats();
				if(mob!=null)
				{
					mob.recoverCharStats();
					mob.recoverPhyStats();
					mob.recoverMaxState();
				}
			}
		}
	}

	@Override
	public boolean tick(final Tickable ticking, final int tickID)
	{
		if(tickID==Tickable.TICKID_MOB)
			tryToMoveStuff();
		return true;
	}

	@Override
	public void executeMsg(final Environmental myHost, final CMMsg msg)
	{
		// amazingly important that this happens first!
		super.executeMsg(myHost,msg);
		if((msg.targetMinor()==CMMsg.TYP_GET)
		||(msg.targetMinor()==CMMsg.TYP_GIVE)
		||(msg.targetMinor()==CMMsg.TYP_PUT)
		||(msg.targetMinor()==CMMsg.TYP_PUSH)
		||(msg.targetMinor()==CMMsg.TYP_PULL)
		||(msg.sourceMinor()==CMMsg.TYP_THROW)
		||(msg.targetMinor()==CMMsg.TYP_DROP))
			tryToMoveStuff();
	}
}
