package com.planet_ink.coffee_mud.Abilities.Ranger;
import com.planet_ink.coffee_mud.Abilities.StdAbility;
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.TrackingLibrary;
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 2001-2020 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 Ranger_Track extends StdAbility
{
	@Override
	public String ID()
	{
		return "Ranger_Track";
	}

	private final static String	localizedName	= CMLib.lang().L("Track");

	@Override
	public String name()
	{
		return localizedName;
	}

	protected String	displayText	= L("(Tracking)");

	@Override
	public String displayText()
	{
		return displayText;
	}

	@Override
	protected int canAffectCode()
	{
		return CAN_MOBS;
	}

	@Override
	protected int canTargetCode()
	{
		return CAN_MOBS;
	}

	@Override
	public int abstractQuality()
	{
		return Ability.QUALITY_OK_OTHERS;
	}

	private static final String[]	triggerStrings	= I(new String[] { "TRACK" });

	@Override
	public String[] triggerStrings()
	{
		return triggerStrings;
	}

	@Override
	public int classificationCode()
	{
		return Ability.ACODE_SKILL | Ability.DOMAIN_COMBATLORE;
	}

	@Override
	public long flags()
	{
		return Ability.FLAG_TRACKING;
	}

	@Override
	public int usageType()
	{
		return USAGE_MOVEMENT;
	}

	protected List<Room>	theTrail		= null;
	public int				nextDirection	= -2;

	@Override
	public boolean tick(final Tickable ticking, final int tickID)
	{
		if(!super.tick(ticking,tickID))
			return false;
		if(tickID==Tickable.TICKID_MOB)
		{
			if(nextDirection==-999)
				return true;

			if((theTrail==null)
			||(affected == null)
			||(!(affected instanceof MOB)))
				return false;

			final MOB mob=(MOB)affected;

			if(nextDirection==999)
			{
				mob.tell(L("The trail seems to pause here."));
				nextDirection=-2;
				unInvoke();
			}
			else
			if(nextDirection==-1)
			{
				mob.tell(L("The trail dries up here."));
				nextDirection=-999;
				unInvoke();
			}
			else
			if(nextDirection>=0)
			{
				mob.tell(L("The trail seems to continue @x1.",CMLib.directions().getDirectionName(nextDirection)));
				if(mob.isMonster())
				{
					final Room nextRoom=mob.location().getRoomInDir(nextDirection);
					if((nextRoom!=null)&&(nextRoom.getArea()==mob.location().getArea()))
					{
						final int dir=nextDirection;
						nextDirection=-2;
						CMLib.tracking().walk(mob,dir,false,false);
					}
					else
						unInvoke();
				}
				else
					nextDirection=-2;
			}

		}
		return true;
	}

	@Override
	public void affectPhyStats(final Physical affectedEnv, final PhyStats affectableStats)
	{
		affectableStats.setSensesMask(affectableStats.sensesMask()|PhyStats.CAN_NOT_TRACK);
		super.affectPhyStats(affectedEnv, affectableStats);
	}

	@Override
	public void executeMsg(final Environmental myHost, final CMMsg msg)
	{
		super.executeMsg(myHost,msg);

		if(!(affected instanceof MOB))
			return;

		final MOB mob=(MOB)affected;
		if((msg.amISource(mob))
		&&(msg.amITarget(mob.location()))
		&&(CMLib.flags().canBeSeenBy(mob.location(),mob))
		&&(msg.targetMinor()==CMMsg.TYP_LOOK))
			nextDirection=CMLib.tracking().trackNextDirectionFromHere(theTrail,mob.location(),true);
	}

	@Override
	public boolean invoke(final MOB mob, final List<String> commands, final Physical givenTarget, final boolean auto, final int asLevel)
	{
		if(!CMLib.flags().isAliveAwakeMobile(mob,false))
			return false;

		if(!CMLib.flags().canBeSeenBy(mob.location(),mob))
		{
			mob.tell(L("You can't see anything to track!"));
			return false;
		}

		final List<Ability> V=CMLib.flags().flaggedAffects(mob,Ability.FLAG_TRACKING);
		for(final Ability A : V) A.unInvoke();
		if(V.size()>0)
		{
			mob.tell(L("You stop tracking."));
			if((commands.size()==0)||(CMParms.combine(commands,0).equalsIgnoreCase("stop")))
				return true;
		}

		theTrail=null;
		nextDirection=-2;

		if(!super.invoke(mob,commands,givenTarget,auto,asLevel))
			return false;

		final String mobName=CMParms.combine(commands,0);
		if(mobName.length()==0)
		{
			mob.tell(L("Track whom?"));
			return false;
		}

		if(mob.location().fetchInhabitant(mobName)!=null)
		{
			mob.tell(L("Try 'look'."));
			return false;
		}

		final boolean success=proficiencyCheck(mob,0,auto);

		TrackingLibrary.TrackingFlags flags;
		flags=CMLib.tracking().newFlags()
			.plus(TrackingLibrary.TrackingFlag.OPENONLY)
			.plus(TrackingLibrary.TrackingFlag.NOEMPTYGRIDS)
			.plus(TrackingLibrary.TrackingFlag.NOAIR)
			.plus(TrackingLibrary.TrackingFlag.NOWATER);
		final ArrayList<Room> rooms=new ArrayList<Room>();
		final int range=50 + (2*super.getXLEVELLevel(mob))+(10*super.getXMAXRANGELevel(mob));
		final List<Room> checkSet=CMLib.tracking().getRadiantRooms(mob.location(),flags,range);
		for (final Room room : checkSet)
		{
			final Room R=CMLib.map().getRoom(room);
			final MOB M=R.fetchInhabitant(mobName);
			if((M!=null)
			&&(CMLib.flags().canAccess(mob, R))
			&&(CMLib.flags().isSeeable(M)))
				rooms.add(R);
		}

		if(rooms.size()>0)
			theTrail=CMLib.tracking().findTrailToAnyRoom(mob.location(),rooms,flags,range);

		MOB target=null;
		if((theTrail!=null)&&(theTrail.size()>0))
			target=theTrail.get(0).fetchInhabitant(mobName);

		if((success)&&(theTrail!=null)&&(target!=null))
		{
			theTrail.add(mob.location());

			final CMMsg msg=CMClass.getMsg(mob,target,this,CMMsg.MSG_QUIETMOVEMENT,mob.isMonster()?null:L("<S-NAME> begin(s) to track <T-NAMESELF>."),null,mob.isMonster()?null:L("<S-NAME> begin(s) to track <T-NAMESELF>."));
			if((mob.location().okMessage(mob,msg))&&(target.okMessage(target,msg)))
			{
				mob.location().send(mob,msg);
				target.executeMsg(target,msg);
				invoker=mob;
				displayText=L("(Tracking @x1)",target.name(mob));
				final Ranger_Track newOne=(Ranger_Track)this.copyOf();
				if(mob.fetchEffect(newOne.ID())==null)
					mob.addEffect(newOne);
				mob.recoverPhyStats();
				newOne.nextDirection=CMLib.tracking().trackNextDirectionFromHere(theTrail,mob.location(),true);
			}
		}
		else
			return beneficialVisualFizzle(mob,null,L("<S-NAME> attempt(s) to track @x1, but can't find the trail.",mobName));
		// return whether it worked
		return success;
	}
}
