/**
 * pcgen.core.term.PCCountEquipmentTermEvaluator.java
 * Copyright (c) 2008 Andrew Wilson <nuance@users.sourceforge.net>.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Created 07-Oct-2008 22:55:30
 *
 * Current Ver: $Revision:$
 *
 */

package pcgen.core.term;

import java.util.List;
import java.util.ArrayList;

import pcgen.core.PlayerCharacter;
import pcgen.core.Equipment;
import pcgen.core.EquipmentUtilities;

public class PCCountEquipmentTermEvaluator
		extends BasePCTermEvaluator implements TermEvaluator
{
	final String[] types;
	private final int merge;

	public PCCountEquipmentTermEvaluator(
			String expressionString, String[] types, int merge)
	{
		this.originalText = expressionString;
		this.types        = types;
		this.merge        = merge;
	}

	@Override
	public Float resolve(PlayerCharacter pc) {

		List<Equipment> aList = new ArrayList<>();
		final List<Equipment> equipList = pc.getEquipmentListInOutputOrder(merge);

		for ( Equipment eq : equipList )
		{
			aList.add(eq);
		}
		

		// This is new, it's to deal with the fact that the code uses an array
		// now instead of the deprecated StringTokeniser class.  We can have
		// an empty tokeniser, but not an empty array.  To get around this we
		// create an array of one item, the empty string. 
		int cur = 0;
		if ("".equalsIgnoreCase(types[cur]))
		{
			cur++;
		}
		
		while (cur < types.length)
		{
			final String curTok = types[cur];
			cur++;
			
			if ("NOT".equalsIgnoreCase(curTok))
			{
				aList = EquipmentUtilities.removeEqType(aList, types[cur]);
				cur++;
			}
			else if ("ADD".equalsIgnoreCase(curTok))
			{
				aList = pc.addEqType(aList,  types[cur]);
				cur++;
			}
			else if ("IS".equalsIgnoreCase(curTok))
			{
				aList = EquipmentUtilities.removeNotEqType(aList, types[cur]);
				cur++;
			}
			else if ("EQUIPPED".equalsIgnoreCase(curTok) || 
					 "NOTEQUIPPED".equalsIgnoreCase(curTok))
			{
				final boolean eFlag = "EQUIPPED".equalsIgnoreCase(curTok);

				for (int ix = aList.size() - 1; ix >= 0; --ix)
				{
					final Equipment anEquip = aList.get(ix);

					if (anEquip.isEquipped() != eFlag)
					{
						aList.remove(anEquip);
					}
				}
			}
		}

		return (float) aList.size();
	}

	@Override
	public boolean isSourceDependant()
	{
		return false;
	}

	public boolean isStatic()
	{
		return false;
	}
}