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package be.unamur.transitionsystem.test;

/*
 * #%L
 * vibes-core
 * %%
 * Copyright (C) 2014 PReCISE, University of Namur
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */

import java.util.ArrayList;

import com.google.common.collect.HashMultiset;

import be.unamur.transitionsystem.Action;
import be.unamur.transitionsystem.State;
import be.unamur.transitionsystem.Transition;
import be.unamur.transitionsystem.test.exception.TestCaseException;
import be.unamur.transitionsystem.usagemodel.UsageModelTransition;

public class UsageModelMutableTestCase extends MutableTestCase implements UsageModelTestCase{
	
	public static final TestCaseFactory FACTORY = new TestCaseFactory() {
		@Override
		public TestCase buildTestCase() {
			return new UsageModelMutableTestCase();
		}
	};
	
	private ArrayList probabilities;
	
	public UsageModelMutableTestCase() {
		super();
		this.probabilities = new ArrayList();
	}
	
	@Override
	public UsageModelMutableTestCase copy()
			throws TestCaseException {
		UsageModelMutableTestCase tc = new UsageModelMutableTestCase();
		tc.actions = new ArrayList(actions);
		tc.actionSet = HashMultiset.create(actionSet);
		tc.probabilities = new ArrayList(probabilities);
		return tc;
	}
	
	@Override
	public UsageModelMutableTestCase enqueue(Action action)
			throws TestCaseException {
		this.probabilities.add(1.0);
		super.enqueue(action);
		return this;
	}
	
	public UsageModelMutableTestCase enqueue(Action action, double proba)
			throws TestCaseException {
		this.probabilities.add(proba);
		super.enqueue(action);
		return this;
	}
	
	@Override
	public UsageModelMutableTestCase enqueue(Transition trans)
			throws TestCaseException {
		if(trans instanceof UsageModelTransition){
			this.probabilities.add(((UsageModelTransition) trans).getProbability());
		} else {
			this.probabilities.add(1.0);
		}
		super.enqueue(trans);
		return this;
	}
	
	@Override
	public MutableTestCase dequeue()
			throws TestCaseException {
		this.probabilities.remove(this.probabilities.size() - 1);
		return super.dequeue();
	}

	@Override
	public double getProbability() {
		double proba = 1.0;
		for(Double val : this.probabilities){
			proba = proba * val;
		}
		return proba;
	}
	
	@Override
	public String toString() {
		return "UsageModelMutableAbstractTestCase [probability=" + getProbability()
				+ ", toString()=" + super.toString() + "]";
	}
	
}