package algorithm.binary;

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

import api.AlgorithmFrameworkFlex;
import api.AlgorithmFrameworkFlex.Individual;
import utility.StringFormat;

public class GreedySinglePass extends AlgorithmFrameworkFlex{

	private int problemSize = 0;
	private boolean moreInformation = true;
	@Override
	protected Individual executeAlgo() {
		Individual best = new Individual();
		best.position = extractPositionAndAccess();
		println("Bit-Array_length: " + best.position.size());
		best.fitness = evaluatePosition(best.position);
		List<Double> runList = new ArrayList<Double>();
		runList.add(best.fitness);
		println("Start with: " + StringFormat.doubleFixedPlaces(2, best.fitness));
		problemSize = best.position.size();
		
		
		Individual bestFound = new Individual(best);
		bestFound.fitness = Float.MAX_VALUE;
		Individual start = new Individual(best);
		for(int index = 0; index < problemSize; index++)
		{
			boolean actualValue = start.position.get(index);
			start.position.set(index, !actualValue);
			double fitness = evaluatePosition(start.position);
			if(fitness < bestFound.fitness) {
				bestFound = new Individual(start);	
				bestFound.fitness = fitness;
			}
			if(bestFound.fitness < best.fitness) {
				best = bestFound;
			}
			
			
			if(cancel) return null;
			println("Fitness: " + fitness + "FlippedIndex = " + index + "(" + problemSize + ")");
		}
		
		
		return best;
	}

	
	
	protected void println(String value) {
		if(moreInformation)console.println(value);
	}
	
	@Override
	protected int getProgressBarMaxCount() {
		return (problemSize * (problemSize + 1)) / 2;
	}

	@Override
	protected String algoInformationToPrint() {
		return "NoParameter";
	}

	@Override
	protected String plottFileName() {
		return "plottGreedy.txt";
	}
}