package middlewares;
import java.util.Vector;

/**
 * Counts the number of bases hit at least 1, 5, 10, 20 or 30 times.
 * 
 * @author Ali Abdallah
 * @version 22.07.2011
 * @since Java 1.6
 */
public class HitsCounter {

	/**
	 * The hits vector with the number of bases hit at different levels.
	 */
	private Vector<Integer> hits;
	
	/**
	 * The number of bases hit at the five different levels for a specific 
	 * target.
	 */
	private Vector<Integer> currentHits;
	
	/**
	 * The levels at which the number of bases is counted.
	 */
	private int[] levels = { 1, 5, 10, 20, 30 };

	/**
	 * Creates and initializes a hit counter.
	 */
	public HitsCounter() {
		hits = new Vector<Integer>();
		currentHits = new Vector<Integer>();
		for (int i = 0; i < levels.length; i++) {
			hits.add(0);
			currentHits.add(0);
		}
	}

	/**
	 * Update the number of bases hit at the specified different levels.
	 */
	public void updateHits() {
		for (int i = 0; i < hits.size(); i++) {
			hits.set(i, hits.get(i) + currentHits.get(i));
		}
	}

	/**
	 * Reset the number of bases hit at the specified different leverls for
	 * a specific target for user for the next target.
	 */
	public void resetCurrentHits() {
		currentHits = new Vector<Integer>();
		for (int i = 0; i < levels.length; i++) {
			currentHits.add(0);
		}
	}

	/**
	 * Increments the number of bases hit at some levels by one, if the number 
	 * of hits on this base reach or exceed this level.
	 * 
	 * @param hitsOnBase
	 */
	public void updateCurrentHits(int hitsOnBase) {
		for (int i = 0; i < currentHits.size(); i++) {
			if (hitsOnBase >= levels[i]) {
				currentHits.set(i, currentHits.get(i) + 1);
			}
		}
	}
	
	// Index of the bases level of the current target.
	int currHit = 0;

	/**
	 * @return the number of bases hit at the next higher level in the current
	 * target.
	 */
	public int getNextLevelCurrentHits() {
		if (currHit < currentHits.size())
			return currentHits.get(currHit++);
		else {
			currHit = 1;
			return currentHits.get(0);
		}
	}

	// Index of the bases level of the target.
	int hit = -1;

	/**
	 * @return the number of bases hit at the next higher level.
	 */
	public int getNextLevelHits() {
		if (++hit < hits.size()) {
			return hits.get(hit);
		} else {
			return (hit = -1);
		}
	}

}