Uebung-TDD-mit-Abhaengigkeiten/src/main/java/de/edu/hsfulda/ccip/tdd/withdependencies/GameOfLifeCell.java

package de.edu.hsfulda.ccip.tdd.withdependencies;

import java.util.Collection;
import java.util.LinkedList;
import java.util.stream.Collectors;

public class GameOfLifeCell {

	private GameOfLifeStatus status;
	private final Collection<GameOfLifeCell> neighborStates = new LinkedList<>();
	private GameOfLifeStatus nexState;
	private GameOfLifeStateChangeListener stateChangeListener;

	public GameOfLifeCell(//
			GameOfLifeStatus status, //
			GameOfLifeStateChangeListener stateChangeListener) {
		this.status = status;
		this.stateChangeListener = stateChangeListener;
	}

	public void addNeighbor(GameOfLifeCell neighbor) {
		neighborStates.add(neighbor);
	}

	public void caclulateNextState() {
		nexState = status
				.calculateNextBy(neighborStates.stream().map(GameOfLifeCell::getState).collect(Collectors.toList()));
		if (!nexState.equals(status))
			stateChangeListener.stateChangedIn(this);
	}

	public GameOfLifeStatus getState() {
		return status;
	}

	public void updateState() {
		status = nexState;
	}

}