import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.logging.LogManager;

import node.Node;
import analysis.NetworkDumper;

public class RandomGenerator2 {

	public static double BIRTH_RATE = 0.50;
	private static int START_NODES = 100;

    public static List<Node> nodes = new ArrayList<Node>();
    public static Random gen = new Random();

    private int maxNodes = 0;
    private int numSpawned = 0;
    private int numKilled = 0;

    private Node firstNode;

    public RandomGenerator2() {
        firstNode = new Node();
        nodes.add(firstNode);
        new NetworkDumper(firstNode);
        
		for (int i = 0; i < START_NODES; i++) {
			nodes.add(new Node());
		}

		while (true) {

            if (gen.nextDouble() > 1 - BIRTH_RATE) {
                spawn();
            } else {
                kill();
            }

            try {
				Thread.sleep(5000);
            } catch (InterruptedException e) {
            }
        }

		// System.out.println("Executed " + ROUNDS
		// + " rounds (with a spawn rate of " + BIRTH_RATE + "). "
		// + numSpawned + " nodes were spawned, " + numKilled
		// + " nodes were killed. Currently " + "there are "
		// + nodes.size() + " nodes remaining. At one point we had"
		// + " a maximum of " + maxNodes + " nodes.");
    }

    private void spawn() {
        try {
            if (nodes.isEmpty()) {
                nodes.add(new Node());
            } else {
                Node randomNode = getRandomNode();
                Node newNode = randomNode.spawn();
                nodes.add(newNode);
            }
            numSpawned++;
            if (maxNodes < nodes.size()) {
                maxNodes = nodes.size();
            }
        } catch (IOException e) {
        }
    }

    private void kill() {
        if (nodes.size() < 2)
            return;
        Node randomNode;
        while ((randomNode = getRandomNode()) == firstNode) {
            // Dont kill first node
        }
        nodes.remove(randomNode);
        randomNode.leave();
        numKilled++;
    }
    
    private Node getRandomNode() {
        return nodes.get(gen.nextInt(nodes.size()));
    }

    public static void main(String args[]) {
        System.setProperty("java.util.logging.config.file",
                "logging.properties");

        try {
            LogManager.getLogManager().readConfiguration();
        } catch (Exception e) {
            e.printStackTrace();
        }

        new RandomGenerator2();
    }

}