package myVncProxy;

import java.net.Socket;
import java.io.*;
import java.net.*;
import java.util.*;

public class AcceptClient extends Thread {
	int counter = 0, parentnum = 0/* 落ちたときの親の番号をカウントするためのもの */;
	LinkedList<String> ls = new LinkedList<String>();
	boolean runflag = false;
	private String name;
	boolean addrRegistor = true;

	public AcceptClient(String _name) {
		name = _name;
	}

	public AcceptClient() {
		new CreateThread(this);
	}

	public synchronized void transferParentAddrerss(BufferedReader is,PrintStream os) {
		String line, port;
		int intv_time = 100;
		String request;
		int treebranch = 2;// treeの子ノードの数
		String leaderflag = "0", sendleaderflag = "0";

		// クライアントからのメッセージを待ち、受け取ったメッセージをそのまま返す
		try {
			while (true) {
				line = is.readLine();
				port = is.readLine();

				System.out.println("データーを受信しましたlin=" + line + "       port="
						+ port);
				// 自分の IPADRESSを取得する
				InetAddress addr = InetAddress.getLocalHost();
				String add = new String(addr.getHostAddress());

				if ("1".equals(line)) {
					System.out.println("親が落ちましたmessage" + port);
					String checkRepetition = is.readLine();
					os.println(ls.getLast());
					parentnum = (Integer.parseInt(port) - 1) / treebranch;
					String newparent = ls.get(parentnum);

					counter--;
					runflag = true;

					sendleaderflag = decisionLeader(Integer.parseInt(port),
							treebranch);

					Child report = new Child();

					report.reportLastNode(ls.getLast(), newparent, port,
							String.valueOf(parentnum), sendleaderflag, counter);

					listupdate(port);

					int g = 0;
					for (String bs : ls) {
						System.out.println(g + "番目" + bs);
						g++;
					}

					os.println(port);
					// os.println(leaderflag);

					leaderflag = decisionLeader(
							Integer.parseInt(checkRepetition), treebranch);

					if (Integer.parseInt(checkRepetition) == counter + 1) {
						checkRepetition = "stop";
					} else {
						checkRepetition = "go";
					}
					os.println(checkRepetition);

					// os.println(leaderflag);
					Thread.sleep(intv_time);
					is.close();
					os.close();

				} else if ("2".equals(line)) {
					parentnum = (Integer.parseInt(port) - 1) / treebranch;
					String newparent = ls.get(parentnum);

					outputStream(os, newparent, String.valueOf(parentnum),
							String.valueOf(counter), leaderflag);

					os.close();
					is.close();
				} else if ("3".equals(line)) {
					String checkRepetition = is.readLine();
					System.out.println("落ちたのを確認しました");

					os.println(ls.get(Integer.parseInt(port)));
					os.println(port);

					if (checkRepetition.equals(ls.getLast())) {
						checkRepetition = "stop";
					} else {
						checkRepetition = "go";
					}
					os.println(checkRepetition);

					System.out
							.println("num4=" + ls.get(Integer.parseInt(port)));
					line = null;
					runflag = false;
					is.close();
					os.close();
				} else {
					if (addrRegistor == true) {
						ls.add(add);
						addrRegistor = false;
					}

					if (line != null) {
						addClientAdress(line, ls);
						counter++;
					} else {
						break;
					}

					if (counter >= treebranch + 1) {
	
						leaderflag = decisionLeader(counter, treebranch);
						parentnum = (counter - 1) / treebranch;
						
						request = ls.get(parentnum);
						System.out.println(parentnum);

						outputStream(os, request, String.valueOf(parentnum),
								String.valueOf(counter), leaderflag);

						checkParameter(parentnum, counter, leaderflag);
					} else {
						// treeの親ノードに接続する人に接続する人を教える
						outputStream(os, name, "0", String.valueOf(counter),
								leaderflag);
					}
					Thread.sleep(intv_time);
				}
			}

		} catch (IOException e) {
			System.out.println(e);
		}

		catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

	/**
	 * @param port
	 *            parent value
	 */
	void listupdate(String port) {
		ls.remove(Integer.parseInt(port));
		ls.add(Integer.parseInt(port), ls.getLast());
		ls.removeLast();
	}

	void outputStream(PrintStream os, String request, String parentnum,
			String treenum, String leaderflag) {
		os.println(request);
		os.println(parentnum);
		os.println(treenum);
		os.println(leaderflag);
	}

	void checkParameter(int parent, int counter, String leaderflag) {
		System.out.println("pの値=" + parentnum);
		System.out.println("iの値=" + counter);
		System.out.println("leaderflag=" + leaderflag + "\n");
	}

	void addClientAdress(String line, LinkedList<String> ls) {
		int g = 0;
		if (line != null) {
			ls.add(line);
		}
		for (String bs : ls) {
			System.out.println(g + "番目" + bs);
			g++;
		}
	}

	String decisionLeader(int counter, int treebranch) {
		if ((counter - 1) % treebranch == 1) { // children in most young treenum
												// have leaderflag 1 other 0
			return "0";
		} else {
			return "1";
		}
	}
	

}

class Child {

	void reportLastNode(String hiddenchild, String newparent,
			String newtreenum, String newpnum, String newleaderflag, int i)
			throws IOException {
		try {
			Socket echoSocket;
			System.out.println(hiddenchild + "に接続します");
			echoSocket = new Socket(hiddenchild, 10001 + (i + 1));// i+1は実験中に同じマシーンを使っていたのでportを変えて対応、本番時には取り除く予定。

			DataOutputStream os = new DataOutputStream(
					echoSocket.getOutputStream());

			os.writeBytes(newparent + "\n");
			os.writeBytes(newpnum + "\n");
			os.writeBytes(newtreenum + "\n");
			os.writeBytes(newleaderflag + "\n");

			os.close();
		} catch (UnknownHostException e) {
			System.err.println("Don't know about host: localhost");
		} catch (IOException e) {
			System.err
					.println("Couldn't get I/O for the connection to: localhost");
		}

	}
}