package org.openslx.imagemaster;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;
import org.openslx.imagemaster.server.MasterFtpServer;
import org.openslx.imagemaster.thrift.server.BinaryListener;

public class App {
	private static Logger log = Logger.getLogger(App.class);

	private static List<Thread> servers = new ArrayList<>();

	public static void main(String[] args) {
		// Init logging
		log.info("Starting Application");

		// Load properties
		boolean error = false;
		BufferedInputStream stream = null;
		try {
			stream = new BufferedInputStream(new FileInputStream(
					"config/global.properties"));
			Globals.properties.load(stream);
		} catch (IOException e) {
			log.error("Could not load config file. Quitting.");
			error = true;
		} finally {
			if (stream != null) {
				try {
					stream.close();
				} catch (IOException e) {
				}
			}
			if (error)
				System.exit(1);
			log.info("Loaded config file");
		}

		// Create binary listener
		Thread t;
		t = new Thread(new BinaryListener(), "BinaryListener");
		servers.add(t);
		t.start();

		// Create Ftp Server
		Thread f;
		MasterFtpServer ftpServer = new MasterFtpServer(2221, "admin",
				"SI*HoZCC!]V)p>B2", Globals.properties.getProperty("ftp_base_dir"));
		f = new Thread(ftpServer, "FtpServer");
		servers.add(f);
		f.start();
		
		/*
		 * FTP Users can be added later with:
		 * ftpServer.addUser(username, password, ftp_root);
		 * 
		 * And removed with:
		 * removeUser(username);
		 */
		
		////////////////////////////////////////////////
		SecureRandom random = new SecureRandom();
		String lettersP="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890+-$%&/()=?@";
		String lettersU="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
		String generatedUser = "";
		String generatedPass = "";
		for (int i = 0; i < 16; i++) {
			int index = (int)(random.nextDouble()*lettersU.length());
			generatedUser += lettersU.substring(index, index + 1);
			index = (int)(random.nextDouble()*lettersP.length());
			generatedPass += lettersP.substring(index, index + 1);
		}
		String dir = Globals.properties.getProperty("ftp_base_dir") + "/" + generatedUser + "/";
		if (new File(dir).mkdir()) {
			ftpServer.addUser(generatedUser, generatedPass, dir, true);
			log.info("Generated user/pass: " + generatedUser + "\t" + generatedPass + "\n with home dir: " + dir);
		}
		////////////////////////////////////////////////

		// Run more servers
		// ...
		// Wait for all servers to die
		for (Thread wait : servers) {
			boolean success = false;
			while (!success) {
				try {
					wait.join();
					success = true;
				} catch (InterruptedException e) {
					// Do nothing...
				}
			}
		}
		
		ftpServer.removeUser(generatedUser);
		
		log.info("All Servers shut down, exiting...");
	}
}