package org.openslx.imagemaster;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ConnectException;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.SignatureException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.util.UUID;

import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

import junit.framework.TestCase;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.commons.net.ftp.FTPSClient;
import org.apache.log4j.Logger;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport;
import org.openslx.imagemaster.thrift.iface.FtpCredentials;
import org.openslx.imagemaster.thrift.iface.ImageData;
import org.openslx.imagemaster.thrift.iface.ImageServer.Client;
import org.openslx.imagemaster.thrift.iface.ServerSessionData;
import org.openslx.imagemaster.thrift.iface.SessionData;
import org.openslx.imagemaster.thrift.iface.UserInfo;
import org.openslx.imagemaster.util.AsymMessageSign;


public class ServerTest extends TestCase
{
	private static Logger log = Logger.getLogger( ServerTest.class );
	
	@Override
	public void setUp() throws Exception {
		// start the server
//		Thread t = new Thread(new Runnable() {
//			
//			@Override
//			public void run()
//			{
//				App.main( null );
//			}
//		}, "App");
//		t.start();
//		Thread.sleep( 2000 );
	}
	
	/**
	 * Test the authentication
	 * 
	 * @throws TException
	 * @throws IOException 
	 */
	public void testAuthentication() throws TException, IOException
	{
		TTransport transport = new TSocket( "localhost", 9090 );
		transport.open();

		TProtocol protocol = new TBinaryProtocol( transport );
		Client client = new Client( protocol );

		assertTrue( "Could not ping server", client.ping() );
		
		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		System.out.print("Enter username: ");
		String username = reader.readLine();
		System.out.print("Enter password: ");
		String password = reader.readLine();

		SessionData sessionData = client.authenticate( username, password );
		UserInfo userInfo = client.getUserFromToken( sessionData.getAuthToken() );
		System.out.println( "User info: " + userInfo );
		System.out.println( "Server address from MySQL: " + sessionData.serverAddress );
	}

	/**
	 * Test the server authentication and FTP Upload.
	 * 
	 * @throws TException
	 * @throws IOException
	 * @throws SocketException
	 * @throws KeyStoreException 
	 * @throws CertificateException 
	 * @throws NoSuchAlgorithmException 
	 * @throws UnrecoverableKeyException 
	 * @throws SignatureException 
	 * @throws InvalidKeyException 
	 * @throws InvalidAlgorithmParameterException 
	 */
	public void testServerAuthAndFtpUpload() throws TException, SocketException, IOException, UnrecoverableKeyException, NoSuchAlgorithmException, CertificateException, KeyStoreException, InvalidKeyException, SignatureException, InvalidAlgorithmParameterException
	{
		if (true) return;
		
		@SuppressWarnings( "unused" )
		TTransport transport = new TSocket( "localhost", 9090 );
		transport.open();

		TProtocol protocol = new TBinaryProtocol( transport );
		Client client = new Client( protocol );

		assertTrue( "Could not ping server", client.ping() );

		String stringToEncrypt = client.startServerAuthentication( "Test Organization" );
		System.out.println( "Authentication started. Got string: " + stringToEncrypt );

		AsymMessageSign messageSigner = new AsymMessageSign( "ftp", "password", "./config/keystore.jks" );
		byte[] response = messageSigner.signMessage( stringToEncrypt );
		
		System.out.println( "Signed string: " + response );
		ByteBuffer bBuffer = ByteBuffer.wrap( response );

		ServerSessionData data = client.serverAuthenticate( "Test Organization", bBuffer );
		System.out.println( "Authenticated and got sid: '" + data.getSessionId() + "'" );

		// Create ImageData
		int version = 1;
		String imageName = "maschine.vmkd";
		UUID uuid = UUID.randomUUID();
		long imageCreateTime = System.currentTimeMillis();
		long imageUpdateTime = imageCreateTime;
		String imageOwner = "ns202";
		String contentOperatingSystem = "win7";
		boolean statusIsValid = true;
		boolean statusIsDeleted = false;
		String imageShortDescrption = "EIN SUPER TOLLES IMAGE!";
		String imageLongDescription = "Lorem ipsum dolor sit amet.";
		
		String fileName = "/home/nils/file_to_upload.bin";

		ImageData imageData = new ImageData( uuid.toString(), version, imageName,
				imageCreateTime, imageUpdateTime, imageOwner, contentOperatingSystem,
				statusIsValid, statusIsDeleted, imageShortDescrption, imageLongDescription, new File(fileName).getTotalSpace() );

		System.out.println( "Created imageData..." );

		FtpCredentials ftpCredentials = client.submitImage( data.sessionId, imageData );
		System.out.println( "Got FTP credentials. User: " + ftpCredentials.username + ", password: " + ftpCredentials.password );

		FTPSClient FtpClient = new FTPSClient( "SSL", true );
		System.out.println("Created new ftpsclient...");
		TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance( KeyManagerFactory.getDefaultAlgorithm() );
		KeyStore keystore = KeyStore.getInstance( "JKS" );
		keystore.load( new FileInputStream( new File( "./config/keystore.jks" ) ), "password".toCharArray() );
		System.out.println("Loaded keystore..");
		trustManagerFactory.init( keystore );
		TrustManager trustManager = trustManagerFactory.getTrustManagers()[0];
		FtpClient.setTrustManager(trustManager);
		
		System.out.println("Trying to connect...");
		
		String host = "localhost";
		int port = 2221;
		String user = ftpCredentials.username;
		String password = ftpCredentials.password;

		try {
			FtpClient.connect( host, port );
			System.out.println( "Connected to " + host + ":" + port + ". Reply code: " + FtpClient.getReplyCode() );
			if ( !FTPReply.isPositiveCompletion( FtpClient.getReplyCode() ) ) {
				throw new ConnectException( "No positive reply code." );
			}
			if ( !FtpClient.login( user, password ) ) {
				throw new ConnectException( "Could not login." );
			}
			System.out.println( "Logged in with user: " + user );
			FtpClient.setFileType( FTP.BINARY_FILE_TYPE );
			FtpClient.enterLocalPassiveMode();
			System.out.println( "Entered PASSIVE MODE" );
			InputStream input = new FileInputStream( fileName );
			System.out.print( "Starting file upload ... " );
			FtpClient.storeFile( "xcvb.vmdk", input );
			System.out.println( "done." );
			FtpClient.noop();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if ( FtpClient.isConnected() ) {
				try {
					FtpClient.logout();
					FtpClient.disconnect();
					boolean result = client.finshedUpload( ftpCredentials.username, imageData );
					System.out.println("Telling server that upload finished: " + result);
				} catch ( IOException e ) {
					e.printStackTrace();
				}
			}
		}

	}
}