package org.openslx.satellitedaemon.ftp;

import java.io.File;
import java.io.IOException;
import java.util.Arrays;

import junit.framework.Assert;

import org.apache.ftpserver.FtpServer;
import org.apache.ftpserver.ftplet.FtpException;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

public class FtpUpDownUtilTest {
	   private static final int    FTP_PORT           = 2121;
	   private static final String FTP_HOST           = "localhost";
	   private static final String FTP_HOME_DIR       = "target/FtpHome";
	   private static final String FTPUSERSPROPS_FILE = "target/FtpUsers.properties";
	   private static final String READ_USER_NAME     = "ReadUserName";
	   private static final String READ_USER_PWD      = "ReadUserPwd";
	   private static final String WRITE_USER_NAME    = "WriteUserName";
	   private static final String WRITE_USER_PWD     = "WriteUserPwd";
	   private static FtpServer ftpServer;

	   @BeforeClass
	   public static void startFtpServer() throws FtpException, IOException
	   {
	      ftpServer = FtpTestUtil.createFtpServer( FTP_PORT, FTP_HOME_DIR,
	            READ_USER_NAME, READ_USER_PWD, WRITE_USER_NAME, WRITE_USER_PWD, FTPUSERSPROPS_FILE, 0 );
	      ftpServer.start();
	   }

	   @AfterClass
	   public static void stoppFtpServer()
	   {
	      // Um den FTP-Server von ausserhalb des Tests eine Zeit lang ueber
	      // ftp://WriteUserName:WriteUserPwd@localhost:2121
	      // anzusprechen, kann folgende Zeile aktiviert werden:
	      // try { Thread.sleep( 55000 ); } catch( InterruptedException e ) {/*ok*/}
	      ftpServer.stop();
	      ftpServer = null;
	   }

	   @Test
	   public void testFtp() throws IOException
	   {
	      final String LOCAL_SRC_FILE = "TestSrc.txt";
	      final String LOCAL_DST_FILE = "target/TestDst.txt";
	      final String REMOTE_FILE    = "Test.txt";

	      File testFile = new File( LOCAL_SRC_FILE );
	      if( !testFile.exists() ) testFile.createNewFile();

	      // Upload-Versuch ohne Schreibberechtigung muss fehlschlagen:
	      Assert.assertFalse( "READ_USER", FtpUpDownUtil.upload( LOCAL_SRC_FILE, REMOTE_FILE, FTP_HOST, FTP_PORT,
	            READ_USER_NAME, READ_USER_PWD, false ) );

	      // Teste Upload mit Schreibberechtigung:
	      Assert.assertTrue( "WRITE_USER", FtpUpDownUtil.upload( LOCAL_SRC_FILE, REMOTE_FILE, FTP_HOST, FTP_PORT,
	            WRITE_USER_NAME, WRITE_USER_PWD, false ) );
	      Assert.assertTrue( "REMOTE_FILE.exists", new File( FTP_HOME_DIR, REMOTE_FILE ).exists() );

	      // Teste Download:
	      Assert.assertTrue( "Download", FtpUpDownUtil.download( LOCAL_DST_FILE, REMOTE_FILE, FTP_HOST, FTP_PORT,
	            READ_USER_NAME, READ_USER_PWD, false ) );
	      Assert.assertTrue( "LOCAL_DST_FILE.exists", new File( LOCAL_DST_FILE ).exists() );

	      // Teste Auflistung:
	      String[] remoteFilenameList = FtpUpDownUtil.list( FTP_HOST, FTP_PORT, READ_USER_NAME, READ_USER_PWD );
	      Assert.assertTrue( "remoteFilenameList", Arrays.asList( remoteFilenameList ).contains( REMOTE_FILE ) );
	   }
}