package server;

import java.io.File;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;

import org.apache.commons.io.FileUtils;
import org.apache.log4j.Logger;
import org.apache.thrift.TException;

import sql.SQL;
import util.XMLCreator;

public class ServerHandler implements Server.Iface {

	static SQL sql = new SQL();
	static Connection con = sql.getConnection();
	private static Logger log = Logger.getLogger(ServerHandler.class);

	/**
	 * @param args
	 */
	/*
	 * public static void main(String[] args) { // TODO Auto-generated method
	 * stub
	 * 
	 * }
	 */

	@Override
	public User getFtpUser() throws TException {
		log.info(new Date() + " - returing FTPUser...");
		User user = new User();
		user.setUserName(UUID.randomUUID().toString().substring(0, 8));
		user.setPassword(getEncodedSha1Sum(UUID.randomUUID().toString()
				.substring(0, 8)));
		user.setPath("/srv/openslx/nfs/temp");
		SQL sql = new SQL();
		Connection con = sql.getConnection();
		sql.writeFTPUser(con, user.getUserName(), user.getPassword());
		log.info(new Date() + " - successfully returned FTPUser");
		return user;
	}

	public String getEncodedSha1Sum(String key) {
		try {
			log.info(new Date() + " - returned EncodedSha1Sum...");
			MessageDigest md = MessageDigest.getInstance("SHA1");
			md.update(key.getBytes());
			log.info(new Date() + " - successfully returned EncodedSha1Sum");
			return new BigInteger(1, md.digest()).toString(16);
		} catch (NoSuchAlgorithmException e) {
			// handle error case to taste
		}
		return null;
	}

	@Override
	public long DeleteFtpUser(String user) throws TException {
		int ret = sql.DeleteUser(con, user);
		log.info(new Date() + " - deleting FTPUser");
		return ret;
	}

	@Override
	public String getPathOfImage(String image_id, String version)
			throws TException {

		try {
			log.info(new Date() + " - returning PathOfImage...");
			ResultSet rs = sql.getPathOfImage(con, image_id, version);
			System.out.println("Path SQL erfolgreich");
			rs.next();
			System.out.println(rs.getString("image_path"));
			log.info(new Date() + " - successfully returned PathOfImage: "
					+ rs.getString("image_path"));
			return rs.getString("image_path");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		log.info(new Date() + " - returning PathOfImage: null");
		return null;
	}

	@Override
	public boolean writeVLdata(String imagename, String firstname,
			String lastname, String university, String Mail, String Tel,
			String Fak, boolean license, boolean internet, long ram, long cpu,
			String imagePath) throws TException {
		String login = "tete";

		int pk_institution = sql.setInstitution(con, university);

		int pk_person = sql.setPerson(con, login, lastname, firstname, Mail,
				new Date(), pk_institution);

		sql.setImageData(con, pk_person, license, internet, cpu, ram,
				imagename, imagePath);

		log.info(new Date() + " - writing VLdata");
		// TODO Auto-generated method stub
		return true;
	}

	@Override
	public List<Image> getImageList() throws TException {
		ResultSet res = sql.getImageList(con);

		List<Image> list = new ArrayList<Image>();

		try {

			while (res.next()) {

				list.add(new Image(res.getString("GUID_imageID"), res
						.getString("imageVersion"),
						res.getString("image_name"), res
								.getString("cond_hasLicenseRestriction"), res
								.getString("name"), res.getString("lecture"),
						res.getString("image_update_time"), res
								.getString("user")));

			}

			log.info(new Date() + " - returning ImageList: " + list.size());
			return list;
		} catch (SQLException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		log.info(new Date() + " - returning ImageList: " + list.size());
		return null;
	}

	@Override
	public List<String> getAllOS() throws TException {
		List<String> list = new ArrayList<>();
		ResultSet rs = sql.getAllOS(con);
		try {
			while (rs.next()) {
				list.add(rs.getString("name"));
			}
			log.info(new Date() + " - returning AllOS: " + list.size());
			return list;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		log.info(new Date() + " - returning AllOS: " + list.size());
		return null;
	}

	@Override
	public Map<String, String> getPersonData(String Vorname, String Nachname)
			throws TException {
		Map<String, String> map = new HashMap<String, String>();

		ResultSet rs = sql.getPersonData(con, Vorname, Nachname);
		try {
			while (rs.next()) {

				map.put("mail", rs.getString("mail"));
				map.put("Nachname", rs.getString("Nachname"));
				map.put("Vorname", rs.getString("Vorname"));
				map.put("Hochschule", rs.getString("name"));

			}
			log.info(new Date() + " - returning PersonData: " + map.size());
			return map;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		log.info(new Date() + " - returning PersonData: " + map.size());
		return null;
	}

	@Override
	public boolean writeLecturedata(String name, String shortdesc, String desc,
			String startDate, String endDate, boolean isActive,
			String imagename, String firstname, String lastname,
			String university, String Mail, String Tel, String Fak)
			throws TException {
		int pk_image = 0;
		String login = "tete";
		int imageversion = 0;
		int pk_institution = sql.setInstitution(con, university);
		int pk_person = sql.setPerson(con, login, lastname, firstname, Mail,
				new Date(), pk_institution);

		ResultSet image = sql.getImageIDandVersion(con, imagename);

		try {
			while (image.next()) {
				pk_image = image.getInt("GUID_imageID");
				imageversion = image.getInt("imageVersion");
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		System.out.println(startDate);
		sql.setLectureData(con, pk_person, pk_image, imageversion, name, desc,
				shortdesc, startDate, endDate, isActive);
		XMLCreator xml = new XMLCreator(con, name);
		try {
			xml.create(name);
			log.info(new Date() + " - XML created");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ParserConfigurationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (TransformerException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}

	@Override
	public boolean startFileCopy(String file) throws TException {
		File tmpFile = new File(file);

		System.out.println("Vor Move" + new Date());
		try {

			//der übergebene Filename ist falsch - hier muss der generierte name geholt werden, nicht der ursprüngliche name. wo wird dieser eingelesen?
			FileUtils.moveFile(tmpFile, new File("141.79.128.103:/srv/nfs4slx/"+tmpFile.getName()));

			//der übergebene Filename ist falsch - hier muss der generierte name geholt werden, nicht der ursprüngliche name. wo wird dieser eingelesen?
			FileUtils.moveFile(tmpFile, new File("141.79.128.103:/srv/nfs4slx/"+tmpFile.getName()));

			// der übergebene Filename ist falsch - hier muss der generierte
			// name geholt werden, nicht der ursprüngliche name. wo wird dieser
			// eingelesen?
			FileUtils.moveFile(tmpFile, new File("141.79.128.103:/srv/nfs4slx/"
					+ tmpFile.getName()));
			log.info(new Date() + " - file moved");

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return true;
	}

	@Override
	public Map<String, String> getImageData(String imageid, String imageversion)
			throws TException {

		ResultSet data = sql.getImageData(con, imageid, imageversion);

		Map<String, String> map = new HashMap<String, String>();
		try {
			while (data.next()) {
				System.out.println(data
						.getString("cond_hasInternetRestriction")
						+ data.getString("cond_hasLicenseRestriction")
						+ data.getString("cond_minCPUs")
						+ data.getString("cond_minRAM"));
				map.put("name", data.getString("image_name"));
				map.put("internet",
						data.getString("cond_hasInternetRestriction"));
				map.put("license", data.getString("cond_hasLicenseRestriction"));
				map.put("cpu", data.getString("cond_minCPUs"));
				map.put("ram", data.getString("cond_minRAM"));

			}
			System.out.println("return success");
			log.info(new Date() + " - returning ImageData: "+map.size());
			return map;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		log.info(new Date() + " - returning ImageData: "+map.size());
		return null;

	}

	@Override
	public boolean updateImageData(String name, String newName,
			boolean license, boolean internet, long ram, long cpu, String id,
			String version) throws TException {
		System.out.println("Server: Vor Update");
		sql.UpdateImageData(con, name, newName, license, internet, cpu, ram,
				id, version);
		System.out.println("Update erfolgreich");
		log.info(new Date() + " - updated ImageData");
		return false;
	}

	@Override
	public Map<String, String> getLectureData(String lecturename)
			throws TException {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public List<Lecture> getLectureList() throws TException {
		ResultSet res = sql.getLectureList(con);

		List<Lecture> list = new ArrayList<Lecture>();

		try {

			while (res.next()) {

				list.add(new Lecture(res.getString("lectureID"), res
						.getString("name"), res.getString("isActive"), res
						.getString("startTime"), res.getString("endTime"), res
						.getString("lastUsed"), res.getString("description"),
						res.getString("image_name"), res.getString("user")));

			}
			log.info(new Date() + " - returning LectureList: "+list.size());
			return list;
		} catch (SQLException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		log.info(new Date() + " - returning LectureList: "+list.size());
		return null;
	}

	@Override
	public boolean updateLecturedata(String name, String newName,
			String shortdesc, String desc, String startDate, String endDate,
			boolean isActive, String imagename, String firstname,
			String lastname, String university, String Mail, String Tel,
			String Fak, String id) throws TException {
		int pk_image = 0;
		int imageversion = 0;
		ResultSet image = sql.getImageIDandVersion(con, imagename);

		try {
			while (image.next()) {
				pk_image = image.getInt("GUID_imageID");
				imageversion = image.getInt("imageVersion");
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
<<<<<<< HEAD
		sql.updateLectureData(con, pk_image, imageversion, lastname, newName, desc, shortdesc, startDate, endDate, isActive, id);
		
		XMLCreator xml=new XMLCreator(con, newName);
		try {
			xml.create(newName);
		} catch (SQLException | ParserConfigurationException
				| TransformerException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
=======
		sql.updateLectureData(con, pk_image, imageversion, lastname, newName,
				desc, shortdesc, startDate, endDate, isActive, id);
		log.info(new Date() + " - updated LectureData");
>>>>>>> a3c0327dbd49efc29ede542f7093638941a7ae13
		return false;
	}
	
	@Override
	public boolean deleteImageServer(String imageid, String imageversion) throws TException{
		 /*
		  * 
		  * 
		  * 
		  * File noch iniziieren
		  */
		// Pfad der Datei aus der DB auslesen und hier eintragen
		//File tmpFile=new File("127.0.0.1:/srv/openslx/nfs/temp/");
		File tmpFile = null;
		
		try {
			//File wird von Server gelöscht
			FileUtils.forceDelete(tmpFile);
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();

		}
		
		return true;
	}
	
	@Override
	public boolean deleteImageData(String id, String version) throws TException {

		return sql.deleteImage(con, id, version);
	}

	@Override
	public boolean connectedToLecture(String id, String version)
			throws TException {
		// TODO Auto-generated method stub
		return sql.connectedToLecture(con, id, version);
	}
	
	public boolean deleteLecture(String id){
		return sql.deleteLecture(con, id);
	}




}