package sql;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

import org.apache.log4j.Logger;

import server.BinaryListener;

public class SQL {

	private static Logger log = Logger.getLogger( BinaryListener.class );
	
	public Connection getConnection() {
		try {
			Class.forName("com.mysql.jdbc.Driver").newInstance();
		} catch (InstantiationException | IllegalAccessException
				| ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		try {
			Connection con = DriverManager
					.getConnection("jdbc:mysql://127.0.0.1/bwLehrpool?user=root&password=slx-ng-open");
			con.setAutoCommit(false);
			log.info(new Date() + " - Connection returned to Client.");
			return con;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			log.info(new Date() + " - Could not return connection to Client.");
			e.printStackTrace();
		}
		return null;
	}

	public int writeFTPUser(Connection con, String user, String pass) {
		Statement stm;
		try {
			stm = con.createStatement();

			int ret = stm
					.executeUpdate("INSERT INTO `bwLehrpool`.`FtpUsers`(`User`,`Password`,`Uid`,`Gid`,`Dir`)VALUES('"
							+ user
							+ "',SHA1('"
							+ pass
							+ "'),'10001','12345','/srv/openslx/nfs/temp');");
			con.commit();
			log.info(new Date() + " - created FTPUser "+user+" : "+pass+".");
			return ret;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			log.info(new Date() + " - FTPUser not created.");
			e.printStackTrace();
		}
		return -1;
	}

	public int DeleteUser(Connection con, String user) {
		Statement stm;
		try {
			stm = con.createStatement();

			int ret = stm
					.executeUpdate("DELETE FROM `bwLehrpool`.`FtpUsers` where User like '"
							+ user + "';");
			con.commit();
			log.info(new Date() + " - FTPUser "+user+" deleted.");
			return ret;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			log.info(new Date() + " - Could not delete FTPUser "+user+".");
			e.printStackTrace();
		}
		return -1;
	}

	public ResultSet getImage(Connection con) {
		try {
			Statement stm = con.createStatement();

			return stm
					.executeQuery("SELECT image_name FROM bwLehrpool.m_VLData_imageInfo;");

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return null;
	}

	public ResultSet getPathOfImage(Connection con, String image_id,
			String version) {
		try {
			Statement stm = con.createStatement();

			return stm
					.executeQuery("SELECT image_path FROM bwLehrpool.m_VLData_imageInfo where GUID_imageID='"
							+ image_id
							+ "' and imageVersion='"
							+ version
							+ "';");

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return null;
	}

	public int setInstitution(Connection con, String university) {
		try {
			Statement stm = con.createStatement();

			ResultSet ret = stm
					.executeQuery("SELECT * FROM bwLehrpool.m_institution where name like'"
							+ university + "';");
			if (ret.next() == false) {
				Random rand = new Random();
				int id = rand.nextInt();
				stm.executeUpdate("INSERT INTO `bwLehrpool`.`m_institution`(`institutionID`,`name`)VALUES('"
						+ id + "','" + university + "');");
				con.commit();
				ResultSet rs = stm
						.executeQuery("SELECT institutionID FROM bwLehrpool.m_institution WHERE name like '"
								+ university + "';");
				rs.next();
				return rs.getInt("institutionID");
			} else {
				return ret.getInt("institutionID");
			}

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return -1;
	}

	public int setPerson(Connection con, String login, String lastname,
			String firstname, String mail, Date lastlogin, int Institution) {
		DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		try {
			Statement stm = con.createStatement();

			ResultSet ret = stm
					.executeQuery("SELECT userID FROM bwLehrpool.m_user where Nachname like '"
							+ lastname
							+ "' and Vorname like '"
							+ firstname
							+ "';");
			if (ret.next() == false) {
				Random rand = new Random();
				int id = rand.nextInt();
				stm.executeUpdate("INSERT INTO `bwLehrpool`.`m_user`(`userID`,`loginName`,`nachname`,`vorname`,`mail`,`lastLogin`,`institution`)VALUES('"
						+ id
						+ "','Platzhalter','"
						+ lastname
						+ "','"
						+ firstname
						+ "','"
						+ mail
						+ "','"
						+ formatter.format(new Date())
						+ "','"
						+ Institution
						+ "');");
				con.commit();
				ResultSet rs = stm
						.executeQuery("SELECT userID FROM bwLehrpool.m_user where Nachname like '"
								+ lastname
								+ "' and Vorname like '"
								+ firstname
								+ "';");
				rs.next();
				return rs.getInt("userID");
			} else {
				return ret.getInt("userID");
			}

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return -1;
	}

	public boolean setImageData(Connection con, int pk_person, boolean license,
			boolean internet, long cpu, long ram, String imagename,
			String imagePath) {

		DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

		int internet_bol = 0;
		int license_bol = 0;
		if (internet == true) {
			internet_bol = 1;
		}
		if (license == true) {
			license_bol = 1;
		}

		try {
			Statement stm = con.createStatement();
			Random random = new Random();
			int uid = random.nextInt();
			stm.executeUpdate("INSERT INTO `bwLehrpool`.`m_VLData_imageInfo`(`GUID_imageID`,`imageVersion`,`image_name`,`image_path`,`image_lastCall`,`image_create_time`,`image_update_time`,`image_owner`,`image_change_by`,`rec_create_time`,`rec_change_time`,`rec_owner`,`rec_change_by`,`content_operatingSystem`,`status_isCompressed`,`status_isSecure`,`status_isOptimzed`,`status_isValid`,`status_isReady`,`status_isDeleted`,`status_isLastOfficialVersion`,`cond_hasLicenseRestriction`,`cond_hasInternetRestriction`,`cond_minRAM`,`cond_minCPUs`)VALUES('"
					+ uid //GUID_imageID
					+ "',1,'" //imageVersion
					+ imagename //image_name
					+ "','"
					+ imagePath //image_path
					+ "','"
					+ formatter.format(new Date()) //image_lastCall
					+ "','"
					+ formatter.format(new Date()) //image_create_time
					+ "','"
					+ formatter.format(new Date()) //image_update_time
					+ "','"
					+ pk_person //image_owner
					+ "','"
					+ pk_person //image_change_by
					+ "','"
					+ formatter.format(new Date()) //rec_create_time
					+ "','"
					+ formatter.format(new Date()) //rec_change_time
					+ "','"
					+ pk_person //rec_owner
					+ "','"
					+ pk_person //rec_change_by
					+ "',0" //content_operatingSystem
					+ ",1" //status_isCompressed
					+ ",1" //status_isSecure
					+ ",1" //status_isOptimzed
					+ ",1" //status_isValid
					+ ",1" //status_isReady
					+ ",0" //status_isDeleted
					+ ",0,'" //status_isLastOfficialVersion
					+ license_bol //cond_hasLicenseRestriction
					+ "','"
					+ internet_bol //cond_hasInternetRestriction
					+ "','"
					+ ram //cond_minRAM
					+ "','"
					+ cpu //cond_minCPUs
					+ "');");
			con.commit();

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

	}

	public ResultSet getImageList(Connection con) {
		try {
			Statement stm = con.createStatement();

			return stm
					.executeQuery("SELECT vl.GUID_imageID, vl.imageVersion,vl.image_name, vl.cond_hasLicenseRestriction, os.name, '' as lecture,vl.image_update_time,  Concat(u.Nachname,' ',u.Vorname) as user FROM bwLehrpool.m_VLData_imageInfo vl, bwLehrpool.m_operatingSystem os, bwLehrpool.m_user u Where vl.content_operatingSystem=os.operatingSystemID and vl.image_owner=u.userID and vl.image_name not in (SELECT vl.image_name FROM bwLehrpool.m_VLData_imageInfo vl, bwLehrpool.m_operatingSystem os, bwLehrpool.m_VLData_lecture lect, bwLehrpool.m_user u Where vl.content_operatingSystem=os.operatingSystemID and lect.imageID=vl.GUID_imageID and vl.image_owner=u.userID) union SELECT vl.GUID_imageID, vl.imageVersion,vl.image_name, vl.cond_hasLicenseRestriction, os.name, lect.name as lecture,  vl.image_update_time, Concat(u.Nachname,' ',u.Vorname) as user FROM bwLehrpool.m_VLData_imageInfo vl, bwLehrpool.m_operatingSystem os, bwLehrpool.m_VLData_lecture lect, bwLehrpool.m_user u Where vl.content_operatingSystem=os.operatingSystemID and lect.imageID=vl.GUID_imageID and vl.image_owner=u.userID;");

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

	public ResultSet getLectureList(Connection con) {
		try {
			Statement stm = con.createStatement();

			return stm
					.executeQuery("SELECT l.lectureID, l.name, l.isActive,l.startTime,l.endTime,l.lastUsed,l.description, i.image_name, concat(u.Nachname,' ',u.Vorname) as user FROM bwLehrpool.m_VLData_lecture l, bwLehrpool.m_VLData_imageInfo i, bwLehrpool.m_user u where i.GUID_imageID=l.imageID and l.admin_owner=u.userID;");

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

	public ResultSet getAllOS(Connection con) {

		try {
			Statement stm = con.createStatement();
			return stm
					.executeQuery("SELECT name FROM bwLehrpool.m_operatingSystem;");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return null;

	}

	public ResultSet getPersonData(Connection con, String Vorname,
			String Nachname) {
		try {
			Statement stm = con.createStatement();
			return stm
					.executeQuery("SELECT u.Nachname, u.Vorname, u.mail, i.name FROM bwLehrpool.m_user u, bwLehrpool.m_institution i where u.Nachname like '"
							+ Nachname
							+ "' and u.Vorname like '"
							+ Vorname
							+ "' and u.institution=i.institutionID;");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}

	public int setLectureData(Connection con, int pk_person, int pk_image,
			int imageversion, String name, String desc, String shortdesc,
			String start, String end, boolean isactive) {

		DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		int active_bol = 0;

		if (isactive == true) {
			active_bol = 1;
		}
		try {
			Statement stm = con.createStatement();
			Random random = new Random();
			int uid = random.nextInt();
			stm.executeUpdate("INSERT INTO `bwLehrpool`.`m_VLData_lecture`(`lectureID`,`name`,`isActive`,`startTime`,`endTime`,`lastUsed`,`shortDescription`,`description`,`imageID`,`imageVersion`,`admin_createTime`,`admin_changeTime`,`admin_owner`,`admin_change_by`)VALUES('"
					+ uid
					+ "','"
					+ name
					+ "','"
					+ active_bol
					+ "','"
					+ start
					+ "','"
					+ end
					+ "','"
					+ formatter.format(new Date())
					+ "','"
					+ shortdesc
					+ "','"
					+ desc
					+ "','"
					+ pk_image
					+ "','"
					+ imageversion
					+ "','"
					+ formatter.format(new Date())
					+ "','"
					+ formatter.format(new Date())
					+ "','"
					+ pk_person
					+ "','"
					+ pk_person + "');");
			con.commit();

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return 0;

	}

	public ResultSet getImageIDandVersion(Connection con, String name) {
		try {
			Statement stm = con.createStatement();
			return stm
					.executeQuery("SELECT GUID_imageID, imageVersion FROM bwLehrpool.m_VLData_imageInfo where image_name like '"
							+ name + "';");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}

	public ResultSet getImageData(Connection con, String id, String version) {
		try {
			Statement stm = con.createStatement();
			System.out.println("Test");
			return stm
					.executeQuery("SELECT image_name,cond_hasInternetRestriction,cond_hasLicenseRestriction, cond_minCPUs, cond_minRAM FROM bwLehrpool.m_VLData_imageInfo where GUID_imageID = '"
							+ id + "' and imageVersion = '" + version + "' ;");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}

	public int UpdateImageData(Connection con, String name, String newName,
			boolean license, boolean internet, long cpu, long ram, String id,
			String version) {
		try {
			DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
			Statement stm = con.createStatement();
			int newVersion = Integer.parseInt(version) + 1;

			int internet_bol = 0;
			int license_bol = 0;
			if (internet == true) {
				internet_bol = 1;
			}
			if (license == true) {
				license_bol = 1;
			}
			System.out.println(internet_bol);
			System.out.println(license_bol);
			stm.executeUpdate("UPDATE `bwLehrpool`.`m_VLData_imageInfo` SET `imageVersion` = '"
					+ newVersion
					+ "',`image_name` = '"
					+ newName
					+ "',`image_update_time` = '"
					+ formatter.format(new Date())
					+ "',`rec_change_time` = '"
					+ formatter.format(new Date())
					+ "',`cond_hasLicenseRestriction` = '"
					+ license_bol
					+ "',`cond_hasInternetRestriction` = '"
					+ internet_bol
					+ "',`cond_minRAM` = '"
					+ ram
					+ "',`cond_minCPUs` = '"
					+ cpu
					+ "' WHERE `GUID_imageID` = '"
					+ id
					+ "' AND `imageVersion` = '" + version + "';");
			con.commit();
			return 0;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return -1;
	}
	
	public int updateLectureData(Connection con, int pk_image,
			int imageversion, String name, String newName ,String desc, String shortdesc,
			String start, String end, boolean isactive, String id) {

		DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		int active_bol = 0;

		if (isactive == true) {
			active_bol = 1;
		}
		try {
			Statement stm = con.createStatement();
			stm.executeUpdate("UPDATE `bwLehrpool`.`m_VLData_lecture` SET `name` = '"
					+newName
					+"',`isActive` = '"
					+active_bol
					+"',`startTime` = '"
					+start
					+"',`endTime` = '"
					+end
					+"',`description` = '"
					+desc
					+"',`imageID` = '"
					+pk_image
					+"',`imageVersion` = '"
					+imageversion
					+"',`admin_changeTime` = '"
					+formatter.format(new Date())
					+"'WHERE `lectureID` = '"
					+id+"';" );
			con.commit();

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return 0;

	}
}