package org.openslx.imagemaster.db;

import org.apache.log4j.Logger;
import org.openslx.imagemaster.session.User;
import org.openslx.imagemaster.util.Sha512Crypt;

/**
 * Represents a user that can login against the masterserver.
 */
public class DbUser extends User
{

	private static Logger log = Logger.getLogger( DbUser.class );

	public DbUser( int userId, String username, String password, String organization,
			String firstName, String lastName, String eMail,
			String satelliteAddress )
	{
		super( userId, username, password, organization, firstName, lastName, eMail,
				satelliteAddress );
	}

	/**
	 * Query database for user with given login
	 * 
	 * @param login
	 *           (user@organization)
	 * @return instance of DbUser for matching entry from DB, or null if not
	 *         found
	 */
	public static DbUser forLogin( final String login )
	{
		final String[] parts = login.split( "@" );
		if ( parts.length != 2 )
			return null;
		return MySQL
				.findUniqueOrNull(
						DbUser.class,
						"SELECT user.userid, user.username, user.password, user.organization, user.firstname, user.lastname, user.email, satellite.address FROM user"
								+ " LEFT JOIN satellite USING (organization)"
								+ " WHERE user.username = ? AND user.organization = ? LIMIT 1",
						parts[0], parts[1] );
	}

	/**
	 * Query database for user with given userId
	 * 
	 * @param userid
	 * @return instance of DbUser for matching entry from DB, or null if not
	 *         found
	 */
	public static DbUser forLogin( final int userid )
	{
		return MySQL
				.findUniqueOrNull(
						DbUser.class,
						"SELECT user.userid, user.username, user.password, user.organization, user.firstname, user.lastname, user.email, satellite.address FROM user"
								+ " LEFT JOIN satellite USING (organization)"
								+ " WHERE user.userid = ? LIMIT 1",
						userid );
	}

	public static boolean exists( final String login )
	{
		return forLogin( login ) != null;
	}

	public static DbUser forLogin( String login, String password )
	{
		DbUser user = forLogin( login );
		if ( user == null || !Sha512Crypt.verifyPassword( password, user.password ) )
			return null;
		return user;
	}

	public static boolean insertOrUpdate( User user )
	{
		log.debug( "Inserted user '" + user.username + "' into db." );
		MySQL.update(
				"INSERT INTO user (username, password, organization, firstname, lastname, email) VALUES (?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE password=VALUES(password), organization=VALUES(organization), firstname=VALUES(firstname), lastname=VALUES(lastname), email=VALUES(email)",
				user.username, user.password, user.organization, user.firstName, user.lastName, user.eMail );
		return false;
	}

	public static int getUserIdByName( String username )
	{
		DbUser user = MySQL
				.findUniqueOrNull(
						DbUser.class,
						"SELECT user.userid, user.username, user.password, user.organization, user.firstname, user.lastname, user.email, satellite.address FROM user"
								+ " LEFT JOIN satellite USING (organization)"
								+ " WHERE user.username = ? LIMIT 1", username );
		if ( user == null )
			return 0;
		return user.userId;
	}

	public static String getUserNameById( int id )
	{
		DbUser user = MySQL
				.findUniqueOrNull(
						DbUser.class,
						"SELECT user.userid, user.username, user.password, user.organization, user.firstname, user.lastname, user.email, satellite.address FROM user"
								+ " LEFT JOIN satellite USING (organization)"
								+ " WHERE user.userid = ? LIMIT 1", id );
		if ( user == null )
			return "";
		return user.username;
	}

}