//    Openbravo POS is a point of sales application designed for touch screens.
//    Copyright (C) 2007-2009 Openbravo, S.L.
//    http://www.openbravo.com/product/pos
//
//    This file is part of Openbravo POS.
//
//    Openbravo POS is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    Openbravo POS is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Openbravo POS.  If not, see <http://www.gnu.org/licenses/>.

package com.openbravo.pos.forms;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import com.openbravo.basic.BasicException;
import com.openbravo.data.loader.Session;
import com.openbravo.pos.util.AltEncrypter;

/**
 *
 * @author adrianromero
 */
public class AppViewConnection {
    
    /** Creates a new instance of AppViewConnection */
    private AppViewConnection() {
    }
    
    public static Session createSession(AppProperties props) throws BasicException {
               
        try{

            // register the database driver
            if (isJavaWebStart()) {
                Class.forName(props.getProperty("db.driver"), true, Thread.currentThread().getContextClassLoader());
            } else {
                ClassLoader cloader = new URLClassLoader(new URL[] {new File(props.getProperty("db.driverlib")).toURI().toURL()});
                DriverManager.registerDriver(new DriverWrapper((Driver) Class.forName(props.getProperty("db.driver"), true, cloader).newInstance()));
            }

            String sDBUser = props.getProperty("db.user");
            String sDBPassword = props.getProperty("db.password");        
            if (sDBUser != null && sDBPassword != null && sDBPassword.startsWith("crypt:")) {
                // the password is encrypted
                AltEncrypter cypher = new AltEncrypter("cypherkey" + sDBUser);
                sDBPassword = cypher.decrypt(sDBPassword.substring(6));
            }   

             return new Session(props.getProperty("db.URL"), sDBUser,sDBPassword);     

        } catch (InstantiationException e) {
            throw new BasicException(AppLocal.getIntString("message.databasedrivererror"), e);
        } catch (IllegalAccessException eIA) {
            throw new BasicException(AppLocal.getIntString("message.databasedrivererror"), eIA);
        } catch (MalformedURLException eMURL) {
            throw new BasicException(AppLocal.getIntString("message.databasedrivererror"), eMURL);
        } catch (ClassNotFoundException eCNF) {
            throw new BasicException(AppLocal.getIntString("message.databasedrivererror"), eCNF);
        } catch (SQLException eSQL) {
            throw new BasicException(AppLocal.getIntString("message.databaseconnectionerror"), eSQL);
        }   
    }

    private static boolean isJavaWebStart() {

        try {
            Class.forName("javax.jnlp.ServiceManager");
            return true;
        } catch (ClassNotFoundException ue) {
            return false;
        }
    }
}