/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.core;

import java.beans.PropertyVetoException;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

import org.openide.filesystems.*;

import org.netbeans.core.projects.SessionManager;

/** Default repository.
 */
public final class NbRepository extends Repository {
    /** name of system folder to be located in the USER_DIR and HOME_DIR */
    static final String SYSTEM_FOLDER = "config"; // NOI18N

    /**
     * Create a repository based on the normal system file system.
     */
    public NbRepository () {
        super (createDefaultFileSystem());
    }

    /** Creates defalt file system.
    */
    private static FileSystem createDefaultFileSystem () {
        String systemDir = System.getProperty("system.dir"); // NOI18N
        
        if (systemDir != null) {
            // initiliaze the filesystem for this property 

            try {
                return SessionManager.getDefault().create(new File (systemDir), null, new File[0]);
            } catch (IOException ex) {
                ex.printStackTrace();
                throw new InternalError ();
            } catch (PropertyVetoException ex) {
                ex.printStackTrace();
                throw new InternalError ();
            }
        }
        
        String homeDir = NonGui.getHomeDir ();
        if (homeDir != null) {
            // -----------------------------------------------------------------------------------------------------
            // 1. Initialization and checking of netbeans.home and netbeans.user directories

            File homeDirFile = new File (NonGui.getHomeDir ());
            File userDirFile = new File (NonGui.getUserDir ());
            if (!homeDirFile.exists ()) {
                System.err.println (NonGui.getString("CTL_Netbeanshome_notexists"));
                doExit (2);
            }
            if (!homeDirFile.isDirectory ()) {
                System.err.println (NonGui.getString("CTL_Netbeanshome1"));
                doExit (3);
            }
            if (!userDirFile.exists ()) {
                System.err.println (NonGui.getString("CTL_Netbeanshome2"));
                doExit (4);
            }
            if (!userDirFile.isDirectory ()) {
                System.err.println (NonGui.getString("CTL_Netbeanshome3"));
                doExit (5);
            }
            
            // #27151: may also be additional install dirs
            List extradirs = new ArrayList(); // List
            String nbdirs = System.getProperty("netbeans.dirs");
            if (nbdirs != null) {
                StringTokenizer tok = new StringTokenizer(nbdirs, File.pathSeparator);
                while (tok.hasMoreTokens()) {
                    File f = new File(tok.nextToken(), SYSTEM_FOLDER);
                    if (f.isDirectory()) {
                        extradirs.add(f);
                    }
                }
            }

            // -----------------------------------------------------------------------------------------------------
            // 7. Initialize FileSystems

            
            // system FS !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
            {
                Exception exc;
                try {
                    File u = new File (userDirFile, SYSTEM_FOLDER);
                    File h = new File (homeDirFile, SYSTEM_FOLDER);
                    return SessionManager.getDefault().create(u, h, (File[])extradirs.toArray(new File[extradirs.size()]));
                } catch (IOException ex) {
                    exc = ex;
                } catch (PropertyVetoException ex) {
                    exc = ex;
                }

                exc.printStackTrace ();
                Object[] arg = new Object[] {systemDir};
                System.err.println (new java.text.MessageFormat(
                    NonGui.getString("CTL_Cannot_mount_systemfs")
                ).format(arg));
                doExit (3);
            }
        }

        try {
            return SessionManager.getDefault().create(null, null, new File[0]);
        } catch (IOException ex) {
            ex.printStackTrace();
            throw new InternalError ();
        } catch (PropertyVetoException ex) {
            ex.printStackTrace();
            throw new InternalError ();
        }
    }

    
    //
    // methods that delegate to TM
    //
    
    private static void doExit (int value) {
        org.netbeans.TopSecurityManager.exit(value);
    }
    
}