/*
 *  SSHTools - Java SSH2 API
 *
 *  Copyright (C) 2002-2003 Lee David Painter and Contributors.
 *
 *  Contributions made by:
 *
 *  Brett Smith
 *  Richard Pernavas
 *  Erwin Bolwidt
 *
 *  This program 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 2
 *  of the License, or (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package com.sshtools.common.ui;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.awt.Rectangle;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import java.util.Properties;
import java.util.StringTokenizer;

import javax.swing.JTable;


/**
 *
 *
 * @author $author$
 * @version $Revision: 1.16 $
 */
public class PreferencesStore {
    /**  */
    protected static Log log = LogFactory.getLog(PreferencesStore.class);

    //
    private static File file;
    private static boolean storeAvailable;
    private static Properties preferences;

    //  Intialise the preferences
    static {
        preferences = new Properties();
    }

    /**
*
*
* @param table
* @param pref
*/
    public static void saveTableMetrics(JTable table, String pref) {
        for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) {
            int w = table.getColumnModel().getColumn(i).getWidth();
            put(pref + ".column." + i + ".width", String.valueOf(w));
            put(pref + ".column." + i + ".position",
                String.valueOf(table.convertColumnIndexToModel(i)));
        }
    }

    /**
*
*
* @param table
* @param pref
* @param defaultWidths
*
* @throws IllegalArgumentException
*/
    public static void restoreTableMetrics(JTable table, String pref,
        int[] defaultWidths) {
        //  Check the table columns may be resized correctly
        if (table.getAutoResizeMode() != JTable.AUTO_RESIZE_OFF) {
            throw new IllegalArgumentException(
                "Table AutoResizeMode must be JTable.AUTO_RESIZE_OFF");
        }

        //  Restore the table column widths and positions
        for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) {
            try {
                table.moveColumn(table.convertColumnIndexToView(getInt(pref +
                            ".column." + i + ".position", i)), i);
                table.getColumnModel().getColumn(i).setPreferredWidth(getInt(pref +
                        ".column." + i + ".width",
                        (defaultWidths == null)
                        ? table.getColumnModel().getColumn(i).getPreferredWidth()
                        : defaultWidths[i]));
            } catch (NumberFormatException nfe) {
            }
        }
    }

    /**
*
*
* @return
*/
    public static boolean isStoreAvailable() {
        return storeAvailable;
    }

    /**
*
*
* @param file
*/
    public static void init(File file) {
        PreferencesStore.file = file;

        //  Make sure the preferences directory exists, creating it if it doesn't
        File dir = file.getParentFile();

        if (!dir.exists()) {
            log.info("Creating SSHTerm preferences directory " +
                dir.getAbsolutePath());

            if (!dir.mkdirs()) {
                log.error("Preferences directory " + dir.getAbsolutePath() +
                    " could not be created. " +
                    "Preferences will not be stored");
            }
        }

        storeAvailable = dir.exists();

        //  If the preferences file exists, then load it
        if (storeAvailable) {
            if (file.exists()) {
                InputStream in = null;

                try {
                    in = new FileInputStream(file);
                    preferences.load(in);
                    storeAvailable = true;
                } catch (IOException ioe) {
                    log.error(ioe);
                } finally {
                    if (in != null) {
                        try {
                            in.close();
                        } catch (IOException ioe) {
                        }
                    }
                }
            }
            //  Otherwise create it
            else {
                savePreferences();
            }
        } else {
            log.warn("Preferences store not available.");
        }
    }

    /**
*
*/
    public static void savePreferences() {
        if (file == null) {
            log.error(
                "Preferences not saved as PreferencesStore has not been initialise.");
        } else {
            OutputStream out = null;

            try {
                out = new FileOutputStream(file);
                preferences.store(out, "SSHTerm preferences");
                log.info("Preferences written to " + file.getAbsolutePath());
                storeAvailable = true;
            } catch (IOException ioe) {
                log.error(ioe);
            } finally {
                if (out != null) {
                    try {
                        out.close();
                    } catch (IOException ioe) {
                    }
                }
            }
        }
    }

    /**
*
*
* @param name
* @param def
*
* @return
*/
    public static String get(String name, String def) {
        return preferences.getProperty(name, def);
    }

    /**
*
*
* @param name
* @param val
*/
    public static void put(String name, String val) {
        preferences.put(name, val);
    }

    /**
*
*
* @param name
* @param def
*
* @return
*/
    public static Rectangle getRectangle(String name, Rectangle def) {
        String s = preferences.getProperty(name);

        if ((s == null) || s.equals("")) {
            return def;
        } else {
            StringTokenizer st = new StringTokenizer(s, ",");
            Rectangle r = new Rectangle();

            try {
                r.x = Integer.parseInt(st.nextToken());
                r.y = Integer.parseInt(st.nextToken());
                r.width = Integer.parseInt(st.nextToken());
                r.height = Integer.parseInt(st.nextToken());
            } catch (NumberFormatException nfe) {
                log.warn("Preference is " + name + " is badly formatted", nfe);
            }

            return r;
        }
    }

    /**
*
*
* @param name
* @param val
*/
    public static void putRectangle(String name, Rectangle val) {
        preferences.put(name,
            (val == null) ? ""
                          : (val.x + "," + val.y + "," + val.width + "," +
            val.height));
    }

    /**
*
*
* @param name
* @param def
*
* @return
*/
    public static int getInt(String name, int def) {
        String s = preferences.getProperty(name);

        if ((s != null) && !s.equals("")) {
            try {
                return Integer.parseInt(s);
            } catch (NumberFormatException nfe) {
                log.warn("Preference is " + name + " is badly formatted", nfe);
            }
        }

        return def;
    }

    /**
*
*
* @param name
* @param def
*
* @return
*/
    public static double getDouble(String name, double def) {
        String s = preferences.getProperty(name);

        if ((s != null) && !s.equals("")) {
            try {
                return Double.parseDouble(s);
            } catch (NumberFormatException nfe) {
                log.warn("Preference is " + name + " is badly formatted", nfe);
            }
        }

        return def;
    }

    /**
*
*
* @param name
* @param val
*/
    public static void putInt(String name, int val) {
        preferences.put(name, String.valueOf(val));
    }

    /**
*
*
* @param name
* @param val
*/
    public static void putDouble(String name, double val) {
        preferences.put(name, String.valueOf(val));
    }

    /**
*
*
* @param name
* @param def
*
* @return
*/
    public static boolean getBoolean(String name, boolean def) {
        return get(name, String.valueOf(def)).equals("true");
    }

    /**
*
*
* @param name
* @param val
*/
    public static void putBoolean(String name, boolean val) {
        preferences.put(name, String.valueOf(val));
    }

    /**
*
*
* @param name
*
* @return
*/
    public static boolean preferenceExists(String name) {
        return preferences.containsKey(name);
    }

    /**
*
*
* @param name
*
* @return
*/
    public static boolean removePreference(String name) {
        boolean exists = preferenceExists(name);
        preferences.remove(name);

        return exists;
    }
}