/**********************************************************************
 * Copyright (c) 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 �*
 * Contributors:
 *    IBM - Initial API and implementation
 **********************************************************************/
package net.sourceforge.phpeclipse.wiki.internal;

import net.sourceforge.phpeclipse.wiki.editor.WikiEditorPlugin;
import net.sourceforge.phpeclipse.wiki.preferences.UserValidationDialog;
import net.sourceforge.phpeclipse.wiki.preferences.Util;

import org.eclipse.swt.widgets.Shell;

/**
 *  
 */
public class Configuration implements IConfiguration, Comparable {
  private static final String MEMENTO_ID = "id";

  private static final String MEMENTO_NAME = "name";

  private static final String MEMENTO_USER = "user";

  private static final String MEMENTO_URL = "url";

  private static final String MEMENTO_PASSWORD = "password";

  private static final String MEMENTO_TYPE_ID = "type-id";

  protected String fId = "";

  protected String fName = "";

  protected String fUrl = "";

  protected String fPassword = "";

  protected String fUser = "";

  protected String fType = "";

  private static final char[] SCRAMBLING_TABLE=new char[] {
  	0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
  	16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
  	114,120,53,79,96,109,72,108,70,64,76,67,116,74,68,87,
  	111,52,75,119,49,34,82,81,95,65,112,86,118,110,122,105,
  	41,57,83,43,46,102,40,89,38,103,45,50,42,123,91,35,
  	125,55,54,66,124,126,59,47,92,71,115,78,88,107,106,56,
  	36,121,117,104,101,100,69,73,99,63,94,93,39,37,61,48,
  	58,113,32,90,44,98,60,51,33,97,62,77,84,80,85,223,
  	225,216,187,166,229,189,222,188,141,249,148,200,184,136,248,190,
  	199,170,181,204,138,232,218,183,255,234,220,247,213,203,226,193,
  	174,172,228,252,217,201,131,230,197,211,145,238,161,179,160,212,
  	207,221,254,173,202,146,224,151,140,196,205,130,135,133,143,246,
  	192,159,244,239,185,168,215,144,139,165,180,157,147,186,214,176,
  	227,231,219,169,175,156,206,198,129,164,150,210,154,177,134,127,
  	182,128,158,208,162,132,167,209,149,241,153,251,237,236,171,195,
  	243,233,253,240,194,250,191,155,142,137,245,235,163,242,178,152
  	};
  public Configuration() {
    this(WikiEditorPlugin.HTTP_QUERY); // default type
  }

  public Configuration(String type) {
    this.fType = type;
  }

  public String getId() {
    return fId;
  }

  public String getName() {
    return fName;
  }

  public String getURL() {
    return fUrl;
  }

  public String getPassword() {
    return fPassword;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.monitor.internal.IConfiguration#getLocalPort()
   */
  public String getUser() {
    return fUser;
  }

  /**
   */
  public String getType() {
    return fType;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.monitor.internal.IConfiguration#isRunning()
   */
  public boolean isActive() {
    return ConfigurationManager.getInstance().isActive(this);
  }

  public void delete() {
    ConfigurationManager.getInstance().removeConfiguration(this);
  }

  public boolean isWorkingCopy() {
    return false;
  }

  public IConfigurationWorkingCopy getWorkingCopy() {
    return new ConfigurationWorkingCopy(this);
  }

  protected void setInternal(IConfiguration monitor) {
    fId = monitor.getId();
    fName = monitor.getName();
    fUrl = monitor.getURL();
    fPassword = monitor.getPassword();
    fUser = monitor.getUser();
    fType = monitor.getType();
  }

  protected void save(IMemento memento) {
    memento.putString(MEMENTO_ID, fId);
    memento.putString(MEMENTO_NAME, fName);
    memento.putString(MEMENTO_TYPE_ID, fType);
    memento.putString(MEMENTO_USER, fUser);
    memento.putString(MEMENTO_URL, fUrl);
    String result = 'A'+scramblePassword(fPassword);
    memento.putString(MEMENTO_PASSWORD, result);
  }

  protected void load(IMemento memento) {
    fId = memento.getString(MEMENTO_ID);
    if (fId == null) {
      fId = "";
    }
    fName = memento.getString(MEMENTO_NAME);
    if (fName == null) {
      fName = "";
    }
    fType = memento.getString(MEMENTO_TYPE_ID);
    if (fType == null) {
      fType = "";
    }
    fUser = memento.getString(MEMENTO_USER);
    if (fUser == null) {
      fUser = "";
    }
    fUrl = memento.getString(MEMENTO_URL);
    if (fUrl == null) {
      fUrl = "";
    }
    String result = memento.getString(MEMENTO_PASSWORD);
    
    if (result == null) {
      fPassword = "";
    } else {
      fPassword = scramblePassword(result.substring(1));
    }
  }

  /*
   * (non-Javadoc)
   * 
   * @see java.lang.Object#toString()
   */
  public String toString() {
    StringBuffer buffer = new StringBuffer();
    buffer.append(fName);
    buffer.append(" - ");
    buffer.append(fUser);
    buffer.append(" - ");
    buffer.append(fUrl);
    buffer.append(" - ");
    buffer.append(fType);
    return buffer.toString();
  }

  /*
   * (non-Javadoc)
   * 
   * @see java.lang.Comparable#compareTo(java.lang.Object)
   */
  public int compareTo(Object o) {
    if (o instanceof IConfiguration) {
      return fName.compareTo(((IConfiguration) o).getName());
    }
    return 1;
  }

  private static String scramblePassword(String password)  {
    int length = password.length();
    char[] out = new char[length];
    for (int i = 0; i < length; i++) {
      char value = password.charAt(i);
      out[i] = SCRAMBLING_TABLE[value];
    }
    return new String(out);
  }

  public boolean isUserComplete() {
    if (fUser==null || fUser.equals("")) {
      return false;
    }
    if (fPassword==null || fPassword.equals("")) {
      return false;
    }
    return true;
  }
  /**
   * Asks the user to enter a password. Places the results in the supplied string[]. 
   * result[0] must contain the username, 
   * result[1] must contain the fPassword. 
   * If the user canceled, both values must be zero.
   * 
   * @param location
   *          the location to obtain the fPassword for
   * @param username
   *          the username
   * @param message
   *          a message to display to the fUser
   * @param userMutable
   *          whether the fUser can be changed in the dialog
   * @param result
   *          a String array of length two in which to put the result
   */
  public boolean promptForPassword(final String username, final String message, final boolean userMutable, final String[] result) {
    if (isUserComplete()) {
      result[0] = fUser; 
      result[1] = fPassword;
      return true;
    }
    result[0] = null;
    result[1] = null;
    Shell shell = Util.findShell();
    if (shell == null) {
      return false;
    }
    UserValidationDialog dialog = new UserValidationDialog(shell, fUrl, (username == null) ? "" : username, message);//$NON-NLS-1$
    dialog.setUsernameMutable(userMutable);
    dialog.open(); 
    result[0] = dialog.getUsername();
    result[1] = dialog.getPassword();
    if (dialog.getAllowCaching()) {
      fUser = result[0];
      fPassword = result[1];
    }
    return dialog.getAllowCaching();
  }
}