/*

  * Created on Feb 22, 2005

  *

  * @author Alan Krempler

  */

 package isac.util.users;

 import java.io.FileInputStream;

 import java.io.FileNotFoundException;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.util.Enumeration;

 import java.util.HashMap;

 import java.util.Map;

 import java.util.Properties;

 /**

  * Class for storing/retrieving user settings, i.e. settings which can be set

  * manually by the user as opposed to the

  * {@link isac.util.usersettings.UserModel#}, which is an abstraction of the

  * system's expeience with a user and canot be altered manually. As there is no

  * fixed set of user settings, you can regard this class as a simple storage

  * backend for key/value pairs.

  * 

  * @author Alan Krempler

  *  

  */

 public class UserSettings extends Properties implements IUserSettings {

 	private HashMap storage_;

 	String userpath_;

 	String username_;

 	public static Map valstr_valint_;

 	/**

 	 * connect the String-representation of a UserSettings-value

 	 * with the respective Integer-representation

 	 * 

 	 * @see isac.uti.users.IUserSettings

 	 */

 	private HashMap createValstrValint() {

 		HashMap m = new HashMap();

 		m.put("DUMMY", new Integer(IUserSettings.DUMMY));

 		m.put("RESULT_WITH_LONG_CALCULATION", new Integer(

 				IUserSettings.RESULT_WITH_LONG_CALCULATION));

 		m.put("FORMULAE_ONLY", new Integer(IUserSettings.FORMULAE_ONLY));

 		m.put("SKIP_SPECIFY_START_SOLVE", new Integer(

 				IUserSettings.SKIP_SPECIFY_START_SOLVE));

 		m.put("FORMULA_TACTIC_FORMULA_", new Integer(

 				IUserSettings.FORMULA_TACTIC_FORMULA_));

 		m.put("POP_CALCHEAD_WITH_DESCRIPTIONS", new Integer(

 				IUserSettings.POP_CALCHEAD_WITH_DESCRIPTIONS));

 		//valstr_valint_.put("",

 		//		new Integer(IUserSettings.));

 		return m;

 	}

 	public UserSettings(String userpath, String username) {

 		userpath_ = userpath;

 		username_ = username;

 		//load Properties (keystr, valstr) temporarily

 		Properties keystr_valstr = new Properties();

 		String filename = userpath_ + username + "_settings.txt";

 		try {

 			FileInputStream propInFile = new FileInputStream(filename);

 			keystr_valstr.load(propInFile);

 			keystr_valstr.list(System.out);

 		} catch (FileNotFoundException e) {

 			System.err.println("Can?t find " + filename);

 		} catch (IOException e) {

 			System.err.println("I/O failed.");

 		}

 		//create HashMap (valstr, valint) temporarily

 		HashMap valstr_valint = new HashMap();

 		valstr_valint = this.createValstrValint();

 		//create HashMap (keystr, \\valstr\\ valint) and store it

 		storage_ = new HashMap();

 		Enumeration keystrs = keystr_valstr.propertyNames();//WN050311 how

 															// better ?

 		String keystr = null;

 		String valstr = null;

 		Object valint = null;

 		while (keystrs.hasMoreElements()) {

 			keystr = (String) keystrs.nextElement();

 			valstr = keystr_valstr.getProperty(keystr);

 			valint = valstr_valint.get(valstr);

 			storage_.put(keystr, valint);

 		}

 	}

 	/**

 	 * @param key

 	 *            A string key

 	 * @return The string value associated with the key parameter; null, if

 	 *         nothing is stored under this key

 	 */

 	public int getValue(String key) {

 		return ((Integer) storage_.get(key)).intValue();

 	}

 	/**

 	 * @param key

 	 *            The key under which "value" is to be stored. Existing data

 	 *            unde the same key will be replaced.

 	 * @param value

 	 *            The value to be stored under "key"

 	 * @return true in case of success, false in case of error, for example if

 	 *         trying to replace stored values without proper permissions

 	 */

 	public boolean setValue(String key, int value) {

 		//TODO.WN050311 storage_.put(key, value);

 		return true;

 	}

 	//WN050311 just for creation of the first file

 	//beware of the fix path !

 	public static void main(String[] args) {

 		UserSettings s = new UserSettings("isac/xmldata/users/", "x");

 		s.setProperty("start_worksheet", "SKIP_SPECIFY_START_SOLVE");

 		s.setProperty("enter_specify", "SKIP_SPECIFY_START_SOLVE");

 		s.setProperty("next_button", "FORMULAE_ONLY");

 		String filename = "isac/xmldata/users/x_settings.txt";

 		try {

 			FileOutputStream propOutFile = new FileOutputStream(filename);

 			s.store(propOutFile, "static dialog data of user 'x'");

 		} catch (IOException e) {

 			System.err.println("I/O failed.");

 		}

 	}

 }