/*

 * 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("VAL1_SKIP_SPECIFY_TO_START_SOLVE", new Integer(

                IUserSettings.VAL1_SKIP_SPECIFY_TO_START_SOLVE));

        m.put("VAL1_POP_CALCHEAD_WITH_DESCRIPTIONS", new Integer(

                IUserSettings.VAL1_POP_CALCHEAD_WITH_DESCRIPTIONS));

        m.put("VAL2_FORMULAE_ONLY", new Integer(

                IUserSettings.VAL2_FORMULAE_ONLY));

        m.put("VAL2_FORMULA_TACTIC_FORMULA_", new Integer(

                IUserSettings.VAL2_FORMULA_TACTIC_FORMULA_));

        //m.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.");

        }

    }

}