/*
    Dateiverwaltung - File management in your browser
    Copyright (C) 2017 Ulrich Hilger, http://uhilger.de

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as
    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package de.uhilger.wbx;

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

/**
 *
 */
public class WbxUtils {
  
  private static final Logger logger = Logger.getLogger(WbxUtils.class.getName());
  
  public static final String JNDI_CTX_NAME = "java:comp/env";
  
  public static final String NOT_FOUND = " nicht gefunden";
  public static final String NO_STRING = " ist kein String";  
  public static final String EMPTY_STRING = "";

  public int getJNDIInt(String paramName, int defaultVal) {
    String jndiStr = getJNDIParameter(paramName, Integer.toString(defaultVal));
    try {
      return Integer.parseInt(jndiStr);
    } catch(NumberFormatException ex) {
      logger.log(Level.FINE, ex.getMessage());
      return defaultVal;
    }
  }
  
  public String getJNDIParameter(String pname, String defaultVal) {
    try {
      // unseren environment naming context ermitteln
      Context initCtx = new InitialContext();
      Context envCtx = (Context) initCtx.lookup(JNDI_CTX_NAME);
      
      // unseren Parameter lesen
      Object o = envCtx.lookup(pname);
      if(o instanceof String) {
        return o.toString();      
      } else {
        return defaultVal;
      }
    } catch (NamingException ex) {
      logger.log(Level.FINE, ex.getMessage());
      return defaultVal;
    }
  }  
}