/*
 * Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
 *
 *   Portions of this software were developed by the Unidata Program at the
 *   University Corporation for Atmospheric Research.
 *
 *   Access and use of this software shall impose the following obligations
 *   and understandings on the user. The user is granted the right, without
 *   any fee or cost, to use, copy, modify, alter, enhance and distribute
 *   this software, and any derivative works thereof, and its supporting
 *   documentation for any purpose whatsoever, provided that this entire
 *   notice appears in all copies of the software, derivative works and
 *   supporting documentation.  Further, UCAR requests that the user credit
 *   UCAR/Unidata in any publications that result from the use of this
 *   software or in any product that includes this software. The names UCAR
 *   and/or Unidata, however, may not be used in any advertising or publicity
 *   to endorse or promote any products or commercial entity unless specific
 *   written permission is obtained from UCAR/Unidata. The user also
 *   understands that UCAR/Unidata is not obligated to provide the user with
 *   any support, consulting, training or assistance of any kind with regard
 *   to the use, operation and performance of this software nor to provide
 *   the user with any updates, revisions, new versions or "bug fixes."
 *
 *   THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *   DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
 *   INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 *   FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 *   NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 *   WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
 */

package thredds.servlet;

import java.util.List;
import java.util.ArrayList;
import java.util.Collections;

import thredds.util.ThreddsConfigReader;

/**
 * Read and process the threddsConfig.xml file.
 * You can access the values by calling ThreddsConfig.getXXX(name1.name2), where
 * <pre>
 *  <name1>
 *   <name2>value</name2>
 *  </name1>
 * </pre>
 */
public final class ThreddsConfig {
  private static org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger( "serverStartup" );
  private static ThreddsConfigReader reader;

  private static List<String> catalogRoots;   //catalogs not linked from main catalog
  //private static List<String> contentRootList;

  public static void init( String filename) {
    reader = new ThreddsConfigReader(filename, log);

    catalogRoots = new ArrayList<>();
    //contentRootList = new ArrayList<String>();

    for (String location : reader.getRootList("catalogRoot"))  {
      catalogRoots.add( location );
      log.info( "ThreddsConfig: adding catalogRoot = " + location);
    }

    /* for (String location : reader.getElementList("contentRoots", "contentRoot"))  {
      contentRootList.add( location );
      log.info( "ThreddsConfig: adding contentRoot [" + location + "]." );
    } */

    // viewer plug-in LOOK replace!!
    //for (String className : reader.getRootList("Viewer"))  {
    //  ViewServlet.registerViewer(className);
    //}

    // datasetSource plug-in
    for (String className : reader.getRootList("datasetSource"))  {
      DatasetHandler.registerDatasetSource(className);
    }
  }

  static public List<String> getCatalogRoots() {
    return Collections.unmodifiableList( catalogRoots);
  }

  /* public static List<String> getContentRootList() {
    return Collections.unmodifiableList( contentRootList);
  } */

  static public String get(String paramName, String defValue) {
    return reader.get(paramName, defValue);
  }

  static public boolean hasElement(String paramName) {
    return reader.hasElement(paramName);
  }

  static public boolean getBoolean(String paramName, boolean defValue) {
    return reader.getBoolean(paramName, defValue);
  }

  static public long getBytes(String paramName, long defValue) {
    return reader.getBytes(paramName, defValue);
  }

  static public int getInt(String paramName, int defValue) {
        return reader.getInt(paramName, defValue);
  }

  static public long getLong(String paramName, long defValue) {
            return reader.getLong(paramName, defValue);
  }

  static public int getSeconds(String paramName, int defValue) {
    return reader.getSeconds(paramName, defValue);
  }



}