/**
    * This file Copyright (c) 2003-2010 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.setup.for3_5;
  
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.core.HierarchyManager;
  import info.magnolia.cms.core.NodeData;
  import info.magnolia.cms.util.NodeDataUtil;
  import info.magnolia.content2bean.Content2BeanException;
  import info.magnolia.content2bean.Content2BeanUtil;
  import info.magnolia.module.InstallContext;
  import info.magnolia.module.delta.AbstractRepositoryTask;
  import info.magnolia.module.delta.BootstrapResourcesTask;
  import info.magnolia.module.delta.NodeExistsDelegateTask;
  import info.magnolia.module.delta.TaskExecutionException;
  
  import javax.jcr.RepositoryException;
  import java.util.Collection;
  import java.util.Iterator;
  
  /**
   *
   * @author gjoseph
   * @version $Revision: $ ($Author: $)
   */
  public class UpdateI18nConfiguration extends NodeExistsDelegateTask {
      private static final String I18N_NODEPATH = "/server/i18n";
      private static final String I18N_SYSTEM_NODEPATH = I18N_NODEPATH + "/system";
  
      public UpdateI18nConfiguration() {
          super("I18N configuration", "The I18N configuration has changed considerably in Magnolia 3.5. Will update the existing configuration or bootstrap a new one.",
                  "config", I18N_NODEPATH, new UpdateFrom30(), new BootstrapI18nConfig());
      }
  
      final static class BootstrapI18nConfig extends BootstrapResourcesTask {
          BootstrapI18nConfig() {
              super(null, null);
          }
  
          protected String[] getResourcesToBootstrap(final InstallContext installContext) {
              return new String[]{
                      "/mgnl-bootstrap/core/config.server.i18n.content.xml",
                      "/mgnl-bootstrap/core/config.server.i18n.system.xml"
              };
          }
      }
  
      static class UpdateFrom30 extends AbstractRepositoryTask {
          UpdateFrom30() {
              super(null, null);
          }
  
          protected void doExecute(InstallContext ctx) throws RepositoryException, TaskExecutionException {
              final HierarchyManager configHM = ctx.getConfigHierarchyManager();
  
              // get existing values and remove node
              final Content i18nNode = configHM.getContent(I18N_NODEPATH);
              final String defaultLangIn30 = i18nNode.getNodeData("language").getString();
              final Content availLangsNode = i18nNode.getContent("availableLanguages");
              final Collection availLangsIn30;
              try {
                  availLangsIn30 = Content2BeanUtil.toMap(availLangsNode, false).values();
              } catch (Content2BeanException e) {
                  throw new TaskExecutionException("Couldn't read availableLanguages", e);
              }
              i18nNode.delete();
  
              // bootstrap new defaults
             doBootstrap(ctx);
 
             // adapt with previously existing values
             final Content newI18nSystemNode = configHM.getContent(I18N_SYSTEM_NODEPATH);
             final NodeData sysFallbackLang = newI18nSystemNode.getNodeData("fallbackLanguage");
             sysFallbackLang.setValue(defaultLangIn30);
 
             final Collection languages = newI18nSystemNode.getContent("languages").getChildren();
             final Iterator it = languages.iterator();
             while (it.hasNext()) {
                 final Content langNode = (Content) it.next();
                 if (!availLangsIn30.contains(langNode.getName())) {
                     final NodeData enabledProperty = NodeDataUtil.getOrCreate(langNode, "enabled");
                     enabledProperty.setValue(false);
                 }
             }
         }
 
         protected void doBootstrap(InstallContext ctx) throws TaskExecutionException {
             new BootstrapI18nConfig().execute(ctx);
         }
     }
 }