/**
    * This file Copyright (c) 2020 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.resources.app.action;
  
  import info.magnolia.jcr.util.NodeNameHelper;
  import info.magnolia.jcr.util.NodeTypes;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.jcr.util.PropertyUtil;
  import info.magnolia.resourceloader.Resource;
  import info.magnolia.resourceloader.ResourceOrigin;
  import info.magnolia.resourceloader.jcr.JcrResourceOrigin;
  import info.magnolia.resources.app.data.ResourcePropertySetFactory;
  import info.magnolia.ui.CloseHandler;
  import info.magnolia.ui.ValueContext;
  import info.magnolia.ui.contentapp.Datasource;
  import info.magnolia.ui.editor.FormView;
  import info.magnolia.ui.observation.DatasourceObservation;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.charset.Charset;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.io.FilenameUtils;
  import org.apache.commons.io.IOUtils;
  
  import com.machinezoo.noexception.Exceptions;
  
  /**
   * Saves the uploaded file inside the selected folder.
   */
  public class UploadResourceAction extends AbstractAddResourceAction {
  
      private final FormView<Resource> form;
      private final NodeNameHelper nodeNameHelper;
  
      @Inject
      public UploadResourceAction(AddResourceActionDefinition definition, CloseHandler closeHandler,
                                  ValueContext<Resource> valueContext, FormView<Resource> form,
                                  Datasource<Resource> datasource,
                                  DatasourceObservation.Manual datasourceObservation,
                                  NodeNameHelper nodeNameHelper,
                                  ResourceOrigin resourceOrigin) {
          super(definition, closeHandler, valueContext, form, datasource, datasourceObservation, resourceOrigin);
          this.form = form;
          this.nodeNameHelper = nodeNameHelper;
      }
  
      @Override
      protected void addResource(Resource parent,  Node rootNode) {
          try {
              File uploadedResource = form.<File>getPropertyValue(ResourcePropertySetFactory.CONTENT).orElseThrow(RuntimeException::new);
              Node parentNode = NodeUtil.createPath(rootNode, parent.getPath(), NodeTypes.Folder.NAME);
              String uploadedResourceName = getUniqueResourceName(uploadedResource, parentNode);
  
              Node childNode = NodeUtil.createPath(parentNode, uploadedResourceName, NodeTypes.Content.NAME);
  
              try (InputStream stream = FileUtils.openInputStream(uploadedResource)) {
                  if (isTextMediaType(uploadedResourceName)) {
                      PropertyUtil.setProperty(childNode, JcrResourceOrigin.TEXT_PROPERTY, IOUtils.toString(stream, Charset.defaultCharset()));
                  } else {
                      Node childNodeBinary = NodeUtil.createPath(childNode, JcrResourceOrigin.BINARY_NODE_NAME, NodeTypes.Resource.NAME);
                      createBinary(childNodeBinary, uploadedResource);
                 }
             }
             NodeTypes.LastModified.update(childNode);
             childNode.getSession().save();
         } catch (RepositoryException | IOException e) {
             throw new RuntimeException(e);
         }
     }
 
     private String getUniqueResourceName(File uploadedResource, Node parentNode) {
         String uploadedResourceName = uploadedResource.getName();
         String extension = FilenameUtils.getExtension(uploadedResourceName);
 
         return Exceptions.wrap().get(() ->
                 nodeNameHelper.getUniqueName(parentNode.getSession(), parentNode.getPath(), uploadedResourceName, extension));
     }
 }