/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *         http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.argeo.slc.client.ui.dist.commands;
  
  import javax.jcr.Node;
  import javax.jcr.Repository;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  
  import org.argeo.cms.ArgeoNames;
  import org.argeo.jcr.JcrUtils;
  import org.argeo.slc.SlcException;
  import org.argeo.slc.client.ui.dist.DistPlugin;
  import org.argeo.slc.client.ui.dist.editors.DistWkspEditorInput;
  import org.argeo.slc.client.ui.dist.editors.DistWorkspaceEditor;
  import org.eclipse.core.commands.AbstractHandler;
  import org.eclipse.core.commands.ExecutionEvent;
  import org.eclipse.core.commands.ExecutionException;
  import org.eclipse.jface.resource.ImageDescriptor;
  import org.eclipse.ui.PartInitException;
  import org.eclipse.ui.handlers.HandlerUtil;
  
  /**
   * Open a distribution workspace editor for a given workspace in a repository
   */
  public class OpenWorkspaceEditor extends AbstractHandler {
  	public final static String ID = DistPlugin.PLUGIN_ID
  			+ ".openWorkspaceEditor";
  	public final static String DEFAULT_LABEL = "Open editor";
  	public final static ImageDescriptor DEFAULT_ICON = DistPlugin
  			.getImageDescriptor("icons/distribution_perspective.gif");
  
  	// Use local node repo and repository factory to retrieve and log to
  	// relevant repository
  	public final static String PARAM_REPO_NODE_PATH = "param.repoNodePath";
  	// Use URI and repository factory to retrieve and ANONYMOUSLY log in
  	// relevant repository
  	public final static String PARAM_REPO_URI = "param.repoUri";
  	public final static String PARAM_WORKSPACE_NAME = "param.workspaceName";
  
  	/* DEPENDENCY INJECTION */
  	private Repository localRepository;
  
  	public Object execute(ExecutionEvent event) throws ExecutionException {
  		String repoNodePath = event.getParameter(PARAM_REPO_NODE_PATH);
  		String repoUri = event.getParameter(PARAM_REPO_URI);
  		String workspaceName = event.getParameter(PARAM_WORKSPACE_NAME);
  
  		Session defaultSession = null;
  		if (repoNodePath != null && repoUri == null) {
  			try {
  				defaultSession = localRepository.login();
  				if (defaultSession.nodeExists(repoNodePath)) {
  					Node repoNode = defaultSession.getNode(repoNodePath);
  					repoUri = repoNode.getProperty(ArgeoNames.ARGEO_URI)
  							.getString();
  				}
  			} catch (RepositoryException e) {
  				throw new SlcException("Unexpected error while "
  						+ "getting repoNode at path " + repoNodePath, e);
  			} finally {
  				JcrUtils.logoutQuietly(defaultSession);
  			}
  		}
  
  		DistWkspEditorInput wei = new DistWkspEditorInput(repoNodePath,
  				repoUri, workspaceName);
  		try {
  			HandlerUtil.getActiveWorkbenchWindow(event).getActivePage()
  					.openEditor(wei, DistWorkspaceEditor.ID);
  		} catch (PartInitException e) {
  			throw new SlcException("Unexpected error while "
  					+ "opening editor for workspace " + workspaceName
  					+ " with URI " + repoUri + " and repoNode at path "
  					+ repoNodePath, e);
  		}
  		return null;
  	}
  
  	/* DEPENDENCY INJECTION */
  	public void setLocalRepository(Repository localRepository) {
  		this.localRepository = localRepository;
  	}
  }