/*
    * 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.RepositoryException;
  import javax.jcr.Session;
  
  import org.argeo.jcr.JcrUtils;
  import org.argeo.slc.SlcException;
  import org.argeo.slc.SlcTypes;
  import org.argeo.slc.client.ui.dist.DistPlugin;
  import org.argeo.slc.client.ui.dist.editors.ArtifactVersionEditor;
  import org.argeo.slc.client.ui.dist.editors.ModularDistVersionEditor;
  import org.argeo.slc.client.ui.dist.editors.ModuleEditorInput;
  import org.argeo.slc.repo.RepoService;
  import org.eclipse.core.commands.AbstractHandler;
  import org.eclipse.core.commands.ExecutionEvent;
  import org.eclipse.core.commands.ExecutionException;
  import org.eclipse.ui.PartInitException;
  import org.eclipse.ui.handlers.HandlerUtil;
  
  /**
   * Open the relevant editor for a given module node of a given repository
   * workspace. For the time being, modules can be artifacts or
   * modularDistributions
   */
  public class OpenModuleEditor extends AbstractHandler {
  	public final static String ID = DistPlugin.PLUGIN_ID + ".openModuleEditor";
  	public final static String DEFAULT_LABEL = "Open relevant editor";
  
  	// 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";
  	public final static String PARAM_MODULE_PATH = "param.modulePath";
  
  	/* DEPENDENCY INJECTION */
  	private RepoService repoService;
  
  	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);
  		String modulePath = event.getParameter(PARAM_MODULE_PATH);
  
  		Session businessSession = null;
  		try {
  			businessSession = repoService.getRemoteSession(repoNodePath,
  					repoUri, workspaceName);
  
  			Node module = businessSession.getNode(modulePath);
  			ModuleEditorInput mei = new ModuleEditorInput(repoNodePath,
  					repoUri, workspaceName, modulePath);
  
  			// Choose correct editor based on its mixin
  			if (module.isNodeType(SlcTypes.SLC_MODULAR_DISTRIBUTION))
  				HandlerUtil.getActiveWorkbenchWindow(event).getActivePage()
  						.openEditor(mei, ModularDistVersionEditor.ID);
  			else
  				HandlerUtil.getActiveWorkbenchWindow(event).getActivePage()
  						.openEditor(mei, ArtifactVersionEditor.ID);
  		} catch (RepositoryException e) {
  			throw new SlcException("Unexpected error while "
  					+ "getting repoNode info for repoNode at path "
  					+ repoNodePath, e);
  		} catch (PartInitException e) {
  			throw new SlcException("Unexpected error while "
  					+ "opening editor for workspace " + workspaceName
  					+ " with URI " + repoUri + " and repoNode at path "
  					+ repoNodePath, e);
  		} finally {
  			JcrUtils.logoutQuietly(businessSession);
  		}
  		return null;
  	}
  
  	/* DEPENDENCY INJECTION */
  	public void setRepoService(RepoService repoService) {
  		this.repoService = repoService;
  	}
  }