/*
    * 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 org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
  import org.argeo.slc.client.ui.dist.DistPlugin;
  import org.argeo.slc.client.ui.dist.utils.CommandHelpers;
  import org.argeo.slc.repo.JavaRepoManager;
  import org.eclipse.core.commands.AbstractHandler;
  import org.eclipse.core.commands.ExecutionEvent;
  import org.eclipse.core.commands.ExecutionException;
  import org.eclipse.jface.dialogs.Dialog;
  import org.eclipse.jface.dialogs.InputDialog;
  import org.eclipse.jface.resource.ImageDescriptor;
  import org.eclipse.ui.handlers.HandlerUtil;
  
  /** Create a new empty workspace in the default local java repository */
  public class CreateLocalJavaWorkspace extends AbstractHandler {
  	private static final Log log = LogFactory
  			.getLog(CreateLocalJavaWorkspace.class);
  
  	// Exposes commands meta-info
  	public final static String ID = DistPlugin.PLUGIN_ID
  			+ ".createLocalJavaWorkspace";
  	public final static String DEFAULT_LABEL = "Create local Java workspace...";
  	public final static ImageDescriptor DEFAULT_ICON = DistPlugin
  			.getImageDescriptor("icons/addItem.gif");
  
  	// Parameters
  	public final static String PARAM_WORKSPACE_PREFIX = "workspacePrefix";
  
  	/* DEPENDENCY INJECTION */
  	private JavaRepoManager javaRepoManager;
  
  	public Object execute(ExecutionEvent event) throws ExecutionException {
  
  		String prefix = event.getParameter(PARAM_WORKSPACE_PREFIX);
  		// TODO : add an input validator
  		InputDialog inputDialog = new InputDialog(HandlerUtil
  				.getActiveWorkbenchWindow(event).getShell(), "Workspace name?",
  				"Choose a name for the workspace to create",
  				prefix == null ? "" : prefix + "-", null);
  		int result = inputDialog.open();
  
  		String enteredName = inputDialog.getValue();
  		final String legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXZY0123456789_";
  		char[] arr = enteredName.toUpperCase().toCharArray();
  		int count = 0;
  		for (int i = 0; i < arr.length; i++) {
  			if (legalChars.indexOf(arr[i]) == -1)
  				count = count + 7;
  			else
  				count++;
  		}
  
  		if (count > 60) {
  			ErrorFeedback.show("Workspace name '" + enteredName
  					+ "' is too long or contains"
  					+ " too many special characters such as '.' or '-'.");
  			return null;
  		}
  
  		String workspaceName = enteredName;
  		// Canceled by user
  		if (result == Dialog.CANCEL || workspaceName == null
  				|| "".equals(workspaceName.trim()))
  			return null;
  
  		// FIXME will throw an exception if this workspace name is already used.
  		javaRepoManager.createWorkspace(workspaceName);
  
  		CommandHelpers.callCommand(RefreshDistributionsView.ID);
  		if (log.isTraceEnabled())
  			log.trace("WORKSPACE " + workspaceName + " CREATED");
  
  		return null;
  	}
  
  	/* DEPENDENCY INJECTION */
  	public void setJavaRepoManager(JavaRepoManager javaRepoManager) {
  		this.javaRepoManager = javaRepoManager;
  	}
  }