/**
 * Copyright (c) 2003-2005 Craig Setera
 * All Rights Reserved.
 * Licensed under the Eclipse Public License - v 1.0
 * For more information see http://www.eclipse.org/legal/epl-v10.html
 */
package eclipseme.ui.internal.actions;

import java.io.File;
import java.util.Iterator;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Preferences;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;

import eclipseme.core.IEclipseMECoreConstants;
import eclipseme.core.internal.EclipseMECorePlugin;
import eclipseme.core.internal.tools.AntennaBuildExporter;
import eclipseme.core.model.IMidletSuiteProject;
import eclipseme.core.model.MidletSuiteFactory;
import eclipseme.ui.internal.preferences.J2MEPreferencePage;
import eclipseme.ui.internal.utils.LogAndDisplaySafeRunnable;

/**
 * Action delegate implementation that provides a means for the user
 * to create Ant build files for Antenna.
 * <p />
 * Copyright (c) 2003-2005 Craig Setera<br>
 * All Rights Reserved.<br>
 * Licensed under the Eclipse Public License - v 1.0<p/>
 * <br>
 * $Revision: 1.6 $
 * <br>
 * $Date: 2006/02/16 23:55:43 $
 * <br>
 * @author Craig Setera
 */
public class AntennaBuildExportAction extends AbstractJavaProjectAction {

	/**
	 * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
	 */
	public void run(IAction action) {
		if ((selection != null) && !selection.isEmpty()) {
			if (configurationIsValid()) {
				// Setup the progress monitoring
				ProgressMonitorDialog dialog = 
					new ProgressMonitorDialog(workbenchPart.getSite().getShell());
				dialog.open();
				
				final IProgressMonitor monitor = dialog.getProgressMonitor();
				monitor.beginTask("Export Antenna Build Files", 3);
				
				// Create the packages
				Iterator iter = selection.iterator();
				IMidletSuiteProject suite = getMidletSuite(iter.next());
				if (suite != null) {
					final AntennaBuildExporter exporter = new AntennaBuildExporter(suite);
					Platform.run(new LogAndDisplaySafeRunnable(
							workbenchPart.getSite().getShell(),
							"export") 
					{
						public void run() throws Exception {
							exporter.doExport(monitor);
						}
					});
				}
				
				// All done
				monitor.done();
				dialog.close();
			} else {
				warnUserAboutConfigurationError();
			}
		}
	}

	/**
	 * Return a boolean indicating whether or not the configuration is valid
	 * for this operation.
	 * 
	 * @return
	 */
	private boolean configurationIsValid() {
		// A simplistic view of whether or not this is a valid configuration
		Preferences prefs =	EclipseMECorePlugin.getDefault().getPluginPreferences();
		
		File antennaJar = new File(prefs.getString(IEclipseMECoreConstants.PREF_ANTENNA_JAR));
		File wtkRoot = new File(prefs.getString(IEclipseMECoreConstants.PREF_WTK_ROOT));
		
		return 
			antennaJar.exists() && antennaJar.isFile() &&
			wtkRoot.exists() && wtkRoot.isDirectory();
	}

	/**
	 * Return the midlet suite project associated with the
	 * selected object.
	 * 
	 * @param selected
	 * @return
	 */
	private IMidletSuiteProject getMidletSuite(Object selected) {
		IMidletSuiteProject suite = null;
		
		IJavaProject project = getJavaProject(selected);
		if (project != null) {
			suite = MidletSuiteFactory.getMidletSuiteProject(project);
		}
		
		return suite;
	}

	/**
	 * Warn the user about the antenna configuration errors.  Allow
	 * the user to open the configuration.
	 */
	private void warnUserAboutConfigurationError() {
		String message = 
			"Antenna preferences are not correctly configured.\n" +
			"Please configure Antenna preferences."; 

		ConfigurationErrorDialog dialog = new ConfigurationErrorDialog(
			getShell(),
			J2MEPreferencePage.ID,
			"Antenna Export Error",
			message,
			"Configure Antenna Preferences...");
		
		dialog.open();
	}
}