/*******************************************************************************
 * Copyright (c) 2008 Standards for Technology in Automotive Retail (STAR) and
 * others. All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     David Carver/STAR - dcarver@starstandard.org/d_a_carver@yahoo.com - bug 192568
 *            Initial API - This implements the functionality of the
 *            old Import Dialog for the XML Catalog. 
 *     
 *******************************************************************************/
package org.eclipse.wst.xml.ui.internal.wizards;

import org.eclipse.core.resources.IFile;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.IImportWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.wst.xml.core.internal.XMLCorePlugin;
import org.eclipse.wst.xml.core.internal.catalog.CatalogSet;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalog;
import org.eclipse.wst.xml.core.internal.catalog.provisional.INextCatalog;
import org.eclipse.wst.xml.ui.internal.catalog.XMLCatalogMessages;
import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImageHelper;
import org.eclipse.wst.xml.ui.internal.editor.XMLEditorPluginImages;

public class ImportXMLCatalogWizard extends Wizard implements IImportWizard {

	protected ImportXMLCatalogPage importPage = null;
	protected ICatalog workingUserCatalog = null;
	protected ICatalog userCatalog = null;
	
	public ImportXMLCatalogWizard() {
		setWindowTitle(XMLWizardsMessages._UI_DIALOG_XMLCATALOG_IMPORT_TITLE);
		ImageDescriptor descriptor = XMLEditorPluginImageHelper.getInstance().getImageDescriptor(XMLEditorPluginImages.IMG_WIZBAN_GENERATEXML);
		setDefaultPageImageDescriptor(descriptor);
		ICatalog defaultCatalog = XMLCorePlugin.getDefault().getDefaultXMLCatalog();
		INextCatalog[] nextCatalogs = defaultCatalog.getNextCatalogs();
		for (int i = 0; i < nextCatalogs.length; i++) {
			INextCatalog catalog = nextCatalogs[i];
			ICatalog referencedCatalog = catalog.getReferencedCatalog();
			if (referencedCatalog != null) {
				if (XMLCorePlugin.USER_CATALOG_ID.equals(referencedCatalog.getId())) {
					userCatalog = referencedCatalog;
				}
			}
		}

		CatalogSet tempCatalogSet = new CatalogSet();
		workingUserCatalog = tempCatalogSet.lookupOrCreateCatalog("working", ""); //$NON-NLS-1$ //$NON-NLS-2$
		workingUserCatalog.addEntriesFromCatalog(userCatalog);
	}
	
	public boolean canFinish() {
		return importPage.isPageComplete();
	}

	public boolean performFinish() {
		IFile file = importPage.getFile();
		if (file != null) {
			String fileName = file.getLocation().toFile().toURI().toString();
			try {
				CatalogSet tempResourceSet = new CatalogSet();
				ICatalog newCatalog = tempResourceSet.lookupOrCreateCatalog("temp", fileName); //$NON-NLS-1$
				
				workingUserCatalog.addEntriesFromCatalog(newCatalog);
				userCatalog.clear();
				userCatalog.addEntriesFromCatalog(workingUserCatalog);
				userCatalog.save();
			}
			catch (Exception e) {
				return false;
			}
		}
		
		return true;
	}

	public void init(IWorkbench workbench, IStructuredSelection selection) {
		// TODO Auto-generated method stub

	}
	
	public void addPages() {
		importPage = new ImportXMLCatalogPage();
		importPage.setTitle(XMLCatalogMessages.UI_LABEL_IMPORT_DIALOG_HEADING);
		importPage.setDescription(XMLWizardsMessages._UI_DIALOG_XMLCATALOG_IMPORT_DESCRIPTION);
		importPage.setMessage(XMLCatalogMessages.UI_LABEL_IMPORT_DIALOG_MESSAGE);
		addPage(importPage);
		importPage.setPageComplete(false);
	}
}