package org.argeo.cms.e4.rap;

import java.util.HashMap;
import java.util.Map;

import javax.security.auth.Subject;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.argeo.cms.ui.dialogs.CmsFeedback;
import org.eclipse.rap.e4.E4ApplicationConfig;
import org.eclipse.rap.rwt.application.Application;
import org.eclipse.rap.rwt.application.Application.OperationMode;
import org.eclipse.rap.rwt.application.ApplicationConfiguration;
import org.eclipse.rap.rwt.application.ExceptionHandler;
import org.eclipse.rap.rwt.client.WebClient;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;

public abstract class AbstractRapE4App implements ApplicationConfiguration {
	private final static Log log = LogFactory.getLog(AbstractRapE4App.class);

	private final BundleContext bc = FrameworkUtil.getBundle(AbstractRapE4App.class).getBundleContext();

	private String pageTitle;
	private String e4Xmi;
	private String path;

	public void configure(Application application) {
		application.setExceptionHandler(new ExceptionHandler() {

			@Override
			public void handleException(Throwable throwable) {
				CmsFeedback.show("Unexpected RWT exception", throwable);
				// log.error("Unexpected RWT exception", throwable);

			}
		});

		String lifeCycleUri = "bundleclass://" + bc.getBundle().getSymbolicName() + "/"
				+ CmsLoginLifecycle.class.getName();

		Map<String, String> properties = new HashMap<String, String>();
		properties.put(WebClient.PAGE_TITLE, pageTitle);
		E4ApplicationConfig config = new E4ApplicationConfig(e4Xmi, lifeCycleUri, null, false, true, true);
		Subject subject = new Subject();
		addEntryPoint(application, subject, config, properties);
		// config.isClearPersistedState();
		// E4EntryPointFactory entryPointFactory = new E4EntryPointFactory(config) {
		//
		// @Override
		// public EntryPoint create() {
		// Subject subject = new Subject();
		// EntryPoint ep = createEntryPoint();
		// EntryPoint authEp = new EntryPoint() {
		//
		// @Override
		// public int createUI() {
		// return Subject.doAs(subject, new PrivilegedAction<Integer>() {
		//
		// @Override
		// public Integer run() {
		// return ep.createUI();
		// }
		//
		// });
		// }
		// };
		// return authEp;
		// }
		//
		// protected EntryPoint createEntryPoint() {
		// return super.create();
		// }
		//
		// };
	}

	protected void addEntryPoint(Application application, Subject subject, E4ApplicationConfig config,
			Map<String, String> properties) {
		CmsE4EntryPointFactory entryPointFactory = new CmsE4EntryPointFactory(subject, config);
		application.addEntryPoint(path, entryPointFactory, properties);
		application.setOperationMode(OperationMode.SWT_COMPATIBILITY);
	}

	public void setPageTitle(String pageTitle) {
		this.pageTitle = pageTitle;
	}

	public void setE4Xmi(String e4Xmi) {
		this.e4Xmi = e4Xmi;
	}

	public void setPath(String path) {
		this.path = path;
	}

}