/******************************************************************************
 * Copyright (c) 2009 Red Hat, IBM
 * 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:
 *    Rob Stryker - initial implementation and ongoing maintenance
 *    Chuck Bridgham - additional support
 ******************************************************************************/
package org.eclipse.jst.j2ee.internal.ui;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jst.j2ee.application.internal.operations.UpdateManifestDataModelProperties;
import org.eclipse.jst.j2ee.application.internal.operations.UpdateManifestDataModelProvider;
import org.eclipse.jst.j2ee.commonarchivecore.internal.helpers.ArchiveManifest;
import org.eclipse.jst.j2ee.internal.UpdateManifestOperation;
import org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater;
import org.eclipse.jst.j2ee.internal.componentcore.JavaEEModuleHandler;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPlugin;
import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
import org.eclipse.jst.j2ee.project.JavaEEProjectUtilities;
import org.eclipse.wst.common.componentcore.internal.IModuleHandler;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.componentcore.ui.propertypage.AddModuleDependenciesPropertiesPage;
import org.eclipse.wst.common.componentcore.ui.propertypage.ModuleAssemblyRootPage;
import org.eclipse.wst.common.frameworks.datamodel.DataModelFactory;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;

public class J2EEModuleDependenciesPropertyPage extends
		AddModuleDependenciesPropertiesPage {

	public J2EEModuleDependenciesPropertyPage(IProject project,
			ModuleAssemblyRootPage page) {
		super(project, page);
	}
	
	@Override
	public boolean postHandleChanges(IProgressMonitor monitor) {
		return true;
	}
	
	@Override
	protected void handleRemoved(ArrayList<IVirtualComponent> removed) {
		super.handleRemoved(removed);
		
		J2EEComponentClasspathUpdater.getInstance().queueUpdateEAR(rootComponent.getProject());
	}


	@Override
	protected String getAddFolderLabel() {
		
		if (JavaEEProjectUtilities.isEJBProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_0;
		if (JavaEEProjectUtilities.isApplicationClientProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_1;
		if (JavaEEProjectUtilities.isJCAProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_2;
		return super.getAddFolderLabel();
	}

	@Override
	protected String getModuleAssemblyRootPageDescription() {
		
		if (JavaEEProjectUtilities.isEJBProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_3;
		if (JavaEEProjectUtilities.isApplicationClientProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_4;
		if (JavaEEProjectUtilities.isJCAProject(project))
			return Messages.J2EEModuleDependenciesPropertyPage_5;
		return super.getModuleAssemblyRootPageDescription();
	}


	@Override
	protected void addComponents(ArrayList<IVirtualComponent> components) throws CoreException {
		// First add the components
		super.addComponents(components);
		// Now add to MANIFEST
		addToManifest(components);
		
	}
	
	protected void addToManifest(ArrayList<IVirtualComponent> components) {
		
		StringBuffer newComps = getCompsForManifest(components);
		if(newComps.toString().length() > 0) {
			UpdateManifestOperation op = createManifestOperation(newComps.toString());
			try {
				op.run(new NullProgressMonitor());
			} catch (InvocationTargetException e) {
				J2EEUIPlugin.logError(e);
			} catch (InterruptedException e) {
				J2EEUIPlugin.logError(e);
			}	
		}
	}

	protected StringBuffer getCompsForManifest(ArrayList<IVirtualComponent> components) {
		StringBuffer newComps = new StringBuffer();
		for (Iterator iterator = components.iterator(); iterator.hasNext();) {
			IVirtualComponent comp = (IVirtualComponent) iterator.next();
			String archiveName = new Path(objectToRuntimePath.get(comp)).lastSegment();
			newComps.append(archiveName);
			newComps.append(' ');
		}
		return newComps;
	}
	
	protected UpdateManifestOperation createManifestOperation(String newComps) {
		return new UpdateManifestOperation(project.getName(), newComps, false);
	}

	@Override
	protected void removeComponents(ArrayList<IVirtualComponent> removed) {
		// First remove the components
		super.removeComponents(removed);	
		// Now remove from MANIFEST
		removeFromManifest(removed);
		
	}

	private void removeFromManifest(ArrayList<IVirtualComponent> removed) {
		String sourceProjName = project.getName();
		IProgressMonitor monitor = new NullProgressMonitor();
		IFile manifestmf = J2EEProjectUtilities.getManifestFile(project);
		ArchiveManifest mf = J2EEProjectUtilities.readManifest(project);
		if (mf == null)
			return;
		IDataModel updateManifestDataModel = DataModelFactory.createDataModel(new UpdateManifestDataModelProvider());
		updateManifestDataModel.setProperty(UpdateManifestDataModelProperties.PROJECT_NAME, sourceProjName);
		updateManifestDataModel.setBooleanProperty(UpdateManifestDataModelProperties.MERGE, false);
		updateManifestDataModel.setProperty(UpdateManifestDataModelProperties.MANIFEST_FILE, manifestmf);
		String[] cp = mf.getClassPathTokenized();
		List cpList = new ArrayList();
		
		for (int i = 0; i < cp.length; i++) {
			boolean foundMatch = false;
			for (Iterator iterator = removed.iterator(); iterator.hasNext();) {
				IVirtualComponent comp = (IVirtualComponent) iterator.next();
				String cpToRemove = new Path(oldComponentToRuntimePath.get(comp)).lastSegment();
				if (cp[i].equals(cpToRemove))
					foundMatch = true;
			}
			if (!foundMatch)
				cpList.add(cp[i]);
		}
		updateManifestDataModel.setProperty(UpdateManifestDataModelProperties.JAR_LIST, cpList);
		try {
			updateManifestDataModel.getDefaultOperation().execute(monitor, null );
		} catch (ExecutionException e) {
			J2EEUIPlugin.logError(e);
		}
		
	}

	@Override
	protected IModuleHandler getModuleHandler() {
		if(moduleHandler == null)
			moduleHandler = new JavaEEModuleHandler();
		return moduleHandler;
	}
	

}