/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.application.internal.operations;

import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jem.util.UIContextDetermination;
import org.eclipse.jem.util.logger.proxy.Logger;
import org.eclipse.jst.j2ee.internal.J2EEConstants;
import org.eclipse.jst.j2ee.internal.J2EEVersionConstants;
import org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathUpdater;
import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
import org.eclipse.jst.j2ee.model.IEARModelProvider;
import org.eclipse.jst.j2ee.model.IModelProvider;
import org.eclipse.jst.j2ee.model.ModelProviderManager;
import org.eclipse.jst.j2ee.project.facet.EarFacetRuntimeHandler;
import org.eclipse.jst.javaee.application.ApplicationFactory;
import org.eclipse.jst.javaee.application.Module;
import org.eclipse.jst.javaee.application.Web;
import org.eclipse.jst.jee.application.ICommonApplication;
import org.eclipse.jst.jee.application.ICommonModule;
import org.eclipse.swt.widgets.Display;
import org.eclipse.wst.common.componentcore.datamodel.properties.ICreateReferenceComponentsDataModelProperties;
import org.eclipse.wst.common.componentcore.internal.ReferencedComponent;
import org.eclipse.wst.common.componentcore.internal.StructureEdit;
import org.eclipse.wst.common.componentcore.internal.WorkbenchComponent;
import org.eclipse.wst.common.componentcore.internal.operation.CreateReferenceComponentsOp;
import org.eclipse.wst.common.componentcore.internal.util.IModuleConstants;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.common.project.facet.core.IFacetedProject;
import org.eclipse.wst.common.project.facet.core.IProjectFacet;
import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager;

public class AddComponentToEnterpriseApplicationOp extends CreateReferenceComponentsOp {
	public static final String metaInfFolderDeployPath = "/"; //$NON-NLS-1$

	public AddComponentToEnterpriseApplicationOp(IDataModel model) {
		super(model);
	}

	public IStatus execute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
		if (monitor != null) {
			monitor.beginTask("", 3);
		}
		try {
			J2EEComponentClasspathUpdater.getInstance().pauseUpdates();
			IStatus  status = validateEditEAR();
			if( status.isOK() ){
				status = super.execute(submon(monitor, 1), info);
				if (!status.isOK())
					return Status.CANCEL_STATUS;
				updateEARDD(submon(monitor, 1));
				updateModuleRuntimes(submon(monitor, 1));
			}
			return status;
		} finally {
			if (monitor != null) {
				monitor.done();
			}
			J2EEComponentClasspathUpdater.getInstance().resumeUpdates();
		}
	}

	protected String getArchiveName(IVirtualComponent comp) {
		boolean useArchiveURI = true;
		IFacetedProject facetedProject = null;
		try {
			facetedProject = ProjectFacetsManager.create(comp.getProject());
		} catch (CoreException e) {
			useArchiveURI = false;
		}

		if (useArchiveURI && facetedProject != null && ProjectFacetsManager.isProjectFacetDefined(IModuleConstants.JST_UTILITY_MODULE)) {
			IProjectFacet projectFacet = ProjectFacetsManager.getProjectFacet(IModuleConstants.JST_UTILITY_MODULE);
			useArchiveURI = projectFacet != null && facetedProject.hasProjectFacet(projectFacet);
		}
		if (useArchiveURI) {
			return super.getArchiveName(comp);
		}
		return ""; //$NON-NLS-1$
	}

	protected void updateEARDD(IProgressMonitor monitor) {
		
		StructureEdit se = null;
		try {
			IVirtualComponent sourceComp = (IVirtualComponent) model.getProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT);
			final IEARModelProvider earModel = (IEARModelProvider)ModelProviderManager.getModelProvider(sourceComp.getProject());
			
			se = StructureEdit.getStructureEditForWrite(sourceComp.getProject());
			if (earModel != null) {
				List list = (List) model.getProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST);
				final Map map = (Map) model.getProperty(IAddComponentToEnterpriseApplicationDataModelProperties.TARGET_COMPONENTS_TO_URI_MAP);
				if (list != null && list.size() > 0) {
					for (int i = 0; i < list.size(); i++) {
						StructureEdit compse = null;
						final IVirtualComponent wc = (IVirtualComponent) list.get(i);
						WorkbenchComponent earwc = se.getComponent();
						try {
							compse = StructureEdit.getStructureEditForWrite(wc.getProject());
							WorkbenchComponent refwc = compse.getComponent();
							final ReferencedComponent ref = se.findReferencedComponent(earwc, refwc);
							earModel.modify(new Runnable() {
								public void run() {
									final ICommonApplication application = (ICommonApplication)earModel.getModelObject();
									if(application != null) {
										ICommonModule mod = addModule(application, wc, (String) map.get(wc));
										if (ref!=null)
											ref.setDependentObject((EObject)mod);
									}
								}
							}, null);
						} finally {
							if (compse != null) {
								compse.saveIfNecessary(monitor);
								compse.dispose();
							}
						}
					}
				}
			}
			se.saveIfNecessary(monitor);
		} catch (Exception e) {
			Logger.getLogger().logError(e);
		} finally {
			if (se != null)
				se.dispose();
		}
	}

	protected ICommonModule createNewModule(IVirtualComponent wc, String name) {
		ICommonModule newModule = null;
		final IVirtualComponent ear = (IVirtualComponent) this.model.getProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT);
		final IProject earpj = ear.getProject();
		boolean useNewModel = J2EEProjectUtilities.getJ2EEDDProjectVersion(earpj).equals(J2EEVersionConstants.VERSION_5_0_TEXT);
		if (J2EEProjectUtilities.isDynamicWebProject(wc.getProject())) {
			Properties props = wc.getMetaProperties();
			String contextroot = ""; //$NON-NLS-1$
			if ((props != null) && (props.containsKey(J2EEConstants.CONTEXTROOT)))
				contextroot = props.getProperty(J2EEConstants.CONTEXTROOT);
			if (useNewModel) {
				Web web = ApplicationFactory.eINSTANCE.createWeb();
				web.setContextRoot(contextroot);
				web.setWebUri(name);
				Module webModule = ApplicationFactory.eINSTANCE.createModule();
				webModule.setWeb(web);
				newModule = (ICommonModule)webModule;
			}
			else {
				org.eclipse.jst.j2ee.application.WebModule webModule = org.eclipse.jst.j2ee.application.ApplicationFactory.eINSTANCE.createWebModule();
				webModule.setUri(name);
				webModule.setContextRoot(contextroot);
				newModule = (ICommonModule)webModule;
			}
			return newModule;
		} else if (J2EEProjectUtilities.isEJBProject(wc.getProject())) {
			if (useNewModel) {
				Module ejbModule = ApplicationFactory.eINSTANCE.createModule();
				ejbModule.setEjb(name);
				newModule = (ICommonModule)ejbModule;
			}
			else {
				org.eclipse.jst.j2ee.application.EjbModule ejbModule = org.eclipse.jst.j2ee.application.ApplicationFactory.eINSTANCE.createEjbModule();
				ejbModule.setUri(name);
				newModule = (ICommonModule)ejbModule;
			}			
			return newModule;
		} else if (J2EEProjectUtilities.isApplicationClientProject(wc.getProject())) {
			if (useNewModel) {
				Module appClientModule = ApplicationFactory.eINSTANCE.createModule();
				appClientModule.setJava(name);
				newModule = (ICommonModule)appClientModule;
			}
			else {
				org.eclipse.jst.j2ee.application.JavaClientModule appClientModule = org.eclipse.jst.j2ee.application.ApplicationFactory.eINSTANCE.createJavaClientModule();
				appClientModule.setUri(name);
				newModule = (ICommonModule)appClientModule;
			}			
			return newModule;
		} else if (J2EEProjectUtilities.isJCAProject(wc.getProject())) {
			if (useNewModel) {
				Module j2cModule = ApplicationFactory.eINSTANCE.createModule();
				j2cModule.setConnector(name);
				newModule = (ICommonModule)j2cModule;
			}
			else {
				org.eclipse.jst.j2ee.application.ConnectorModule j2cModule = org.eclipse.jst.j2ee.application.ApplicationFactory.eINSTANCE.createConnectorModule();
				j2cModule.setUri(name);
				newModule = (ICommonModule)j2cModule;
			}			
			return newModule;
		}
		return null;
	}

	protected ICommonModule addModule(ICommonApplication application, IVirtualComponent wc, String name) {
		ICommonApplication dd = application;
		ICommonModule existingModule = dd.getFirstEARModule(name);
		if (existingModule == null) {
			existingModule = createNewModule(wc, name);
			if (existingModule != null) {
				existingModule.setUri(name);
				dd.getEARModules().add(existingModule);
			}
		}
		return existingModule;
	}

	private void updateModuleRuntimes(final IProgressMonitor monitor) {
		if (monitor != null) {
			monitor.beginTask("", 10);
		}

		try {
			final IVirtualComponent ear = (IVirtualComponent) this.model.getProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT);

			final IProject earpj = ear.getProject();

			final List moduleComponents = (List) this.model.getProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST);

			final Set moduleProjects = new HashSet();

			for (Iterator itr = moduleComponents.iterator(); itr.hasNext();) {
				moduleProjects.add(((IVirtualComponent) itr.next()).getProject());
			}

			if (monitor != null) {
				monitor.worked(1);
			}

			EarFacetRuntimeHandler.updateModuleProjectRuntime(earpj, moduleProjects, submon(monitor, 9));
		} catch (Exception e) {
			Logger.getLogger().logError(e);
		} finally {
			if (monitor != null) {
				monitor.done();
			}
		}
	}

	private static IProgressMonitor submon(final IProgressMonitor parent, final int ticks) {
		return (parent == null ? null : new SubProgressMonitor(parent, ticks));
	}

	public IStatus redo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
		// TODO Auto-generated method stub
		return null;
	}

	public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
		// TODO Auto-generated method stub
		return null;
	}

	protected IStatus validateEditEAR() {
		IStatus status = OK_STATUS;
		IVirtualComponent sourceComp = (IVirtualComponent) model.getProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT);
		IProject project = sourceComp.getProject();

		if (status.isOK()) {
			
			IModelProvider provider = ModelProviderManager.getModelProvider( project );
			Object context = null;
			if( UIContextDetermination.getCurrentContext() == UIContextDetermination.UI_CONTEXT ){
				Display display = Display.getCurrent();
				if(display != null )
					context = display.getActiveShell();
			}			
			status = provider.validateEdit(null, context);
		}
		return status;
	}
	
	protected IStatus validateEdit() {
		return validateEditEAR();
	}
}