/*******************************************************************************
 * Copyright (c) 2005 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.project.facet;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jem.util.logger.proxy.Logger;
import org.eclipse.jem.workbench.utility.JemProjectUtilities;
import org.eclipse.jst.common.project.facet.WtpUtils;
import org.eclipse.jst.common.project.facet.core.ClasspathHelper;
import org.eclipse.jst.j2ee.application.ApplicationPackage;
import org.eclipse.jst.j2ee.application.Module;
import org.eclipse.jst.j2ee.application.internal.operations.AddComponentToEnterpriseApplicationDataModelProvider;
import org.eclipse.jst.j2ee.application.internal.operations.AddComponentToEnterpriseApplicationOp;
import org.eclipse.jst.j2ee.application.internal.operations.IAddComponentToEnterpriseApplicationDataModelProperties;
import org.eclipse.jst.j2ee.application.internal.operations.UpdateManifestDataModelProperties;
import org.eclipse.jst.j2ee.application.internal.operations.UpdateManifestDataModelProvider;
import org.eclipse.jst.j2ee.applicationclient.componentcore.util.AppClientArtifactEdit;
import org.eclipse.jst.j2ee.internal.J2EEConstants;
import org.eclipse.jst.j2ee.internal.common.J2EEVersionUtil;
import org.eclipse.jst.j2ee.internal.common.operations.INewJavaClassDataModelProperties;
import org.eclipse.jst.j2ee.internal.common.operations.NewJavaClassDataModelProvider;
import org.eclipse.wst.common.componentcore.ComponentCore;
import org.eclipse.wst.common.componentcore.datamodel.FacetDataModelProvider;
import org.eclipse.wst.common.componentcore.datamodel.properties.ICreateReferenceComponentsDataModelProperties;
import org.eclipse.wst.common.componentcore.datamodel.properties.IFacetDataModelProperties;
import org.eclipse.wst.common.componentcore.internal.operation.IArtifactEditOperationDataModelProperties;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.componentcore.resources.IVirtualFile;
import org.eclipse.wst.common.componentcore.resources.IVirtualFolder;
import org.eclipse.wst.common.frameworks.datamodel.DataModelFactory;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.common.frameworks.datamodel.IDataModelOperation;
import org.eclipse.wst.common.project.facet.core.IDelegate;
import org.eclipse.wst.common.project.facet.core.IFacetedProject;
import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;
import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager;
import org.eclipse.wst.common.project.facet.core.runtime.IRuntime;

public class AppClientFacetInstallDelegate extends J2EEFacetInstallDelegate implements IDelegate {

	public void execute(IProject project, IProjectFacetVersion fv, Object config, IProgressMonitor monitor) throws CoreException {
		if (monitor != null)
			monitor.beginTask("", 1); //$NON-NLS-1$
		try {
			IDataModel model = (IDataModel) config;
			final IJavaProject jproj = JavaCore.create(project);

			// Add WTP natures.
			WtpUtils.addNatures(project);

			// Setup the flexible project structure.
			final IVirtualComponent c = createFlexibleProject(monitor, project, model, jproj);

			// Setup the classpath.
			ClasspathHelper.removeClasspathEntries(project, fv);
			if (!ClasspathHelper.addClasspathEntries(project, fv)) {
				// TODO: Support the no runtime case.
				// ClasspathHelper.addClasspathEntries( project, fv, <something> );
			}

			// Associate with an EAR, if necessary.
			final String earProjectName = (String) model.getProperty(IJ2EEModuleFacetInstallDataModelProperties.EAR_PROJECT_NAME);
			if (model.getBooleanProperty(IJ2EEModuleFacetInstallDataModelProperties.ADD_TO_EAR)) {
				if (earProjectName != null && !earProjectName.equals("")) { //$NON-NLS-1$
					String ver = fv.getVersionString();
//					String j2eeVersionText = J2EEVersionUtil.convertVersionIntToString
//					(J2EEVersionUtil.convertWebVersionStringToJ2EEVersionID(ver));
					
					String j2eeVersionText = ver;
					IFacetedProject facetedProject = ProjectFacetsManager.create(project);
					installEARFacet(j2eeVersionText, earProjectName, (IRuntime) model.getProperty(IJ2EEFacetInstallDataModelProperties.FACET_RUNTIME), monitor);

					IProject earProject = ProjectUtilities.getProject(earProjectName);
					IVirtualComponent earComp = ComponentCore.createComponent(earProject);
					final String moduleURI = model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.MODULE_URI);

					final IDataModel dataModel = DataModelFactory.createDataModel(new AddComponentToEnterpriseApplicationDataModelProvider() {
						public Object getDefaultProperty(String propertyName) {
							if (IAddComponentToEnterpriseApplicationDataModelProperties.TARGET_COMPONENTS_TO_URI_MAP.equals(propertyName)) {
								Map map = new HashMap();
								map.put(c, moduleURI);
								return map;
							}
							return super.getDefaultProperty(propertyName);
						}

						public IDataModelOperation getDefaultOperation() {
							return new AddComponentToEnterpriseApplicationOp(model) {
								protected Module createNewModule(IVirtualComponent wc) {
									return ((ApplicationPackage) EPackage.Registry.INSTANCE.getEPackage(ApplicationPackage.eNS_URI)).getApplicationFactory().createJavaClientModule();
								}
							};
						}
					});
					dataModel.setProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT, earComp);
					List modList = (List) dataModel.getProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST);
					modList.add(c);
					dataModel.setProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST, modList);
					try {
						dataModel.getDefaultOperation().execute(null, null);
					} catch (ExecutionException e) {
						Logger.getLogger().logError(e);
					}
				}
			}

			// Add main class if necessary
			if (model.getBooleanProperty(IAppClientFacetInstallDataModelProperties.CREATE_DEFAULT_MAIN_CLASS))
				addMainClass(monitor, model, project);

			try {
				((IDataModelOperation) model.getProperty(FacetDataModelProvider.NOTIFICATION_OPERATION)).execute(monitor, null);
			} catch (ExecutionException e) {
				Logger.getLogger().logError(e);
			}

			if (monitor != null)
				monitor.worked(1);
		} catch (Exception e) {
			Logger.getLogger().logError(e);
		} finally {
			if (monitor != null)
				monitor.done();
		}
	}

	protected IVirtualComponent createFlexibleProject(IProgressMonitor monitor, IProject project, IDataModel model, IJavaProject jproj) throws Exception {
		// Create the directory structure.
		final IWorkspace ws = ResourcesPlugin.getWorkspace();
		final IPath pjpath = project.getFullPath();

		final IVirtualComponent c = ComponentCore.createComponent(project);
		c.create(0, null);
		c.setMetaProperty("java-output-path", "/build/classes/"); //$NON-NLS-1$ //$NON-NLS-2$
		final IVirtualFolder root = c.getRootFolder();
		
		IFolder sourceFolder = null;
		String configFolder = null;
		configFolder = model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.CONFIG_FOLDER);
		root.createLink(new Path("/" + configFolder), 0, null); //$NON-NLS-1$
		String configFolderName = model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.CONFIG_FOLDER);
		IPath configFolderpath = pjpath.append(configFolderName);
		sourceFolder = ws.getRoot().getFolder(configFolderpath);

		if (!sourceFolder.getFile(J2EEConstants.APP_CLIENT_DD_URI).exists()) {
			String ver = model.getStringProperty(IFacetDataModelProperties.FACET_VERSION_STR);
			int nVer = J2EEVersionUtil.convertVersionStringToInt(ver);
			AppClientArtifactEdit.createDeploymentDescriptor(project, nVer);
		}
		
		// add source folder maps
		final IClasspathEntry[] cp = jproj.getRawClasspath();
		for (int i = 0; i < cp.length; i++) {
			final IClasspathEntry cpe = cp[i];
			if (cpe.getEntryKind() == IClasspathEntry.CPE_SOURCE) {
				root.createLink(cpe.getPath().removeFirstSegments(1), 0, null);
			}
		}
		return c;
	}

	private void addMainClass(IProgressMonitor monitor, IDataModel model, IProject project) {
		try {
			IDataModel mainClassDataModel = DataModelFactory.createDataModel(NewJavaClassDataModelProvider.class);
			mainClassDataModel.setProperty(IArtifactEditOperationDataModelProperties.PROJECT_NAME, project.getName());
			mainClassDataModel.setProperty(INewJavaClassDataModelProperties.CLASS_NAME, "Main"); //$NON-NLS-1$
			mainClassDataModel.setBooleanProperty(INewJavaClassDataModelProperties.MAIN_METHOD, true);
			String projRelativeSourcePath = IPath.SEPARATOR + project.getName() + IPath.SEPARATOR + model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.CONFIG_FOLDER);
			mainClassDataModel.setProperty(INewJavaClassDataModelProperties.SOURCE_FOLDER, projRelativeSourcePath);
			IJavaProject javaProject = JemProjectUtilities.getJavaProject(project);
			mainClassDataModel.setProperty(INewJavaClassDataModelProperties.JAVA_PACKAGE_FRAGMENT_ROOT, javaProject.getPackageFragmentRoots()[0]);
			mainClassDataModel.getDefaultOperation().execute(monitor, null);
			createManifestEntryForMainClass(monitor, model, project);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	protected void createManifestEntryForMainClass(IProgressMonitor monitor, IDataModel model, IProject project) throws CoreException, InvocationTargetException, InterruptedException {
		IVirtualComponent appClientComponent = ComponentCore.createComponent(project);
		IVirtualFile vf = appClientComponent.getRootFolder().getFile(new Path(J2EEConstants.MANIFEST_URI));
		IFile manifestmf = vf.getUnderlyingFile();
		if (manifestmf == null || !manifestmf.exists()) {
			try {
				createManifest(project, appClientComponent.getRootFolder().getUnderlyingFolder(), monitor);
			} catch (Exception e) {
				Logger.getLogger().logError(e);
			}
			String manifestFolder = IPath.SEPARATOR + model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.CONFIG_FOLDER) + IPath.SEPARATOR + J2EEConstants.META_INF;
			IContainer container = project.getFolder(manifestFolder);
			manifestmf = container.getFile(new Path(J2EEConstants.MANIFEST_SHORT_NAME));
		}
		if (model.getBooleanProperty(IAppClientFacetInstallDataModelProperties.CREATE_DEFAULT_MAIN_CLASS)) {
			IDataModel dm = DataModelFactory.createDataModel(UpdateManifestDataModelProvider.class);
			dm.setProperty(UpdateManifestDataModelProperties.PROJECT_NAME, project.getName());
			dm.setBooleanProperty(UpdateManifestDataModelProperties.MERGE, false);
			dm.setProperty(UpdateManifestDataModelProperties.MANIFEST_FILE, manifestmf);
			dm.setProperty(UpdateManifestDataModelProperties.MAIN_CLASS, "Main"); //$NON-NLS-1$
			try {
				dm.getDefaultOperation().execute(monitor, null);
			} catch (Exception e) {
				// Ignore
			}
		}
	}
}