/*******************************************************************************
 * Copyright (c) 2005-2007 BEA Systems, Inc.
 * 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:
 * rfrost@bea.com - initial API and implementation
 *******************************************************************************/

package org.eclipse.jst.j2ee.refactor.operations;

import java.util.List;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jst.j2ee.common.CompatibilityDescriptionGroup;
import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
import org.eclipse.jst.j2ee.model.IModelProvider;
import org.eclipse.jst.j2ee.model.ModelProviderManager;
import org.eclipse.jst.javaee.application.Application;
import org.eclipse.jst.javaee.applicationclient.ApplicationClient;
import org.eclipse.jst.javaee.core.DisplayName;
import org.eclipse.jst.javaee.core.JavaeeFactory;
import org.eclipse.jst.javaee.ejb.EJBJar;
import org.eclipse.jst.javaee.web.WebApp;
import org.eclipse.wst.common.componentcore.internal.StructureEdit;
import org.eclipse.wst.common.componentcore.internal.WorkbenchComponent;
import org.eclipse.wst.common.componentcore.internal.util.ComponentUtilities;
import org.eclipse.wst.common.frameworks.datamodel.AbstractDataModelProvider;
import org.eclipse.wst.common.frameworks.datamodel.DataModelFactory;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.server.core.util.ProjectModuleFactoryDelegate;

public class ProjectRenameOperation extends ProjectRefactorOperation {

	public ProjectRenameOperation(final IDataModel model) {
		super(model);
	}
	
	/**
	 * Override to return the pre-rename metadata.
	 */
	@Override
	protected ProjectRefactorMetadata getProjectMetadata() {
        return (ProjectRefactorMetadata) model.getProperty(ProjectRenameDataModelProvider.ORIGINAL_PROJECT_METADATA);
	}
	
	/**
	 * Updates the project's own metadata.
	 */
	@Override
	protected void updateProject(final ProjectRefactorMetadata originalMetadata) 
		throws ExecutionException {
		  
		// Update the project's .component file
		final ProjectRefactorMetadata refactoredMetadata = super.getProjectMetadata();
		final String oldProjectName = originalMetadata.getProjectName();
		final String newProjectName = refactoredMetadata.getProjectName();
		IProject newProject = ResourcesPlugin.getWorkspace(). getRoot().getProject(newProjectName);
		String originalContextRoot = ComponentUtilities.getServerContextRoot(newProject);
		if (oldProjectName.equals(originalContextRoot)) {
			// if old context root = project name, lets update it
			ComponentUtilities.setServerContextRoot(newProject, newProjectName);
		}
		StructureEdit core = null;
		WorkbenchComponent component = null;
		try{
		core = StructureEdit.getStructureEditForWrite(refactoredMetadata.getProject());
		if(core != null){
		component = core.getComponent();
		}
	
		// if the deploy-name equals the old project name, update it in the module-specific deployment descriptor
		if (component != null && component.getName().equals(originalMetadata.getProjectName())) {
			component.setName(refactoredMetadata.getProjectName());
		}
		}finally {
			if(core != null) {
				core.saveIfNecessary(null);
				core.dispose();
			}
		}
		final IProject refactoredProject = refactoredMetadata.getProject();
		if (J2EEProjectUtilities.isUtilityProject(refactoredProject)) {
			// skip if a utility project (will not have a ModelProvider and checking logs an error
			return;
		}
		final IModelProvider model = ModelProviderManager.getModelProvider(refactoredProject);
		if (model != null) {
			model.modify(new Runnable() {
				public void run() {
					final Object modelObject = model.getModelObject();
					if (modelObject instanceof CompatibilityDescriptionGroup) {
						CompatibilityDescriptionGroup cdg = (CompatibilityDescriptionGroup) modelObject;
						if (cdg.getDisplayName().equals(oldProjectName)) {
							cdg.setDisplayName(newProjectName);
						}				
					} else {
						DisplayName dn = JavaeeFactory.eINSTANCE.createDisplayName();
						dn.setValue(newProjectName);
						List displayNames = null;
						if (modelObject instanceof Application) {
							displayNames = ((Application) modelObject).getDisplayNames();
						} else if (modelObject instanceof WebApp) {
							displayNames = ((WebApp)modelObject).getDisplayNames();
						} else if (modelObject instanceof ApplicationClient) {
							displayNames = ((ApplicationClient)modelObject).getDisplayNames();		
						} else if (modelObject instanceof EJBJar) {
							displayNames = ((EJBJar)modelObject).getDisplayNames();
						}
						if (displayNames != null && !displayNames.isEmpty()) {
							DisplayName oldDN = (DisplayName) displayNames.get(0);
							if (oldDN.getValue().equals(oldProjectName)) {
								displayNames.set(0, dn);
							}
						}
					}
				}
			}, null);
		}
	}
	
	/**
	 * Updates the metadata for dependent projects
	 * @throws ExecutionException
	 */
	@Override
	protected void updateDependentProjects(final ProjectRefactorMetadata originalMetadata,
			final IProgressMonitor monitor) throws ExecutionException {
	    // If this is not an EAR, update metadata for dependent projects
        // (not performing any refactoring for projects that depend on EAR's right now)
        if (!originalMetadata.isEAR()) {
            super.updateDependentProjects(originalMetadata, monitor);
        }
		// update any server instance refs to the refactored project
		final ProjectRefactorMetadata refactoredMetadata = super.getProjectMetadata();
        ProjectModuleFactoryDelegate.handleGlobalProjectChange(refactoredMetadata.getProject(),
                (IResourceDelta) model.getProperty(ProjectRenameDataModelProvider.RESOURCE_DELTA));           
		super.updateServerRefs(originalMetadata, refactoredMetadata);
	}
	
	/**
	 * Updates the dependent EAR project to account for the renaming of the referenced project.
	 */
	@Override
	protected void updateDependentEARProject(final ProjectRefactorMetadata dependentMetadata, 
			final ProjectRefactorMetadata originalMetadata) throws ExecutionException {
        if (OptionalRefactorHandler.getInstance().shouldRefactorDependentProjectOnRename(originalMetadata, dependentMetadata)) {
		    final IDataModel dataModel = createDataModel(dependentMetadata, originalMetadata,
		            new UpdateDependentEARonRenameProvider());
		    dataModel.getDefaultOperation().execute(null, null);
        }
	}
	
	/**
	 * Updates the dependent module project to account for the renaming of the referenced project.
	 */
	@Override
	protected void updateDependentModuleProject(final ProjectRefactorMetadata dependentMetadata, 
			final ProjectRefactorMetadata originalMetadata) throws ExecutionException {
        if (OptionalRefactorHandler.getInstance().shouldRefactorDependentProjectOnRename(originalMetadata, dependentMetadata)) {
            final IDataModel dataModel = createDataModel(dependentMetadata, originalMetadata,
                    new UpdateDependentModuleonRenameProvider());
            dataModel.getDefaultOperation().execute(null, null);
        }
	}
	
	private IDataModel createDataModel(final ProjectRefactorMetadata dependentMetadata, 
			final ProjectRefactorMetadata originalMetadata,
			final AbstractDataModelProvider provider) {
		final ProjectRefactorMetadata refactoredMetadata = super.getProjectMetadata();
		final IDataModel dataModel = DataModelFactory.createDataModel(provider);
		dataModel.setProperty(PROJECT_METADATA, refactoredMetadata);
		dataModel.setProperty(DEPENDENT_PROJECT_METADATA, dependentMetadata);
		dataModel.setProperty(ORIGINAL_PROJECT_METADATA, originalMetadata);
		return dataModel;
	}
	
}