/*******************************************************************************
 * Copyright (c) 2003, 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.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IContainer;
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.Path;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jem.util.UIContextDetermination;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jem.util.logger.proxy.Logger;
import org.eclipse.jst.j2ee.application.internal.operations.AddComponentToEnterpriseApplicationDataModelProvider;
import org.eclipse.jst.j2ee.application.internal.operations.IAddComponentToEnterpriseApplicationDataModelProperties;
import org.eclipse.jst.j2ee.internal.J2EEConstants;
import org.eclipse.jst.j2ee.internal.earcreation.EarFacetInstallDataModelProvider;
import org.eclipse.jst.j2ee.internal.project.ManifestFileCreationAction;
import org.eclipse.wst.common.componentcore.ComponentCore;
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.FacetProjectCreationOperation;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.frameworks.datamodel.DataModelFactory;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.common.internal.emf.resource.RendererFactory;
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.IFacetedProject.Action.Type;
import org.eclipse.wst.common.project.facet.core.runtime.IRuntime;
import org.eclipse.wst.project.facet.IProductConstants;
import org.eclipse.wst.project.facet.ProductManager;

public abstract class J2EEFacetInstallDelegate {

	protected static void addToClasspath(final IJavaProject jproj, final IClasspathEntry entry) throws CoreException {
		final IClasspathEntry[] current = jproj.getRawClasspath();
		final IClasspathEntry[] updated = new IClasspathEntry[current.length + 1];
		System.arraycopy(current, 0, updated, 0, current.length);
		updated[current.length] = entry;
		jproj.setRawClasspath(updated, null);
	}

	protected void installEARFacet(String j2eeVersionText, String earProjectName, IRuntime runtime, IProgressMonitor monitor){

		IProject project = ProjectUtilities.getProject(earProjectName); 
		if( project.exists())
			return;
		
		IFacetedProject facetProj;
		try {
			facetProj = ProjectFacetsManager.create(earProjectName,
					null, monitor);
			if(null != runtime){
				facetProj.setRuntime(runtime, monitor);
			}
			
			IDataModel earFacetInstallDataModel = DataModelFactory.createDataModel(new EarFacetInstallDataModelProvider());
			earFacetInstallDataModel.setProperty(IFacetDataModelProperties.FACET_PROJECT_NAME, earProjectName);
			earFacetInstallDataModel.setProperty(IFacetDataModelProperties.FACET_VERSION_STR, j2eeVersionText);
			
			Set actions = new HashSet();
			actions.add(new IFacetedProject.Action((Type) earFacetInstallDataModel.getProperty(IFacetDataModelProperties.FACET_TYPE),
				(IProjectFacetVersion) earFacetInstallDataModel.getProperty(IFacetDataModelProperties.FACET_VERSION),
				earFacetInstallDataModel));


			facetProj.modify(actions, null);
			
			try {
				FacetProjectCreationOperation.addDefaultFactets(facetProj, runtime);
			} catch (ExecutionException e) {
				Logger.getLogger().logError(e);
			}			
		} catch (CoreException e) {
			Logger.getLogger().logError(e);
		}		
	}
	
    protected void createManifest(IProject project, IContainer aFolder, IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException {
    	
        IFile file = aFolder.getFile(new Path(J2EEConstants.MANIFEST_URI));
        if (file.exists()) return;
        try {
            ManifestFileCreationAction.createManifestFile(file, project);
        } catch (CoreException e) {
            Logger.getLogger().log(e);
        } catch (IOException e) {
            Logger.getLogger().log(e);
        }
    }

    protected void addToEar(IVirtualComponent earComp, IVirtualComponent j2eeComp, String moduleURI ){
		final IDataModel dataModel = DataModelFactory.createDataModel(new AddComponentToEnterpriseApplicationDataModelProvider());
		Map map = (Map)dataModel.getProperty(IAddComponentToEnterpriseApplicationDataModelProperties.TARGET_COMPONENTS_TO_URI_MAP);
		map.put(j2eeComp, moduleURI);
		
		dataModel.setProperty(ICreateReferenceComponentsDataModelProperties.SOURCE_COMPONENT, earComp);
			
		List modList = (List) dataModel.getProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST);
		modList.add(j2eeComp);
		dataModel.setProperty(ICreateReferenceComponentsDataModelProperties.TARGET_COMPONENT_LIST, modList);
		try {
			dataModel.getDefaultOperation().execute(null, null);
		} catch (ExecutionException e) {
			Logger.getLogger().logError(e);
		}
    }
    
    protected void installAndAddModuletoEAR( String j2eeVersionText,
    			String				earProjectName,
    			IRuntime			runtime,
    			IProject			moduleProject,
    			String				moduleURI,
    			IProgressMonitor	monitor ){
    	
		installEARFacet(j2eeVersionText,
					earProjectName,
					runtime,
					monitor);
		
		final IVirtualComponent c = ComponentCore.createComponent( moduleProject );
		final IProject earProject = ProjectUtilities.getProject( earProjectName );
		final IVirtualComponent earComp = ComponentCore.createComponent( earProject );
		
		if( UIContextDetermination.getCurrentContext() == UIContextDetermination.HEADLESS_CONTEXT ){
			boolean isValidating = RendererFactory.getDefaultRendererFactory().isValidating();
			try{
				if( isValidating ){
					RendererFactory.getDefaultRendererFactory().setValidating(false);
				}
				addToEar( earComp, c, moduleURI );
			}finally{
				RendererFactory.getDefaultRendererFactory().setValidating(isValidating);
			}
		}
		else
		 addToEar( earComp, c, moduleURI );
    }
    
    /**
     * This method will set the output property on the model element for the given component.
     * If the single root structure is set for optimized use, the output folder will be the
     * content root.  Otherwise the default will be used.  This may be overrided by specific
     * J2EE modules to do more appropriate behaviour.
     * 
     * @param model
     * @param component
     */
    protected void setOutputFolder(IDataModel model, IVirtualComponent component) {
		String outputFolder = null;
		// If using single root structure, set output folder to be the content folder
		if (ProductManager.shouldUseSingleRootStructure())
			outputFolder = model.getStringProperty(IJ2EEModuleFacetInstallDataModelProperties.CONFIG_FOLDER);
		// Otherwise just use the product default for java output path
		else
			outputFolder = ProductManager.getProperty(IProductConstants.OUTPUT_FOLDER);
		component.setMetaProperty("java-output-path", outputFolder ); //$NON-NLS-1$
	}
  
}