/*******************************************************************************
 * Copyright (c) 2003, 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.jee.internal.deployables;

import java.util.Iterator;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.Path;
import org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualArchiveComponent;
import org.eclipse.jst.j2ee.componentcore.util.EARArtifactEdit;
import org.eclipse.jst.j2ee.internal.EjbModuleExtensionHelper;
import org.eclipse.jst.j2ee.internal.IEJBModelExtenderManager;
import org.eclipse.jst.j2ee.internal.deployables.J2EEFlexProjDeployable;
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.javaee.application.Application;
import org.eclipse.jst.javaee.ejb.EJBJar;
import org.eclipse.jst.javaee.ejb.EnterpriseBeans;
import org.eclipse.jst.javaee.ejb.SessionBean;
import org.eclipse.wst.common.componentcore.ComponentCore;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.componentcore.resources.IVirtualReference;
import org.eclipse.wst.server.core.IModule;
import org.eclipse.wst.server.core.ServerUtil;

/**
 * JEE module superclass.
 */
public class JEEFlexProjDeployable extends J2EEFlexProjDeployable {

	/**
	 * Constructor for JEEFlexProjDeployable.
	 * 
	 * @param project
	 * @param aComponent
	 */
	public JEEFlexProjDeployable(IProject project, IVirtualComponent aComponent) {
		super(project, aComponent);
	}

	/**
	 * Constructor for JEEFlexProjDeployable.
	 * 
	 * @param project
	 */
	public JEEFlexProjDeployable(IProject project) {
		super(project);
	}

	protected boolean shouldIncludeUtilityComponent(IVirtualComponent virtualComp,IVirtualReference[] references, IEARModelProvider model) {
		// If the component module is an EAR we know all archives are filtered out of virtual component members
		// and we will return only those archives which are not binary J2EE modules in the EAR DD.  These J2EE modules will
		// be returned by getChildModules()
		if (J2EEProjectUtilities.isEARProject(component.getProject()))
			return virtualComp != null && virtualComp.isBinary() && !isNestedJ2EEModule(virtualComp, references, model);
		else 
			return super.shouldIncludeUtilityComponent(virtualComp, references, null);
	}
	    
    public String getJNDIName(String ejbName, String interfaceName) {
    	if (!J2EEProjectUtilities.isEJBProject(component.getProject()))
    		return null;

		EjbModuleExtensionHelper modHelper = null;
		EJBJar jar = null;
		
		IModelProvider model = ModelProviderManager.getModelProvider(component.getProject());
		if (model != null) {
			jar = (EJBJar) model.getModelObject();
			SessionBean bean = getSessionBeanNamed(jar, ejbName);
			modHelper = IEJBModelExtenderManager.INSTANCE.getEJBModuleExtension(null);
			return modHelper == null ? null : modHelper.getJavaEEJNDIName(jar, bean, interfaceName);
		}
		
		return null;
	}
    /**
     * Return List of Session beans in this jar.
     * @return java.util.List
     */
    public SessionBean getSessionBeanNamed(EJBJar jar, String beanName) {
    	
    	EnterpriseBeans allBeans = jar.getEnterpriseBeans();
    	for (Iterator iterator = allBeans.getSessionBeans().iterator(); iterator.hasNext();) {
			SessionBean bean = (SessionBean) iterator.next();
    		if (bean.getEjbName().equals(beanName))
    			return bean;
    	}
    	return null;
    }

    
    
    private String getContainedURI(IModule module) {
    	if (component instanceof J2EEModuleVirtualArchiveComponent || isBinaryModuleArchive(module))
    		return new Path(module.getName()).lastSegment();
    	
    	IVirtualComponent comp = ComponentCore.createComponent(module.getProject());
    	String aURI = null;
    	if (comp!=null && component!=null && J2EEProjectUtilities.isEARProject(component.getProject())) {
			//TODO when new JEE model api is available look at this code again
    		// see bug 183320
    		IVirtualReference [] refs = component.getReferences();
    		for(int i=0; i<refs.length; i++){
    			if(refs[i].getReferencedComponent().equals(comp)){
    				aURI = refs[i].getArchiveName();
    				break;
    			}
    		}
    		EARArtifactEdit earEdit = null;
			try {
				earEdit = EARArtifactEdit.getEARArtifactEditForRead(component);
				if (earEdit != null)
					aURI = earEdit.getModuleURI(comp);
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				if (earEdit != null)
					earEdit.dispose();
			}
    	}
    	if (aURI !=null && aURI.length()>1 && aURI.startsWith("/")) //$NON-NLS-1$
    		aURI = aURI.substring(1);
    	return aURI;
	} 
    
    protected IModule gatherModuleReference(IVirtualComponent component, IVirtualComponent targetComponent ) {
    	IModule module = super.gatherModuleReference(component, targetComponent);
    	// Handle binary module components
    	if (targetComponent instanceof J2EEModuleVirtualArchiveComponent) {
    		if (J2EEProjectUtilities.isEARProject(component.getProject()) || targetComponent.getProject()!=component.getProject())
    			module = ServerUtil.getModule(JEEDeployableFactory.ID+":"+targetComponent.getName()); //$NON-NLS-1$
    	}
		return module;
    }
    
    /**
     * Determine if the component is nested J2EE module on the application.xml of this EAR
     * @param aComponent
     * @return boolean is passed in component a nested J2EE module on this EAR
     */
    private boolean isNestedJ2EEModule(IVirtualComponent aComponent, IVirtualReference[] references, IEARModelProvider model) {
    	if (model==null) 
			return false;
		Application app = (Application)model.getModelObject();
		IVirtualReference reference = getReferenceNamed(references,aComponent.getName());
		// Ensure module URI exists on EAR DD for binary archive
		return app.getFirstModule(reference.getArchiveName()) != null;
    }
}