package org.eclipse.jst.j2ee.application.internal.operations;

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

import org.eclipse.core.resources.IProject;
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.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jem.util.logger.proxy.Logger;
import org.eclipse.jst.j2ee.application.Application;
import org.eclipse.jst.j2ee.application.Module;
import org.eclipse.jst.j2ee.application.WebModule;
import org.eclipse.jst.j2ee.componentcore.util.EARArtifactEdit;
import org.eclipse.jst.j2ee.internal.J2EEConstants;
import org.eclipse.jst.j2ee.internal.application.ApplicationPackage;
import org.eclipse.jst.j2ee.internal.modulecore.util.EARArtifactEditOperation;
import org.eclipse.wst.common.componentcore.internal.ComponentcoreFactory;
import org.eclipse.wst.common.componentcore.internal.Property;
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.impl.ModuleURIUtil;
import org.eclipse.wst.common.componentcore.internal.util.IModuleConstants;

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

	public AddComponentToEnterpriseApplicationOperation(AddComponentToEnterpriseApplicationDataModel operationDataModel) {
		super(operationDataModel);
	}
	
	protected void execute(IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException {
			addComponentToEnterpriseApplication(monitor);
	}

	private void addComponentToEnterpriseApplication(IProgressMonitor monitor) {
		StructureEdit moduleCore = null;
		try{
			String earProj = operationDataModel.getStringProperty(AddComponentToEnterpriseApplicationDataModel.EAR_PROJECT_NAME);
			IProject proj = ProjectUtilities.getProject(earProj);
			
			moduleCore = StructureEdit.getStructureEditForWrite(proj);
			WorkbenchComponent earComp = moduleCore.findComponentByName(operationDataModel.getStringProperty(AddComponentToEnterpriseApplicationDataModel.EAR_MODULE_NAME));
			
			AddComponentToEnterpriseApplicationDataModel dm = (AddComponentToEnterpriseApplicationDataModel)getOperationDataModel();
			IPath runtimePath = new Path(metaInfFolderDeployPath);
			List list = (List)dm.getProperty(AddComponentToEnterpriseApplicationDataModel.MODULE_LIST);
			if (list != null && list.size() > 0) {
				for (int i = 0; i < list.size(); i++) {
					ReferencedComponent rc = ComponentcoreFactory.eINSTANCE.createReferencedComponent();
					WorkbenchComponent wc = (WorkbenchComponent)list.get(i);
					rc.setHandle(normalize(earComp, wc));
					rc.setRuntimePath(runtimePath);
					earComp.getReferencedComponents().add(rc);
				}
			}
			moduleCore.saveIfNecessary(monitor); 
		} finally {
		       if (null != moduleCore) {
		            moduleCore.dispose();
		       }
		 }		
		updateEARDD(monitor);
	}

	protected void updateEARDD(IProgressMonitor monitor){
		
		StructureEdit mCore = null;
        EARArtifactEdit earEdit = null;
       	try{
			
			String earProj = operationDataModel.getStringProperty(AddComponentToEnterpriseApplicationDataModel.EAR_PROJECT_NAME);
			IProject proj = ProjectUtilities.getProject(earProj);
			
			mCore = StructureEdit.getStructureEditForRead(proj);
			WorkbenchComponent earComp = mCore.findComponentByName(operationDataModel.getStringProperty(AddComponentToEnterpriseApplicationDataModel.EAR_MODULE_NAME));
			
			earEdit = EARArtifactEdit.getEARArtifactEditForWrite(earComp);
			if(earEdit != null){
				Application application = (Application) earEdit.getApplication();
				AddComponentToEnterpriseApplicationDataModel dm = (AddComponentToEnterpriseApplicationDataModel)getOperationDataModel();
				List list = (List)dm.getProperty(AddComponentToEnterpriseApplicationDataModel.MODULE_LIST);
				if (list != null && list.size() > 0) {
					for (int i = 0; i < list.size(); i++) {
						WorkbenchComponent wc = (WorkbenchComponent)list.get(i);
						addModule(application, wc);	
					}
				}
			}	
			earEdit.saveIfNecessary(monitor);
       	}
       	catch(Exception e){
       		Logger.getLogger().logError(e);
       	} finally {
		       if (null != mCore) {
				   mCore.dispose();
		       }				
       		if(earEdit != null)
				earEdit.dispose();
			earEdit = null;
       	}		
	}
	protected Module createNewModule(WorkbenchComponent wc) {
		
		String type = wc.getComponentType().getComponentTypeId();
		if ( type.equals(IModuleConstants.JST_WEB_MODULE) ){
			return ((ApplicationPackage) EPackage.Registry.INSTANCE.getEPackage(ApplicationPackage.eNS_URI)).getApplicationFactory().createWebModule();
		}else if ( type.equals(IModuleConstants.JST_EJB_MODULE)) {
			return ((ApplicationPackage) EPackage.Registry.INSTANCE.getEPackage(ApplicationPackage.eNS_URI)).getApplicationFactory().createEjbModule();
		}else if ( type.equals(IModuleConstants.JST_APPCLIENT_MODULE)) {
			return ((ApplicationPackage) EPackage.Registry.INSTANCE.getEPackage(ApplicationPackage.eNS_URI)).getApplicationFactory().createJavaClientModule();
		}else if ( type.equals(IModuleConstants.JST_CONNECTOR_MODULE)) {
			return ((ApplicationPackage) EPackage.Registry.INSTANCE.getEPackage(ApplicationPackage.eNS_URI)).getApplicationFactory().createConnectorModule();
		}
		return null;
	}
	
	protected void addModule(Application application, WorkbenchComponent wc) {
		Application dd = application;
		
		Module m = createNewModule(wc);

		String name = wc.getName();
		String type = wc.getComponentType().getComponentTypeId();
		
		if ( type.equals(IModuleConstants.JST_WEB_MODULE) ){
			name += ".war"; //$NON-NLS-1$
		}else if ( type.equals(IModuleConstants.JST_EJB_MODULE)) {
			name += ".jar"; //$NON-NLS-1$
		}else if ( type.equals(IModuleConstants.JST_APPCLIENT_MODULE)) {
			name += ".jar"; //$NON-NLS-1$
		}else if ( type.equals(IModuleConstants.JST_CONNECTOR_MODULE)) {
			name += ".rar"; //$NON-NLS-1$
		}
		
		if( m!= null){
			m.setUri(name);
			if (m instanceof WebModule) {
				
				List props = wc.getComponentType().getProperties();
				String contextroot = ""; //$NON-NLS-1$
				for( int i=0; i< props.size(); i++){
					Property prop = (Property)props.get(i);
					if( prop.getName().equals(J2EEConstants.CONTEXTROOT)){
						contextroot = prop.getValue();
						break;
					}
				}
				((WebModule) m).setContextRoot(contextroot);
			}		
			dd.getModules().add(m);	
		}	
	}
	
	
	
	private URI normalize(WorkbenchComponent aComponent, WorkbenchComponent aReferencedComponent) {   
		// same project doesn't matter
		if(StructureEdit.getContainingProject(aComponent) == StructureEdit.getContainingProject(aReferencedComponent)) 
			return aReferencedComponent.getHandle();
		// different project, fully qualify
		return ModuleURIUtil.fullyQualifyURI(aReferencedComponent);
							
	}

	public IProject getProject() {
		String projName = operationDataModel.getStringProperty(AddComponentToEnterpriseApplicationDataModel.PROJECT_NAME );
		return ProjectUtilities.getProject( projName );
	}

}