package org.eclipse.wst.jsdt.web.core.internal.project;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExecutableExtension;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.wst.common.project.facet.core.IDelegate;
import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;
import org.eclipse.wst.jsdt.internal.core.JavaProject;
import org.eclipse.wst.jsdt.web.core.internal.JSPCorePlugin;

public class JSDTFacetInstaller implements IExecutableExtension {
	
	private static final String RUNTIME="jsdt";
	
	//private static final IProjectNature jsNature = new JavaProject();
	
	private static void someFunction(){
		IDelegate del;
		JSDTFacetInstaller ddl = new JSDTFacetInstaller();
		del = new JSDTFacetInstaller.installNauture();
	}
	
	public static class installNauture implements IDelegate{
    	public void execute(IProject project, IProjectFacetVersion fv, Object config, IProgressMonitor monitor) throws CoreException {
    			
    		if (monitor == null) {
    			monitor = new NullProgressMonitor();
    		}
    		
    		monitor.beginTask("Installing Facet for JavaScript Development Tools" + ".", 100); //$NON-NLS-1$
    
    		try {
    			new JSDTFacetInstaller().installNature(project,monitor);
    		} finally {
    			monitor.done();
    		}
    
    	}
	}
	
	public static class uninstallNauture implements IDelegate{
    	public void execute(IProject project, IProjectFacetVersion fv, Object config, IProgressMonitor monitor) throws CoreException {
    			
    		if (monitor == null) {
    			monitor = new NullProgressMonitor();
    		}
    		
    		monitor.beginTask("Uninstalling Facet for JavaScript Development Tools" + ".", 100); //$NON-NLS-1$
    
    		try {
    			new JSDTFacetInstaller().uninstallNature(project,monitor);
    		} finally {
    			monitor.done();
    		}
    
    	}
	}
	
	protected String getRuntimeType(){ return RUNTIME;}

	public void setInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {

		System.out.println( "setInitializationData" );
		
	}
	
    public void installNature( IProject project, IProgressMonitor monitor ) throws CoreException{
    		
    		monitor.beginTask( "Installing JavaScript Development Tools...", 100 );
    		
    		//by using natures we can leverage the precondition support
    		monitor.subTask( "Adding nature..." );
    		SubProgressMonitor sub = new SubProgressMonitor( monitor, 25 );
    		
    		if(JavaProject.hasJavaNature(project)) return;
    		
    		try{
    			
    			IProjectNature jsNature = new JavaProject();
    			monitor.worked(20);
    			jsNature.setProject(project);
    			monitor.worked(50);
    			jsNature.configure();
    			monitor.worked(20);
    			
    		}
    		catch( CoreException e ){
    			throw new CoreException( new Status(
    					IStatus.ERROR,
    					JSPCorePlugin.PLUGIN_ID,
    					IStatus.OK,
    					"Error installing runtime! JavaScript Development Tools could not be added..", e) );
    		}
    		
    	}
    	
	/*
	 * Runtime uninstall
	 */
	public void uninstallNature( IProject project, IProgressMonitor monitor ) throws CoreException{

		monitor.beginTask("Uninstalling JavaScript Development Tools...", 100 );
		
		//by using natures we can leverage the precondition support
		monitor.subTask( "Removing nature..." );
		SubProgressMonitor sub = new SubProgressMonitor( monitor, 25 );
		
		if(!JavaProject.hasJavaNature(project)) return;
		
		try{
			
			IProjectNature jsNature = new JavaProject();
			monitor.worked(20);
			jsNature.setProject(project);
			monitor.worked(50);
			jsNature.deconfigure();
			monitor.worked(20);
			
		}catch(CoreException e){
			throw new CoreException( new Status(
				IStatus.ERROR,
				JSPCorePlugin.PLUGIN_ID,
				IStatus.OK,
				"Error installing runtime! JavaScript Development Tools could not be removed, or is not present in target project..", e) );
		}
	}
}