package org.eclipse.update.internal.core;
/*
 * (c) Copyright IBM Corp. 2000, 2002.
 * All Rights Reserved.
 */
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.update.core.*;
import org.eclipse.update.core.model.URLEntryModel;

/**
 * Factory for Feature Packaged
 */
public class FeaturePackagedFactory extends BaseFeatureFactory {

	/*
	 * @see IFeatureFactory#createFeature(URL,ISite,IProgressMonitor)
	 */
	public IFeature createFeature(URL url,ISite site, IProgressMonitor monitor) throws CoreException {
		Feature feature = null;
		InputStream featureStream = null;
		if (monitor == null)
			monitor = new NullProgressMonitor();
					
		try {	
			IFeatureContentProvider contentProvider = new FeaturePackagedContentProvider(url);	
			ContentReference manifest = contentProvider.getFeatureManifestReference(null/*IProgressMonitor*/);
			featureStream = manifest.getInputStream();
			feature = (Feature)parseFeature(featureStream);
			monitor.worked(1);
	
			// if there is no update URL for the Feature
			// use the Site URL
			if (feature.getUpdateSiteEntry()==null){
				URLEntryModel entryModel = createURLEntryModel();
				URL siteUrl = site.getURL();
				if (siteUrl!=null){
					entryModel.setURLString(siteUrl.toExternalForm());
					entryModel.resolve(siteUrl,null);
					feature.setUpdateSiteEntryModel(entryModel);
				}
			}	
			feature.setFeatureContentProvider(contentProvider);
			feature.setSite(site);						
			URL baseUrl = null;
			try {
				baseUrl = new URL(manifest.asURL(),"."); // make sure we have URL to feature directory //$NON-NLS-1$
			} catch(MalformedURLException e) {	
			}
			feature.resolve(baseUrl, baseUrl);
			feature.markReadOnly();			
		}  catch (CoreException e){
			throw e;
		} catch (Exception e) { 
			throw Utilities.newCoreException(Policy.bind("FeatureFactory.CreatingError", url.toExternalForm()), e); //$NON-NLS-1$
		}finally {
			try {
				if (featureStream!=null)	
					featureStream.close();
			} catch (IOException e) {
			}
		}
		return feature;
	}

}