package org.eclipse.emf.refactor.refactoring.henshin.managers;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.jar.Attributes;
import java.util.jar.Manifest;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.emf.refactor.refactoring.generator.core.RefactoringInfo;
import org.eclipse.emf.refactor.refactoring.generator.managers.DependenciesManager;

public class HenshinDependenciesManager extends DependenciesManager {

	private final static String REFACTORHENSHIN = "org.eclipse.emf.refactor.refactoring.henshin";
	private final static String HENSHINMODEL = "org.eclipse.emf.henshin.model";
	
	public static void updateDependencies(RefactoringInfo info) {
		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(info.getProjectName());
		try {			
			String fileName = project.getLocation().append(MANIFEST_FILE)
								.toOSString();
			FileInputStream is = new FileInputStream(fileName);
			Manifest mf = new Manifest(is);
			Attributes att = mf.getMainAttributes();
			String value = att.getValue(REQUIREBUNDLE);
			if (! value.contains(EXPRESSIONS)) 
				value = value + "," +  EXPRESSIONS;
			if (! value.contains(ECORE))
				value = value + "," +  ECORE;
			if (! value.contains(ECORECHANGE))
				value = value + "," +  ECORECHANGE;
			if (! value.contains(LTKCORE))
				value = value + "," +  LTKCORE;
			if (! value.contains(LTKUI))
				value = value + "," +  LTKUI;
			if (! value.contains(REFACTORCOMMON)) 
				value = value + "," +  REFACTORCOMMON;
			if (! value.contains(REFACTORRUNTIME)) 
				value = value + "," +  REFACTORRUNTIME;
			if (! value.contains(REFACTORHENSHIN))
				value = value + "," +  REFACTORHENSHIN;
			if (! value.contains(HENSHINMODEL))
				value = value + "," +  HENSHINMODEL;
			if (! value.contains(JUNIT)) 
				value = value + "," +  JUNIT + ";bundle-version=\"4.8.1\"";
			if (! value.contains(info.getJar()))
				value = value + "," +  info.getJar();
			att.putValue(REQUIREBUNDLE, value);
			FileOutputStream out = new FileOutputStream(fileName);  
			mf.write(out); 
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	
}