/*******************************************************************************
 * Copyright (c) 2011-2014 Fernando Petrola
 * 
 * This file is part of Dragome SDK.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 ******************************************************************************/
package com.dragome.services.serverside;

import java.lang.annotation.Annotation;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import org.reflections.Reflections;

import com.dragome.commons.DragomeConfigurator;
import com.dragome.commons.DragomeConfiguratorImplementor;
import com.dragome.services.ReflectionServiceImpl;
import com.dragome.web.config.DomHandlerApplicationConfigurator;

public class ServerReflectionServiceImpl extends ReflectionServiceImpl
{
	public <T> Set<Class<? extends T>> getSubTypesOf(final Class<T> type)
	{
//		return null;
		Reflections reflections= new Reflections("^");
		Set<Class<? extends T>> implementations= reflections.getSubTypesOf(type);
		return implementations;
	}
	
	public Set<Class<?>> getTypesAnnotatedWith(Class<?> class1)
	{
//		return null;
		Reflections reflections= new Reflections("^");
		return reflections.getTypesAnnotatedWith((Class<? extends Annotation>) class1);
	}

	public DragomeConfigurator getConfigurator()
	{
		try
		{
			DragomeConfigurator foundConfigurator= null;
			Reflections reflections= new Reflections(".*");
			
			Set<Class<?>> typesAnnotatedWith = null;
			typesAnnotatedWith = reflections.getTypesAnnotatedWith(DragomeConfiguratorImplementor.class);
			int priorityMax = -1;
			Class<?> nextClass = null;
			Iterator<Class<?>> iterator = typesAnnotatedWith.iterator();
			while(iterator.hasNext()) {
				Class<?> next = iterator.next();
				DragomeConfiguratorImplementor annotation = next.getAnnotation(DragomeConfiguratorImplementor.class);
				int priorityAnno = annotation.priority();
				if(priorityAnno > priorityMax) {
					priorityMax = priorityAnno;
					nextClass = next;
				}
			}
			if(nextClass != null)
				foundConfigurator = (DragomeConfigurator)nextClass.newInstance();
			
			if (foundConfigurator == null) {
				Set<Class<? extends DragomeConfigurator>> configurators= reflections.getSubTypesOf(DragomeConfigurator.class);
				for (Class<? extends DragomeConfigurator> class1 : configurators)
				{
					if (!class1.equals(DomHandlerApplicationConfigurator.class))
						foundConfigurator= class1.newInstance();
				}
				if(foundConfigurator == null)
					foundConfigurator= new DomHandlerApplicationConfigurator();
			}

			return foundConfigurator;
		}
		catch (Exception e)
		{
			throw new RuntimeException(e);
		}
	}

}