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/*
 * Copyright (c) 2011-2014 Fernando Petrola
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dragome.helpers;

import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.dragome.commons.compiler.annotations.MethodAlias;
import com.dragome.services.ServiceLocator;
import com.dragome.services.WebServiceLocator;

public class AnnotationsHelper
{
	public static class AnnotationContainer
	{
		public class AnnotationEntry
		{
			private Class type;

			public Class getType()
			{
				return type;
			}

			public String getAnnotationKey()
			{
				return annotationKey;
			}

			public String getAnnotationValue()
			{
				return annotationValue;
			}

			private String annotationKey;
			private String annotationValue;

			public AnnotationEntry(Class type, String annotationKey, String annotationValue)
			{
				this.type= type;
				this.annotationKey= annotationKey;
				this.annotationValue= annotationValue;
			}
		}

		private List entries= new ArrayList();

		public List getEntries()
		{
			return entries;
		}

		public void add(Class type, String annotationKey, String annotationValue)
		{
			entries.add(new AnnotationEntry(type, annotationKey, annotationValue));
		}
	}

	private static Map, AnnotationContainer> annotationsByType= new HashMap, AnnotationContainer>();
	private static List annotations= new ArrayList();

	public static AnnotationContainer getAnnotationsByType(Class aType)
	{
		AnnotationContainer annotationContainer= annotationsByType.get(aType);
		if (annotationContainer == null)
			annotationsByType.put(aType, annotationContainer= new AnnotationContainer());

		return annotationContainer;
	}

	@MethodAlias(alias= "dragomeJs.addTypeAnnotation")
	public static void addTypeAnnotation(String className, String annotationClassName, String annotationKey, String annotationValue)
	{
		try
		{
			WebServiceLocator.getInstance().setClientSideEnabled(true);
			Class type= ServiceLocator.getInstance().getReflectionService().forName(className);
			Class annotationClass= (Class) ServiceLocator.getInstance().getReflectionService().forName(annotationClassName);

			AnnotationContainer map= getAnnotationsByType(annotationClass);
			map.add(type, annotationKey, annotationValue);

			annotations.add(className + "|" + annotationClassName + "|" + annotationKey + "|" + annotationValue);
		}
		catch (Exception e)
		{
			Logger.getLogger(AnnotationsHelper.class.getName()).log(Level.FINEST, "Cannot add type annotation", e);
		}
	}
}