/**

  * Copyright 2011 The Kuali Foundation Licensed under the

  * Educational Community 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.osedu.org/licenses/ECL-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 org.kuali.student.enrollment.lpr.mock;

 import java.beans.BeanInfo;

 import java.beans.IntrospectionException;

 import java.beans.Introspector;

 import java.beans.PropertyDescriptor;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import org.apache.log4j.Logger;

 import org.kuali.student.common.infc.AttributeInfc;

 /**

  * Provides values to compare

  * @author nwright

  */

 public class DataProvider implements DataProviderInfc {

     final static Logger LOG = Logger.getLogger(DataProvider.class);

     private static final String DYNAMIC_ATTRIBUTE = "attributes";

     Map<String, Object> dataMap = null;

     public DataProvider() {

     }

     //TODO fix it later.

     @Override

     public String getPath() {

         return "";

     }

     @SuppressWarnings("unchecked")

     @Override

     public void initialize(Object o) {

         dataMap = new HashMap<String, Object>();

         Map<String, PropertyDescriptor> beanInfo = getBeanInfo(o.getClass());

         for (String propName : beanInfo.keySet()) {

             PropertyDescriptor pd = beanInfo.get(propName);

             Object value = null;

             try {

                 value = pd.getReadMethod().invoke(o);

             } catch (Exception e) {

                 LOG.warn("Method invokation failed", e);

             }

             // Extract dynamic attributes

             if (DYNAMIC_ATTRIBUTE.equals(propName)) {

                 for (AttributeInfc attr: (List<AttributeInfc>) value)

                 {

                  dataMap.put(attr.getKey(), attr.getValue());

                 }

             } else {

                 dataMap.put(propName, value);

             }

         }

     }

     @Override

     public String getObjectId() {

         return (dataMap.containsKey("id") && null != dataMap.get("id")) ? dataMap.get("id").toString() : null;

     }

     @Override

     public Object getValue(String fieldKey) {

         return dataMap.get(fieldKey);

     }

     @Override

     public Boolean hasField(String fieldKey) {

         return dataMap.containsKey(fieldKey);

     }

     private Map<String, PropertyDescriptor> getBeanInfo(Class<?> clazz) {

         Map<String, PropertyDescriptor> properties = new HashMap<String, PropertyDescriptor>();

         BeanInfo beanInfo = null;

         try {

             beanInfo = Introspector.getBeanInfo(clazz);

         } catch (IntrospectionException e) {

             throw new RuntimeException(e);

         }

         PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();

         for (PropertyDescriptor propertyDescriptor : propertyDescriptors) {

             properties.put(propertyDescriptor.getName(), propertyDescriptor);

         }

         return properties;

     }

 }