/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.adobe.ac.pmd.rules.maintanability;

import org.apache.commons.lang.StringUtils;

import com.adobe.ac.pmd.nodes.IClass;
import com.adobe.ac.pmd.rules.core.AbstractAstFlexRule;
import com.adobe.ac.pmd.rules.core.ViolationPriority;

public class ClassAndExtensionAreIdenticalRule extends AbstractAstFlexRule
{
   /*
    * (non-Javadoc)
    * @see
    * com.adobe.ac.pmd.rules.core.AbstractAstFlexRule#findViolations(com.adobe
    * .ac.pmd.nodes.IClass)
    */
   @Override
   protected final void findViolations( final IClass classNode )
   {
      final String extensionName = classNode.getExtensionName();

      if ( extensionName != null )
      {
         final String extension = extractExtensionName( extensionName );

         if ( extension.equals( classNode.getName() ) )
         {
            addViolation( classNode );
         }
      }
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.rules.core.AbstractFlexRule#getDefaultPriority()
    */
   @Override
   protected final ViolationPriority getDefaultPriority()
   {
      return ViolationPriority.HIGH;
   }

   private String extractExtensionName( final String extensionName )
   {
      return extensionName.indexOf( '.' ) == -1 ? extensionName
                                               : StringUtils.substringAfterLast( extensionName,
                                                                                 "." );
   }
}