/*
    * 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 org.apache.myfaces.extensions.validator.core.metadata.transformer;
  
  import org.apache.myfaces.extensions.validator.core.mapper.NameMapper;
  import org.apache.myfaces.extensions.validator.core.mapper.SubMapperAwareNameMapper;
  import org.apache.myfaces.extensions.validator.core.Nested;
  import org.apache.myfaces.extensions.validator.internal.UsageCategory;
  import org.apache.myfaces.extensions.validator.internal.UsageInformation;
  
  import java.util.List;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Collection;
  import java.util.Comparator;
  import java.util.Iterator;
  import java.util.ListIterator;
  import java.util.concurrent.CopyOnWriteArrayList;
  
  
  /**
   * @since x.x.3
   */
  @UsageInformation({UsageCategory.INTERNAL})
  class SortedNameMapperList<T extends NameMapper> extends CopyOnWriteArrayList<T>
  {
      private static final long serialVersionUID = 1502156999599962365L;
  
      private List<T> wrapped;
      private List<T> globalSubNameMapperList;
  
      SortedNameMapperList(List<T> wrapped, List<T> subNameMapperList)
      {
          this.wrapped = wrapped;
          this.globalSubNameMapperList = subNameMapperList;
      }
  
      public boolean add(T t)
      {
          if (t != null && t.getClass().isAnnotationPresent(Nested.class))
          {
              return addSubNameMapper(t);
          }
          else
          {
              boolean result = wrapped.add(t);
  
              sortWrappedList();
              return result;
          }
      }
  
      private void sortWrappedList()
      {
          List<T> sortableList = new ArrayList<T>(wrapped);
          Collections.sort(sortableList, new Comparator<T>()
          {
              public int compare(T nm1, T nm2)
              {
                  if (nm1 instanceof SubMapperAwareNameMapper && nm2 instanceof SubMapperAwareNameMapper)
                  {
                      return 0;
                  }
                  return nm1 instanceof SubMapperAwareNameMapper ? 1 : -1;
              }
          });
          wrapped.clear();
          wrapped.addAll(sortableList);
      }
  
      @SuppressWarnings({"unchecked"})
      private boolean addSubNameMapper(T subNameMapper)
      {
          boolean result = false;
          for (NameMapper nameMapper : this.wrapped)
          {
              if (nameMapper instanceof SubMapperAwareNameMapper)
              {
                  ((SubMapperAwareNameMapper) nameMapper).addNameMapper(subNameMapper);
                  result = true;
              }
          }
  
         tryToAddMapperAsGlobalSubNameMapper(subNameMapper);
         return result;
     }
 
     private void tryToAddMapperAsGlobalSubNameMapper(T subNameMapper)
     {
         if(!this.globalSubNameMapperList.contains(subNameMapper))
         {
             this.globalSubNameMapperList.add(subNameMapper);
         }
     }
 
     /*
      * generated
      */
     public int size()
     {
         return wrapped.size();
     }
 
     public boolean isEmpty()
     {
         return wrapped.isEmpty();
     }
 
     public boolean contains(Object o)
     {
         return wrapped.contains(o);
     }
 
     public Iterator<T> iterator()
     {
         return wrapped.iterator();
     }
 
     public Object[] toArray()
     {
         return wrapped.toArray();
     }
 
     @SuppressWarnings({"SuspiciousToArrayCall"})
     public <T> T[] toArray(T[] a)
     {
         return wrapped.toArray(a);
     }
 
     public boolean remove(Object o)
     {
         return wrapped.remove(o);
     }
 
     public boolean containsAll(Collection<?> c)
     {
         return wrapped.containsAll(c);
     }
 
     public boolean addAll(Collection<? extends T> c)
     {
         return wrapped.addAll(c);
     }
 
     public boolean addAll(int index, Collection<? extends T> c)
     {
         return wrapped.addAll(index, c);
     }
 
     public boolean removeAll(Collection<?> c)
     {
         return wrapped.removeAll(c);
     }
 
     public boolean retainAll(Collection<?> c)
     {
         return wrapped.retainAll(c);
     }
 
     public void clear()
     {
         wrapped.clear();
     }
 
     public T get(int index)
     {
         return wrapped.get(index);
     }
 
     public T set(int index, T element)
     {
         return wrapped.set(index, element);
     }
 
     public void add(int index, T element)
     {
         wrapped.add(index, element);
     }
 
     public T remove(int index)
     {
         return wrapped.remove(index);
     }
 
     public int indexOf(Object o)
     {
         return wrapped.indexOf(o);
     }
 
     public int lastIndexOf(Object o)
     {
         return wrapped.lastIndexOf(o);
     }
 
     public ListIterator<T> listIterator()
     {
         return wrapped.listIterator();
     }
 
     public ListIterator<T> listIterator(int index)
     {
         return wrapped.listIterator(index);
     }
 
     public List<T> subList(int fromIndex, int toIndex)
     {
         return wrapped.subList(fromIndex, toIndex);
     }
 }