/**
    *    Copyright 2009-2015 the original author or authors.
    *
    *    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 org.apache.ibatis.reflection.factory;
  
  import java.io.Serializable;
  import java.lang.reflect.Constructor;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  import java.util.Set;
  import java.util.SortedSet;
  import java.util.TreeSet;
  
  import org.apache.ibatis.reflection.ReflectionException;
  
  /**
   * @author Clinton Begin
   */
  public class DefaultObjectFactory implements ObjectFactory, Serializable {
  
    private static final long serialVersionUID = -8855120656740914948L;
  
    @Override
    public <T> T create(Class<T> type) {
      return create(type, null, null);
    }
  
    @SuppressWarnings("unchecked")
    @Override
    public <T> T create(Class<T> type, List<Class<?>> constructorArgTypes, List<Object> constructorArgs) {
      Class<?> classToCreate = resolveInterface(type);
      // we know types are assignable
      return (T) instantiateClass(classToCreate, constructorArgTypes, constructorArgs);
    }
  
    @Override
    public void setProperties(Properties properties) {
      // no props for default
    }
  
    <T> T instantiateClass(Class<T> type, List<Class<?>> constructorArgTypes, List<Object> constructorArgs) {
      try {
        Constructor<T> constructor;
        if (constructorArgTypes == null || constructorArgs == null) {
          constructor = type.getDeclaredConstructor();
          if (!constructor.isAccessible()) {
            constructor.setAccessible(true);
          }
          return constructor.newInstance();
        }
        constructor = type.getDeclaredConstructor(constructorArgTypes.toArray(new Class[constructorArgTypes.size()]));
        if (!constructor.isAccessible()) {
          constructor.setAccessible(true);
        }
        return constructor.newInstance(constructorArgs.toArray(new Object[constructorArgs.size()]));
      } catch (Exception e) {
        StringBuilder argTypes = new StringBuilder();
        if (constructorArgTypes != null && !constructorArgTypes.isEmpty()) {
          for (Class<?> argType : constructorArgTypes) {
            argTypes.append(argType.getSimpleName());
            argTypes.append(",");
          }
          argTypes.deleteCharAt(argTypes.length() - 1); // remove trailing ,
        }
        StringBuilder argValues = new StringBuilder();
        if (constructorArgs != null && !constructorArgs.isEmpty()) {
          for (Object argValue : constructorArgs) {
            argValues.append(String.valueOf(argValue));
            argValues.append(",");
          }
          argValues.deleteCharAt(argValues.length() - 1); // remove trailing ,
        }
        throw new ReflectionException("Error instantiating " + type + " with invalid types (" + argTypes + ") or values (" + argValues + "). Cause: " + e, e);
      }
    }
  
    protected Class<?> resolveInterface(Class<?> type) {
      Class<?> classToCreate;
      if (type == List.class || type == Collection.class || type == Iterable.class) {
        classToCreate = ArrayList.class;
      } else if (type == Map.class) {
        classToCreate = HashMap.class;
     } else if (type == SortedSet.class) { // issue #510 Collections Support
       classToCreate = TreeSet.class;
     } else if (type == Set.class) {
       classToCreate = HashSet.class;
     } else {
       classToCreate = type;
     }
     return classToCreate;
   }
 
   @Override
   public <T> boolean isCollection(Class<T> type) {
     return Collection.class.isAssignableFrom(type);
   }
 
 }