/*

  * Copyright 2012, Ryan J. McDonough

  *

  * 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.damnhandy.uri.template.impl;

 import com.damnhandy.uri.template.DefaultVarExploder;

 import com.damnhandy.uri.template.VarExploder;

 import com.damnhandy.uri.template.VarExploderException;

 /**

  *

  *

  * @author <a href="ryan@damnhandy.com">Ryan J. McDonough</a>

  * @version $Revision: 1.1 $

  */

 public final class VarExploderFactory

 {

    //private static final String DEFAULT_MSG = "";

    private VarExploderFactory()

    {

    }

    /**

     *

     *

     * @param varValue

     * @return

     */

    public static VarExploder getExploder(Object varValue, VarSpec varSpec) throws VarExploderException

    {

       if (varValue instanceof VarExploder)

       {

          return (VarExploder) varValue;

       }

 //      if (varValue.getClass().isAnnotationPresent(ExplodeWith.class))

 //      {

 //         Class<?> exploderClass = varValue.getClass().getAnnotation(ExplodeWith.class).value();

 //         return fromCustom(exploderClass, varValue, varSpec);

 //      }

       return new DefaultVarExploder(varValue);

    }

 //   private static VarExploder fromCustom(Class<?> exploderClass, Object varValue, VarSpec varSpec)

 //   {

 //      if (exploderClass.isAssignableFrom(VarExploder.class))

 //      {

 //         String msg = buildErrorMessage(

 //               exploderClass.getSimpleName() + " must be an instance of " + VarExploder.class.getSimpleName(),

 //               exploderClass, varValue, varSpec);

 //         throw new VariableExpansionException(msg);

 //      }

 //

 //      try

 //      {

 //         Constructor<?> constructor = exploderClass.getConstructor(Object.class);

 //         VarExploder exploder = (VarExploder) constructor.newInstance(varValue);

 //         return exploder;

 //      }

 //

 //      catch (IllegalArgumentException e)

 //      {

 //         throwException(DEFAULT_MSG, e, exploderClass, varValue, varSpec);

 //      }

 //      catch (NoSuchMethodException e)

 //      {

 //         throwException(DEFAULT_MSG, e, exploderClass, varValue, varSpec);

 //      }

 //      catch (InstantiationException e)

 //      {

 //         throwException(DEFAULT_MSG, e, exploderClass, varValue, varSpec);

 //      }

 //      catch (IllegalAccessException e)

 //      {

 //         throwException(DEFAULT_MSG, e, exploderClass, varValue, varSpec);

 //      }

 //      catch (InvocationTargetException e)

 //      {

 //         throwException(DEFAULT_MSG, e, exploderClass, varValue, varSpec);

 //      }

 //      return null;

 //   }

 //   private static void throwException(String message, Throwable e, Class<?> exploderClass, Object varValue,

 //         VarSpec varSpec) throws VariableExpansionException

 //   {

 //      String msg = buildErrorMessage(message, exploderClass, varValue, varSpec);

 //      throw new VariableExpansionException(msg, e);

 //   }

 //   private static String buildErrorMessage(String message, Class<?> exploderClass, Object varValue, VarSpec varSpec)

 //   {

 //      StringBuilder b = new StringBuilder();

 //      b.append(message)

 //       .append("[ varspec: ").append(varSpec)

 //       .append(" variable value:").append(varValue)

 //       .append(" exploder class: ").append(exploderClass.getName()).append("]");

 //      return b.toString();

 //   }

 }