package com.lexicalscope.jewel.cli;

 import static com.lexicalscope.fluentreflection.ReflectionMatchers.annotatedWith;

 import java.util.Map;

 import com.lexicalscope.fluentreflection.FluentClass;

 import com.lexicalscope.fluentreflection.FluentMethod;

 import com.lexicalscope.jewel.cli.specification.OptionsSpecification;

 /*

  * Copyright 2011 Tim Wood

  *

  * 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.

  */

 class InstanceArgumentPresentingStrategy<O> implements ArgumentPresentingStrategy<O> {

     private final O options;

     private final FluentClass<O> klass;

     private final OptionsSpecification<O> specification;

     public InstanceArgumentPresentingStrategy(

             final OptionsSpecification<O> specification,

             final FluentClass<O> klass,

             final O options) {

         this.specification = specification;

         this.klass = klass;

         this.options = options;

     }

     @Override public O presentArguments(final Map<String, Object> argumentMap) {

         for (final FluentMethod reflectedMethod : klass.methods(annotatedWith(Option.class))) {

             final boolean isBoolean = specification.getSpecification(reflectedMethod).isBoolean();

             setValueOnOptions(argumentMap, reflectedMethod, isBoolean);

         }

         for (final FluentMethod reflectedMethod : klass.methods(annotatedWith(Unparsed.class))) {

             setValueOnOptions(argumentMap, reflectedMethod, false);

         }

         return options;

     }

     private void setValueOnOptions(

             final Map<String, Object> argumentMap,

             final FluentMethod reflectedMethod,

             final boolean isBoolean) {

         if (argumentMap.containsKey(reflectedMethod.property()))

         {

             if (isBoolean)

             {

                 reflectedMethod.call(options, argumentMap.containsKey(reflectedMethod.property()));

             }

             else if (argumentMap.get(reflectedMethod.property()) != null)

             {

                 reflectedMethod.call(options, argumentMap.get(reflectedMethod.property()));

             }

         }

     }

 }