package com.lexicalscope.jewel.cli;

 import static com.lexicalscope.jewel.cli.parser.DefaultArgumentParserFactory.createDefaultArgumentParser;

 import static com.lexicalscope.jewel.cli.validation.DefaultValidatorFactory.createDefaultValidator;

 import com.lexicalscope.fluentreflection.FluentClass;

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

 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.

  */

 abstract class AbstractCliImpl<O> implements Cli<O> {

     private final FluentClass<O> klass;

     private final OptionsSpecification<O> optionsSpecification;

     public AbstractCliImpl(

             final FluentClass<O> klass,

             final OptionsSpecification<O> optionsSpecification) {

         this.klass = klass;

         this.optionsSpecification = optionsSpecification;

     }

     @Override public O parseArguments(final String... arguments) throws ArgumentValidationException {

         final ArgumentCollectionBuilder parsedArguments = new ArgumentCollectionBuilder();

         createDefaultArgumentParser().parseArguments(parsedArguments, arguments);

         return argumentPresenter(klass, optionsSpecification).presentArguments(parsedArguments.processArguments(createDefaultValidator(optionsSpecification)));

     }

     protected abstract ArgumentPresenterImpl<O> argumentPresenter(

             FluentClass<O> klass,

             OptionsSpecification<O> specification);

     @Override public String getHelpMessage() {

         return optionsSpecification.toString();

     }

     CliSpecification getSpecification() {

         return optionsSpecification;

     }

     @Override public void describeTo(final HelpMessage helpMessage) {

         optionsSpecification.describeTo(helpMessage);

     }

 }