/*
    * Copyright (c) 2016 ingenieux Labs
    *
    * 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 br.com.ingenieux.mojo.beanstalk.config;
  
  import com.amazonaws.services.elasticbeanstalk.model.ApplicationDescription;
  import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationsRequest;
  import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationsResult;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  
  import java.util.List;
  
  import br.com.ingenieux.mojo.beanstalk.AbstractBeanstalkMojo;
  
  import static java.lang.String.format;
  
  /**
   * Describes Available Configuration Templates
   *
   * @author Aldrin Leal
   * @since 1.0-SNAPSHOT
   */
  @Mojo(name = "list-configuration-templates", requiresDirectInvocation = true)
  public class ListConfigurationTemplatesMojo extends AbstractBeanstalkMojo {
  
    @Parameter(property = "beanstalk.applicationName", defaultValue = "${project.artifactId}", required = true)
    protected String applicationName;
  
    @Override
    protected Object executeInternal() throws MojoExecutionException, MojoFailureException {
      DescribeApplicationsRequest req = new DescribeApplicationsRequest().withApplicationNames(applicationName);
  
      DescribeApplicationsResult apps = getService().describeApplications(req);
  
      List<ApplicationDescription> applications = apps.getApplications();
  
      if (applications.isEmpty()) {
        String errorMessage = "Application ('" + applicationName + "') not found!";
  
        getLog().warn(errorMessage);
  
        throw new MojoFailureException(errorMessage);
      }
  
      ApplicationDescription desc = applications.get(0);
  
      List<String> configTemplates = desc.getConfigurationTemplates();
  
      getLog().info(format("There are %d config templates", configTemplates.size()));
  
      return configTemplates;
    }
  }