/*
    * 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.env;
  
  import com.amazonaws.services.elasticbeanstalk.model.DescribeEnvironmentsRequest;
  import com.amazonaws.services.elasticbeanstalk.model.DescribeEnvironmentsResult;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.ObjectWriter;
  
  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.io.File;
  
  import br.com.ingenieux.mojo.beanstalk.AbstractBeanstalkMojo;
  
  /**
   * Describe running environments
   *
   * See the docs for the <a href= "http://docs.amazonwebservices.com/elasticbeanstalk/latest/api/API_DescribeEnvironments.html"
   * >DescribeEnvironments API</a> call.
   *
   * @author Aldrin Leal
   * @since 0.1.0
   */
  @Mojo(name = "describe-environments", requiresDirectInvocation = true)
  public class DescribeEnvironmentsMojo extends AbstractBeanstalkMojo {
  
    /**
     * Beanstalk Application Name
     */
    @Parameter(property = "beanstalk.applicationName", defaultValue = "${project.artifactId}", required = true)
    protected String applicationName;
  
    /**
     * Include Deleted?
     */
    @Parameter(property = "beanstalk.includeDeleted")
    boolean includeDeleted;
  
    /**
     * Output file (Optional)
     */
    @Parameter(property = "beanstalk.outputFile")
    File outputFile;
  
    @Override
    protected Object executeInternal() throws MojoExecutionException, MojoFailureException {
      DescribeEnvironmentsRequest req = new DescribeEnvironmentsRequest();
  
      req.setApplicationName(applicationName);
      req.setIncludeDeleted(includeDeleted);
  
      // TODO add environmentNames / environmentIds / includeDeletedBackTo
  
      DescribeEnvironmentsResult result = getService().describeEnvironments(req);
  
      if (null != outputFile) {
        getLog().info("Writing results into " + outputFile.getName());
  
        try {
          ObjectMapper objectMapper = new ObjectMapper();
  
          ObjectWriter writer = objectMapper.writerWithDefaultPrettyPrinter();
  
          writer.writeValue(outputFile, result.getEnvironments());
        } catch (Exception e) {
          throw new RuntimeException(e);
        }
  
        return null;
      }
  
      return result;
    }
  }