/**

  * Copyright (c) 2012-2014, jcabi.com

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met: 1) Redistributions of source code must retain the above

  * copyright notice, this list of conditions and the following

  * disclaimer. 2) Redistributions in binary form must reproduce the above

  * copyright notice, this list of conditions and the following

  * disclaimer in the documentation and/or other materials provided

  * with the distribution. 3) Neither the name of the jcabi.com nor

  * the names of its contributors may be used to endorse or promote

  * products derived from this software without specific prior written

  * permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT

  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL

  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  */

 package com.jcabi.beanstalk.maven.plugin;

 import com.amazonaws.services.elasticbeanstalk.AWSElasticBeanstalk;

 import com.amazonaws.services.elasticbeanstalk.model.ApplicationVersionDescription;

 import com.amazonaws.services.elasticbeanstalk.model.CreateApplicationVersionRequest;

 import com.amazonaws.services.elasticbeanstalk.model.CreateApplicationVersionResult;

 import com.amazonaws.services.elasticbeanstalk.model.DeleteApplicationVersionRequest;

 import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationVersionsRequest;

 import com.amazonaws.services.elasticbeanstalk.model.DescribeApplicationVersionsResult;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.log.Logger;

 import javax.validation.constraints.NotNull;

 import lombok.EqualsAndHashCode;

 /**

  * EBT application version.

  *

  * @author Yegor Bugayenko (yegor@tpc2.com)

  * @version $Id$

  * @since 0.3

  */

 @EqualsAndHashCode(of = { "client", "application", "bundle" })

 @Loggable(Loggable.DEBUG)

 final class OverridingVersion implements Version {

     /**

      * AWS beanstalk client.

      */

     private final transient AWSElasticBeanstalk client;

     /**

      * Application name.

      */

     private final transient String application;

     /**

      * Bundle with a file.

      */

     private final transient Bundle bundle;

     /**

      * Public ctor.

      * @param clnt Client

      * @param app Application name

      * @param bndl Bundle

      */

     protected OverridingVersion(@NotNull final AWSElasticBeanstalk clnt,

         @NotNull final String app, @NotNull final Bundle bndl) {

         this.client = clnt;

         this.application = app;

         this.bundle = bndl;

     }

     /**

      * {@inheritDoc}

      */

     @Override

     public String toString() {

         return this.bundle.name();

     }

     /**

      * {@inheritDoc}

      */

     @Override

     public String label() {

         if (this.exists()) {

             Logger.info(

                 this,

                 "Version '%s' already exists for '%s'",

                 this.bundle.name(),

                 this.application

             );

         } else {

             final CreateApplicationVersionResult res =

                 this.client.createApplicationVersion(

                     new CreateApplicationVersionRequest()

                         .withApplicationName(this.application)

                         .withVersionLabel(this.bundle.name())

                         .withSourceBundle(this.bundle.location())

                         .withDescription(this.bundle.etag())

                 );

             final ApplicationVersionDescription desc =

                 res.getApplicationVersion();

             Logger.info(

                 this,

                 "Version '%s' created for '%s' (%s): '%s'",

                 desc.getVersionLabel(),

                 desc.getApplicationName(),

                 this.bundle.location(),

                 desc.getDescription()

             );

             if (!desc.getVersionLabel().equals(this.bundle.name())) {

                 throw new DeploymentException(

                     String.format(

                         "version label is '%s' while '%s' expected",

                         desc.getVersionLabel(),

                         this.bundle.name()

                     )

                 );

             }

         }

         return this.bundle.name();

     }

     /**

      * This label exists already?

      * @return Yes or no

      */

     private boolean exists() {

         final DescribeApplicationVersionsResult res =

             this.client.describeApplicationVersions(

                 new DescribeApplicationVersionsRequest()

                     .withApplicationName(this.application)

                     .withVersionLabels(this.bundle.name())

             );

         boolean exists = false;

         if (res.getApplicationVersions().isEmpty()) {

             Logger.info(

                 this,

                 "Version '%s' is absent in '%s'",

                 this.bundle.name(),

                 this.application

             );

         } else {

             final ApplicationVersionDescription ver =

                 res.getApplicationVersions().get(0);

             if (ver.getSourceBundle().equals(this.bundle.location())

                 && ver.getDescription().equals(this.bundle.etag())) {

                 Logger.info(

                     this,

                     "Version '%s' already exists for '%s', etag='%s'",

                     ver.getVersionLabel(),

                     ver.getApplicationName(),

                     ver.getDescription()

                 );

                 exists = true;

             } else {

                 this.client.deleteApplicationVersion(

                     new DeleteApplicationVersionRequest()

                         .withApplicationName(this.application)

                         .withVersionLabel(this.bundle.name())

                 );

                 Logger.info(

                     this,

                     // @checkstyle LineLength (1 line)

                     "Version '%s' deleted in '%s' because of its outdated S3 location",

                     this.bundle.name(),

                     this.application

                 );

             }

         }

         return exists;

     }

 }