<?php
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

// snippet-start:[cloudfront.php.getinvalidation.complete]
// snippet-start:[cloudfront.php.getinvalidation.import]
require 'vendor/autoload.php';

use Aws\Exception\AwsException;

// snippet-end:[cloudfront.php.getinvalidation.import]

/* ////////////////////////////////////////////////////////////////////////////
 * Purpose: Gets information about an invalidation for an
 * Amazon CloudFront distribution.
 *
 * Prerequisites: An existing Amazon CloudFront distribution and a
 * corresponding invalidation.
 *
 * Inputs:
 * - $cloudFrontClient: An initialized AWS SDK for PHP SDK client
 *   for CloudFront.
 * - $distributionId: The distribution's ID.
 * - $invalidationId: The invalidation ID.
 *
 * Returns: Information about the invalidation; otherwise,
 * the error message.
 * ///////////////////////////////////////////////////////////////////////// */

// snippet-start:[cloudfront.php.getinvalidation.main]
function getInvalidation($cloudFrontClient, $distributionId, $invalidationId)
{
    try {
        $result = $cloudFrontClient->getInvalidation([
            'DistributionId' => $distributionId,
            'Id' => $invalidationId,
        ]);

        $message = '';

        if (isset($result['Invalidation']['Status'])) {
            $message = 'The status for the invalidation with the ID of ' .
                $result['Invalidation']['Id'] . ' is ' .
                $result['Invalidation']['Status'];
        }

        if (isset($result['@metadata']['effectiveUri'])) {
            $message .= ', and the effective URI is ' .
                $result['@metadata']['effectiveUri'] . '.';
        } else {
            $message = 'Error: Could not get information about ' .
                'the invalidation. The invalidation\'s status ' .
                'was not available.';
        }

        return $message;
    } catch (AwsException $e) {
        return 'Error: ' . $e->getAwsErrorMessage();
    }
}

function getsAnInvalidation()
{
    $distributionId = 'E1BTGP2EXAMPLE';
    $invalidationId = 'I1CDEZZEXAMPLE';

    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    echo getInvalidation($cloudFrontClient, $distributionId, $invalidationId);
}

// Uncomment the following line to run this code in an AWS account.
// getsAnInvalidation();
// snippet-end:[cloudfront.php.getinvalidation.main]
// snippet-end:[cloudfront.php.getinvalidation.complete]
// snippet-sourceauthor:[pccornel (AWS)]