<?php

$config=[
    'access_key_id'=>'',
    'access_key_secret'=>'',
    'disk_id'=>'',
    'region_id'=>'cn-hangzhou',
];

if ($_SERVER['REMOTE_ADDR']!='127.0.0.1')
    die();

require 'vendor/autoload.php';

use AlibabaCloud\Client\AlibabaCloud;
use AlibabaCloud\Client\Exception\ClientException;
use AlibabaCloud\Client\Exception\ServerException;

// Download：https://github.com/aliyun/openapi-sdk-php
// Usage：https://github.com/aliyun/openapi-sdk-php/blob/master/README.md

AlibabaCloud::accessKeyClient($config['access_key_id'], $config['access_key_secret'])
// use STS Token
// AlibabaCloud::stsClient('<your-access-key-id>', '<your-access-key-secret>', '<your-sts-token>')   
                        ->regionId($config['region_id'])
                        ->asDefaultClient();

try {
    //查询快照
    $result = AlibabaCloud::rpc()
                          ->product('SWAS-OPEN')
                          // ->scheme('https') // https | http
                          ->version('2020-06-01')
                          ->action('ListSnapshots')
                          ->method('POST')
                          ->host("swas.{$config['region_id']}.aliyuncs.com")
                          ->options([
                                        'query' => [
                                          'RegionId' => $config['region_id'],
                                        ],
                                    ])
                          ->request();
    //echo json_encode($result->toArray());

    $name=(date("w")==1?'week-':'day-');

    //删除多余快照
    foreach($result['Snapshots'] as $i=>$snapshot){
        if ($snapshot['SourceDiskId']==$config['disk_id'] && stripos($snapshot['SnapshotName'],$name)===0){
                $result = AlibabaCloud::rpc()
                                  ->product('SWAS-OPEN')
                                  // ->scheme('https') // https | http
                                  ->version('2020-06-01')
                                  ->action('DeleteSnapshot')
                                  ->method('POST')
                                  ->host("swas.{$config['region_id']}.aliyuncs.com")
                                  ->options([
                                                'query' => [
                                                  'RegionId' => $config['region_id'],
                                                  'SnapshotId' => $snapshot['SnapshotId'],
                                                ],
                                            ])
                                  ->request();

        }
    }
    
    //新建快照
    $result = AlibabaCloud::rpc()
                          ->product('SWAS-OPEN')
                          // ->scheme('https') // https | http
                          ->version('2020-06-01')
                          ->action('CreateSnapshot')
                          ->method('POST')
                          ->host("swas.{$config['region_id']}.aliyuncs.com")
                          ->options([
                                        'query' => [
                                          'RegionId' => $config['region_id'],
                                          'DiskId' => $config['disk_id'],
                                          'SnapshotName' => $name.date("Y-m-d-H-i-s"),
                                        ],
                                    ])
                          ->request();
    //echo json_encode($result->toArray());

} catch (ClientException $e) {
    echo $e->getErrorMessage() . PHP_EOL;
} catch (ServerException $e) {
    echo $e->getErrorMessage() . PHP_EOL;
}