<?php

/**
 * Copyright 2019 Huawei Technologies Co.,Ltd.
 * 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.
 *
 */

namespace Obs;

use Obs\Internal\Signature\DefaultSignature;
use Obs\Log\ObsLog;
use Obs\Internal\Common\SdkCurlFactory;
use Obs\Internal\Common\SdkStreamHandler;
use Obs\Internal\Common\Model;
use Monolog\Logger;
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\Handler\CurlHandler;
use GuzzleHttp\Handler\CurlMultiHandler;
use GuzzleHttp\Handler\Proxy;
use GuzzleHttp\Promise\Promise;
use Obs\Internal\Resource\Constants;


define('DEBUG', Logger::DEBUG);
define('INFO', Logger::INFO);
define('NOTICE', Logger::NOTICE);
define('WARNING', Logger::WARNING);
define('WARN', Logger::WARNING);
define('ERROR', Logger::ERROR);
define('CRITICAL', Logger::CRITICAL);
define('ALERT', Logger::ALERT);
define('EMERGENCY', Logger::EMERGENCY);

/**
 * @method Model createPostSignature(array $args = []);
// * @method Model createSignedUrl(array $args = []);
 * @method Model createBucket(array $args = []);
 * @method Model listBuckets();
 * @method Model deleteBucket(array $args = []);
 * @method Model listObjects(array $args = []);
 * @method Model listVersions(array $args = []);
 * @method Model headBucket(array $args = []);
 * @method Model getBucketMetadata(array $args = []);
 * @method Model getBucketLocation(array $args = []);
 * @method Model getBucketStorageInfo(array $args = []);
 * @method Model setBucketQuota(array $args = []);
 * @method Model getBucketQuota(array $args = []);
 * @method Model setBucketStoragePolicy(array $args = []);
 * @method Model getBucketStoragePolicy(array $args = []);
 * @method Model setBucketAcl(array $args = []);
 * @method Model getBucketAcl(array $args = []);
 * @method Model setBucketLogging(array $args = []);
 * @method Model getBucketLogging(array $args = []);
 * @method Model setBucketPolicy(array $args = []);
 * @method Model getBucketPolicy(array $args = []);
 * @method Model deleteBucketPolicy(array $args = []);
 * @method Model setBucketLifecycle(array $args = []);
 * @method Model getBucketLifecycle(array $args = []);
 * @method Model deleteBucketLifecycle(array $args = []);
 * @method Model setBucketWebsite(array $args = []);
 * @method Model getBucketWebsite(array $args = []);
 * @method Model deleteBucketWebsite(array $args = []);
 * @method Model setBucketVersioning(array $args = []);
 * @method Model getBucketVersioning(array $args = []);
 * @method Model setBucketCors(array $args = []);
 * @method Model getBucketCors(array $args = []);
 * @method Model deleteBucketCors(array $args = []);
 * @method Model setBucketNotification(array $args = []);
 * @method Model getBucketNotification(array $args = []);
 * @method Model setBucketTagging(array $args = []);
 * @method Model getBucketTagging(array $args = []);
 * @method Model deleteBucketTagging(array $args = []);
 * @method Model optionsBucket(array $args = []);
 *
 * @method Model putObject(array $args = []);
 * @method Model getObject(array $args = []);
 * @method Model copyObject(array $args = []);
 * @method Model deleteObject(array $args = []);
 * @method Model deleteObjects(array $args = []);
 * @method Model getObjectMetadata(array $args = []);
 * @method Model setObjectAcl(array $args = []);
 * @method Model getObjectAcl(array $args = []);
 * @method Model initiateMultipartUpload(array $args = []);
 * @method Model uploadPart(array $args = []);
 * @method Model copyPart(array $args = []);
 * @method Model listParts(array $args = []);
 * @method Model completeMultipartUpload(array $args = []);
 * @method Model abortMultipartUpload(array $args = []);
 * @method Model listMultipartUploads(array $args = []);
 * @method Model optionsObject(array $args = []);
 * @method Model restoreObject(array $args = []);
 *
 * @method Promise createBucketAsync(array $args = [], callable $callback);
 * @method Promise listBucketsAsync(callable $callback);
 * @method Promise deleteBucketAsync(array $args = [], callable $callback);
 * @method Promise listObjectsAsync(array $args = [], callable $callback);
 * @method Promise listVersionsAsync(array $args = [], callable $callback);
 * @method Promise headBucketAsync(array $args = [], callable $callback);
 * @method Promise getBucketMetadataAsync(array $args = [], callable $callback);
 * @method Promise getBucketLocationAsync(array $args = [], callable $callback);
 * @method Promise getBucketStorageInfoAsync(array $args = [], callable $callback);
 * @method Promise setBucketQuotaAsync(array $args = [], callable $callback);
 * @method Promise getBucketQuotaAsync(array $args = [], callable $callback);
 * @method Promise setBucketStoragePolicyAsync(array $args = [], callable $callback);
 * @method Promise getBucketStoragePolicyAsync(array $args = [], callable $callback);
 * @method Promise setBucketAclAsync(array $args = [], callable $callback);
 * @method Promise getBucketAclAsync(array $args = [], callable $callback);
 * @method Promise setBucketLoggingAsync(array $args = [], callable $callback);
 * @method Promise getBucketLoggingAsync(array $args = [], callable $callback);
 * @method Promise setBucketPolicyAsync(array $args = [], callable $callback);
 * @method Promise getBucketPolicyAsync(array $args = [], callable $callback);
 * @method Promise deleteBucketPolicyAsync(array $args = [], callable $callback);
 * @method Promise setBucketLifecycleAsync(array $args = [], callable $callback);
 * @method Promise getBucketLifecycleAsync(array $args = [], callable $callback);
 * @method Promise deleteBucketLifecycleAsync(array $args = [], callable $callback);
 * @method Promise setBucketWebsiteAsync(array $args = [], callable $callback);
 * @method Promise getBucketWebsiteAsync(array $args = [], callable $callback);
 * @method Promise deleteBucketWebsiteAsync(array $args = [], callable $callback);
 * @method Promise setBucketVersioningAsync(array $args = [], callable $callback);
 * @method Promise getBucketVersioningAsync(array $args = [], callable $callback);
 * @method Promise setBucketCorsAsync(array $args = [], callable $callback);
 * @method Promise getBucketCorsAsync(array $args = [], callable $callback);
 * @method Promise deleteBucketCorsAsync(array $args = [], callable $callback);
 * @method Promise setBucketNotificationAsync(array $args = [], callable $callback);
 * @method Promise getBucketNotificationAsync(array $args = [], callable $callback);
 * @method Promise setBucketTaggingAsync(array $args = [], callable $callback);
 * @method Promise getBucketTaggingAsync(array $args = [], callable $callback);
 * @method Promise deleteBucketTaggingAsync(array $args = [], callable $callback);
 * @method Promise optionsBucketAsync(array $args = [], callable $callback);
 *
 * @method Promise putObjectAsync(array $args = [], callable $callback);
 * @method Promise getObjectAsync(array $args = [], callable $callback);
 * @method Promise copyObjectAsync(array $args = [], callable $callback);
 * @method Promise deleteObjectAsync(array $args = [], callable $callback);
 * @method Promise deleteObjectsAsync(array $args = [], callable $callback);
 * @method Promise getObjectMetadataAsync(array $args = [], callable $callback);
 * @method Promise setObjectAclAsync(array $args = [], callable $callback);
 * @method Promise getObjectAclAsync(array $args = [], callable $callback);
 * @method Promise initiateMultipartUploadAsync(array $args = [], callable $callback);
 * @method Promise uploadPartAsync(array $args = [], callable $callback);
 * @method Promise copyPartAsync(array $args = [], callable $callback);
 * @method Promise listPartsAsync(array $args = [], callable $callback);
 * @method Promise completeMultipartUploadAsync(array $args = [], callable $callback);
 * @method Promise abortMultipartUploadAsync(array $args = [], callable $callback);
 * @method Promise listMultipartUploadsAsync(array $args = [], callable $callback);
 * @method Promise optionsObjectAsync(array $args = [], callable $callback);
 * @method Promise restoreObjectAsync(array $args = [], callable $callback);
 *
 */
class ObsImageClient
{

    const SDK_VERSION = '3.20.5';

    const AclPrivate = 'private';
    const AclPublicRead = 'public-read';
    const AclPublicReadWrite = 'public-read-write';
    const AclPublicReadDelivered = 'public-read-delivered';
    const AclPublicReadWriteDelivered = 'public-read-write-delivered';

    const AclAuthenticatedRead = 'authenticated-read';
    const AclBucketOwnerRead = 'bucket-owner-read';
    const AclBucketOwnerFullControl = 'bucket-owner-full-control';
    const AclLogDeliveryWrite = 'log-delivery-write';

    const StorageClassStandard = 'STANDARD';
    const StorageClassWarm = 'WARM';
    const StorageClassCold = 'COLD';

    const PermissionRead = 'READ';
    const PermissionWrite = 'WRITE';
    const PermissionReadAcp = 'READ_ACP';
    const PermissionWriteAcp = 'WRITE_ACP';
    const PermissionFullControl = 'FULL_CONTROL';

    const AllUsers = 'Everyone';

    const GroupAllUsers = 'AllUsers';
    const GroupAuthenticatedUsers = 'AuthenticatedUsers';
    const GroupLogDelivery = 'LogDelivery';

    const RestoreTierExpedited = 'Expedited';
    const RestoreTierStandard = 'Standard';
    const RestoreTierBulk = 'Bulk';

    const GranteeGroup = 'Group';
    const GranteeUser = 'CanonicalUser';

    const CopyMetadata = 'COPY';
    const ReplaceMetadata = 'REPLACE';

    const SignatureV2 = 'v2';
    const SignatureV4 = 'v4';
    const SigantureObs = 'obs';

    const ObjectCreatedAll = 'ObjectCreated:*';
    const ObjectCreatedPut = 'ObjectCreated:Put';
    const ObjectCreatedPost = 'ObjectCreated:Post';
    const ObjectCreatedCopy = 'ObjectCreated:Copy';
    const ObjectCreatedCompleteMultipartUpload = 'ObjectCreated:CompleteMultipartUpload';
    const ObjectRemovedAll = 'ObjectRemoved:*';
    const ObjectRemovedDelete = 'ObjectRemoved:Delete';
    const ObjectRemovedDeleteMarkerCreated = 'ObjectRemoved:DeleteMarkerCreated';

    use Internal\SendRequestTrait;
    use Internal\GetResponseTrait;

    private $factorys;
    private $project_name;//项目名称
    private $project_sub_name;//项目二级路径
    private $custom_domain;//指定域名替换默认域名

    public function __construct(array $config = [])
    {
        $this->factorys = [];

        $this->ak = strval($config['key']);
        $this->sk = strval($config['secret']);

        if (isset($config['project_name'])) {
            $this->project_name = strval($config['project_name']);
        }

        if (isset($config['project_sub_name'])) {
            $this->project_sub_name = strval($config['project_sub_name']);
        }

        if (isset($config['custom_domain'])) {
            $this->custom_domain = strval($config['custom_domain']);
        }

        if (isset($config['security_token'])) {
            $this->securityToken = strval($config['security_token']);
        }

        if (isset($config['endpoint'])) {
            $this->endpoint = trim(strval($config['endpoint']));
        }

        if ($this->endpoint === '') {
            throw new \RuntimeException('endpoint is not set');
        }

        while ($this->endpoint[strlen($this->endpoint) - 1] === '/') {
            $this->endpoint = substr($this->endpoint, 0, strlen($this->endpoint) - 1);
        }

        if (strpos($this->endpoint, 'http') !== 0) {
            $this->endpoint = 'https://' . $this->endpoint;
        }

        if (isset($config['signature'])) {
            $this->signature = strval($config['signature']);
        }

        if (isset($config['path_style'])) {
            $this->pathStyle = $config['path_style'];
        }

        if (isset($config['region'])) {
            $this->region = strval($config['region']);
        }

        if (isset($config['ssl_verify'])) {
            $this->sslVerify = $config['ssl_verify'];
        } else if (isset($config['ssl.certificate_authority'])) {
            $this->sslVerify = $config['ssl.certificate_authority'];
        }

        if (isset($config['max_retry_count'])) {
            $this->maxRetryCount = intval($config['max_retry_count']);
        }

        if (isset($config['timeout'])) {
            $this->timeout = intval($config['timeout']);
        }

        if (isset($config['socket_timeout'])) {
            $this->socketTimeout = intval($config['socket_timeout']);
        }

        if (isset($config['connect_timeout'])) {
            $this->connectTimeout = intval($config['connect_timeout']);
        }

        if (isset($config['chunk_size'])) {
            $this->chunkSize = intval($config['chunk_size']);
        }

        if (isset($config['exception_response_mode'])) {
            $this->exceptionResponseMode = $config['exception_response_mode'];
        }

        if (isset($config['is_cname'])) {
            $this->isCname = $config['is_cname'];
        }

        $host = parse_url($this->endpoint)['host'];
        if (filter_var($host, FILTER_VALIDATE_IP) !== false) {
            $this->pathStyle = true;
        }

        $handler = self::choose_handler($this);

        $this->httpClient = new Client(
            [
                'timeout' => 0,
                'read_timeout' => $this->socketTimeout,
                'connect_timeout' => $this->connectTimeout,
                'allow_redirects' => false,
                'verify' => $this->sslVerify,
                'expect' => false,
                'handler' => HandlerStack::create($handler),
                'curl' => [
                    CURLOPT_BUFFERSIZE => $this->chunkSize
                ]
            ]
        );

    }

    public function __destruct()
    {
        $this->close();
    }

    public function refresh($key, $secret, $security_token = false)
    {
        $this->ak = strval($key);
        $this->sk = strval($secret);
        if ($security_token) {
            $this->securityToken = strval($security_token);
        }
    }

    /**
     * Get the default User-Agent string to use with Guzzle
     *
     * @return string
     */
    private static function default_user_agent()
    {
        static $defaultAgent = '';
        if (!$defaultAgent) {
            $defaultAgent = 'obs-sdk-php/' . self::SDK_VERSION;
        }

        return $defaultAgent;
    }

    /**
     * Factory method to create a new Obs client using an array of configuration options.
     *
     * @param array $config Client configuration data
     *
     * @return ObsClient
     */
    public static function factory(array $config = [])
    {
        return new ObsClient($config);
    }

    public function close()
    {
        if ($this->factorys) {
            foreach ($this->factorys as $factory) {
                $factory->close();
            }
        }
    }

    public function initLog(array $logConfig = [])
    {
        ObsLog::initLog($logConfig);

        $msg = [];
        $msg[] = '[OBS SDK Version=' . self::SDK_VERSION;
        $msg[] = 'Endpoint=' . $this->endpoint;
        $msg[] = 'Access Mode=' . ($this->pathStyle ? 'Path' : 'Virtual Hosting') . ']';

        ObsLog::commonLog(WARNING, implode("];[", $msg));
    }

    private static function choose_handler($obsclient)
    {
        $handler = null;
        if (function_exists('curl_multi_exec') && function_exists('curl_exec')) {
            $f1 = new SdkCurlFactory(50);
            $f2 = new SdkCurlFactory(3);
            $obsclient->factorys[] = $f1;
            $obsclient->factorys[] = $f2;
            $handler = Proxy::wrapSync(new CurlMultiHandler(['handle_factory' => $f1]), new CurlHandler(['handle_factory' => $f2]));
        } elseif (function_exists('curl_exec')) {
            $f = new SdkCurlFactory(3);
            $obsclient->factorys[] = $f;
            $handler = new CurlHandler(['handle_factory' => $f]);
        } elseif (function_exists('curl_multi_exec')) {
            $f = new SdkCurlFactory(50);
            $obsclient->factorys[] = $f;
            $handler = new CurlMultiHandler(['handle_factory' => $f]);
        }

        if (ini_get('allow_url_fopen')) {
            $handler = $handler
                ? Proxy::wrapStreaming($handler, new SdkStreamHandler())
                : new SdkStreamHandler();
        } elseif (!$handler) {
            throw new \RuntimeException('GuzzleHttp requires cURL, the '
                . 'allow_url_fopen ini setting, or a custom HTTP handler.');
        }

        return $handler;
    }

    public function createSignedUrl(array $args=[])
    {
        if (strcasecmp($this -> signature, 'v4') === 0) {
            return $this -> createV4SignedUrl($args);
        }
        return $this->createCommonSignedUrl($this->signature,$args);
    }

    private function createCommonSignedUrl(string $signature,array $args=[]) {
        if(!isset($args['Method'])){
            $obsException = new ObsException('Method param must be specified, allowed values: GET | PUT | HEAD | POST | DELETE | OPTIONS');
            $obsException-> setExceptionType('client');
            throw $obsException;
        }
        $method = strval($args['Method']);
        $bucketName = isset($args['Bucket'])? strval($args['Bucket']): null;
        $objectKey =  isset($args['Key'])? strval($args['Key']): null;
        $specialParam = isset($args['SpecialParam'])? strval($args['SpecialParam']): null;
        $expires = isset($args['Expires']) && is_numeric($args['Expires']) ? intval($args['Expires']): 300;
        $objectKey = $this->genKey($objectKey);

        $headers = [];
        if(isset($args['Headers']) && is_array($args['Headers']) ){
            foreach ($args['Headers'] as $key => $val){
                if(is_string($key) && $key !== ''){
                    $headers[$key] = $val;
                }
            }
        }


        $queryParams = [];
        if(isset($args['QueryParams']) && is_array($args['QueryParams']) ){
            foreach ($args['QueryParams'] as $key => $val){
                if(is_string($key) && $key !== ''){
                    $queryParams[$key] = $val;
                }
            }
        }

        $constants = Constants::selectConstants($signature);
        if($this->securityToken && !isset($queryParams[$constants::SECURITY_TOKEN_HEAD])){
            $queryParams[$constants::SECURITY_TOKEN_HEAD] = $this->securityToken;
        }

        $sign = new DefaultSignature($this->ak, $this->sk, $this->pathStyle, $this->endpoint, $method, $this->signature, $this->securityToken, $this->isCname);

        $url = parse_url($this->endpoint);
        $host = $url['host'];

        $result = '';

        if($bucketName){
            if($this-> pathStyle){
                $result = '/' . $bucketName;
            }else{
                $host = $this->isCname ? $host : $bucketName . '.' . $host;
            }
        }

        $headers['Host'] = $this->custom_domain ?? $host;

        if($objectKey){
            $objectKey = $sign ->urlencodeWithSafe($objectKey);
            $result .= '/' . $objectKey;
        }

        $result .= '?';

        if($specialParam){
            $queryParams[$specialParam] = '';
        }

        $queryParams[$constants::TEMPURL_AK_HEAD] = $this->ak;


        if(!is_numeric($expires) || $expires < 0){
            $expires = 300;
        }
        $expires = intval($expires) + intval(microtime(true));

        $queryParams['Expires'] = strval($expires);

        $_queryParams = [];

        foreach ($queryParams as $key => $val){
            $key = $sign -> urlencodeWithSafe($key);
            $val = $sign -> urlencodeWithSafe($val);
            $_queryParams[$key] = $val;
            $result .= $key;
            if($val){
                $result .= '=' . $val;
            }
            $result .= '&';
        }

        $canonicalstring = $sign ->makeCanonicalstring($method, $headers, $_queryParams, $bucketName, $objectKey, $expires);
        $signatureContent = base64_encode(hash_hmac('sha1', $canonicalstring, $this->sk, true));

        $result .= 'Signature=' . $sign->urlencodeWithSafe($signatureContent);

        $model = new Model();
        $model['ActualSignedRequestHeaders'] = $headers;
        $model['SignedUrl'] = $url['scheme'] . '://' . ($this->custom_domain ?? $host) . ':' . (isset($url['port']) ? $url['port'] : (strtolower($url['scheme']) === 'https' ? '443' : '80')) . $result;
        return $model;
    }

    public function genKey(&$key)
    {
        if (empty($this->project_name)) {
            throw new \RuntimeException('project_name 参数有误');
        }
        $extension = explode('.', $key);
        $ext = end($extension);
        $date_ym = date('Y-m');
        $date_ymd = date('Ymd');
        $filePath = empty($this->project_sub_name) ? $this->project_name : $this->project_name . '/' . $this->project_sub_name;
        $filePath .= "/{$date_ym}/{$date_ymd}_";
        $hash_data = $this->project_name . $key . time() . mt_rand(111111, 999999);
        $filePath .= hash('sha256', $hash_data) . '.' . $ext;
        return $filePath;
    }

    /************************************************ 改造内容 *******************************************************/
    public function __call($originMethod, $args)
    {
        $method = $originMethod;

        $contents = Constants::selectRequestResource($this->signature);
        $resource = &$contents::$RESOURCE_ARRAY;
        $async = false;
        if (strpos($method, 'Async') === (strlen($method) - 5)) {
            $method = substr($method, 0, strlen($method) - 5);
            $async = true;
        }

        if (isset($resource['aliases'][$method])) {
            $method = $resource['aliases'][$method];
        }

        $method = lcfirst($method);


        $operation = isset($resource['operations'][$method]) ?
            $resource['operations'][$method] : null;

        if (!$operation) {
            ObsLog::commonLog(WARNING, 'unknow method ' . $originMethod);
            $obsException = new ObsException('unknow method ' . $originMethod);
            $obsException->setExceptionType('client');
            throw $obsException;
        }

        $start = microtime(true);
        if (!$async) {
            ObsLog::commonLog(INFO, 'enter method ' . $originMethod . '...');
            $model = new Model();
            $model['method'] = $method;
            $params = empty($args) ? [] : $args[0];
            $this->_checkParams($params);//house365::校验参数，自动生成文件路径名
            $this->checkMimeType($method, $params);
            $this->doRequest($model, $operation, $params);
            ObsLog::commonLog(INFO, 'obsclient cost ' . round(microtime(true) - $start, 3) * 1000 . ' ms to execute ' . $originMethod);
            unset($model['method']);
            $this->_replaceDomain($model);//house365::替换域名
            return $model;
        } else {
            if (empty($args) || !(is_callable($callback = $args[count($args) - 1]))) {
                ObsLog::commonLog(WARNING, 'async method ' . $originMethod . ' must pass a CallbackInterface as param');
                $obsException = new ObsException('async method ' . $originMethod . ' must pass a CallbackInterface as param');
                $obsException->setExceptionType('client');
                throw $obsException;
            }
            ObsLog::commonLog(INFO, 'enter method ' . $originMethod . '...');
            $params = count($args) === 1 ? [] : $args[0];
            $this->checkMimeType($method, $params);
            $model = new Model();
            $model['method'] = $method;
            return $this->doRequestAsync($model, $operation, $params, $callback, $start, $originMethod);
        }
    }

    //house365::校验参数，自动生成文件路径名
    private function _checkParams(&$params)
    {
        if (!isset($params['Key'])) {
            throw new \RuntimeException('Key 参数有误');
        }
        if (empty($this->project_name)) {
            throw new \RuntimeException('project_name 参数有误');
        }
        $extension = explode('.', $params['Key']);
        $ext = end($extension);
        $date_ym = date('Y-m');
        $date_ymd = date('Ymd');
        $filePath = empty($this->project_sub_name) ? $this->project_name : $this->project_name . '/' . $this->project_sub_name;
        $filePath .= "/{$date_ym}/{$date_ymd}_";
        $hash_data = $this->project_name . $params['Key'] . time() . mt_rand(111111, 999999);
        $filePath .= hash('sha256', $hash_data) . '.' . $ext;
        $params['Key'] = $filePath;
    }

    //house365::替换域名
    private function _replaceDomain(&$model)
    {
        if ($this->custom_domain && $model['ObjectURL']) {
            $origin_url = $model['ObjectURL'];
            $url_arr = parse_url($origin_url);
            if (!empty($url_arr['host'])) {
                $url_ = $url_arr['scheme'] . '://' . $this->custom_domain . $url_arr['path'];
                $url_ .= isset($url_arr['query']) ? '?' . $url_arr['query'] : '';
                $model['ObjectURL'] = $url_;
            }
        }
    }
}