AWS::__construct() - Code Metrics - Inspection of "Merge pull request #8 from goaround/goaround-patch..." - kamerk22/AmazonGiftCode - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 575508...521a0f )

by Kashyap

created 2021-10-03 07:22 UTC

AWS::__construct() A

↳ Parent: AWS

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	1
nc	1
nop	1
dl	0
loc	3
rs	10
c	1
b	0
f	0

<?php

/**
 * Part of the AmazonGiftCode package.
 * Author: Kashyap Merai <[email protected]>
 *
 */


namespace kamerk22\AmazonGiftCode\AWS;


use kamerk22\AmazonGiftCode\Client\Client;
use kamerk22\AmazonGiftCode\Config\Config;
use kamerk22\AmazonGiftCode\Exceptions\AmazonErrors;
use kamerk22\AmazonGiftCode\Response\CancelResponse;
use kamerk22\AmazonGiftCode\Response\CreateBalanceResponse;
use kamerk22\AmazonGiftCode\Response\CreateResponse;

class AWS
{
    public const SERVICE_NAME = 'AGCODService';
    public const ACCEPT_HEADER = 'accept';
    public const CONTENT_HEADER = 'content-type';
    public const HOST_HEADER = 'host';
    public const X_AMZ_DATE_HEADER = 'x-amz-date';
    public const X_AMZ_TARGET_HEADER = 'x-amz-target';
    public const AUTHORIZATION_HEADER = 'Authorization';
    public const AWS_SHA256_ALGORITHM = 'AWS4-HMAC-SHA256';
    public const KEY_QUALIFIER = 'AWS4';
    public const TERMINATION_STRING = 'aws4_request';
    public const CREATE_GIFT_CARD_SERVICE = 'CreateGiftCard';
    public const CANCEL_GIFT_CARD_SERVICE = 'CancelGiftCard';
    public const GET_AVAILABLE_FUNDS_SERVICE = 'GetAvailableFunds';

    private $_config;


    /**
     * AWS constructor.
     * @param Config $config
     */
    public function __construct(Config $config)
    {
        $this->_config = $config;
    }


    /**
     * @param $amount
     * @param $creationId
     * @return CreateResponse
     *
     * @throws AmazonErrors
     */
    public function getCode($amount, $creationId = null): CreateResponse
    {
        $serviceOperation = self::CREATE_GIFT_CARD_SERVICE;
        $payload = $this->getGiftCardPayload($amount, $creationId);
        $canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
        $dateTimeString = $this->getTimestamp();
        $result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
        return new CreateResponse($result);

    }

    /**
     * @param $creationRequestId
     * @param $gcId
     * @return CancelResponse
     */
    public function cancelCode($creationRequestId, $gcId): CancelResponse
    {
        $serviceOperation = self::CANCEL_GIFT_CARD_SERVICE;
        $payload = $this->getCancelGiftCardPayload($creationRequestId, $gcId);
        $canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
        $dateTimeString = $this->getTimestamp();
        $result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
        return new CancelResponse($result);
    }

    /**
     * @return CreateBalanceResponse
     */
    public function getBalance(): CreateBalanceResponse
    {
        $serviceOperation = self::GET_AVAILABLE_FUNDS_SERVICE;
        $payload = $this->getAvailableFundsPayload();
        $canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
        $dateTimeString = $this->getTimestamp();
        $result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
        return new CreateBalanceResponse($result);
    }

    /**
     * @param $payload
     * @param $canonicalRequest
     * @param $serviceOperation
     * @param $dateTimeString
     * @return String
     */
    public function makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString): string
    {
        $KEY_QUALIFIER = self::KEY_QUALIFIER;
        $canonicalRequestHash = $this->buildHash($canonicalRequest);
        $stringToSign = $this->buildStringToSign($canonicalRequestHash);
        $authorizationValue = $this->buildAuthSignature($stringToSign);

        $secretKey = $this->_config->getSecret();
        $endpoint = $this->_config->getEndpoint();
        $regionName = $this->getRegion();

        $SERVICE_NAME = 'AGCODService';
        $serviceTarget = 'com.amazonaws.agcod.' . $SERVICE_NAME . '.' . $serviceOperation;
        $dateString = $this->getDateString();

        $signatureAWSKey = $KEY_QUALIFIER . $secretKey;

        $kDate = $this->hmac($dateString, $signatureAWSKey);
        $kDate_hexis = $this->hmac($dateString, $signatureAWSKey, false);

        $kRegion = $this->hmac($regionName, $kDate);
        $kRegion_hexis = $this->hmac($regionName, $kDate, false);

        $kService_hexis = $this->hmac($SERVICE_NAME, $kRegion, false);


        $url = 'https://' . $endpoint . '/' . $serviceOperation;
        $headers = $this->buildHeaders($payload, $authorizationValue, $dateTimeString, $serviceTarget);
        return (new Client())->request($url, $headers, $payload);
    }

    /**
     * @param $payload
     * @param $authorizationValue
     * @param $dateTimeString
     * @param $serviceTarget
     * @return array
     */
    public function buildHeaders($payload, $authorizationValue, $dateTimeString, $serviceTarget): array
    {
        $ACCEPT_HEADER = self::ACCEPT_HEADER;
        $X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
        $X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
        $AUTHORIZATION_HEADER = self::AUTHORIZATION_HEADER;
        return [
            'Content-Type:' . $this->getContentType(),
            'Content-Length: ' . strlen($payload),
            $AUTHORIZATION_HEADER . ':' . $authorizationValue,
            $X_AMZ_DATE_HEADER . ':' . $dateTimeString,
            $X_AMZ_TARGET_HEADER . ':' . $serviceTarget,
            $ACCEPT_HEADER . ':' . $this->getContentType()
        ];
    }

    /**
     * @param $stringToSign
     * @return string
     */
    public function buildAuthSignature($stringToSign): string
    {
        $AWS_SHA256_ALGORITHM = self::AWS_SHA256_ALGORITHM;
        $SERVICE_NAME = self::SERVICE_NAME;
        $TERMINATION_STRING = self::TERMINATION_STRING;
        $ACCEPT_HEADER = self::ACCEPT_HEADER;
        $HOST_HEADER = self::HOST_HEADER;
        $X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
        $X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;

        $awsKeyId = $this->_config->getAccessKey();
        $regionName = $this->getRegion();

        $dateString = $this->getDateString();
        $derivedKey = $this->buildDerivedKey();
        // Calculate signature per http://docs.aws.amazon.com/general/latest/gr/sigv4-calculate-signature.html
        $finalSignature = $this->hmac($stringToSign, $derivedKey, false);

        // Assemble Authorization Header with signing information
        // per http://docs.aws.amazon.com/general/latest/gr/sigv4-add-signature-to-request.html
        $authorizationValue =
            $AWS_SHA256_ALGORITHM
            . ' Credential=' . $awsKeyId
            . '/' . $dateString . '/' . $regionName . '/' . $SERVICE_NAME . '/' . $TERMINATION_STRING . ','
            . ' SignedHeaders='
            . $ACCEPT_HEADER . ';' . $HOST_HEADER . ';' . $X_AMZ_DATE_HEADER . ';' . $X_AMZ_TARGET_HEADER . ','
            . ' Signature='
            . $finalSignature;

        return $authorizationValue;
    }

    /**
     * @param $canonicalRequestHash
     * @return string
     */
    public function buildStringToSign($canonicalRequestHash): string
    {
        $AWS_SHA256_ALGORITHM = self::AWS_SHA256_ALGORITHM;
        $TERMINATION_STRING = self::TERMINATION_STRING;
        $SERVICE_NAME = self::SERVICE_NAME;
        $regionName = $this->getRegion();
        $dateTimeString = $this->getTimestamp();
        $dateString = $this->getDateString();
        $stringToSign = "$AWS_SHA256_ALGORITHM\n$dateTimeString\n$dateString/$regionName/$SERVICE_NAME/$TERMINATION_STRING\n$canonicalRequestHash";

        return $stringToSign;
    }

    /**
     * @param bool $rawOutput
     * @return string
     */
    public function buildDerivedKey($rawOutput = true): string
    {
        $KEY_QUALIFIER = self::KEY_QUALIFIER;
        $TERMINATION_STRING = self::TERMINATION_STRING;
        $SERVICE_NAME = self::SERVICE_NAME;

        $awsSecretKey = $this->_config->getSecret();
        // Append Key Qualifier, "AWS4", to secret key per http://docs.aws.amazon.com/general/latest/gr/signature-v4-examples.html
        $signatureAWSKey = $KEY_QUALIFIER . $awsSecretKey;
        $regionName = $this->getRegion();
        $dateString = $this->getDateString();

        $kDate = $this->hmac($dateString, $signatureAWSKey);
        $kRegion = $this->hmac($regionName, $kDate);
        $kService = $this->hmac($SERVICE_NAME, $kRegion);

        // Derived the Signing key (derivedKey aka kSigning)
        return $this->hmac($TERMINATION_STRING, $kService, $rawOutput);
    }

    /**
     * @return string
     */
    public function getRegion(): string
    {
        $endpoint = $this->_config->getEndpoint();
        $regionName = 'us-east-1';

        if ($endpoint === 'agcod-v2-eu.amazon.com' || $endpoint === 'agcod-v2-eu-gamma.amazon.com') {
            $regionName = 'eu-west-1';
        } else if ($endpoint === 'agcod-v2-fe.amazon.com' || $endpoint === 'agcod-v2-fe-gamma.amazon.com') {
            $regionName = 'us-west-2';
        }
        return $regionName;
    }


    /**
     * @param $amount
     * @param $creationId
     * @return string
     */
    public function getGiftCardPayload($amount, $creationId = null): string
    {
        $amount = trim($amount);
        $payload = [
            'creationRequestId' => $creationId ?: uniqid($this->_config->getPartner().'_'),
            'partnerId' => $this->_config->getPartner(),
            'value' =>
                [
                    'currencyCode' => $this->_config->getCurrency(),
                    'amount' => (float)$amount
                ]
        ];
        return json_encode($payload);
    }

    /**
     * @param $creationRequestId
     * @param $gcId
     * @return string
     */
    public function getCancelGiftCardPayload($creationRequestId, $gcId): string
    {
        $gcResponseId = trim($gcId);
        $payload = [
            'creationRequestId' => $creationRequestId,
            'partnerId' => $this->_config->getPartner(),
            'gcId' => $gcResponseId
        ];
        return json_encode($payload);
    }

    /**
     * @return string
     */
    public function getAvailableFundsPayload(): string
    {
        $payload = [
            'partnerId' => $this->_config->getPartner(),
        ];
        return json_encode($payload);
    }

    /**
     * @param $serviceOperation
     * @param $payload
     * @return string
     */
    public function getCanonicalRequest($serviceOperation, $payload): string
    {
        $HOST_HEADER = self::HOST_HEADER;
        $X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
        $X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
        $ACCEPT_HEADER = self::ACCEPT_HEADER;
        $payloadHash = $this->buildHash($payload);
        $canonicalHeaders = $this->buildCanonicalHeaders($serviceOperation);
        $canonicalRequest = "POST\n/$serviceOperation\n\n$canonicalHeaders\n\n$ACCEPT_HEADER;$HOST_HEADER;$X_AMZ_DATE_HEADER;$X_AMZ_TARGET_HEADER\n$payloadHash";
        return $canonicalRequest;
    }

    /**
     * @param $data
     * @return string
     */
    public function buildHash($data): string
    {
        return hash('sha256', $data);
    }

    /**
     * @return false|string
     */
    public function getTimestamp()
    {
        return gmdate('Ymd\THis\Z');
    }

    /**
     * @param $data
     * @param $key
     * @param bool $raw
     * @return string
     */
    public function hmac($data, $key, $raw = true): string
    {
        return hash_hmac('sha256', $data, $key, $raw);
    }

    /**
     * @return bool|string
     */
    public function getDateString()
    {
        return substr($this->getTimestamp(), 0, 8);
    }

    /**
     * @return string
     */
    public function getContentType(): string
    {
        return 'application/json';
    }

    /**
     * @param $serviceOperation
     * @return string
     */
    public function buildCanonicalHeaders($serviceOperation): string
    {
        $ACCEPT_HEADER = self::ACCEPT_HEADER;
        $HOST_HEADER = self::HOST_HEADER;
        $X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
        $X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
        $dateTimeString = $this->getTimestamp();
        $endpoint = $this->_config->getEndpoint();
        $contentType = $this->getContentType();
        return
            "$ACCEPT_HEADER:$contentType\n$HOST_HEADER:$endpoint\n$X_AMZ_DATE_HEADER:$dateTimeString\n$X_AMZ_TARGET_HEADER:com.amazonaws.agcod.AGCODService.$serviceOperation";
    }
}


1			<?php
2
3			/**
4			* Part of the AmazonGiftCode package.
5			* Author: Kashyap Merai <[email protected]>
6			*
7			*/
8
9
10			namespace kamerk22\AmazonGiftCode\AWS;
11
12
13			use kamerk22\AmazonGiftCode\Client\Client;
14			use kamerk22\AmazonGiftCode\Config\Config;
15			use kamerk22\AmazonGiftCode\Exceptions\AmazonErrors;
16			use kamerk22\AmazonGiftCode\Response\CancelResponse;
17			use kamerk22\AmazonGiftCode\Response\CreateBalanceResponse;
18			use kamerk22\AmazonGiftCode\Response\CreateResponse;
19
20			class AWS
21			{
22			public const SERVICE_NAME = 'AGCODService';
23			public const ACCEPT_HEADER = 'accept';
24			public const CONTENT_HEADER = 'content-type';
25			public const HOST_HEADER = 'host';
26			public const X_AMZ_DATE_HEADER = 'x-amz-date';
27			public const X_AMZ_TARGET_HEADER = 'x-amz-target';
28			public const AUTHORIZATION_HEADER = 'Authorization';
29			public const AWS_SHA256_ALGORITHM = 'AWS4-HMAC-SHA256';
30			public const KEY_QUALIFIER = 'AWS4';
31			public const TERMINATION_STRING = 'aws4_request';
32			public const CREATE_GIFT_CARD_SERVICE = 'CreateGiftCard';
33			public const CANCEL_GIFT_CARD_SERVICE = 'CancelGiftCard';
34			public const GET_AVAILABLE_FUNDS_SERVICE = 'GetAvailableFunds';
35
36			private $_config;
37
38
39			/**
40			* AWS constructor.
41			* @param Config $config
42			*/
43			public function __construct(Config $config)
44			{
45			$this->_config = $config;
46			}
47
48
49			/**
50			* @param $amount
51			* @param $creationId
52			* @return CreateResponse
53			*
54			* @throws AmazonErrors
55			*/
56			public function getCode($amount, $creationId = null): CreateResponse
57			{
58			$serviceOperation = self::CREATE_GIFT_CARD_SERVICE;
59			$payload = $this->getGiftCardPayload($amount, $creationId);
60			$canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
61			$dateTimeString = $this->getTimestamp();
62			$result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
63			return new CreateResponse($result);
64
65			}
66
67			/**
68			* @param $creationRequestId
69			* @param $gcId
70			* @return CancelResponse
71			*/
72			public function cancelCode($creationRequestId, $gcId): CancelResponse
73			{
74			$serviceOperation = self::CANCEL_GIFT_CARD_SERVICE;
75			$payload = $this->getCancelGiftCardPayload($creationRequestId, $gcId);
76			$canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
77			$dateTimeString = $this->getTimestamp();
78			$result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
79			return new CancelResponse($result);
80			}
81
82			/**
83			* @return CreateBalanceResponse
84			*/
85			public function getBalance(): CreateBalanceResponse
86			{
87			$serviceOperation = self::GET_AVAILABLE_FUNDS_SERVICE;
88			$payload = $this->getAvailableFundsPayload();
89			$canonicalRequest = $this->getCanonicalRequest($serviceOperation, $payload);
90			$dateTimeString = $this->getTimestamp();
91			$result = json_decode($this->makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString), true);
92			return new CreateBalanceResponse($result);
93			}
94
95			/**
96			* @param $payload
97			* @param $canonicalRequest
98			* @param $serviceOperation
99			* @param $dateTimeString
100			* @return String
101			*/
102			public function makeRequest($payload, $canonicalRequest, $serviceOperation, $dateTimeString): string
103			{
104			$KEY_QUALIFIER = self::KEY_QUALIFIER;
105			$canonicalRequestHash = $this->buildHash($canonicalRequest);
106			$stringToSign = $this->buildStringToSign($canonicalRequestHash);
107			$authorizationValue = $this->buildAuthSignature($stringToSign);
108
109			$secretKey = $this->_config->getSecret();
110			$endpoint = $this->_config->getEndpoint();
111			$regionName = $this->getRegion();
112
113			$SERVICE_NAME = 'AGCODService';
114			$serviceTarget = 'com.amazonaws.agcod.' . $SERVICE_NAME . '.' . $serviceOperation;
115			$dateString = $this->getDateString();
116
117			$signatureAWSKey = $KEY_QUALIFIER . $secretKey;
118
119			$kDate = $this->hmac($dateString, $signatureAWSKey);
120			$kDate_hexis = $this->hmac($dateString, $signatureAWSKey, false);
			0 ignored issues – show Unused Code introduced 2018-12-07 17:19 UTC by Report Bug Copy Issue Report The assignment to `$kDate_hexis` is dead and can be removed. Loading history...
121			$kRegion = $this->hmac($regionName, $kDate);
122			$kRegion_hexis = $this->hmac($regionName, $kDate, false);
			0 ignored issues – show Unused Code introduced 2018-12-07 17:19 UTC by Report Bug Copy Issue Report The assignment to `$kRegion_hexis` is dead and can be removed. Loading history...
123			$kService_hexis = $this->hmac($SERVICE_NAME, $kRegion, false);
			0 ignored issues – show Unused Code introduced 2018-12-07 17:19 UTC by Report Bug Copy Issue Report The assignment to `$kService_hexis` is dead and can be removed. Loading history...
124
125			$url = 'https://' . $endpoint . '/' . $serviceOperation;
126			$headers = $this->buildHeaders($payload, $authorizationValue, $dateTimeString, $serviceTarget);
127			return (new Client())->request($url, $headers, $payload);
128			}
129
130			/**
131			* @param $payload
132			* @param $authorizationValue
133			* @param $dateTimeString
134			* @param $serviceTarget
135			* @return array
136			*/
137			public function buildHeaders($payload, $authorizationValue, $dateTimeString, $serviceTarget): array
138			{
139			$ACCEPT_HEADER = self::ACCEPT_HEADER;
140			$X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
141			$X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
142			$AUTHORIZATION_HEADER = self::AUTHORIZATION_HEADER;
143			return [
144			'Content-Type:' . $this->getContentType(),
145			'Content-Length: ' . strlen($payload),
146			$AUTHORIZATION_HEADER . ':' . $authorizationValue,
147			$X_AMZ_DATE_HEADER . ':' . $dateTimeString,
148			$X_AMZ_TARGET_HEADER . ':' . $serviceTarget,
149			$ACCEPT_HEADER . ':' . $this->getContentType()
150			];
151			}
152
153			/**
154			* @param $stringToSign
155			* @return string
156			*/
157			public function buildAuthSignature($stringToSign): string
158			{
159			$AWS_SHA256_ALGORITHM = self::AWS_SHA256_ALGORITHM;
160			$SERVICE_NAME = self::SERVICE_NAME;
161			$TERMINATION_STRING = self::TERMINATION_STRING;
162			$ACCEPT_HEADER = self::ACCEPT_HEADER;
163			$HOST_HEADER = self::HOST_HEADER;
164			$X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
165			$X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
166
167			$awsKeyId = $this->_config->getAccessKey();
168			$regionName = $this->getRegion();
169
170			$dateString = $this->getDateString();
171			$derivedKey = $this->buildDerivedKey();
172			// Calculate signature per http://docs.aws.amazon.com/general/latest/gr/sigv4-calculate-signature.html
173			$finalSignature = $this->hmac($stringToSign, $derivedKey, false);
174
175			// Assemble Authorization Header with signing information
176			// per http://docs.aws.amazon.com/general/latest/gr/sigv4-add-signature-to-request.html
177			$authorizationValue =
178			$AWS_SHA256_ALGORITHM
179			. ' Credential=' . $awsKeyId
180			. '/' . $dateString . '/' . $regionName . '/' . $SERVICE_NAME . '/' . $TERMINATION_STRING . ','
181			. ' SignedHeaders='
182			. $ACCEPT_HEADER . ';' . $HOST_HEADER . ';' . $X_AMZ_DATE_HEADER . ';' . $X_AMZ_TARGET_HEADER . ','
183			. ' Signature='
184			. $finalSignature;
185
186			return $authorizationValue;
187			}
188
189			/**
190			* @param $canonicalRequestHash
191			* @return string
192			*/
193			public function buildStringToSign($canonicalRequestHash): string
194			{
195			$AWS_SHA256_ALGORITHM = self::AWS_SHA256_ALGORITHM;
196			$TERMINATION_STRING = self::TERMINATION_STRING;
197			$SERVICE_NAME = self::SERVICE_NAME;
198			$regionName = $this->getRegion();
199			$dateTimeString = $this->getTimestamp();
200			$dateString = $this->getDateString();
201			$stringToSign = "$AWS_SHA256_ALGORITHM\n$dateTimeString\n$dateString/$regionName/$SERVICE_NAME/$TERMINATION_STRING\n$canonicalRequestHash";
202
203			return $stringToSign;
204			}
205
206			/**
207			* @param bool $rawOutput
208			* @return string
209			*/
210			public function buildDerivedKey($rawOutput = true): string
211			{
212			$KEY_QUALIFIER = self::KEY_QUALIFIER;
213			$TERMINATION_STRING = self::TERMINATION_STRING;
214			$SERVICE_NAME = self::SERVICE_NAME;
215
216			$awsSecretKey = $this->_config->getSecret();
217			// Append Key Qualifier, "AWS4", to secret key per http://docs.aws.amazon.com/general/latest/gr/signature-v4-examples.html
218			$signatureAWSKey = $KEY_QUALIFIER . $awsSecretKey;
219			$regionName = $this->getRegion();
220			$dateString = $this->getDateString();
221
222			$kDate = $this->hmac($dateString, $signatureAWSKey);
223			$kRegion = $this->hmac($regionName, $kDate);
224			$kService = $this->hmac($SERVICE_NAME, $kRegion);
225
226			// Derived the Signing key (derivedKey aka kSigning)
227			return $this->hmac($TERMINATION_STRING, $kService, $rawOutput);
228			}
229
230			/**
231			* @return string
232			*/
233			public function getRegion(): string
234			{
235			$endpoint = $this->_config->getEndpoint();
236			$regionName = 'us-east-1';
237
238			if ($endpoint === 'agcod-v2-eu.amazon.com' \|\| $endpoint === 'agcod-v2-eu-gamma.amazon.com') {
239			$regionName = 'eu-west-1';
240			} else if ($endpoint === 'agcod-v2-fe.amazon.com' \|\| $endpoint === 'agcod-v2-fe-gamma.amazon.com') {
241			$regionName = 'us-west-2';
242			}
243			return $regionName;
244			}
245
246
247			/**
248			* @param $amount
249			* @param $creationId
250			* @return string
251			*/
252			public function getGiftCardPayload($amount, $creationId = null): string
253			{
254			$amount = trim($amount);
255			$payload = [
256			'creationRequestId' => $creationId ?: uniqid($this->_config->getPartner().'_'),
257			'partnerId' => $this->_config->getPartner(),
258			'value' =>
259			[
260			'currencyCode' => $this->_config->getCurrency(),
261			'amount' => (float)$amount
262			]
263			];
264			return json_encode($payload);
265			}
266
267			/**
268			* @param $creationRequestId
269			* @param $gcId
270			* @return string
271			*/
272			public function getCancelGiftCardPayload($creationRequestId, $gcId): string
273			{
274			$gcResponseId = trim($gcId);
275			$payload = [
276			'creationRequestId' => $creationRequestId,
277			'partnerId' => $this->_config->getPartner(),
278			'gcId' => $gcResponseId
279			];
280			return json_encode($payload);
281			}
282
283			/**
284			* @return string
285			*/
286			public function getAvailableFundsPayload(): string
287			{
288			$payload = [
289			'partnerId' => $this->_config->getPartner(),
290			];
291			return json_encode($payload);
292			}
293
294			/**
295			* @param $serviceOperation
296			* @param $payload
297			* @return string
298			*/
299			public function getCanonicalRequest($serviceOperation, $payload): string
300			{
301			$HOST_HEADER = self::HOST_HEADER;
302			$X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
303			$X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
304			$ACCEPT_HEADER = self::ACCEPT_HEADER;
305			$payloadHash = $this->buildHash($payload);
306			$canonicalHeaders = $this->buildCanonicalHeaders($serviceOperation);
307			$canonicalRequest = "POST\n/$serviceOperation\n\n$canonicalHeaders\n\n$ACCEPT_HEADER;$HOST_HEADER;$X_AMZ_DATE_HEADER;$X_AMZ_TARGET_HEADER\n$payloadHash";
308			return $canonicalRequest;
309			}
310
311			/**
312			* @param $data
313			* @return string
314			*/
315			public function buildHash($data): string
316			{
317			return hash('sha256', $data);
318			}
319
320			/**
321			* @return false\|string
322			*/
323			public function getTimestamp()
324			{
325			return gmdate('Ymd\THis\Z');
326			}
327
328			/**
329			* @param $data
330			* @param $key
331			* @param bool $raw
332			* @return string
333			*/
334			public function hmac($data, $key, $raw = true): string
335			{
336			return hash_hmac('sha256', $data, $key, $raw);
337			}
338
339			/**
340			* @return bool\|string
341			*/
342			public function getDateString()
343			{
344			return substr($this->getTimestamp(), 0, 8);
345			}
346
347			/**
348			* @return string
349			*/
350			public function getContentType(): string
351			{
352			return 'application/json';
353			}
354
355			/**
356			* @param $serviceOperation
357			* @return string
358			*/
359			public function buildCanonicalHeaders($serviceOperation): string
360			{
361			$ACCEPT_HEADER = self::ACCEPT_HEADER;
362			$HOST_HEADER = self::HOST_HEADER;
363			$X_AMZ_DATE_HEADER = self::X_AMZ_DATE_HEADER;
364			$X_AMZ_TARGET_HEADER = self::X_AMZ_TARGET_HEADER;
365			$dateTimeString = $this->getTimestamp();
366			$endpoint = $this->_config->getEndpoint();
367			$contentType = $this->getContentType();
368			return
369			"$ACCEPT_HEADER:$contentType\n$HOST_HEADER:$endpoint\n$X_AMZ_DATE_HEADER:$dateTimeString\n$X_AMZ_TARGET_HEADER:com.amazonaws.agcod.AGCODService.$serviceOperation";
370			}
371			}
372

kamerk22 / AmazonGiftCode

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