# SPAPI

spapi-php is a http client for Amazon's Selling Partner API

Author: Lyubomir Slavilov

## Before you start

Spapi is released as Composer package `double-break/spapi-php` with **no warranties or promises**.

There are couple classes (such as `Signer`, `Credentials`) which are essential for the API calls to work. Most of the issues will live here.

All of the actual API clients are autogenerated and given the disclaimer above - not heavily tested.

### Requirements

- php 7.3 (never tested on lower version)
- composer
- a lot of time reading Amazon SP API documentation

## Install and update

Now you are ready to do

```bash
composer require double-break/spapi-php
```

### Package updates

Once you have successfully installed the package, the updates are simple as normal Composer package updates. Just execute:

```bash
composer update double-break/spapi-php
```

## Configuration

| Name                     | Description                                                                                                                  | Type                                                     |
| ------------------------ | ---------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------- |
| `http`                   | Contains all the `Guzzle` configuration                                                                                      | GuzzleConfiguration                                      |
| **LWA configuration**    |                                                                                                                              |
| `refresh_token`          | Value of the refresh token issued by the Seller authorizing the application                                                  | string                                                   |
| `client_id`              | The client id which is generated in the Seller Apps console                                                                  | string                                                   |
| `client_secret`          | The client secret with which the client will identify itself                                                                 | string                                                   |
| `access_token_longevity` | The longevity in seconds of the token. It is basically the time period in which the token will be kept in the `TokenStorage` | integer<br/>Default: 3600                                |
| **STS configuration**    |                                                                                                                              |
| `access_key`             | The IAM role access key                                                                                                      | string                                                   |
| `secret_key`             | The IAM role secret key                                                                                                      | string                                                   |
| `role_arn`               | The ARN of the IAM role                                                                                                      | string                                                   |
| `sts_session _longevity` | The longevity of the STS session which will be created                                                                       | integer <br />Default: 3600                              |
| **API configuration**    |                                                                                                                              |
| `region`                 | The region identifier for the region you are going to execute your calls against                                             | string <br /> Example: `eu-west-1`                       |
| `host`                   | The region specific host of the Selling Partner API                                                                          | string <br /> Example: `sellingpartnerapi-eu.amazon.com` |

## Examples

### Simple use

```php
<?php
  include __DIR__ . '/vendor/autoload.php';


  /** The Setup **/

  $config = [
    //Guzzle configuration
    'http' => [
      'verify' => false,    //<--- NOT SAFE FOR PRODUCTION
      'debug' => true       //<--- NOT SAFE FOR PRODUCTION
    ],

    //LWA: Keys needed to obtain access token from Login With Amazon Service
    'refresh_token' => '<YOUR-REFRESH-TOKEN>',
    'client_id' => '<CLINET-ID-IN-SELLER-CONSOLE>',
    'client_secret' => '<CLIENT_SECRET>',

    //STS: Keys of the IAM role which are needed to generate Secure Session
    // (a.k.a Secure token) for accessing and assuming the IAM role
    'access_key' => '<STS-ACCESS_KEY>',
    'secret_key' => '<STS-SECRET-KEY>',
    'role_arn' => '<ROLE-ARN>' ,

    //API: Actual configuration related to the SP API :)
    'region' => 'eu-west-1',
    'host' => 'sellingpartnerapi-eu.amazon.com'
  ];

  //Create token storage which will store the temporary tokens
  $tokenStorage = new DoubleBreak\Spapi\SimpleTokenStorage('./aws-tokens');

  //Create the request signer which will be automatically used to sign all of the
  //requests to the API
  $signer = new DoubleBreak\Spapi\Signer();

  //Create Credentials service and call getCredentials() to obtain
  //all the tokens needed under the hood

  $credentials = new DoubleBreak\Spapi\Credentials($tokenStorage, $signer, $config);
  $cred = $credentials->getCredentials();



  /** The application logic implementation **/


  //Create SP API Catalog client and execute one ot its REST methods.
  $catalogClient = new DoubleBreak\Spapi\Api\CatalogItems($cred, $config);

  //Check the catalog info for B074Z9QH5F ASIN
  $result = $catalogClient->getCatalogItem('B074Z9QH5F', [
    'MarketplaceId' => 'A1PA6795UKMFR9',
  ])['payload'];


  print_r($result);
```

### Feed API usage

For Feed API, user can follow [Feeds API Use Case Guide](https://github.com/amzn/selling-partner-api-docs/blob/main/guides/use-case-guides/feeds-api-use-case-guide-2020-09-04.md).

And in this guide for step 2. Encrypt and upload the feed data: user can use below example:

```php
<?php

// content type of the feed data to be uploaded.
$contentType = 'text/xml; charset=UTF-8';

// create feed document
$feedClient = new \DoubleBreak\Spapi\Api\Feeds($cred, $config);
$response = $feedClient->createFeedDocument(["contentType" => $contentType]);
$payload = $response['payload'];

$feedContentFilePath = './testFeedDoc.xml';

$result = (new \DoubleBreak\Spapi\Helper\Feeder())->uploadFeedDocument($payload,$contentType,$feedContentFilePath);
print_r($result);
```

And for Step 6. Download and decrypt the feed processing report: user can use below example:

```php
<?php
$feedClient = new \DoubleBreak\Spapi\Api\Feeds($cred, $config);

// $resultFeedDocumentId: from response of getFeed() function.
$resultFeedDocumentId = 'amzn1.tortuga.3.ed4cd0d8-447b-4c22-96b5-52da8ace1207.T3YUVYPGKE9BMY';
$response = $feedClient->getFeedDocument($resultFeedDocumentId);
$payload = $response['payload'];

$result = (new \DoubleBreak\Spapi\Helper\Feeder())->downloadFeedProcessingReport($payload);
print_r($result);
```

### Debugging responses

```php
<?php
  //configuration and initialization here

  $catalogClinet = new DoubleBreak\Spapi\Api\Catalog($cred, $config);
  try {
    $result = $catalogClinet->getCatalogItem('B074Z9QH5F', [
      'MarketplaceId' => 'A1PA6795UKMFR9',
    ])['payload'];
    //do your business here
  } catch (\GuzzleHttp\Exception\ClientException $e) {
    $httpCode = $e->getResponse()->getStatusCode();
    $errorBody =  $e->getResponse()->getBody();

    echo "Amazon SP API responded with HTTP {$httpCode}\n {$errorBody}";

  } catch(\Exception $e) {
    echo "Unexpected exception: " . $e->getMessage();
  }
```

### Accessing response headers

📝Accessing headers by using client's `getLastHttpResponse()` is available since v1.0.5

```php
<?php
  //configuration and initialization here

  //Create SP API Catalog client and execute one ot its REST methds.
  $catalogClinet = new DoubleBreak\Spapi\Api\Catalog($cred, $config);

  //Check the catalog info for B074Z9QH5F ASIN
  $result = $catalogClinet->getCatalogItem('B074Z9QH5F', [
    'MarketplaceId' => 'A1PA6795UKMFR9',
  ])['payload'];

  $headers = $catalogClinet->getLastHttpResponse()->getHeaders();
  foreach ($headers as $headerName => $values) {
    echo "{$headerName}: " . implode(','. $values);
  }
```

### Debugging 4xx and 5xx response headers

📝Accessing headers by using client's `getLastHttpResponse()` is available since v1.0.5

```php
<?php
  //configuration and initialization here

  $catalogClinet = new DoubleBreak\Spapi\Api\Catalog($cred, $config);
  try {
    $result = $catalogClinet->getCatalogItem('B074Z9QH5F', [
      'MarketplaceId' => 'A1PA6795UKMFR9',
    ])['payload'];
    //do your business here
  } catch (\GuzzleHttp\Exception\ClientException $e) {
    $headers = $e->getResponse()->getHeaders();
    print_r($headers);
  }

  // OR

  try {
    $result = $catalogClinet->getCatalogItem('B074Z9QH5F', [
      'MarketplaceId' => 'A1PA6795UKMFR9',
    ])['payload'];
    //do your business here

  } catch (\GuzzleHttp\Exception\ClientException $e) {
    $headers = $catalogClinet->getLastHttpResponse()->getHeaders();
    print_r($headers);
  }

```

### Migrating authorization from Amazon Marketplace Web Service to Selling Partner Api

[Please, see more details in Selling Partner Api docs](https://github.com/amzn/selling-partner-api-docs/blob/main/guides/developer-guide/SellingPartnerApiDeveloperGuide.md#migrating-authorization-from-amazon-marketplace-web-service)

```php
<?php
include __DIR__ . '/vendor/autoload.php';

  /** The Setup **/

$config = [
    //Guzzle configuration
    'http' => [
        'verify' => false,
        'debug' => true
    ],

    //LWA: Keys needed to obtain access token from Login With Amazon Service
    'refresh_token' => '<YOUR-REFRESH-TOKEN>',
    'client_id' => '<CLINET-ID-IN-SELLER-CONSOLE>',
    'client_secret' => '<CLIENT_SECRET>',

    //STS: Keys of the IAM role which are needed to generate Secure Session
    // (a.k.a Secure token) for accessing and assuming the IAM role
    'access_key' => '<STS-ACCESS_KEY>',
    'secret_key' => '<STS-SECRET-KEY>',
    'role_arn' => '<ROLE-ARN>' ,

    //API: Actual configuration related to the SP API :)
    'region' => 'eu-west-1',
    'host' => 'sellingpartnerapi-eu.amazon.com'
];

//Create token storage which will store the temporary tokens
$tokenStorage = new DoubleBreak\Spapi\SimpleTokenStorage('./aws-tokens');

//Create the request signer which will be automatically used to sign all of the
//requests to the API
$signer = new DoubleBreak\Spapi\Signer();

//Create Credentials service and call getCredentials() to obtain
//all the tokens needed under the hood
$credentials = new DoubleBreak\Spapi\Credentials($tokenStorage, $signer, $config);
//get credentials with migration token, it's needed for /authorization/v1/authorizationCode request
$cred = $credentials->getCredentials(true);

/** The application logic implementation **/

//Create SP API Catalog client and execute one ot its REST methods.
$authorizationClient = new DoubleBreak\Spapi\Api\Authorization($cred, $config);

//Get Authorization code
$result = $authorizationClient->getAuthorizationCode([
    'developerId' => '<DEVELOPER-ID-AUTHORIZED-BY-SELLING-PARTNER>',
    'mwsAuthToken' => '<MWS-AUTH-TOKEN>',
    'sellingPartnerId' => '<SELLING-PARTNER-ID>'
])['payload'];

//Authorization code should be changed to Access and Refresh token
print_r($credentials->exchangesAuthorizationCodeForRefreshToken($result['authorizationCode']));
```

### Authorization for Grantless Operations in Selling Partner API

[Please, see more details in Selling Partner Api docs](https://github.com/amzn/selling-partner-api-docs/blob/main/guides/developer-guide/SellingPartnerApiDeveloperGuide.md#grantless-operations-1)

```php
<?php
include __DIR__ . '/vendor/autoload.php';

  /** The Setup **/

$config = [
    //Guzzle configuration
    'http' => [
        'verify' => false,
        'debug' => true
    ],

    //LWA: Keys needed to obtain access token from Login With Amazon Service
    'refresh_token' => '<YOUR-REFRESH-TOKEN>',
    'client_id' => '<CLINET-ID-IN-SELLER-CONSOLE>',
    'client_secret' => '<CLIENT_SECRET>',

    //STS: Keys of the IAM role which are needed to generate Secure Session
    // (a.k.a Secure token) for accessing and assuming the IAM role
    'access_key' => '<STS-ACCESS_KEY>',
    'secret_key' => '<STS-SECRET-KEY>',
    'role_arn' => '<ROLE-ARN>' ,

    //API: Actual configuration related to the SP API :)
    'region' => 'eu-west-1',
    'host' => 'sellingpartnerapi-eu.amazon.com'
];

//Create token storage which will store the temporary tokens
$tokenStorage = new DoubleBreak\Spapi\SimpleTokenStorage('./aws-tokens');

//Create the request signer which will be automatically used to sign all of the
//requests to the API
$signer = new DoubleBreak\Spapi\Signer();

//Create Credentials service and call getCredentials() to obtain
//all the tokens needed under the hood
$credentials = new DoubleBreak\Spapi\Credentials($tokenStorage, $signer, $config);
//get credentials with Grantless auth token, it's needed for grantless operations request
$cred = $credentials->getCredentials('grantless');

/** The application logic implementation **/

//Create SP API Notification client and execute one ot its REST methods.
$notificationClient = new DoubleBreak\Spapi\Api\Notifications($cred, $config);

//Get notification destinations
$result = $notificationClient->getDestinations();
print_r($result['payload']);
```

### Working with Restricted Data APIs

```php
<?php
  include __DIR__ . '/vendor/autoload.php';


  /** The Setup **/

  $config = [
    // same as examples above...
  ];

  //Create token storage which will store the temporary tokens
  $tokenStorage = new DoubleBreak\Spapi\SimpleTokenStorage('./aws-tokens');

  //Create the request signer which will be automatically used to sign all of the
  //requests to the API
  $signer = new DoubleBreak\Spapi\Signer();

  //Create Credentials service and call getCredentials() to obtain
  //all the tokens needed under the hood

  $credentials = new DoubleBreak\Spapi\Credentials($tokenStorage, $signer, $config);
  $cred = $credentials->getRdtCredentials([
    'restrictedResources' => [
      [
        'method' => 'GET',
        'path' => '/orders/v0/orders/{orderId}/buyerInfo'
      ],
      [
        'method' => 'GET',
        'path' => '/mfn/v0/shipments/{shipmentId}'
      ]
    ]
  ]);



  /** The application logic implementation **/


  //Create SP API Orders client and execute one ot its REST methods.
  $orderClient = new DoubleBreak\Spapi\Api\Orders($cred, $config);

  //Get order's buyer info
  $result = $catalogClient->getOrderBuyerInfo('902-3159896-1390916')['payload'];
  print_r($result);

  //...
```

For more information see the Amazons's use case documentation about this topic: https://github.com/amzn/selling-partner-api-docs/blob/main/guides/en-US/use-case-guides/tokens-api-use-case-guide/tokens-API-use-case-guide-2021-03-01.md
