No PSR-18 clients found. Make sure to install a package providing "psr/http-client-implementation". Example: "php-http/guzzle6-adapter".

[gitman2015]

Hello,
I got a psr-18 error when I test your example:

No PSR-18 clients found. Make sure to install a package providing "psr/http-client-implementation". Example: "php-http/guzzle6-adapter".

require 'vendor/autoload.php';

/**
 * Use
 * Single provider
 * To get information of a book on a specific provider:
 */

$htmlGetter = new \MacFJA\BookRetriever\Helper\HtmlGetter();
$isbnTool = new \Isbn\Isbn();

$antoineOnline = new \MacFJA\BookRetriever\Provider\AntoineOnline($htmlGetter, $isbnTool);

// $books contains a list of \MacFJA\BookRetriever\SearchResultInterface
try {
    $books = $antoineOnline->searchIsbn('97822530063249');
} catch(Exception $e) {
    echo $e->getMessage();
}

// symfony/var-dumper
dump($htmlGetter);
dump($isbnTool);
dump($antoineOnline);

I'm testing your library outside the symfony framework, just in a pure php project

Also, can you please show a complete working example. I don't know what to put in $providerConfiguration = ...; either in Configurable provider or Multiple providers.

Finally, can you please add the Eni provider (https://www.editions-eni.fr/)?

I can't wait to test all these features which seem very complete and powerful to me!
Thanks for your help

my composer.json:

{
    "require": {
        "macfja/book-retriever": "^1.1",
        "symfony/var-dumper": "^5.4"
    },
    "autoload": {
        "psr-4": {
            "App\\":"src/"
        }
    }
}

[MacFJA]

Finally, can you please add the Eni provider (https://www.editions-eni.fr/)?

I create a new issue for it: #5

---

I got a psr-18 error when I test your example:

The library don't come with any PSR-18 implementation.
The goal is not to force anyone to use the implementation I choose, but to let anyone you their preferred PSR-18 library.
You can pick up any library from this list: https://packagist.org/providers/psr/http-client-implementation
For example guzzlehttp/guzzle is a good candidate as it provide PSR-18, PSR-7 and PSR-17 implementation (which are needed by this library) and is a well known and maintained package.

---

Also, can you please show a complete working example. I don't know what to put in $providerConfiguration = ...; either in Configurable provider or Multiple providers.

Here a working example of a Provider Configuration: https://github.com/MacFJA/livres/blob/master/src/Repository/ProviderConfigurationRepository.php

But if the provider(s) you want to use have no particular configuration, you can simply write this:

$providerConfiguration = new class implements \MacFJA\BookRetriever\ProviderConfigurationInterface {
    public function getParameters(\MacFJA\BookRetriever\ProviderInterface $provider): array
    {
        return [];
    }

    public function isActive(\MacFJA\BookRetriever\ProviderInterface $provider): bool
    {
        return true;
    }
};

The $providerConfiguration (that need to implement the interface ProviderConfigurationInterface) allow you to dynamically add options to a provider (like API token)

---

I hope that answer your question, If not don't hesitate to ask more details

[gitman2015]

Thanks for your answer

There is already the "guzzlehttp/guzzle" package when launches the composer require statement:

PS C:\XAMPP\htdocs\blog\Book-Retriever> **composer require macfja/book-retriever**
Using version ^1.1 for macfja/book-retriever
./composer.json has been updated
Running composer update macfja/book-retriever
Loading composer repositories with package information
Updating dependencies
Lock file operations: 17 installs, 0 updates, 0 removals
  - Locking cedcommerce/ebay-sdk-php (18.0.1)
  - Locking fale/isbn (3.1.0)
  - **Locking guzzlehttp/guzzle** (6.5.5)
  - Locking guzzlehttp/promises (1.5.1)
  - Locking guzzlehttp/psr7 (1.8.3)
  - Locking macfja/book-retriever (1.1.1)
  - Locking masterminds/html5 (2.7.5)
  - Locking njt/good-reads (1.0.0)
  - Locking php-http/discovery (1.14.1)
  - Locking psr/http-client (1.0.1)
  - Locking psr/http-factory (1.0.1)
  - Locking psr/http-message (1.0.1)
  - Locking ralouphie/getallheaders (3.0.3)
  - Locking scriptotek/google-books (v0.2.5)
  - Locking symfony/polyfill-intl-idn (v1.25.0)
  - Locking symfony/polyfill-intl-normalizer (v1.25.0)
  - Locking symfony/polyfill-php72 (v1.25.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 17 installs, 0 updates, 0 removals
  - Installing guzzlehttp/promises (1.5.1): Extracting archive
  - Installing ralouphie/getallheaders (3.0.3): Extracting archive
  - Installing psr/http-message (1.0.1): Extracting archive
  - Installing guzzlehttp/psr7 (1.8.3): Extracting archive
  - Installing symfony/polyfill-php72 (v1.25.0): Extracting archive
  - Installing symfony/polyfill-intl-normalizer (v1.25.0): Extracting archive
  - Installing symfony/polyfill-intl-idn (v1.25.0): Extracting archive
  - **Installing guzzlehttp/guzzle (6.5.5)**: Extracting archive
  - Installing scriptotek/google-books (v0.2.5): Extracting archive
  - Installing psr/http-factory (1.0.1): Extracting archive
  - Installing psr/http-client (1.0.1): Extracting archive
  - Installing php-http/discovery (1.14.1): Extracting archive
  - Installing njt/good-reads (1.0.0): Extracting archive
  - Installing masterminds/html5 (2.7.5): Extracting archive
  - Installing fale/isbn (3.1.0): Extracting archive
  - Installing cedcommerce/ebay-sdk-php (18.0.1): Extracting archive
  - Installing macfja/book-retriever (1.1.1): Extracting archive
3 package suggestions were added by new dependencies, use `composer suggest` to see details.
Generating autoload files
5 packages you are using are looking for funding.
Use the `composer fund` command to find out more!

I tested a lot of package without success (guzzlehttp/guzzle + guzzle/guzzle6-adapter ...), now I have no more error with this composer.json:

{
    "require": {
        "macfja/book-retriever": "^1.1",
        "symfony/http-client": "^5.4",
        "php-http/httplug": "^2.3",
        "nyholm/psr7": "^1.5",
        "symfony/var-dumper": "^5.4"
    }
}

Can you test in a new project your library, just the simple example please (provider AntoineOnline) ?

I don't get any results with isbn: 9782253006329

$htmlGetter = new \MacFJA\BookRetriever\Helper\HtmlGetter();
$isbnTool = new \Isbn\Isbn();

$antoineOnline = new \MacFJA\BookRetriever\Provider\AntoineOnline($htmlGetter, $isbnTool);
$books = $antoineOnline->searchIsbn('9782253006329');

In your AntoinOnline.php file,
$location = $response->getHeader('location');

returns an empty array

There's no key location in headers: $headers=$response->getHeaders();

However I noticed that there is a location key in response_headers through the library:

^ Nyholm\Psr7\Response {[#34 ▼]()
  -reasonPhrase: "OK"
  -statusCode: 200
  -headers: array:8 [[▶]()]
  -headerNames: array:8 [[▶]()]
  -protocol: "1.1"
  **-stream: Nyholm\Psr7\Stream** {[#36 ▼]()
    -stream: stream resource [@17 ▼]()
      timed_out: false
      blocked: true
      eof: false
      wrapper_data: Symfony\Component\HttpClient\Response\StreamWrapper {[#37 ▼]()
        +context: null
        -client: Symfony\Component\HttpClient\Response\CurlResponse {[#31 ▼](http://localhost:3000/#sf-dump-1145398349-ref231)
          **response_headers**: array:24 [[▼]()
            0 => "HTTP/1.1 302 Found"
            1 => "Cache-Control: private"
            2 => "Content-Type: text/html; charset=utf-8"
            3 => "ETag: """
            **4 => "Location:** /Book_Vingt_Mille_Lieues_Sous_Les_Mers_Jules_Verne_9782253006329.aspx?productCode=0009782253006329"
            5 => "Server: Microsoft-IIS/8.5"
            6 => "X-AspNet-Version: 2.0.50727"
            7 => "X-Powered-By: UrlRewriter.NET 1.7.0"
            8 => "Set-Cookie: ASP.NET_SessionId=kcnz4m451wqrd1550od24v55; path=/; HttpOnly"
            9 => "Set-Cookie: newAntoineOnlineLanguage=GrysQiWsf1yG1blDuXn4MOt8I62BA2Oxqe46sJVp3MfMd_sJvDQXrWzj6JaWyX2iFxJtHAbxBBfET1pibxvw12HlV1I1; expires=Mon, 14-Mar-2022 09:0[ ▶]()"
            10 => "Set-Cookie: newAntoineOnlineLanguage=AllnlMvScWi6-urFWHKiP6U1ZGwxTVsnTiX5LM5moUNq7aVj1vqpLerc5uQsconjUCYrHKoRS4KK6MnOAiTj8j5RfaU1; expires=Mon, 14-Mar-2022 09:0[ ▶]()"
            11 => "X-Powered-By: ASP.NET"
            12 => "Date: Sun, 13 Mar 2022 09:03:18 GMT"
            13 => "Content-Length: 221"
            14 => "HTTP/1.1 200 OK"
            15 => "Cache-Control: private"
            16 => "Content-Type: text/html; charset=utf-8"

I don't know how to retrieve the 'location' from the stream.

the second problem is that if we have a 200 response, you return an empty array (in AntoineOnline.php)

if ($response->getStatusCode() < 300 || $response->getStatusCode() > 399) {
            return [];
         }

Finally, if I don't take location into account for testing purposes, I get a result in SearchBuilder:

^ "searchResultBuilder:"

^ array:1 [[▼]()
  0 => MacFJA\BookRetriever\SearchResult\SearchResult {[#69 ▼]()
    -isbn: "9782253006329"
    -title: "Vingt mille lieues sous les mers"
    -authors: array:1 [[▶]()]
    -pages: null
    -series: null
    -illustrators: []
    -translators: []
    -genres: []
    -publicationDate: null
    -format: null
    -dimension: null
    -keywords: []
    -cover: "https://antoine-images.com/imagerepository.ashx?ean=9782253006329&SIZE=l&WebSite=AO"
    -additional: array:1 [[▼]()
      "antoineonline_link" => array:1 [[▼]()
        0 => "https://www.antoineonline.com"
      ]
    ]
  }
]

Here is the modified AmazonOnline.php file to override location and comment out the getStatusCode:

public function searchIsbn(string $isbn): array
    {
        $isbn = $this->isbnTool->hyphens->removeHyphens($isbn);
        // dump($isbn);
        $client = $this->getHttpClient();
        // dump($client);
        $requestBody = sprintf(static::WEBPAGE_SEARCH_PATTERN, urlencode($isbn));
        dump("$requestBody:", $requestBody);
        $request = $this->createHttpRequest('POST', $requestBody)
            ->withAddedHeader('content-length', (string) strlen($requestBody));
        dump($request);
        $response = $client->sendRequest($request);

        // location est dans response
        dump('response:',$response);
        // dump('getBody',$response->getBody()->getContents());

        // echo ($response->getBody()->getContents());
        dump($response->getStatusCode());

        // if ($response->getStatusCode() < 300 || $response->getStatusCode() > 399) {
        //     return [];
        // }

        $url = "https://www.antoineonline.com/Livre_Vingt_Mille_Lieues_Sous_Les_Mers_Jules_Verne_9782253006329.aspx?productCode=0009782253006329";
        // new NativeResponse($url,null,'',[],null,null,null,null);
        // ATTENTION: à ce stade on ne RECCUPERE RIEN de getHeader('location)
        $location = $response->getHeader('location');
        $headers=$response->getHeaders();
        dump('headers:', $headers);
        dump('location:',$location);
        // new StreamWrapper();

        $location = reset($location);

 
        // $xml = $this->getHtmlGetter()->getWebpageAsDom(static::WEBPAGE_BASE_URL.$location);
        $xml = $this->getHtmlGetter()->getWebpageAsDom($url);
        // dump('xml:',$xml);
        $allMeta = $xml->getElementsByTagName('meta');
        dump('allMeta:',$allMeta);
        $resultDiv = $xml->getElementById('ctl00_cph1_ProductMainPage');
        // $resultDiv = $xml->getElementById('ctl00_cph1_RandomNumbers');
        
        dump('resultDiv:',$resultDiv);

        if (null === $resultDiv) {
            return [];
        }
        $allInput = $resultDiv->getElementsByTagName('input');

        dump('allInput:',$allInput);

        $result = ['antoineonline_link' => static::WEBPAGE_BASE_URL.$location, 'isbn' => $isbn];
        $result = $this->handleNode($result, $allMeta, [$this, 'metaNodeVisitor']);
        $result = $this->handleNode($result, $allInput, [$this, 'inputNodeVisitor']);

        dump('searchResultBuilder:',[SearchResultBuilder::createFromArray($result)]);

        return [SearchResultBuilder::createFromArray($result)];
    }

For the amazon provider, I think the constant:
protected const API_BASE_URL_PATTERN = 'http://webservices.amazon...' is no longer valid and should be replaced with https://aws.amazon.com...

I would like to test another provider but for the moment only AntoineOnline displays a result.

I would like to have examples that work with other providers, please, because I don't know what parameters to put when they are necessary

[gitman2015]

also when i test with $provider Configuration it doesn't work:

$providerConfiguration = new class implements \MacFJA\BookRetriever\ProviderConfigurationInterface {
    public function getParameters(\MacFJA\BookRetriever\ProviderInterface $provider): array
    {
        return [];
    }

    public function isActive(\MacFJA\BookRetriever\ProviderInterface $provider): bool
    {
        return true;
    }
};

$configurator = new \MacFJA\BookRetriever\ProviderConfigurator($providerConfiguration,null,null,null);

$htmlGetter = new \MacFJA\BookRetriever\Helper\HtmlGetter();
$isbn = new \Isbn\Isbn();
$opds = new \MacFJA\BookRetriever\Helper\OPDSParser();
$sru = new \MacFJA\BookRetriever\Helper\SRUParser();

$providers = [
    // new \MacFJA\BookRetriever\Provider\AbeBooks($htmlGetter),
    // new \MacFJA\BookRetriever\Provider\Amazon(),
    new \MacFJA\BookRetriever\Provider\AntoineOnline($htmlGetter, $isbn),
    // new \MacFJA\BookRetriever\Provider\ArchiveOrg($opds),
    // new \MacFJA\BookRetriever\Provider\LibraryHub($sru),
    // new \MacFJA\BookRetriever\Provider\DigitEyes(),
    // new \MacFJA\BookRetriever\Provider\Ebay()
];
array_walk($providers, [$configurator, 'configure']);

$pool = new \MacFJA\BookRetriever\Pool($providers, $providerConfiguration);

$books = $pool->searchIsbn('9782253006329');

I get this error:

<html><body>
<!--StartFragment--><font size="1">

( ! )  Warning: assert(): assert($providers instanceof Traversable) failed in  C:\XAMPP\htdocs\blog\Book-Retriever\vendor\macfja\book-retriever\lib\Pool.php  on line 109
--


1 | 0.0006 | 356584 | {main}(  ) | ...\index.php:0
2 | 3.4582 | 731160 | MacFJA\BookRetriever\Pool->searchIsbn( $isbn = '9782253006329' ) | ...\index.php:58
3 | 3.4582 | 731160 | MacFJA\BookRetriever\Pool->getActiveProviders(  ) | ...\Pool.php:71
4 | 3.4582 | 731160 | assert( $assertion = FALSE, $description = 'assert($providers instanceof Traversable)' ) | ...\Pool.php:109

</font><!--EndFragment-->
</body>
</html>( ! ) Warning: [assert](http://www.php.net/function.assert)(): assert($providers instanceof Traversable) failed in C:\XAMPP\htdocs\blog\Book-Retriever\vendor\macfja\book-retriever\lib\Pool.php on line 109
Call Stack
#	Time	Memory	Function	Location
1	0.0006	356584	{main}( )	...\index.php:0
2	3.4582	731160	MacFJA\BookRetriever\Pool->searchIsbn( $isbn = '9782253006329' )	...\index.php:58
3	3.4582	731160	MacFJA\BookRetriever\Pool->getActiveProviders( )	...\Pool.php:71
4	3.4582	731160	assert( $assertion = FALSE, $description = 'assert($providers instanceof Traversable)' )	...\Pool.php:109

( ! ) Fatal error: Uncaught TypeError: Argument 1 passed to IteratorIterator::__construct() must implement interface Traversable, array given in C:\XAMPP\htdocs\blog\Book-Retriever\vendor\macfja\book-retriever\lib\Pool.php on line 111
( ! ) TypeError: Argument 1 passed to IteratorIterator::__construct() must implement interface Traversable, array given in C:\XAMPP\htdocs\blog\Book-Retriever\vendor\macfja\book-retriever\lib\Pool.php on line 111
Call Stack
#	Time	Memory	Function	Location
1	0.0006	356584	{main}( )	...\index.php:0
2	3.4582	731160	MacFJA\BookRetriever\Pool->searchIsbn( $isbn = '9782253006329' )	...\index.php:58
3	3.4582	731160	MacFJA\BookRetriever\Pool->getActiveProviders( )	...\Pool.php:71

[MacFJA]

There's no key location in headers: $headers=$response->getHeaders();

For the amazon provider, I think the constant:
protected const API_BASE_URL_PATTERN = 'http://webservices.amazon...' is no longer valid and should be replaced with https://aws.amazon.com...

I didn't updated the library for almost 2 years, so it's highly probable that some provider have changed their API or about data are displayed on their website.

---

I don't know what parameters to put when they are necessary

I will update the Providers.md file to add more details about the required parameter of the providers that need them.
I will also create an Exception to indicate the missing parameters for those providers

---

I would like to have examples that work with other providers

For some example you can look at the Tests/Unit directory.

But I will create a full working example (other that https://github.com/MacFJA/livres)