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<?php |
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declare(strict_types=1); |
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namespace Cakasim\Payone\Sdk\Redirect\UrlGenerator; |
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use Cakasim\Payone\Sdk\Config\ConfigExceptionInterface; |
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use Cakasim\Payone\Sdk\Config\ConfigInterface; |
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use Cakasim\Payone\Sdk\Redirect\Token\Format\EncoderExceptionInterface; |
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use Cakasim\Payone\Sdk\Redirect\Token\Format\EncoderInterface; |
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use Cakasim\Payone\Sdk\Redirect\Token\TokenFactoryInterface; |
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use Psr\Http\Message\UriFactoryInterface; |
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class UrlGenerator implements UrlGeneratorInterface |
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{ |
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/** |
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* The name of the token query parameter which will be used |
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* if the token value placeholder is not in use. |
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*/ |
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protected const TOKEN_PARAMETER_NAME = 't'; |
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/** |
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* The pattern to search in the redirect URL which will |
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* be replaced by the token value. |
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*/ |
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protected const TOKEN_PLACEHOLDER_PATTERN = '/\$TOKEN/i'; |
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/** |
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* @var ConfigInterface The SDK config. |
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*/ |
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protected $config; |
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/** |
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* @var TokenFactoryInterface The redirect token factory. |
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*/ |
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protected $tokenFactory; |
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/** |
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* @var EncoderInterface The token encoder. |
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*/ |
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protected $encoder; |
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/** |
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* @var UriFactoryInterface The PSR-7 URI factory. |
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*/ |
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protected $uriFactory; |
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/** |
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* Constructs the URL generator. |
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* |
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* @param ConfigInterface $config The SDK config. |
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* @param TokenFactoryInterface $tokenFactory The redirect token factory. |
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* @param EncoderInterface $encoder The token encoder. |
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* @param UriFactoryInterface $uriFactory The PSR-7 URI factory. |
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*/ |
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public function __construct( |
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ConfigInterface $config, |
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TokenFactoryInterface $tokenFactory, |
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EncoderInterface $encoder, |
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UriFactoryInterface $uriFactory |
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) { |
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$this->config = $config; |
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$this->tokenFactory = $tokenFactory; |
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$this->encoder = $encoder; |
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$this->uriFactory = $uriFactory; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function generate(array $data): string |
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{ |
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try { |
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$url = $this->config->get('redirect.url'); |
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} catch (ConfigExceptionInterface $e) { |
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throw new UrlGeneratorException("Failed to generate the redirect URL.", 0, $e); |
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} |
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$token = $this->tokenFactory->createToken($data); |
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try { |
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$token = $this->encoder->encode($token); |
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} catch (EncoderExceptionInterface $e) { |
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throw new UrlGeneratorException("Failed to generate the redirect URL, could not encode the token.", 0, $e); |
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} |
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// Try to replace the token placeholder. |
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// Return the URL if the placeholder was replaced. |
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if ($this->replaceTokenPlaceholder($url, $token)) { |
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return $url; |
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} |
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// Append the token parameter to the URL. |
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return $this->appendDefaultTokenParameter($url, $token); |
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} |
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/** |
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* Replaces the token parameter if a placeholder if used. |
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* |
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* @param string $url The URL. |
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* @param string $token The token value. |
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* @return bool True if the token placeholder was replaced. |
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*/ |
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protected function replaceTokenPlaceholder(string &$url, string $token): bool |
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{ |
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$count = 0; |
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$url = preg_replace(static::TOKEN_PLACEHOLDER_PATTERN, $token, $url, -1, $count); |
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return $count > 0; |
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} |
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/** |
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* Appends the default token query parameter (if possible). |
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* If the token parameter already exists, it will not be modified. |
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* |
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* @param string $url The URL to which the token will be appended. |
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* @param string $token The token to append. |
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* @return string The URL with appended token parameter. |
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*/ |
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protected function appendDefaultTokenParameter(string $url, string $token): string |
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{ |
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// Make PSR-7 URI from provided URL and read the query string. |
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$uri = $this->uriFactory->createUri($url); |
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$query = $uri->getQuery(); |
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// Parse the query string. |
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$queryData = []; |
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parse_str($query, $queryData); |
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// Return untouched URL if the token parameter already exists. |
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if (isset($queryData[static::TOKEN_PARAMETER_NAME])) { |
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return $url; |
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} |
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// Set token parameter. |
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$queryData[static::TOKEN_PARAMETER_NAME] = $token; |
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// Build the query string. |
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$query = http_build_query($queryData); |
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return (string) $uri->withQuery($query); |
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} |
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} |
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Cakasim /
php-payone-sdk
