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<?php /** * WP AI Client: WP_AI_Client_HTTP_Client class * * @package WordPress * @subpackage AI * @since 7.0.0 */ use WordPress\AiClientDependencies\Psr\Http\Client\ClientInterface; use WordPress\AiClientDependencies\Psr\Http\Message\RequestInterface; use WordPress\AiClientDependencies\Psr\Http\Message\ResponseInterface; use WordPress\AiClientDependencies\Psr\Http\Message\ResponseFactoryInterface; use WordPress\AiClientDependencies\Psr\Http\Message\StreamFactoryInterface; use WordPress\AiClient\Providers\Http\Contracts\ClientWithOptionsInterface; use WordPress\AiClient\Providers\Http\DTO\RequestOptions; use WordPress\AiClient\Providers\Http\Exception\NetworkException; /** * PSR-18 HTTP Client adapter using WordPress HTTP API. * * Allows WordPress HTTP functions to be used as a PSR-18 compliant HTTP client * for the AI Client SDK. * * @since 7.0.0 * @internal Intended only to wire up the PHP AI Client SDK to WordPress's HTTP client. * @access private */ class WP_AI_Client_HTTP_Client implements ClientInterface, ClientWithOptionsInterface { /** * Response factory instance. * * @since 7.0.0 */ private ResponseFactoryInterface $response_factory; /** * Stream factory instance. * * @since 7.0.0 */ private StreamFactoryInterface $stream_factory; /** * Constructor. * * @since 7.0.0 * * @param ResponseFactoryInterface $response_factory PSR-17 Response factory. * @param StreamFactoryInterface $stream_factory PSR-17 Stream factory. */ public function __construct( ResponseFactoryInterface $response_factory, StreamFactoryInterface $stream_factory ) { $this->response_factory = $response_factory; $this->stream_factory = $stream_factory; } /** * Sends a PSR-7 request and returns a PSR-7 response. * * @since 7.0.0 * * @param RequestInterface $request The PSR-7 request. * @return ResponseInterface The PSR-7 response. * * @throws NetworkException If the WordPress HTTP request fails. */ public function sendRequest( RequestInterface $request ): ResponseInterface { $args = $this->prepare_wp_args( $request ); $url = (string) $request->getUri(); $response = wp_safe_remote_request( $url, $args ); if ( is_wp_error( $response ) ) { $message = sprintf( /* translators: 1: HTTP method (e.g. GET, POST). 2: Request URL. 3: Error message. */ __( 'Network error occurred while sending %1$s request to %2$s: %3$s' ), $request->getMethod(), $url, $response->get_error_message() ); throw new NetworkException( $message ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped } return $this->create_psr_response( $response ); } /** * Sends a PSR-7 request with transport options and returns a PSR-7 response. * * @since 7.0.0 * * @param RequestInterface $request The PSR-7 request. * @param RequestOptions $options Transport options for the request. * @return ResponseInterface The PSR-7 response. * * @throws NetworkException If the WordPress HTTP request fails. */ public function sendRequestWithOptions( RequestInterface $request, RequestOptions $options ): ResponseInterface { $args = $this->prepare_wp_args( $request, $options ); $url = (string) $request->getUri(); $response = wp_safe_remote_request( $url, $args ); if ( is_wp_error( $response ) ) { $message = sprintf( /* translators: 1: Request URL. 2: Error message. */ __( 'Network error occurred while sending request to %1$s: %2$s' ), $url, $response->get_error_message() ); throw new NetworkException( $message, // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped $response->get_error_code() ? (int) $response->get_error_code() : 0 ); } return $this->create_psr_response( $response ); } /** * Prepares WordPress HTTP API arguments from a PSR-7 request. * * @since 7.0.0 * * @param RequestInterface $request The PSR-7 request. * @param RequestOptions|null $options Optional transport options for the request. * @return array<string, mixed> WordPress HTTP API arguments. */ private function prepare_wp_args( RequestInterface $request, ?RequestOptions $options = null ): array { $args = array( 'method' => $request->getMethod(), 'headers' => $this->prepare_headers( $request ), 'body' => $this->prepare_body( $request ), 'httpversion' => $request->getProtocolVersion(), 'blocking' => true, ); if ( null !== $options ) { if ( null !== $options->getTimeout() ) { $args['timeout'] = $options->getTimeout(); } if ( null !== $options->getMaxRedirects() ) { $args['redirection'] = $options->getMaxRedirects(); } } return $args; } /** * Prepares headers for WordPress HTTP API. * * @since 7.0.0 * * @param RequestInterface $request The PSR-7 request. * @return array<string, string> Headers array for WordPress HTTP API. */ private function prepare_headers( RequestInterface $request ): array { $headers = array(); foreach ( $request->getHeaders() as $name => $values ) { $headers[ (string) $name ] = implode( ', ', $values ); } return $headers; } /** * Prepares request body for WordPress HTTP API. * * @since 7.0.0 * * @param RequestInterface $request The PSR-7 request. * @return string|null The request body. */ private function prepare_body( RequestInterface $request ): ?string { $body = $request->getBody(); if ( $body->getSize() === 0 ) { return null; } if ( $body->isSeekable() ) { $body->rewind(); } return (string) $body; } /** * Creates a PSR-7 response from a WordPress HTTP response. * * @since 7.0.0 * * @param array<string, mixed> $wp_response WordPress HTTP API response array. * @return ResponseInterface PSR-7 response. */ private function create_psr_response( array $wp_response ): ResponseInterface { $status_code = wp_remote_retrieve_response_code( $wp_response ); $reason_phrase = wp_remote_retrieve_response_message( $wp_response ); $headers = wp_remote_retrieve_headers( $wp_response ); $body = wp_remote_retrieve_body( $wp_response ); $response = $this->response_factory->createResponse( (int) $status_code, $reason_phrase ); if ( $headers instanceof WP_HTTP_Requests_Response ) { $headers = $headers->get_headers(); } if ( is_array( $headers ) || $headers instanceof Traversable ) { foreach ( $headers as $name => $value ) { $response = $response->withHeader( $name, $value ); } } if ( ! empty( $body ) ) { $stream = $this->stream_factory->createStream( $body ); $response = $response->withBody( $stream ); } return $response; } }
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