<?php

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namespace ImageOptimization\Classes\Client;

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use ImageOptimization\Classes\Exceptions\Client_Exception;

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use ImageOptimization\Classes\File_Utils;

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use ImageOptimization\Classes\Image\Image;

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use ImageOptimization\Classes\Logger;

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use ImageOptimization\Modules\Stats\Classes\Optimization_Stats;

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use Throwable;

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use WP_Error;

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use ImageOptimization\Plugin;

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if ( ! defined( 'ABSPATH' ) ) {

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exit; // Exit if accessed directly.

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}

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/**

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* Class Client

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*/

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class Client {

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const BASE_URL = 'https://my.elementor.com/api/v2/image-optimizer/';

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const BASE_URL_FEEDBACK = 'https://feedback-api.prod.apps.elementor.red/apps/api/v1/';

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const STATUS_CHECK = 'status/check';

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const SITE_INFO = 'site/info';

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const SITE_INFO_TRANSIENT = 'image_optimizer_site_info_transient';

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private bool $refreshed = false;

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public static ?Client $instance = null;

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/**

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* get_instance

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* @return Client|null

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*/

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public static function get_instance(): ?Client {

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if ( ! self::$instance ) {

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self::$instance = new self();

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}

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return self::$instance;

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}

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public static function get_site_info( $endpoint = null ): array {

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$data = [

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// Which API version is used.

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'app_version' => IMAGE_OPTIMIZATION_VERSION,

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// Which language to return.

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'site_lang' => get_bloginfo( 'language' ),

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// site to connect

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'site_url' => trailingslashit( home_url() ),

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// current user

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'local_id' => get_current_user_id(),

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];

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if ( $endpoint !== self::STATUS_CHECK ) {

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// Media library stats

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$data['media_data'] = base64_encode( wp_json_encode( self::get_request_stats() ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode

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}

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return $data;

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}

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/**

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* Get site info

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* @return mixed|WP_Error|null

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*/

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public static function get_subscription_info() {

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$info = get_transient( self::SITE_INFO_TRANSIENT );

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if ( ! $info ) {

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try {

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$info = self::get_instance()->make_request( 'POST', self::SITE_INFO );

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} catch ( Throwable $t ) {

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Logger::log( Logger::LEVEL_ERROR, 'Cannot get site info response from service: ' . $t->getMessage() );

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return null;

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}

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set_transient( self::SITE_INFO_TRANSIENT, $info, ( 24 * 60 * 60 ) );

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}

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return $info;

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}

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private static function get_request_stats(): array {

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$optimization_stats = Optimization_Stats::get_image_stats();

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$image_sizes = [];

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foreach ( wp_get_registered_image_subsizes() as $image_size_key => $image_size_data ) {

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$image_sizes[] = [

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'label' => $image_size_key,

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'size' => "{$image_size_data['width']}x{$image_size_data['height']}",

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];

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}

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return [

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'not_optimized_images' => $optimization_stats['total_image_count'] - $optimization_stats['optimized_image_count'],

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'optimized_images' => $optimization_stats['optimized_image_count'],

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'images_sizes' => $image_sizes,

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];

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}

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public function make_request( $method, $endpoint, $body = [], array $headers = [], $file = false, $file_name = '' ) {

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$headers = array_replace_recursive([

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'x-elementor-image-optimizer' => IMAGE_OPTIMIZATION_VERSION,

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], $headers);

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$headers = array_replace_recursive(

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$headers,

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$this->is_connected() ? $this->generate_authentication_headers( $endpoint ) : []

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);

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$body = array_replace_recursive( $body, $this->get_site_info( $endpoint ) );

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try {

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if ( $file ) {

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$boundary = wp_generate_password( 24, false );

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$body = $this->get_upload_request_body( $body, $file, $boundary, $file_name );

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// add content type header

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$headers['Content-Type'] = 'multipart/form-data; boundary=' . $boundary;

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}

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} catch ( Client_Exception $ce ) {

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return new WP_Error( 500, $ce->getMessage() );

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}

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$response = $this->request(

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$method,

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$endpoint,

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[

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'timeout' => 100,

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'headers' => $headers,

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'body' => $body,

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]

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);

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return ( new Client_Response( $response ) )->handle();

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}

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public static function get_feedback_base_url() {

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return apply_filters( 'image_optimizer_feedback_base_url', self::BASE_URL_FEEDBACK );

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}

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private static function get_remote_url( $endpoint ): string {

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$base_url = apply_filters( 'image_optimizer_client_get_base_url', self::BASE_URL );

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if ( strpos( $endpoint, 'feedback/' ) !== false ) {

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return self::get_feedback_base_url() . $endpoint;

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}

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return $base_url . $endpoint;

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}

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protected function is_connected(): bool {

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return Plugin::instance()->modules_manager->get_modules( 'connect-manager' )->connect_instance->is_connected();

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}

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protected function generate_authentication_headers( $endpoint ): array {

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$connect_instance = Plugin::instance()->modules_manager->get_modules( 'connect-manager' )->connect_instance;

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if ( ! $connect_instance->get_is_connect_on_fly() ) {

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$headers = [

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'data' => base64_encode( // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode

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wp_json_encode( [ 'app' => 'library' ] )

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),

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'access_token' => $connect_instance->get_access_token() ?? '',

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'client_id' => $connect_instance->get_client_id() ?? '',

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];

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if ( $connect_instance->is_activated() ) {

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$headers['key'] = $connect_instance->get_activation_state() ?? '';

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}

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} else {

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$headers = $this->add_bearer_token([

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'x-elementor-apps-connect' => true,

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]);

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}

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$headers['endpoint'] = $endpoint;

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$headers['x-elementor-apps'] = 'image-optimizer';

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return $headers;

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}

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protected function request( $method, $endpoint, $args = [] ) {

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$args['method'] = $method;

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$response = wp_remote_request(

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self::get_remote_url( $endpoint ),

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$args

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);

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if ( is_wp_error( $response ) ) {

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$message = $response->get_error_message();

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return new WP_Error(

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$response->get_error_code(),

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is_array( $message ) ? join( ', ', $message ) : $message

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);

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}

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$body = wp_remote_retrieve_body( $response );

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$response_code = (int) wp_remote_retrieve_response_code( $response );

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if ( ! $response_code ) {

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return new WP_Error( 500, 'No Response' );

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}

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// Server sent a success message without content.

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if ( 'null' === $body ) {

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$body = true;

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}

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$body = json_decode( $body );

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if ( false === $body ) {

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return new WP_Error( 422, 'Wrong Server Response' );

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}

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if ( Plugin::instance()->modules_manager->get_modules( 'connect-manager' )->connect_instance->get_is_connect_on_fly() ) {

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// If the token is invalid, refresh it and try again once only.

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if ( ! $this->refreshed && ! empty( $body->message ) && ( false !== strpos( $body->message, 'Invalid Token' ) ) ) {

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Plugin::instance()->modules_manager->get_modules( 'connect-manager' )->connect_instance->refresh_token();

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$this->refreshed = true;

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$args['headers'] = $this->add_bearer_token( $args['headers'] );

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return $this->request( $method, $endpoint, $args );

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}

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}

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if ( ! in_array( $response_code, [ 200, 201 ], true ) ) {

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// In case $as_array = true.

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$message = $body->message ?? wp_remote_retrieve_response_message( $response );

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$message = is_array( $message ) ? join( ', ', $message ) : $message;

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$code = isset( $body->code ) ? (int) $body->code : $response_code;

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return new WP_Error( $code, $message );

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}

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return $body;

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}

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public function add_bearer_token( $headers ) {

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if ( $this->is_connected() ) {

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$headers['Authorization'] = 'Bearer ' . Plugin::instance()->modules_manager->get_modules( 'connect-manager' )->connect_instance->get_access_token();

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}

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return $headers;

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}

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/**

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* get_upload_request_body

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*

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* @param array $body

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* @param $file

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* @param string $boundary

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* @param string $file_name

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*

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* @return string

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* @throws Client_Exception

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*/

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private function get_upload_request_body( array $body, $file, string $boundary, string $file_name = '' ): string {

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$payload = '';

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// add all body fields as standard POST fields:

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foreach ( $body as $name => $value ) {

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$payload .= '--' . $boundary;

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$payload .= "\r\n";

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$payload .= 'Content-Disposition: form-data; name="' . esc_attr( $name ) . '"' . "\r\n\r\n";

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$payload .= $value;

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$payload .= "\r\n";

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}

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if ( is_array( $file ) ) {

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foreach ( $file as $key => $file_data ) {

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$payload .= $this->get_file_payload( $file_data['name'], $file_data['type'], $file_data['path'], $boundary );

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}

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} else {

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$image_mime = image_type_to_mime_type( exif_imagetype( $file ) );

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if (

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! in_array( $image_mime, Image::get_supported_mime_types(), true ) &&

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( 'application/octet-stream' === $image_mime && 'avif' !== File_Utils::get_extension( $file ) )

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) {

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throw new Client_Exception( "Unsupported mime type `$image_mime`" );

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}

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if ( empty( $file_name ) ) {

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$file_name = basename( $file );

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}

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$payload .= $this->get_file_payload( $file_name, $image_mime, $file, $boundary );

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}

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$payload .= '--' . $boundary . '--';

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return $payload;

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}

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/**

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* get_file_payload

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* @param string $filename

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* @param string $file_type

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* @param string $file_path

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* @param string $boundary

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* @return string

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*/

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private function get_file_payload( string $filename, string $file_type, string $file_path, string $boundary ): string {

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$name = $filename ?? basename( $file_path );

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$mine_type = 'image' === $file_type ? image_type_to_mime_type( exif_imagetype( $file_path ) ) : $file_type;

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$payload = '';

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// Upload the file

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$payload .= '--' . $boundary;

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$payload .= "\r\n";

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$payload .= 'Content-Disposition: form-data; name="' . esc_attr( $name ) . '"; filename="' . esc_attr( $name ) . '"' . "\r\n";

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$payload .= 'Content-Type: ' . $mine_type . "\r\n";

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$payload .= "\r\n";

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$payload .= file_get_contents( $file_path );

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$payload .= "\r\n";

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return $payload;

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}

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}

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