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wp-content/plugins/wordpress-seo/admin/endpoints/class-endpoint-file-size.php

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+<?php
+/**
+ * WPSEO plugin file.
+ *
+ * @package WPSEO\Admin\Endpoints
+ */
+
+/**
+ * Represents an implementation of the WPSEO_Endpoint interface to register one or multiple endpoints.
+ */
+class WPSEO_Endpoint_File_Size implements WPSEO_Endpoint {
+
+	/**
+	 * The namespace of the REST route.
+	 *
+	 * @var string
+	 */
+	const REST_NAMESPACE = 'yoast/v1';
+
+	/**
+	 * The route of the endpoint to retrieve the file size.
+	 *
+	 * @var string
+	 */
+	const ENDPOINT_SINGULAR = 'file_size';
+
+	/**
+	 * The name of the capability needed to retrieve data using the endpoints.
+	 *
+	 * @var string
+	 */
+	const CAPABILITY_RETRIEVE = 'manage_options';
+
+	/**
+	 * The service provider.
+	 *
+	 * @var WPSEO_File_Size_Service
+	 */
+	private $service;
+
+	/**
+	 * Sets the service provider.
+	 *
+	 * @param WPSEO_File_Size_Service $service The service provider.
+	 */
+	public function __construct( WPSEO_File_Size_Service $service ) {
+		$this->service = $service;
+	}
+
+	/**
+	 * Registers the routes for the endpoints.
+	 *
+	 * @return void
+	 */
+	public function register() {
+		$route_args = [
+			'methods'             => 'GET',
+			'args'                => [
+				'url' => [
+					'required'    => true,
+					'type'        => 'string',
+					'description' => 'The url to retrieve',
+				],
+			],
+			'callback'            => [
+				$this->service,
+				'get',
+			],
+			'permission_callback' => [
+				$this,
+				'can_retrieve_data',
+			],
+		];
+		register_rest_route( self::REST_NAMESPACE, self::ENDPOINT_SINGULAR, $route_args );
+	}
+
+	/**
+	 * Determines whether or not data can be retrieved for the registered endpoints.
+	 *
+	 * @return bool Whether or not data can be retrieved.
+	 */
+	public function can_retrieve_data() {
+		return current_user_can( self::CAPABILITY_RETRIEVE );
+	}
+}

wp-content/plugins/wordpress-seo/admin/endpoints/class-endpoint-statistics.php

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+<?php
+/**
+ * WPSEO plugin file.
+ *
+ * @package WPSEO\Admin\Statistics
+ */
+
+/**
+ * Represents an implementation of the WPSEO_Endpoint interface to register one or multiple endpoints.
+ */
+class WPSEO_Endpoint_Statistics implements WPSEO_Endpoint {
+
+	/**
+	 * The namespace of the REST route.
+	 *
+	 * @var string
+	 */
+	const REST_NAMESPACE = 'yoast/v1';
+
+	/**
+	 * The route of the statistics endpoint.
+	 *
+	 * @var string
+	 */
+	const ENDPOINT_RETRIEVE = 'statistics';
+
+	/**
+	 * The name of the capability needed to retrieve data using the endpoints.
+	 *
+	 * @var string
+	 */
+	const CAPABILITY_RETRIEVE = 'read';
+
+	/**
+	 * Service to use.
+	 *
+	 * @var WPSEO_Statistics_Service
+	 */
+	protected $service;
+
+	/**
+	 * Constructs the WPSEO_Endpoint_Statistics class and sets the service to use.
+	 *
+	 * @param WPSEO_Statistics_Service $service Service to use.
+	 */
+	public function __construct( WPSEO_Statistics_Service $service ) {
+		$this->service = $service;
+	}
+
+	/**
+	 * Registers the REST routes that are available on the endpoint.
+	 */
+	public function register() {
+		// Register fetch config.
+		$route_args = [
+			'methods'             => 'GET',
+			'callback'            => [ $this->service, 'get_statistics' ],
+			'permission_callback' => [ $this, 'can_retrieve_data' ],
+		];
+		register_rest_route( self::REST_NAMESPACE, self::ENDPOINT_RETRIEVE, $route_args );
+	}
+
+	/**
+	 * Determines whether or not data can be retrieved for the registered endpoints.
+	 *
+	 * @return bool Whether or not data can be retrieved.
+	 */
+	public function can_retrieve_data() {
+		return current_user_can( self::CAPABILITY_RETRIEVE );
+	}
+}

wp-content/plugins/wordpress-seo/admin/endpoints/class-endpoint.php

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+<?php
+/**
+ * WPSEO plugin file.
+ *
+ * @package WPSEO\Admin\Endpoints
+ */
+
+/**
+ * Dictates the required methods for an Endpoint implementation.
+ */
+interface WPSEO_Endpoint {
+
+	/**
+	 * Registers the routes for the endpoints.
+	 *
+	 * @return void
+	 */
+	public function register();
+
+	/**
+	 * Determines whether or not data can be retrieved for the registered endpoints.
+	 *
+	 * @return bool Whether or not data can be retrieved.
+	 */
+	public function can_retrieve_data();
+}