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<?php
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/**
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* This class adds REST routes to update the count and return the list of popular posts.
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*
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* @package Top_Ten
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*/
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// If this file is called directly, abort.
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if ( ! defined( 'WPINC' ) ) {
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die;
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}
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/**
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* Query API: Top_Ten_Query class.
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*
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* @since 3.0.0
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*/
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class Top_Ten_REST_API extends \WP_REST_Controller {
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/**
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* Main constructor.
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*
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* @since 3.0.0
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*/
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public function __construct() {
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$this->namespace = 'top-10/v1';
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$this->posts_route = 'popular-posts';
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$this->tracker_route = 'tracker';
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}
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/**
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* Initialises the Top 10 REST API adding the necessary routes.
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*
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* @since 3.0.0
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*/
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public function register_routes() {
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register_rest_route(
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$this->namespace,
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'/' . $this->posts_route,
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array(
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'methods' => \WP_REST_Server::READABLE,
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'callback' => array( $this, 'get_items' ),
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'permission_callback' => array( $this, 'permissions_check' ),
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'args' => $this->get_items_params(),
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)
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);
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register_rest_route(
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$this->namespace,
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'/' . $this->posts_route . '/(?P<id>[\d]+)',
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array(
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'methods' => \WP_REST_Server::READABLE,
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'callback' => array( $this, 'get_item' ),
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'permission_callback' => array( $this, 'permissions_check' ),
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'args' => array(
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'id' => array(
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'description' => __( 'Post ID.', 'top-10' ),
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'type' => 'integer',
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),
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),
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)
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);
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register_rest_route(
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$this->namespace,
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'/' . $this->tracker_route,
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array(
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'methods' => \WP_REST_Server::CREATABLE,
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'callback' => array( $this, 'update_post_count' ),
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'permission_callback' => array( $this, 'permissions_check' ),
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'args' => $this->get_tracker_params(),
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)
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);
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}
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/**
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* Check if a given request has access to get items
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*
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* @param WP_REST_Request $request Full data about the request.
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*
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* @return WP_Error|bool
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*/
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public function permissions_check( $request ) {
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return apply_filters( 'top_ten_rest_api_permissions_check', true, $request );
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}
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/**
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* Get popular posts.
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*
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* @since 3.0.0
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*
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* @param WP_REST_Request $request WP Rest request.
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* @return mixed|\WP_REST_Response Array of post objects or post IDs.
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*/
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public function get_items( $request ) {
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$popular_posts = array();
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$args = $request->get_params();
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/**
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* Filter the REST API arguments before they passed to get_tptn_posts().
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*
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* @since 3.0.0
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*
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* @param array $args Arguments array.
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* @param WP_REST_Request $request WP Rest request.
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*/
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$args = apply_filters( 'top_ten_rest_api_get_tptn_posts_args', $args, $request );
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$results = get_tptn_posts( $args );
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if ( is_array( $results ) && ! empty( $results ) ) {
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foreach ( $results as $popular_post ) {
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if ( ! $this->check_read_permission( $popular_post ) ) {
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continue;
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}
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$popular_posts[] = $this->prepare_item( $popular_post, $request );
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}
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}
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return rest_ensure_response( $popular_posts );
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}
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/**
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* Get a popular post by ID. Also includes the number of views.
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*
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* @since 3.0.0
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*
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* @param WP_REST_Request $request WP Rest request.
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* @return mixed|\WP_REST_Response Array of post objects or post IDs.
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*/
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public function get_item( $request ) {
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$id = $request->get_param( 'id' );
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$error = new WP_Error(
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'rest_post_invalid_id',
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__( 'Invalid post ID.', 'top-10' ),
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array( 'status' => 404 )
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);
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if ( (int) $id <= 0 ) {
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return $error;
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}
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$post = get_post( (int) $id );
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if ( empty( $post ) || empty( $post->ID ) || ! $this->check_read_permission( $post ) ) {
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return $error;
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}
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$post = $this->prepare_item( $post, $request );
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return rest_ensure_response( $post );
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}
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/**
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* Get a popular post by ID. Also includes the number of views.
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*
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* @since 3.0.0
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*
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* @param WP_Post $popular_post Popular Post object.
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* @param WP_REST_Request $request WP Rest request.
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* @return array|mixed The formatted Popular Post object.
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*/
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public function prepare_item( $popular_post, $request ) {
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// Need to prepare items for the rest response.
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$posts_controller = new \WP_REST_Posts_Controller( $popular_post->post_type, $request );
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$data = $posts_controller->prepare_item_for_response( $popular_post, $request );
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// Add pageviews from popular_post object to response.
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$visits = isset( $popular_post->visits ) ? $popular_post->visits : get_tptn_post_count_only( $popular_post->ID );
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$data->data['visits'] = absint( $visits );
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return $this->prepare_response_for_collection( $data );
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}
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/**
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* Update post count.
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*
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* @since 3.0.0
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*
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* @param WP_REST_Request $request WP Rest request.
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* @return mixed|\WP_REST_Response Array of post objects or post IDs.
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*/
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public function update_post_count( $request ) {
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$id = absint( $request->get_param( 'top_ten_id' ) );
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$blog_id = absint( $request->get_param( 'top_ten_blog_id' ) );
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$activate_counter = absint( $request->get_param( 'activate_counter' ) );
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$top_ten_debug = absint( $request->get_param( 'top_ten_debug' ) );
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$str = tptn_update_count( $id, $blog_id, $activate_counter );
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if ( 1 === $top_ten_debug ) {
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return rest_ensure_response( $str );
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} else {
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$response = new \WP_REST_Response( '', 204 );
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$response->header( 'Cache-Control', 'max-age=15, s-maxage=0' );
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return $response;
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}
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}
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/**
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* Get the arguments for fetching the popular posts.
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*
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* @since 3.0.0
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*
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* @return array Top 10 REST API popular posts arguments.
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*/
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public function get_items_params() {
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$args = array(
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'limit' => array(
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'description' => esc_html__( 'Number of posts', 'top-10' ),
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'type' => 'integer',
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'sanitize_callback' => 'absint',
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),
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'post_types' => array(
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'description' => esc_html__( 'Post types', 'top-10' ),
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'type' => 'string',
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),
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);
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return apply_filters( 'top_ten_rest_api_get_items_params', $args );
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}
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/**
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* Get the arguments for tracking posts.
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*
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* @since 3.0.0
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*
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* @return array Top 10 REST API popular posts arguments.
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*/
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public function get_tracker_params() {
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$args = array(
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'top_ten_id' => array(
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'description' => esc_html__( 'ID of the post.', 'top-10' ),
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'type' => 'integer',
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'sanitize_callback' => 'absint',
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),
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'top_ten_blog_id' => array(
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'description' => esc_html__( 'Blog ID of the post.', 'top-10' ),
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'type' => 'integer',
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'sanitize_callback' => 'absint',
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),
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'activate_counter' => array(
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'description' => esc_html__( 'Activate counter flag.', 'top-10' ),
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'type' => 'integer',
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'sanitize_callback' => 'absint',
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),
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'top_ten_debug' => array(
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'description' => esc_html__( 'Debug flag.', 'top-10' ),
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'type' => 'integer',
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'sanitize_callback' => 'absint',
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),
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);
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return apply_filters( 'top_ten_rest_api_get_tracker_params', $args );
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}
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/**
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* Checks if a given post type can be viewed or managed.
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*
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* @since 3.0.0
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*
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* @param WP_Post_Type|string $post_type Post type name or object.
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* @return bool Whether the post type is allowed in REST.
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*/
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protected function check_is_post_type_allowed( $post_type ) {
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if ( ! is_object( $post_type ) ) {
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$post_type = get_post_type_object( $post_type );
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}
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if ( ! empty( $post_type ) && ! empty( $post_type->show_in_rest ) ) {
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return true;
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}
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return false;
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}
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/**
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* Checks if a post can be read.
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*
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* Correctly handles posts with the inherit status.
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*
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* @since 3.0.0
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*
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* @param WP_Post $post Post object.
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* @return bool Whether the post can be read.
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*/
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public function check_read_permission( $post ) {
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$post_type = get_post_type_object( $post->post_type );
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if ( ! $this->check_is_post_type_allowed( $post_type ) ) {
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return false;
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}
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// Is the post readable?
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if ( 'publish' === $post->post_status || current_user_can( 'read_post', $post->ID ) ) {
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return true;
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}
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$post_status_obj = get_post_status_object( $post->post_status );
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if ( $post_status_obj && $post_status_obj->public ) {
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return true;
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}
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// Can we read the parent if we're inheriting?
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if ( 'inherit' === $post->post_status && $post->post_parent > 0 ) {
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$parent = get_post( $post->post_parent );
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if ( $parent ) {
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return $this->check_read_permission( $parent );
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}
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}
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/*
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* If there isn't a parent, but the status is set to inherit, assume
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* it's published (as per get_post_status()).
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*/
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if ( 'inherit' === $post->post_status ) {
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return true;
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}
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return false;
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}
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}
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/**
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* Function to register our new routes from the controller.
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*
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* @since 3.0.0
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*/
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function tptn_register_rest_routes() {
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$controller = new Top_Ten_REST_API();
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$controller->register_routes();
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}
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add_action( 'rest_api_init', 'tptn_register_rest_routes' );
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