1143 lines
31 KiB
PHP
1143 lines
31 KiB
PHP
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<?php
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/**
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* Plugin Name: Display Recent WordPress Posts Widget
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* Description: Displays recent posts from a WordPress.com or Jetpack-enabled self-hosted WordPress site.
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* Version: 1.0
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* Author: Brad Angelcyk, Kathryn Presner, Justin Shreve, Carolyn Sonnek
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* Author URI: http://automattic.com
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* License: GPL2
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*/
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/**
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* Disable direct access/execution to/of the widget code.
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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add_action( 'widgets_init', 'jetpack_display_posts_widget' );
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function jetpack_display_posts_widget() {
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register_widget( 'Jetpack_Display_Posts_Widget' );
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}
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/**
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* Cron tasks
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*/
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add_filter( 'cron_schedules', 'jetpack_display_posts_widget_cron_intervals' );
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/**
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* Adds 10 minute running interval to the cron schedules.
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*
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* @param array $current_schedules Currently defined schedules list.
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*
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* @return array
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*/
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function jetpack_display_posts_widget_cron_intervals( $current_schedules ) {
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/**
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* Only add the 10 minute interval if it wasn't already set.
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*/
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if ( ! isset( $current_schedules['minutes_10'] ) ) {
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$current_schedules['minutes_10'] = array(
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'interval' => 10 * MINUTE_IN_SECONDS,
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'display' => 'Every 10 minutes'
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);
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}
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return $current_schedules;
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}
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/**
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* Execute the cron task
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*/
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add_action( 'jetpack_display_posts_widget_cron_update', 'jetpack_display_posts_update_cron_action' );
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function jetpack_display_posts_update_cron_action() {
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$widget = new Jetpack_Display_Posts_Widget();
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$widget->cron_task();
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}
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/**
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* Handle activation procedures for the cron.
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*
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* `updating_jetpack_version` - Handle cron activation when Jetpack gets updated. It's here
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* to cover the first cron activation after the update.
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*
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* `jetpack_activate_module_widgets` - Activate the cron when the Extra Sidebar widgets are activated.
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*
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* `activated_plugin` - Activate the cron when Jetpack gets activated.
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*
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*/
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add_action( 'updating_jetpack_version', 'jetpack_display_posts_widget_conditionally_activate_cron' );
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add_action( 'jetpack_activate_module_widgets', 'Jetpack_Display_Posts_Widget::activate_cron' );
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add_action( 'activated_plugin', 'jetpack_conditionally_activate_cron_on_plugin_activation' );
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/**
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* Executed when Jetpack gets activated. Tries to activate the cron if it is needed.
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*
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* @param string $plugin_file_name The plugin file that was activated.
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*/
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function jetpack_conditionally_activate_cron_on_plugin_activation( $plugin_file_name ) {
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if ( plugin_basename( JETPACK__PLUGIN_FILE ) === $plugin_file_name ) {
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jetpack_display_posts_widget_conditionally_activate_cron();
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}
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}
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/**
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* Activates the cron only when needed.
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* @see Jetpack_Display_Posts_Widget::should_cron_be_running
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*/
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function jetpack_display_posts_widget_conditionally_activate_cron() {
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$widget = new Jetpack_Display_Posts_Widget();
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if ( $widget->should_cron_be_running() ) {
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$widget->activate_cron();
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}
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unset( $widget );
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}
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/**
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* End of cron activation handling.
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*/
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/**
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* Handle deactivation procedures where they are needed.
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*
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* If Extra Sidebar Widgets module is deactivated, the cron is not needed.
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*
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* If Jetpack is deactivated, the cron is not needed.
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*/
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add_action( 'jetpack_deactivate_module_widgets', 'Jetpack_Display_Posts_Widget::deactivate_cron_static' );
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register_deactivation_hook( plugin_basename( JETPACK__PLUGIN_FILE ), 'Jetpack_Display_Posts_Widget::deactivate_cron_static' );
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/**
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* End of Cron tasks
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*/
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/*
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* Display a list of recent posts from a WordPress.com or Jetpack-enabled blog.
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*/
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class Jetpack_Display_Posts_Widget extends WP_Widget {
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/**
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* @var string Remote service API URL prefix.
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*/
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public $service_url = 'https://public-api.wordpress.com/rest/v1.1/';
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/**
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* @var string Widget options key prefix.
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*/
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public $widget_options_key_prefix = 'display_posts_site_data_';
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/**
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* @var string The name of the cron that will update widget data.
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*/
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public static $cron_name = 'jetpack_display_posts_widget_cron_update';
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public function __construct() {
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parent::__construct(
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// internal id
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'jetpack_display_posts_widget',
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/** This filter is documented in modules/widgets/facebook-likebox.php */
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apply_filters( 'jetpack_widget_name', __( 'Display WordPress Posts', 'jetpack' ) ),
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array(
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'description' => __( 'Displays a list of recent posts from another WordPress.com or Jetpack-enabled blog.', 'jetpack' ),
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'customize_selective_refresh' => true,
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)
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);
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if ( is_customize_preview() ) {
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
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}
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}
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/**
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* Expiring transients have a name length maximum of 45 characters,
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* so this function returns an abbreviated MD5 hash to use instead of
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* the full URI.
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*
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* @param string $site Site to get the hash for.
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*
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* @return string
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*/
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public function get_site_hash( $site ) {
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return substr( md5( $site ), 0, 21 );
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}
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/**
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* Fetch a remote service endpoint and parse it.
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*
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* Timeout is set to 15 seconds right now, because sometimes the WordPress API
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* takes more than 5 seconds to fully respond.
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*
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* Caching is used here so we can avoid re-downloading the same endpoint
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* in a single request.
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*
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* @param string $endpoint Parametrized endpoint to call.
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*
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* @param int $timeout How much time to wait for the API to respond before failing.
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*
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* @return array|WP_Error
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*/
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public function fetch_service_endpoint( $endpoint, $timeout = 15 ) {
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/**
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* Holds endpoint request cache.
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*/
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static $cache = array();
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if ( ! isset( $cache[ $endpoint ] ) ) {
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$raw_data = $this->wp_wp_remote_get( $this->service_url . ltrim( $endpoint, '/' ), array( 'timeout' => $timeout ) );
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$cache[ $endpoint ] = $this->parse_service_response( $raw_data );
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}
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return $cache[ $endpoint ];
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}
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/**
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* Parse data from service response.
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* Do basic error handling for general service and data errors
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*
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* @param array $service_response Response from the service.
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*
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* @return array|WP_Error
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*/
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public function parse_service_response( $service_response ) {
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/**
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* If there is an error, we add the error message to the parsed response
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*/
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if ( is_wp_error( $service_response ) ) {
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return new WP_Error(
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'general_error',
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__( 'An error occurred fetching the remote data.', 'jetpack' ),
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$service_response->get_error_messages()
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);
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}
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/**
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* Validate HTTP response code.
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*/
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if ( 200 !== wp_remote_retrieve_response_code( $service_response ) ) {
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return new WP_Error(
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'http_error',
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__( 'An error occurred fetching the remote data.', 'jetpack' ),
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wp_remote_retrieve_response_message( $service_response )
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);
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}
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/**
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* Extract service response body from the request.
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*/
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$service_response_body = wp_remote_retrieve_body( $service_response );
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/**
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* No body has been set in the response. This should be pretty bad.
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*/
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if ( ! $service_response_body ) {
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return new WP_Error(
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'no_body',
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__( 'Invalid remote response.', 'jetpack' ),
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'No body in response.'
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);
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}
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/**
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* Parse the JSON response from the API. Convert to associative array.
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*/
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$parsed_data = json_decode( $service_response_body );
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/**
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* If there is a problem with parsing the posts return an empty array.
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*/
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if ( is_null( $parsed_data ) ) {
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return new WP_Error(
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'no_body',
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__( 'Invalid remote response.', 'jetpack' ),
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'Invalid JSON from remote.'
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);
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}
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/**
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* Check for errors in the parsed body.
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*/
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if ( isset( $parsed_data->error ) ) {
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return new WP_Error(
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'remote_error',
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__( 'We cannot display information for this blog.', 'jetpack' ),
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$parsed_data->error
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);
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}
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/**
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* No errors found, return parsed data.
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*/
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return $parsed_data;
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}
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/**
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* Fetch site information from the WordPress public API
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*
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* @param string $site URL of the site to fetch the information for.
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*
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* @return array|WP_Error
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*/
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public function fetch_site_info( $site ) {
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$response = $this->fetch_service_endpoint( sprintf( '/sites/%s', urlencode( $site ) ) );
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return $response;
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}
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/**
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* Parse external API response from the site info call and handle errors if they occur.
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*
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* @param array|WP_Error $service_response The raw response to be parsed.
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*
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* @return array|WP_Error
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*/
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public function parse_site_info_response( $service_response ) {
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/**
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* If the service returned an error, we pass it on.
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*/
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if ( is_wp_error( $service_response ) ) {
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return $service_response;
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}
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/**
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* Check if the service returned proper site information.
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*/
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if ( ! isset( $service_response->ID ) ) {
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return new WP_Error(
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'no_site_info',
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__( 'Invalid site information returned from remote.', 'jetpack' ),
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'No site ID present in the response.'
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);
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}
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return $service_response;
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}
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||
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/**
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* Fetch list of posts from the WordPress public API.
|
||
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*
|
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* @param int $site_id The site to fetch the posts for.
|
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*
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* @return array|WP_Error
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*/
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public function fetch_posts_for_site( $site_id ) {
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$response = $this->fetch_service_endpoint(
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sprintf(
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'/sites/%1$d/posts/%2$s',
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$site_id,
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|
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/**
|
||
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* Filters the parameters used to fetch for posts in the Display Posts Widget.
|
||
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*
|
||
|
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* @see https://developer.wordpress.com/docs/api/1.1/get/sites/%24site/posts/
|
||
|
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*
|
||
|
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* @module widgets
|
||
|
|
*
|
||
|
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* @since 3.6.0
|
||
|
|
*
|
||
|
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* @param string $args Extra parameters to filter posts returned from the WordPress.com REST API.
|
||
|
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*/
|
||
|
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apply_filters( 'jetpack_display_posts_widget_posts_params', '' )
|
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|
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)
|
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);
|
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|
||
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return $response;
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
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* Parse external API response from the posts list request and handle errors if any occur.
|
||
|
|
*
|
||
|
|
* @param object|WP_Error $service_response The raw response to be parsed.
|
||
|
|
*
|
||
|
|
* @return array|WP_Error
|
||
|
|
*/
|
||
|
|
public function parse_posts_response( $service_response ) {
|
||
|
|
|
||
|
|
/**
|
||
|
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* If the service returned an error, we pass it on.
|
||
|
|
*/
|
||
|
|
if ( is_wp_error( $service_response ) ) {
|
||
|
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return $service_response;
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the service returned proper posts array.
|
||
|
|
*/
|
||
|
|
if ( ! isset( $service_response->posts ) || ! is_array( $service_response->posts ) ) {
|
||
|
|
return new WP_Error(
|
||
|
|
'no_posts',
|
||
|
|
__( 'No posts data returned by remote.', 'jetpack' ),
|
||
|
|
'No posts information set in the returned data.'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Format the posts to preserve storage space.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return $this->format_posts_for_storage( $service_response );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Format the posts for better storage. Drop all the data that is not used.
|
||
|
|
*
|
||
|
|
* @param object $parsed_data Array of posts returned by the APIs.
|
||
|
|
*
|
||
|
|
* @return array Formatted posts or an empty array if no posts were found.
|
||
|
|
*/
|
||
|
|
public function format_posts_for_storage( $parsed_data ) {
|
||
|
|
|
||
|
|
$formatted_posts = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Only go through the posts list if we have valid posts array.
|
||
|
|
*/
|
||
|
|
if ( isset( $parsed_data->posts ) && is_array( $parsed_data->posts ) ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loop through all the posts and format them appropriately.
|
||
|
|
*/
|
||
|
|
foreach ( $parsed_data->posts as $single_post ) {
|
||
|
|
|
||
|
|
$prepared_post = array(
|
||
|
|
'title' => $single_post->title ? $single_post->title : '',
|
||
|
|
'excerpt' => $single_post->excerpt ? $single_post->excerpt : '',
|
||
|
|
'featured_image' => $single_post->featured_image ? $single_post->featured_image : '',
|
||
|
|
'url' => $single_post->URL,
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Append the formatted post to the results.
|
||
|
|
*/
|
||
|
|
$formatted_posts[] = $prepared_post;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $formatted_posts;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fetch site information and posts list for a site.
|
||
|
|
*
|
||
|
|
* @param string $site Site to fetch the data for.
|
||
|
|
* @param array $original_data Optional original data to updated.
|
||
|
|
*
|
||
|
|
* @param bool $site_data_only Fetch only site information, skip posts list.
|
||
|
|
*
|
||
|
|
* @return array Updated or new data.
|
||
|
|
*/
|
||
|
|
public function fetch_blog_data( $site, $original_data = array(), $site_data_only = false ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If no optional data is supplied, initialize a new structure
|
||
|
|
*/
|
||
|
|
if ( ! empty( $original_data ) ) {
|
||
|
|
$widget_data = $original_data;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$widget_data = array(
|
||
|
|
'site_info' => array(
|
||
|
|
'last_check' => null,
|
||
|
|
'last_update' => null,
|
||
|
|
'error' => null,
|
||
|
|
'data' => array(),
|
||
|
|
),
|
||
|
|
'posts' => array(
|
||
|
|
'last_check' => null,
|
||
|
|
'last_update' => null,
|
||
|
|
'error' => null,
|
||
|
|
'data' => array(),
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Update check time and fetch site information.
|
||
|
|
*/
|
||
|
|
$widget_data['site_info']['last_check'] = time();
|
||
|
|
|
||
|
|
$site_info_raw_data = $this->fetch_site_info( $site );
|
||
|
|
$site_info_parsed_data = $this->parse_site_info_response( $site_info_raw_data );
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If there is an error with the fetched site info, save the error and update the checked time.
|
||
|
|
*/
|
||
|
|
if ( is_wp_error( $site_info_parsed_data ) ) {
|
||
|
|
$widget_data['site_info']['error'] = $site_info_parsed_data;
|
||
|
|
|
||
|
|
return $widget_data;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* If data is fetched successfully, update the data and set the proper time.
|
||
|
|
*
|
||
|
|
* Data is only updated if we have valid results. This is done this way so we can show
|
||
|
|
* something if external service is down.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
else {
|
||
|
|
$widget_data['site_info']['last_update'] = time();
|
||
|
|
$widget_data['site_info']['data'] = $site_info_parsed_data;
|
||
|
|
$widget_data['site_info']['error'] = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If only site data is needed, return it here, don't fetch posts data.
|
||
|
|
*/
|
||
|
|
if ( true === $site_data_only ) {
|
||
|
|
return $widget_data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Update check time and fetch posts list.
|
||
|
|
*/
|
||
|
|
$widget_data['posts']['last_check'] = time();
|
||
|
|
|
||
|
|
$site_posts_raw_data = $this->fetch_posts_for_site( $site_info_parsed_data->ID );
|
||
|
|
$site_posts_parsed_data = $this->parse_posts_response( $site_posts_raw_data );
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If there is an error with the fetched posts, save the error and update the checked time.
|
||
|
|
*/
|
||
|
|
if ( is_wp_error( $site_posts_parsed_data ) ) {
|
||
|
|
$widget_data['posts']['error'] = $site_posts_parsed_data;
|
||
|
|
|
||
|
|
return $widget_data;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* If data is fetched successfully, update the data and set the proper time.
|
||
|
|
*
|
||
|
|
* Data is only updated if we have valid results. This is done this way so we can show
|
||
|
|
* something if external service is down.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
else {
|
||
|
|
$widget_data['posts']['last_update'] = time();
|
||
|
|
$widget_data['posts']['data'] = $site_posts_parsed_data;
|
||
|
|
$widget_data['posts']['error'] = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $widget_data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets blog data from the cache.
|
||
|
|
*
|
||
|
|
* @param string $site
|
||
|
|
*
|
||
|
|
* @return array|WP_Error
|
||
|
|
*/
|
||
|
|
public function get_blog_data( $site ) {
|
||
|
|
// load from cache, if nothing return an error
|
||
|
|
$site_hash = $this->get_site_hash( $site );
|
||
|
|
|
||
|
|
$cached_data = $this->wp_get_option( $this->widget_options_key_prefix . $site_hash );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If the cache is empty, return an empty_cache error.
|
||
|
|
*/
|
||
|
|
if ( false === $cached_data ) {
|
||
|
|
return new WP_Error(
|
||
|
|
'empty_cache',
|
||
|
|
__( 'Information about this blog is currently being retrieved.', 'jetpack' )
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $cached_data;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Activates widget update cron task.
|
||
|
|
*/
|
||
|
|
public static function activate_cron() {
|
||
|
|
if ( ! wp_next_scheduled( self::$cron_name ) ) {
|
||
|
|
wp_schedule_event( time(), 'minutes_10', self::$cron_name );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deactivates widget update cron task.
|
||
|
|
*
|
||
|
|
* This is a wrapper over the static method as it provides some syntactic sugar.
|
||
|
|
*/
|
||
|
|
public function deactivate_cron() {
|
||
|
|
self::deactivate_cron_static();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deactivates widget update cron task.
|
||
|
|
*/
|
||
|
|
public static function deactivate_cron_static() {
|
||
|
|
$next_scheduled_time = wp_next_scheduled( self::$cron_name );
|
||
|
|
wp_unschedule_event( $next_scheduled_time, self::$cron_name );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the update cron should be running and returns appropriate result.
|
||
|
|
*
|
||
|
|
* @return bool If the cron should be running or not.
|
||
|
|
*/
|
||
|
|
public function should_cron_be_running() {
|
||
|
|
/**
|
||
|
|
* The cron doesn't need to run empty loops.
|
||
|
|
*/
|
||
|
|
$widget_instances = $this->get_instances_sites();
|
||
|
|
|
||
|
|
if ( empty( $widget_instances ) || ! is_array( $widget_instances ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) {
|
||
|
|
/**
|
||
|
|
* If Jetpack is not active or in development mode, we don't want to update widget data.
|
||
|
|
*/
|
||
|
|
if ( ! Jetpack::is_active() && ! Jetpack::is_development_mode() ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If Extra Sidebar Widgets module is not active, we don't need to update widget data.
|
||
|
|
*/
|
||
|
|
if ( ! Jetpack::is_module_active( 'widgets' ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If none of the above checks failed, then we definitely want to update widget data.
|
||
|
|
*/
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Main cron code. Updates all instances of the widget.
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function cron_task() {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If the cron should not be running, disable it.
|
||
|
|
*/
|
||
|
|
if ( false === $this->should_cron_be_running() ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$instances_to_update = $this->get_instances_sites();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If no instances are found to be updated - stop.
|
||
|
|
*/
|
||
|
|
if ( empty( $instances_to_update ) || ! is_array( $instances_to_update ) ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $instances_to_update as $site_url ) {
|
||
|
|
$this->update_instance( $site_url );
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a list of unique sites from all instances of the widget.
|
||
|
|
*
|
||
|
|
* @return array|bool
|
||
|
|
*/
|
||
|
|
public function get_instances_sites() {
|
||
|
|
|
||
|
|
$widget_settings = $this->wp_get_option( 'widget_jetpack_display_posts_widget' );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If the widget still hasn't been added anywhere, the config will not be present.
|
||
|
|
*
|
||
|
|
* In such case we don't want to continue execution.
|
||
|
|
*/
|
||
|
|
if ( false === $widget_settings || ! is_array( $widget_settings ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$urls = array();
|
||
|
|
|
||
|
|
foreach ( $widget_settings as $widget_instance_data ) {
|
||
|
|
if ( isset( $widget_instance_data['url'] ) && ! empty( $widget_instance_data['url'] ) ) {
|
||
|
|
$urls[] = $widget_instance_data['url'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make sure only unique URLs are returned.
|
||
|
|
*/
|
||
|
|
$urls = array_unique( $urls );
|
||
|
|
|
||
|
|
return $urls;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Update a widget instance.
|
||
|
|
*
|
||
|
|
* @param string $site The site to fetch the latest data for.
|
||
|
|
*/
|
||
|
|
public function update_instance( $site ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fetch current information for a site.
|
||
|
|
*/
|
||
|
|
$site_hash = $this->get_site_hash( $site );
|
||
|
|
|
||
|
|
$option_key = $this->widget_options_key_prefix . $site_hash;
|
||
|
|
|
||
|
|
$instance_data = $this->wp_get_option( $option_key );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fetch blog data and save it in $instance_data.
|
||
|
|
*/
|
||
|
|
$new_data = $this->fetch_blog_data( $site, $instance_data );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If the option doesn't exist yet - create a new option
|
||
|
|
*/
|
||
|
|
if ( false === $instance_data ) {
|
||
|
|
$this->wp_add_option( $option_key, $new_data );
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->wp_update_option( $option_key, $new_data );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set up the widget display on the front end.
|
||
|
|
*
|
||
|
|
* @param array $args
|
||
|
|
* @param array $instance
|
||
|
|
*/
|
||
|
|
public function widget( $args, $instance ) {
|
||
|
|
|
||
|
|
/** This filter is documented in core/src/wp-includes/default-widgets.php */
|
||
|
|
$title = apply_filters( 'widget_title', $instance['title'] );
|
||
|
|
|
||
|
|
// Enqueue front end assets.
|
||
|
|
$this->enqueue_scripts();
|
||
|
|
|
||
|
|
echo $args['before_widget'];
|
||
|
|
|
||
|
|
$data = $this->get_blog_data( $instance['url'] );
|
||
|
|
|
||
|
|
// check for errors
|
||
|
|
if ( is_wp_error( $data ) || empty( $data['site_info']['data'] ) ) {
|
||
|
|
echo '<p>' . __( 'Cannot load blog information at this time.', 'jetpack' ) . '</p>';
|
||
|
|
echo $args['after_widget'];
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$site_info = $data['site_info']['data'];
|
||
|
|
|
||
|
|
if ( ! empty( $title ) ) {
|
||
|
|
echo $args['before_title'] . esc_html( $title . ': ' . $site_info->name ) . $args['after_title'];
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
echo $args['before_title'] . esc_html( $site_info->name ) . $args['after_title'];
|
||
|
|
}
|
||
|
|
|
||
|
|
echo '<div class="jetpack-display-remote-posts">';
|
||
|
|
|
||
|
|
if ( is_wp_error( $data['posts']['data'] ) || empty( $data['posts']['data'] ) ) {
|
||
|
|
echo '<p>' . __( 'Cannot load blog posts at this time.', 'jetpack' ) . '</p>';
|
||
|
|
echo '</div><!-- .jetpack-display-remote-posts -->';
|
||
|
|
echo $args['after_widget'];
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$posts_list = $data['posts']['data'];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Show only as much posts as we need. If we have less than configured amount,
|
||
|
|
* we must show only that much posts.
|
||
|
|
*/
|
||
|
|
$number_of_posts = min( $instance['number_of_posts'], count( $posts_list ) );
|
||
|
|
|
||
|
|
for ( $i = 0; $i < $number_of_posts; $i ++ ) {
|
||
|
|
$single_post = $posts_list[ $i ];
|
||
|
|
$post_title = ( $single_post['title'] ) ? $single_post['title'] : '( No Title )';
|
||
|
|
|
||
|
|
$target = '';
|
||
|
|
if ( isset( $instance['open_in_new_window'] ) && $instance['open_in_new_window'] == true ) {
|
||
|
|
$target = ' target="_blank"';
|
||
|
|
}
|
||
|
|
echo '<h4><a href="' . esc_url( $single_post['url'] ) . '"' . $target . '>' . esc_html( $post_title ) . '</a></h4>' . "\n";
|
||
|
|
if ( ( $instance['featured_image'] == true ) && ( ! empty ( $single_post['featured_image'] ) ) ) {
|
||
|
|
$featured_image = $single_post['featured_image'];
|
||
|
|
/**
|
||
|
|
* Allows setting up custom Photon parameters to manipulate the image output in the Display Posts widget.
|
||
|
|
*
|
||
|
|
* @see https://developer.wordpress.com/docs/photon/
|
||
|
|
*
|
||
|
|
* @module widgets
|
||
|
|
*
|
||
|
|
* @since 3.6.0
|
||
|
|
*
|
||
|
|
* @param array $args Array of Photon Parameters.
|
||
|
|
*/
|
||
|
|
$image_params = apply_filters( 'jetpack_display_posts_widget_image_params', array() );
|
||
|
|
echo '<a title="' . esc_attr( $post_title ) . '" href="' . esc_url( $single_post['url'] ) . '"' . $target . '><img src="' . jetpack_photon_url( $featured_image, $image_params ) . '" alt="' . esc_attr( $post_title ) . '"/></a>';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $instance['show_excerpts'] == true ) {
|
||
|
|
echo $single_post['excerpt'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
echo '</div><!-- .jetpack-display-remote-posts -->';
|
||
|
|
echo $args['after_widget'];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Scan and extract first error from blog data array.
|
||
|
|
*
|
||
|
|
* @param array|WP_Error $blog_data Blog data to scan for errors.
|
||
|
|
*
|
||
|
|
* @return string First error message found
|
||
|
|
*/
|
||
|
|
public function extract_errors_from_blog_data( $blog_data ) {
|
||
|
|
|
||
|
|
$errors = array(
|
||
|
|
'message' => '',
|
||
|
|
'debug' => '',
|
||
|
|
'where' => '',
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* When the cache result is an error. Usually when the cache is empty.
|
||
|
|
* This is not an error case for now.
|
||
|
|
*/
|
||
|
|
if ( is_wp_error( $blog_data ) ) {
|
||
|
|
return $errors;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loop through `site_info` and `posts` keys of $blog_data.
|
||
|
|
*/
|
||
|
|
foreach ( array( 'site_info', 'posts' ) as $info_key ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Contains information on which stage the error ocurred.
|
||
|
|
*/
|
||
|
|
$errors['where'] = $info_key;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If an error is set, we want to check it for usable messages.
|
||
|
|
*/
|
||
|
|
if ( isset( $blog_data[ $info_key ]['error'] ) && ! empty( $blog_data[ $info_key ]['error'] ) ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Extract error message from the error, if possible.
|
||
|
|
*/
|
||
|
|
if ( is_wp_error( $blog_data[ $info_key ]['error'] ) ) {
|
||
|
|
/**
|
||
|
|
* In the case of WP_Error we want to have the error message
|
||
|
|
* and the debug information available.
|
||
|
|
*/
|
||
|
|
$error_messages = $blog_data[ $info_key ]['error']->get_error_messages();
|
||
|
|
$errors['message'] = reset( $error_messages );
|
||
|
|
|
||
|
|
$extra_data = $blog_data[ $info_key ]['error']->get_error_data();
|
||
|
|
if ( is_array( $extra_data ) ) {
|
||
|
|
$errors['debug'] = implode( '; ', $extra_data );
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$errors['debug'] = $extra_data;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
elseif ( is_array( $blog_data[ $info_key ]['error'] ) ) {
|
||
|
|
/**
|
||
|
|
* In this case we don't have debug information, because
|
||
|
|
* we have no way to know the format. The widget works with
|
||
|
|
* WP_Error objects only.
|
||
|
|
*/
|
||
|
|
$errors['message'] = reset( $blog_data[ $info_key ]['error'] );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* We do nothing if no usable error is found.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $errors;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enqueue CSS and JavaScript.
|
||
|
|
*
|
||
|
|
* @since 4.0.0
|
||
|
|
*/
|
||
|
|
public function enqueue_scripts() {
|
||
|
|
wp_enqueue_style( 'jetpack_display_posts_widget', plugins_url( 'wordpress-post-widget/style.css', __FILE__ ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Display the widget administration form.
|
||
|
|
*
|
||
|
|
* @param array $instance Widget instance configuration.
|
||
|
|
*
|
||
|
|
* @return string|void
|
||
|
|
*/
|
||
|
|
public function form( $instance ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize widget configuration variables.
|
||
|
|
*/
|
||
|
|
$title = ( isset( $instance['title'] ) ) ? $instance['title'] : __( 'Recent Posts', 'jetpack' );
|
||
|
|
$url = ( isset( $instance['url'] ) ) ? $instance['url'] : '';
|
||
|
|
$number_of_posts = ( isset( $instance['number_of_posts'] ) ) ? $instance['number_of_posts'] : 5;
|
||
|
|
$open_in_new_window = ( isset( $instance['open_in_new_window'] ) ) ? $instance['open_in_new_window'] : false;
|
||
|
|
$featured_image = ( isset( $instance['featured_image'] ) ) ? $instance['featured_image'] : false;
|
||
|
|
$show_excerpts = ( isset( $instance['show_excerpts'] ) ) ? $instance['show_excerpts'] : false;
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the widget instance has errors available.
|
||
|
|
*
|
||
|
|
* Only do so if a URL is set.
|
||
|
|
*/
|
||
|
|
$update_errors = array();
|
||
|
|
|
||
|
|
if ( ! empty( $url ) ) {
|
||
|
|
$data = $this->get_blog_data( $url );
|
||
|
|
$update_errors = $this->extract_errors_from_blog_data( $data );
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:', 'jetpack' ); ?></label>
|
||
|
|
<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" />
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'url' ); ?>"><?php _e( 'Blog URL:', 'jetpack' ); ?></label>
|
||
|
|
<input class="widefat" id="<?php echo $this->get_field_id( 'url' ); ?>" name="<?php echo $this->get_field_name( 'url' ); ?>" type="text" value="<?php echo esc_attr( $url ); ?>" />
|
||
|
|
<i>
|
||
|
|
<?php _e( "Enter a WordPress.com or Jetpack WordPress site URL.", 'jetpack' ); ?>
|
||
|
|
</i>
|
||
|
|
<?php
|
||
|
|
/**
|
||
|
|
* Show an error if the URL field was left empty.
|
||
|
|
*
|
||
|
|
* The error is shown only when the widget was already saved.
|
||
|
|
*/
|
||
|
|
if ( empty( $url ) && ! preg_match( '/__i__|%i%/', $this->id ) ) {
|
||
|
|
?>
|
||
|
|
<br />
|
||
|
|
<i class="error-message"><?php echo __( 'You must specify a valid blog URL!', 'jetpack' ); ?></i>
|
||
|
|
<?php
|
||
|
|
}
|
||
|
|
?>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'number_of_posts' ); ?>"><?php _e( 'Number of Posts to Display:', 'jetpack' ); ?></label>
|
||
|
|
<select name="<?php echo $this->get_field_name( 'number_of_posts' ); ?>">
|
||
|
|
<?php
|
||
|
|
for ( $i = 1; $i <= 10; $i ++ ) {
|
||
|
|
echo '<option value="' . $i . '" ' . selected( $number_of_posts, $i ) . '>' . $i . '</option>';
|
||
|
|
}
|
||
|
|
?>
|
||
|
|
</select>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'open_in_new_window' ); ?>"><?php _e( 'Open links in new window/tab:', 'jetpack' ); ?></label>
|
||
|
|
<input type="checkbox" name="<?php echo $this->get_field_name( 'open_in_new_window' ); ?>" <?php checked( $open_in_new_window, 1 ); ?> />
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'featured_image' ); ?>"><?php _e( 'Show Featured Image:', 'jetpack' ); ?></label>
|
||
|
|
<input type="checkbox" name="<?php echo $this->get_field_name( 'featured_image' ); ?>" <?php checked( $featured_image, 1 ); ?> />
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<label for="<?php echo $this->get_field_id( 'show_excerpts' ); ?>"><?php _e( 'Show Excerpts:', 'jetpack' ); ?></label>
|
||
|
|
<input type="checkbox" name="<?php echo $this->get_field_name( 'show_excerpts' ); ?>" <?php checked( $show_excerpts, 1 ); ?> />
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Show error messages.
|
||
|
|
*/
|
||
|
|
if ( ! empty( $update_errors['message'] ) ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepare the error messages.
|
||
|
|
*/
|
||
|
|
|
||
|
|
$where_message = '';
|
||
|
|
switch ( $update_errors['where'] ) {
|
||
|
|
case 'posts':
|
||
|
|
$where_message .= __( 'An error occurred while downloading blog posts list', 'jetpack' );
|
||
|
|
break;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If something else, beside `posts` and `site_info` broke,
|
||
|
|
* don't handle it and default to blog `information`,
|
||
|
|
* as it is generic enough.
|
||
|
|
*/
|
||
|
|
case 'site_info':
|
||
|
|
default:
|
||
|
|
$where_message .= __( 'An error occurred while downloading blog information', 'jetpack' );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|
||
|
|
<p class="error-message">
|
||
|
|
<?php echo esc_html( $where_message ); ?>:
|
||
|
|
<br />
|
||
|
|
<i>
|
||
|
|
<?php echo esc_html( $update_errors['message'] ); ?>
|
||
|
|
<?php
|
||
|
|
/**
|
||
|
|
* If there is any debug - show it here.
|
||
|
|
*/
|
||
|
|
if ( ! empty( $update_errors['debug'] ) ) {
|
||
|
|
?>
|
||
|
|
<br />
|
||
|
|
<br />
|
||
|
|
<?php esc_html_e( 'Detailed information', 'jetpack' ); ?>:
|
||
|
|
<br />
|
||
|
|
<?php echo esc_html( $update_errors['debug'] ); ?>
|
||
|
|
<?php
|
||
|
|
}
|
||
|
|
?>
|
||
|
|
</i>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<?php
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function update( $new_instance, $old_instance ) {
|
||
|
|
|
||
|
|
$instance = array();
|
||
|
|
$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
|
||
|
|
$instance['url'] = ( ! empty( $new_instance['url'] ) ) ? strip_tags( $new_instance['url'] ) : '';
|
||
|
|
$instance['url'] = preg_replace( "!^https?://!is", "", $instance['url'] );
|
||
|
|
$instance['url'] = untrailingslashit( $instance['url'] );
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the URL should be with or without the www prefix before saving.
|
||
|
|
*/
|
||
|
|
if ( ! empty( $instance['url'] ) ) {
|
||
|
|
$blog_data = $this->fetch_blog_data( $instance['url'], array(), true );
|
||
|
|
|
||
|
|
if ( is_wp_error( $blog_data['site_info']['error'] ) && 'www.' === substr( $instance['url'], 0, 4 ) ) {
|
||
|
|
$blog_data = $this->fetch_blog_data( substr( $instance['url'], 4 ), array(), true );
|
||
|
|
|
||
|
|
if ( ! is_wp_error( $blog_data['site_info']['error'] ) ) {
|
||
|
|
$instance['url'] = substr( $instance['url'], 4 );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$instance['number_of_posts'] = ( ! empty( $new_instance['number_of_posts'] ) ) ? intval( $new_instance['number_of_posts'] ) : '';
|
||
|
|
$instance['open_in_new_window'] = ( ! empty( $new_instance['open_in_new_window'] ) ) ? true : '';
|
||
|
|
$instance['featured_image'] = ( ! empty( $new_instance['featured_image'] ) ) ? true : '';
|
||
|
|
$instance['show_excerpts'] = ( ! empty( $new_instance['show_excerpts'] ) ) ? true : '';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Forcefully activate the update cron when saving widget instance.
|
||
|
|
*
|
||
|
|
* So we can be sure that it will be running later.
|
||
|
|
*/
|
||
|
|
$this->activate_cron();
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If there is no cache entry for the specified URL, run a forced update.
|
||
|
|
*
|
||
|
|
* @see get_blog_data Returns WP_Error if the cache is empty, which is what is needed here.
|
||
|
|
*/
|
||
|
|
$cached_data = $this->get_blog_data( $instance['url'] );
|
||
|
|
|
||
|
|
if ( is_wp_error( $cached_data ) ) {
|
||
|
|
$this->update_instance( $instance['url'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $instance;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is just to make method mocks in the unit tests easier.
|
||
|
|
*
|
||
|
|
* @param string $param Option key to get
|
||
|
|
*
|
||
|
|
* @return mixed
|
||
|
|
*
|
||
|
|
* @codeCoverageIgnore
|
||
|
|
*/
|
||
|
|
public function wp_get_option( $param ) {
|
||
|
|
return get_option( $param );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is just to make method mocks in the unit tests easier.
|
||
|
|
*
|
||
|
|
* @param string $option_name Option name to be added
|
||
|
|
* @param mixed $option_value Option value
|
||
|
|
*
|
||
|
|
* @return mixed
|
||
|
|
*
|
||
|
|
* @codeCoverageIgnore
|
||
|
|
*/
|
||
|
|
public function wp_add_option( $option_name, $option_value ) {
|
||
|
|
return add_option( $option_name, $option_value );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is just to make method mocks in the unit tests easier.
|
||
|
|
*
|
||
|
|
* @param string $option_name Option name to be updated
|
||
|
|
* @param mixed $option_value Option value
|
||
|
|
*
|
||
|
|
* @return mixed
|
||
|
|
*
|
||
|
|
* @codeCoverageIgnore
|
||
|
|
*/
|
||
|
|
public function wp_update_option( $option_name, $option_value ) {
|
||
|
|
return update_option( $option_name, $option_value );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is just to make method mocks in the unit tests easier.
|
||
|
|
*
|
||
|
|
* @param string $url The URL to fetch
|
||
|
|
* @param array $args Optional. Request arguments.
|
||
|
|
*
|
||
|
|
* @return array|WP_Error
|
||
|
|
*
|
||
|
|
* @codeCoverageIgnore
|
||
|
|
*/
|
||
|
|
public function wp_wp_remote_get( $url, $args = array() ) {
|
||
|
|
return wp_remote_get( $url, $args );
|
||
|
|
}
|
||
|
|
}
|