mirror of
https://gh.wpcy.net/https://github.com/discourse/wp-discourse.git
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266 lines
8.7 KiB
PHP
Vendored
266 lines
8.7 KiB
PHP
Vendored
<?php
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/**
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* Syncs Discourse comments with WordPress posts.
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*
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* @package WPDiscourse
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*/
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namespace WPDiscourse\DiscourseComment;
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use WPDiscourse\Utilities\Utilities as DiscourseUtilities;
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/**
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* Class DiscourseComment
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*/
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class DiscourseComment {
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/**
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* Gives access to the plugin options.
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*
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* @access protected
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* @var mixed|void
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*/
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protected $options;
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/**
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* DiscourseComment constructor.
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*/
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public function __construct() {
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add_action( 'init', array( $this, 'setup_options' ) );
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add_filter( 'get_comments_number', array( $this, 'get_comments_number' ), 10, 2 );
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add_action( 'wpdc_sync_discourse_comments', array( $this, 'sync_comments' ) );
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add_filter( 'comments_template', array( $this, 'comments_template' ), 20, 1 );
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add_filter( 'wp_kses_allowed_html', array( $this, 'extend_allowed_html' ), 10, 2 );
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add_action( 'wp_enqueue_scripts', array( $this, 'discourse_comments_js' ) );
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}
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/**
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* Setup options.
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*/
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public function setup_options() {
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$this->options = DiscourseUtilities::get_options();
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}
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/**
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* Adds data-youtube-id to the allowable div attributes.
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*
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* Discourse returns the youtube video id as the value of the 'data-youtube-attribute',
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* this function makes it possible to filter the comments with `wp_kses_post` without
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* stripping out that attribute.
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*
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* @param array $allowedposttags The array of allowed post tags.
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* @param string $context The current context ('post', 'data', etc.).
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*
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* @return mixed
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*/
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public function extend_allowed_html( $allowedposttags, $context ) {
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if ( 'post' === $context ) {
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$allowedposttags['div'] = array(
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'class' => true,
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'id' => true,
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'style' => true,
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'title' => true,
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'role' => true,
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'data-youtube-id' => array(),
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);
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}
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return $allowedposttags;
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}
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/**
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* Enqueues the `comments.js` script.
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*
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* Hooks into 'wp_enqueue_scripts'.
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*/
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function discourse_comments_js() {
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// Is the query for an existing single post of any of the allowed_post_types?
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if ( isset( $this->options['allowed_post_types'] ) && is_singular( $this->options['allowed_post_types'] ) ) {
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if ( $this->use_discourse_comments( get_the_ID() ) ) {
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wp_enqueue_script(
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'discourse-comments-js',
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WPDISCOURSE_URL . '/js/comments.js',
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array( 'jquery' ),
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get_option( 'discourse_version' ),
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true
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);
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// Localize script.
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$data = array(
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'url' => $this->options['url'],
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);
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wp_localize_script( 'discourse-comments-js', 'discourse', $data );
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}
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}
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}
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/**
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* Checks if a post is using Discourse comments.
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*
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* @param int $postid The ID of the post.
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*
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* @return bool|int
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*/
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protected function use_discourse_comments( $postid ) {
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if ( empty( $this->options['use-discourse-comments'] ) ) {
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return 0;
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}
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$setting = get_post_meta( $postid, 'publish_to_discourse', true );
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return 1 === intval( $setting );
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}
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/**
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* Syncs Discourse comments to WordPress.
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*
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* @param int $postid The WordPress post id.
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*/
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function sync_comments( $postid ) {
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global $wpdb;
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$discourse_options = $this->options;
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$use_discourse_webhook = ! empty( $discourse_options['use-discourse-webhook'] );
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$time = date_create()->format( 'U' );
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if ( ! $use_discourse_webhook ) {
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// Every 10 minutes do a json call to sync comment count and top comments.
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$last_sync = (int) get_post_meta( $postid, 'discourse_last_sync', true );
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$sync_period = apply_filters( 'wpdc_comment_sync_period', 600, $postid );
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$sync_post = $last_sync + $sync_period < $time;
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} else {
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$sync_post = ( 1 === intval( get_post_meta( $postid, 'wpdc_sync_post_comments', true ) ) );
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}
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if ( $sync_post ) {
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// Avoids a double sync.
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wp_cache_set( 'discourse_comments_lock', $wpdb->get_row( "SELECT GET_LOCK( 'discourse_lock', 0 ) got_it" ) );
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if ( 1 === intval( wp_cache_get( 'discourse_comments_lock' )->got_it ) ) {
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if ( 'publish' === get_post_status( $postid ) ) {
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$comment_count = intval( $discourse_options['max-comments'] );
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$min_trust_level = intval( $discourse_options['min-trust-level'] );
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$min_score = intval( $discourse_options['min-score'] );
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$min_replies = intval( $discourse_options['min-replies'] );
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$bypass_trust_level_score = intval( $discourse_options['bypass-trust-level-score'] );
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$options = 'best=' . $comment_count . '&min_trust_level=' . $min_trust_level . '&min_score=' . $min_score;
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$options = $options . '&min_replies=' . $min_replies . '&bypass_trust_level_score=' . $bypass_trust_level_score;
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if ( isset( $discourse_options['only-show-moderator-liked'] ) && 1 === intval( $discourse_options['only-show-moderator-liked'] ) ) {
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$options = $options . '&only_moderator_liked=true';
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}
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$options = $options . '&api_key=' . $discourse_options['api-key'] . '&api_username=' . $discourse_options['publish-username'];
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$discourse_permalink = get_post_meta( $postid, 'discourse_permalink', true );
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if ( ! $discourse_permalink ) {
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return 0;
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}
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$permalink = esc_url_raw( $discourse_permalink ) . '/wordpress.json?' . $options;
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$result = wp_remote_get( $permalink );
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// Todo: if there is a 404 response, delete the post's Discourse metadata.
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if ( DiscourseUtilities::validate( $result ) ) {
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$json = json_decode( $result['body'] );
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if ( isset( $json->posts_count ) ) {
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$posts_count = $json->posts_count - 1;
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if ( $posts_count < 0 ) {
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$posts_count = 0;
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}
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update_post_meta( $postid, 'discourse_comments_count', $posts_count );
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update_post_meta( $postid, 'discourse_comments_raw', esc_sql( $result['body'] ) );
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}
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}
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update_post_meta( $postid, 'discourse_last_sync', $time );
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update_post_meta( $postid, 'wpdc_sync_post_comments', 0 );
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}// End if().
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}// End if().
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wp_cache_set( 'discourse_comments_lock', $wpdb->get_results( "SELECT RELEASE_LOCK( 'discourse_lock' )" ) );
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}// End if().
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}
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/**
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* Loads the comments template.
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*
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* Hooks into 'comments_template'.
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*
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* @param string $old The comments template returned by WordPress.
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*
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* @return string
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*/
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function comments_template( $old ) {
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global $post;
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if ( $this->use_discourse_comments( $post->ID ) ) {
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$this->sync_comments( $post->ID );
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$options = $this->options;
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// Use $post->comment_count because get_comments_number will return the Discourse comments
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// number for posts that are published to Discourse.
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$num_wp_comments = $post->comment_count;
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if ( empty( $options['show-existing-comments'] ) || 0 === intval( $num_wp_comments ) ) {
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// Only show the Discourse comments.
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return WPDISCOURSE_PATH . 'templates/comments.php';
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} else {
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// Show the Discourse comments then show the existing WP comments (in $old).
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include WPDISCOURSE_PATH . 'templates/comments.php';
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echo '<div class="discourse-existing-comments-heading">' . wp_kses_post( $options['existing-comments-heading'] ) . '</div>';
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return $old;
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}
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}
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// Show the existing WP comments.
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return $old;
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}
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/**
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* Returns the 'discourse_comments_count' for posts that use Discourse comments.
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*
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* Returns the sum of the Discourse comments and the WordPress comments for posts that have both.
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*
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* @param int $count The comment count supplied by WordPress.
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* @param int $post_id The ID of the post.
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*
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* @return mixed
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*/
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function get_comments_number( $count, $post_id ) {
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if ( $this->use_discourse_comments( $post_id ) ) {
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$single_page = is_single( $post_id ) || is_page( $post_id );
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$single_page = apply_filters( 'wpdc_single_page_comment_number_sync', $single_page, $post_id );
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if ( empty( $this->options['use-discourse-webhook'] ) ) {
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// Only automatically sync comments for individual posts, it's too inefficient to do this with an archive page.
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if ( $single_page ) {
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$this->sync_comments( $post_id );
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} else {
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// For archive pages, check $last_sync against $archive_page_sync_period.
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$archive_page_sync_period = intval( apply_filters( 'discourse_archive_page_sync_period', DAY_IN_SECONDS, $post_id ) );
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$last_sync = intval( get_post_meta( $post_id, 'discourse_last_sync', true ) );
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if ( $last_sync + $archive_page_sync_period < time() ) {
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$this->sync_comments( $post_id );
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}
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}
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}
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$count = intval( get_post_meta( $post_id, 'discourse_comments_count', true ) );
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// If WordPress comments are also being used, add them to the comment count.
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if ( ! empty( $this->options['show-existing-comments'] ) ) {
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$current_post = get_post( $post_id );
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$wp_comment_count = $current_post->comment_count;
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$count = $count + $wp_comment_count;
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}
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}
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return $count;
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}
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}
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