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<?php /* Plugin Name: Better Facebook Comments Plugin URI: http://betterstudio.com Description: Take advantage of powerful and unique features by integrating Facebook comments on your website instead of the standard WordPress commenting system. Version: 1.5.3 Author: BetterStudio Author URI: http://betterstudio.com License: GPL2 / // TODO: sync comments on page when new comment was added /* * Better_Facebook_Comments class wrapper for make changes safe in future * * @return Better_Facebook_Comments / function Better_Facebook_Comments() { return Better_Facebook_Comments::self(); } // Initialize Better Facebook Comments Better_Facebook_Comments(); /* * Class Better_Facebook_Comments / class Better_Facebook_Comments { /* * Contains Better_Facebook_Comments version number that used for assets for preventing cache mechanism * * @var string / private static $version = '1.5.3'; /* * Contains plugin option panel ID * * @var string / private static $panel_id = 'better_facebook_comments'; /* * Comments loading type: ajaxified\|plain * * @var string / private $comments_type; /* * Inner array of instances * * @var array / protected static $instances = array(); function __construct() { // make sure following code only one time run static $initialized; if ( $initialized ) { return; } else { $initialized = TRUE; } // Admin panel options include self::dir_path( 'includes/options/panel.php' ); // Initialize add_action( 'better-framework/after_setup', array( $this, 'bf_init' ) ); load_plugin_textdomain( 'better-studio', FALSE, 'better-facebook-comments/languages' ); } /* * Used for accessing plugin directory URL * * @param string $address * * @return string / public static function dir_url( $address = '' ) { static $url; if ( is_null( $url ) ) { $url = plugin_dir_url( __FILE__ ); } return $url . $address; } /* * Used for accessing plugin directory path * * @param string $address * * @return string / public static function dir_path( $address = '' ) { static $path; if ( is_null( $path ) ) { $path = plugin_dir_path( __FILE__ ); } return $path . $address; } /* * Returns plugin current Version * * @return string / public static function get_version() { return self::$version; } /* * Build the required object instance * * @param string $object * @param bool $fresh * @param bool $just_include * * @return Better_Facebook_Comments\|null / public static function factory( $object = 'self', $fresh = FALSE, $just_include = FALSE ) { if ( isset( self::$instances[ $object ] ) && ! $fresh ) { return self::$instances[ $object ]; } switch ( $object ) { /* * Main Better_Facebook_Comments Class / case 'self': $class = 'Better_Facebook_Comments'; break; default: return NULL; } // Just prepare/includes files if ( $just_include ) { return; } // don't cache fresh objects if ( $fresh ) { return new $class; } self::$instances[ $object ] = new $class; return self::$instances[ $object ]; } /* * Used for accessing alive instance of Better_Facebook_Comments * * @since 1.0 * * @return Better_Facebook_Comments / public static function self() { return self::factory(); } /* * Used for retrieving options simply and safely for next versions * * @param $option_key * * @return mixed\|null / public static function get_option( $option_key ) { return bf_get_option( $option_key, self::$panel_id ); } /* * Init the plugin / function bf_init() { if ( is_admin() && ! apply_filters( 'better-facebook-comments/allow-multiple', FALSE ) ) { if ( $this->get_option( 'app_id' ) && function_exists( 'Better_Disqus_Comments' ) && Better_Disqus_Comments()->get_option( 'shortname' ) ) { Better_Framework()->admin_notices()->add_notice( array( 'id' => 'facebook-and-disqus-same-time', 'msg' => __( 'You activated both <strong>Facebook Comments</strong> and <strong>Disqus Comments</strong>. Please ensure that only one comment plugin is active at a time.', 'better-studio' ) ) ); } else { Better_Framework()->admin_notices()->remove_notice( 'facebook-and-disqus-same-time' ); } } if ( $this->get_option( 'app_id' ) === '' ) { return; } // Add ajax action to do views increment add_action( 'wp_ajax_clear_better_facebook_comments', array( $this, 'clear_comments_cache' ) ); add_action( 'wp_ajax_nopriv_clear_better_facebook_comments', array( $this, 'clear_comments_cache' ) ); // Change default template if ( apply_filters( 'better-facebook-comments/override-template', TRUE ) ) { add_filter( 'comments_template', array( $this, 'custom_comments_template' ), 40 ); if ( ! is_admin() ) { // Add App ID Meta add_action( 'wp_head', array( $this, 'wp_head' ) ); // Clear themes comments count text in meta add_filter( 'better-studio/themes/meta/comments/text', array( $this, 'better_studio_themes_comment_text' ) ); // Add JS add_action( 'wp_footer', array( $this, 'wp_footer' ) ); } } add_filter( 'get_comments_number', array( $this, 'filter_get_comments_number' ), 10, 2 ); } /* * Creates script for comments loading * * @return mixed\|string / public function get_script() { $script = bf_get_local_file_content( $this->dir_path( 'js/script.js' ) ); if ( $this->comments_type === 'ajaxified' ) { $type = 'jQuery(document).on("ajaxified-comments-loaded",appendFbScript);'; } else { $type = 'appendFbScript();'; } $script = str_replace( array( '%%LOCALE%%', '%%APP-ID%%', '%%ADMIN-AJAX%%', '//%%TYPE%%', '%%POST-ID%%', ), array( $this->get_option( 'locale' ), $this->get_option( 'app_id' ), admin_url( 'admin-ajax.php' ), $type, get_the_ID(), ), $script ); return $script; } public function output() { ob_start(); ?> <div id="fb-root"></div> <script> <?php echo $this->get_script() ?> </script> <?php return ob_get_clean(); } /* * Add FB js and tags / function wp_footer() { $print = is_singular() && ! ( is_front_page() \|\| is_home() ); // Print fb.js only in homepages that was not create with Visual Composer. if ( is_front_page() && function_exists( 'publisher_is_pagebuilder_used' ) ) { $print = ! publisher_is_pagebuilder_used(); } // Add Facebook js and tags if ( $print ) { echo $this->output(); } } /* * Finds appropriate template file and return path * This make option to change template in themes * * @return string / function get_template() { if ( is_child_theme() ) { // Use child theme specified template for comments page if ( file_exists( get_stylesheet_directory() . '/better-facebook-comments.php' ) ) { return get_stylesheet_directory() . '/better-facebook-comments.php'; } } // Use theme specified template for comments page if ( file_exists( get_template_directory() . '/better-facebook-comments.php' ) ) { return get_template_directory() . '/better-facebook-comments.php'; } return $this->dir_path( 'templates/better-facebook-comments.php' ); } /* * Changes WP comments template with Facebook template * * @param string $template absolute path to comment template file * * @return string / function custom_comments_template( $template ) { // Automatic AMP if ( function_exists( 'is_amp_endpoint' ) && is_amp_endpoint() ) { return $template; } // Better AMP if ( function_exists( 'is_better_amp' ) && is_better_amp() ) { return $template; } if ( ! apply_filters( 'better-facebook-comments/override-template', TRUE ) ) { return $template; } $is_ajaxified = basename( $template ) === 'comments-ajaxified.php'; $this->comments_type = $is_ajaxified ? 'ajaxified' : 'plain'; if ( $is_ajaxified ) { return $template; } return $this->get_template(); } /* * Ajax callback: clears comments count. * * @return string\|void / function clear_comments_cache() { if ( empty( $_GET['post_id'] ) ) { wp_send_json( array( 'status' => 'error', 'message' => __( 'Post ID was not received.', 'better-studio' ), ) ); } delete_transient( 'bfc_post_' . $_GET['post_id'] ); $result = array( 'status' => 'success', 'post' => $_GET['post_id'], 'fb_count' => $this->get_comment_count( $_GET['post_id'] ), ); add_filter( 'better-facebook-comments/disable-aggregate', '__return_false' ); add_filter( 'better-facebook-comments/allow-multiple', '__return_true' ); $result['count'] = get_comments_number( $_GET['post_id'] ); wp_send_json( $result ); } /* * Retrieves post Facebook comments count. * * @return int\|mixed / function get_comment_count( $post_id = 0 ) { if ( $post_id == 0 ) { $post_id = get_the_ID(); } $id = 'bfc_post_' . $post_id; if ( ( $count = get_transient( $id ) ) === FALSE ) { $request = wp_remote_get( 'https://graph.facebook.com/v2.1/?fields=share{comment_count}&id=' . esc_url( get_permalink( $post_id ) ) ); if ( ! is_wp_error( $request ) ) { $request = json_decode( wp_remote_retrieve_body( $request ), TRUE ); if ( isset( $request['error'] ) ) { $count = 0; set_transient( $id, $count, MINUTE_IN_SECONDS 10 ); } elseif ( ! empty( $request['share']['comment_count'] ) ) { $count = $request['share']['comment_count']; set_transient( $id, $count, HOUR_IN_SECONDS * 2 ); add_post_meta( $post_id, '_facebook_comments_count', $count, TRUE ); } } } if ( $count === FALSE ) { if ( get_post_meta( $post_id, '_facebook_comments_count', TRUE ) !== FALSE ) { $count = get_post_meta( $post_id, '_facebook_comments_count', TRUE ); } else { $count = 0; } } if ( empty( $count ) ) { $count = 0; } return $count; } /** * Filters comment count and multiplies comments count in when multiple comments is active * * @param $count * @param $post_id * * @return int\|mixed / function filter_get_comments_number( $count, $post_id ) { if ( apply_filters( 'better-facebook-comments/disable-aggregate', FALSE ) ) { return $count; } $fb_count = $this->get_comment_count( $post_id ); if ( apply_filters( 'better-facebook-comments/allow-multiple', FALSE ) ) { $fb_count += $count; } return $fb_count; } /* * Callback: Used to clear themes meta text to better style in front-end * * Filter: better-studio/themes/meta/comments/text * * @param $text * * @return string / function better_studio_themes_comment_text( $text ) { return is_int( $text ) ? $text : $this->get_comment_count(); } /* * Callback: Adds Facebook App data to header * * Action: wp_head */ function wp_head() { echo '<meta property="fb:app_id" content="' . $this->get_option( 'app_id' ) . '">'; } }

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