334 lines
11 KiB
PHP
334 lines
11 KiB
PHP
<?php
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/**
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* Blocks file.
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*
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* @package Activitypub
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*/
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namespace Activitypub;
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use Activitypub\Collection\Followers;
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use Activitypub\Collection\Users as User_Collection;
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/**
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* Block class.
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*/
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class Blocks {
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/**
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* Initialize the class, registering WordPress hooks.
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*/
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public static function init() {
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// This is already being called on the init hook, so just add it.
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self::register_blocks();
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\add_action( 'wp_enqueue_scripts', array( self::class, 'add_data' ) );
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\add_action( 'enqueue_block_editor_assets', array( self::class, 'add_data' ) );
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\add_action( 'load-post-new.php', array( self::class, 'handle_in_reply_to_get_param' ) );
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// Add editor plugin.
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\add_action( 'enqueue_block_editor_assets', array( self::class, 'enqueue_editor_assets' ) );
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\add_action( 'init', array( self::class, 'register_postmeta' ), 11 );
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}
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/**
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* Register post meta for content warnings.
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*/
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public static function register_postmeta() {
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$ap_post_types = \get_post_types_by_support( 'activitypub' );
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foreach ( $ap_post_types as $post_type ) {
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\register_post_meta(
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$post_type,
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'activitypub_content_warning',
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array(
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'show_in_rest' => true,
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'single' => true,
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'type' => 'string',
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'sanitize_callback' => 'sanitize_text_field',
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)
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);
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}
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}
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/**
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* Enqueue the block editor assets.
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*/
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public static function enqueue_editor_assets() {
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// Check for our supported post types.
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$current_screen = \get_current_screen();
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$ap_post_types = \get_post_types_by_support( 'activitypub' );
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if ( ! $current_screen || ! in_array( $current_screen->post_type, $ap_post_types, true ) ) {
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return;
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}
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$asset_data = include ACTIVITYPUB_PLUGIN_DIR . 'build/editor-plugin/plugin.asset.php';
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$plugin_url = plugins_url( 'build/editor-plugin/plugin.js', ACTIVITYPUB_PLUGIN_FILE );
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wp_enqueue_script( 'activitypub-block-editor', $plugin_url, $asset_data['dependencies'], $asset_data['version'], true );
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}
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/**
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* Enqueue the reply handle script if the in_reply_to GET param is set.
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*/
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public static function handle_in_reply_to_get_param() {
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// Only load the script if the in_reply_to GET param is set, action happens there, not here.
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// phpcs:ignore WordPress.Security.NonceVerification.Recommended
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if ( ! isset( $_GET['in_reply_to'] ) ) {
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return;
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}
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$asset_data = include ACTIVITYPUB_PLUGIN_DIR . 'build/reply-intent/plugin.asset.php';
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$plugin_url = plugins_url( 'build/reply-intent/plugin.js', ACTIVITYPUB_PLUGIN_FILE );
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wp_enqueue_script( 'activitypub-reply-intent', $plugin_url, $asset_data['dependencies'], $asset_data['version'], true );
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}
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/**
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* Add data to the block editor.
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*/
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public static function add_data() {
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$context = is_admin() ? 'editor' : 'view';
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$followers_handle = 'activitypub-followers-' . $context . '-script';
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$follow_me_handle = 'activitypub-follow-me-' . $context . '-script';
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$data = array(
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'namespace' => ACTIVITYPUB_REST_NAMESPACE,
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'enabled' => array(
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'site' => ! is_user_type_disabled( 'blog' ),
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'users' => ! is_user_type_disabled( 'user' ),
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),
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);
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$js = sprintf( 'var _activityPubOptions = %s;', wp_json_encode( $data ) );
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\wp_add_inline_script( $followers_handle, $js, 'before' );
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\wp_add_inline_script( $follow_me_handle, $js, 'before' );
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}
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/**
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* Register the blocks.
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*/
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public static function register_blocks() {
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\register_block_type_from_metadata(
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ACTIVITYPUB_PLUGIN_DIR . '/build/followers',
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array(
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'render_callback' => array( self::class, 'render_follower_block' ),
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)
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);
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\register_block_type_from_metadata(
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ACTIVITYPUB_PLUGIN_DIR . '/build/follow-me',
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array(
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'render_callback' => array( self::class, 'render_follow_me_block' ),
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)
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);
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\register_block_type_from_metadata(
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ACTIVITYPUB_PLUGIN_DIR . '/build/reply',
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array(
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'render_callback' => array( self::class, 'render_reply_block' ),
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)
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);
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}
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/**
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* Get the user ID from a user string.
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*
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* @param string $user_string The user string. Can be a user ID, 'site', or 'inherit'.
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* @return int|null The user ID, or null if the 'inherit' string is not supported in this context.
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*/
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private static function get_user_id( $user_string ) {
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if ( is_numeric( $user_string ) ) {
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return absint( $user_string );
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}
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// If the user string is 'site', return the Blog User ID.
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if ( 'site' === $user_string ) {
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return User_Collection::BLOG_USER_ID;
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}
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// The only other value should be 'inherit', which means to use the query context to determine the User.
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if ( 'inherit' !== $user_string ) {
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return null;
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}
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// For a homepage/front page, if the Blog User is active, use it.
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if ( ( is_front_page() || is_home() ) && ! is_user_type_disabled( 'blog' ) ) {
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return User_Collection::BLOG_USER_ID;
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}
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// If we're in a loop, use the post author.
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$author_id = get_the_author_meta( 'ID' );
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if ( $author_id ) {
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return $author_id;
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}
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// For other pages, the queried object will clue us in.
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$queried_object = get_queried_object();
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if ( ! $queried_object ) {
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return null;
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}
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// If we're on a user archive page, use that user's ID.
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if ( is_a( $queried_object, 'WP_User' ) ) {
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return $queried_object->ID;
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}
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// For a single post, use the post author's ID.
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if ( is_a( $queried_object, 'WP_Post' ) ) {
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return get_the_author_meta( 'ID' );
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}
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// We won't properly account for some conditions, like tag archives.
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return null;
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}
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/**
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* Filter an array by a list of keys.
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*
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* @param array $data The array to filter.
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* @param array $keys The keys to keep.
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* @return array The filtered array.
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*/
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protected static function filter_array_by_keys( $data, $keys ) {
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return array_intersect_key( $data, array_flip( $keys ) );
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}
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/**
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* Render the follow me block.
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*
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* @param array $attrs The block attributes.
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* @return string The HTML to render.
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*/
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public static function render_follow_me_block( $attrs ) {
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$user_id = self::get_user_id( $attrs['selectedUser'] );
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$user = User_Collection::get_by_id( $user_id );
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if ( is_wp_error( $user ) ) {
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if ( 'inherit' === $attrs['selectedUser'] ) {
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// If the user is 'inherit' and we couldn't determine the user, don't render anything.
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return '<!-- Follow Me block: `inherit` mode does not display on this type of page -->';
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} else {
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// If the user is a specific ID and we couldn't find it, render an error message.
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return '<!-- Follow Me block: user not found -->';
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}
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}
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$attrs['profileData'] = self::filter_array_by_keys(
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$user->to_array(),
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array( 'icon', 'name', 'webfinger' )
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);
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$wrapper_attributes = get_block_wrapper_attributes(
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array(
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'aria-label' => __( 'Follow me on the Fediverse', 'activitypub' ),
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'class' => 'activitypub-follow-me-block-wrapper',
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'data-attrs' => wp_json_encode( $attrs ),
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)
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);
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// todo: render more than an empty div?
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return '<div ' . $wrapper_attributes . '></div>';
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}
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/**
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* Render the follower block.
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*
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* @param array $attrs The block attributes.
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*
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* @return string The HTML to render.
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*/
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public static function render_follower_block( $attrs ) {
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$followee_user_id = self::get_user_id( $attrs['selectedUser'] );
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if ( is_null( $followee_user_id ) ) {
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return '<!-- Followers block: `inherit` mode does not display on this type of page -->';
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}
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$user = User_Collection::get_by_id( $followee_user_id );
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if ( is_wp_error( $user ) ) {
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return '<!-- Followers block: `' . $followee_user_id . '` not an active ActivityPub user -->';
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}
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$per_page = absint( $attrs['per_page'] );
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$follower_data = Followers::get_followers_with_count( $followee_user_id, $per_page );
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$attrs['followerData']['total'] = $follower_data['total'];
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$attrs['followerData']['followers'] = array_map(
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function ( $follower ) {
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return self::filter_array_by_keys(
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$follower->to_array(),
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array( 'icon', 'name', 'preferredUsername', 'url' )
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);
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},
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$follower_data['followers']
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);
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$wrapper_attributes = get_block_wrapper_attributes(
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array(
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'aria-label' => __( 'Fediverse Followers', 'activitypub' ),
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'class' => 'activitypub-follower-block',
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'data-attrs' => wp_json_encode( $attrs ),
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)
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);
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$html = '<div ' . $wrapper_attributes . '>';
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if ( $attrs['title'] ) {
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$html .= '<h3>' . esc_html( $attrs['title'] ) . '</h3>';
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}
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$html .= '<ul>';
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foreach ( $follower_data['followers'] as $follower ) {
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$html .= '<li>' . self::render_follower( $follower ) . '</li>';
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}
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// We are only pagination on the JS side. Could be revisited but we gotta ship!
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$html .= '</ul></div>';
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return $html;
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}
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/**
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* Render the reply block.
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*
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* @param array $attrs The block attributes.
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*
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* @return string The HTML to render.
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*/
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public static function render_reply_block( $attrs ) {
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/**
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* Filter the reply block.
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*
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* @param string $html The HTML to render.
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* @param array $attrs The block attributes.
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*/
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return apply_filters(
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'activitypub_reply_block',
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sprintf(
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'<p><a title="%2$s" aria-label="%2$s" href="%1$s" class="u-in-reply-to" target="_blank">%3$s</a></p>',
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esc_url( $attrs['url'] ),
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esc_attr__( 'This post is a response to the referenced content.', 'activitypub' ),
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// translators: %s is the URL of the post being replied to.
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sprintf( __( '↬%s', 'activitypub' ), \str_replace( array( 'https://', 'http://' ), '', $attrs['url'] ) )
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),
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$attrs
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);
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}
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/**
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* Render a follower.
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*
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* @param \Activitypub\Model\Follower $follower The follower to render.
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*
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* @return string The HTML to render.
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*/
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public static function render_follower( $follower ) {
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$external_svg = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" class="components-external-link__icon css-rvs7bx esh4a730" aria-hidden="true" focusable="false"><path d="M18.2 17c0 .7-.6 1.2-1.2 1.2H7c-.7 0-1.2-.6-1.2-1.2V7c0-.7.6-1.2 1.2-1.2h3.2V4.2H7C5.5 4.2 4.2 5.5 4.2 7v10c0 1.5 1.2 2.8 2.8 2.8h10c1.5 0 2.8-1.2 2.8-2.8v-3.6h-1.5V17zM14.9 3v1.5h3.7l-6.4 6.4 1.1 1.1 6.4-6.4v3.7h1.5V3h-6.3z"></path></svg>';
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$template =
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'<a href="%s" title="%s" class="components-external-link activitypub-link" target="_blank" rel="external noreferrer noopener">
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<img width="40" height="40" src="%s" class="avatar activitypub-avatar" />
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<span class="activitypub-actor">
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<strong class="activitypub-name">%s</strong>
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<span class="sep">/</span>
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<span class="activitypub-handle">@%s</span>
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</span>
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%s
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</a>';
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$data = $follower->to_array();
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return sprintf(
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$template,
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esc_url( object_to_uri( $data['url'] ) ),
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esc_attr( $data['name'] ),
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esc_attr( $data['icon']['url'] ),
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esc_html( $data['name'] ),
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esc_html( $data['preferredUsername'] ),
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$external_svg
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);
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}
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}
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