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<?php /** * Block Editor - Block Notes plugin feature. * * @package automattic/jetpack */ namespace Automattic\Jetpack\Extensions\BlockNotes; use Automattic\Jetpack\Connection\Manager as Connection_Manager; use Automattic\Jetpack\My_Jetpack\Products\Jetpack_Ai; use Automattic\Jetpack\Status; use Automattic\Jetpack\Status\Host; if ( ! defined( 'ABSPATH' ) ) { exit( 0 ); } const FEATURE_NAME = 'block-notes'; const ASSET_BASE_PATH = 'widgets.wp.com/agents-manager/'; const ASSET_JS_URL = 'https://' . ASSET_BASE_PATH . 'block-notes.min.js'; const ASSET_JSON_URL = 'https://' . ASSET_BASE_PATH . 'block-notes.asset.json'; const ASSET_JSON_PATH = ASSET_BASE_PATH . 'block-notes.asset.json'; const ASSET_TRANSIENT = 'jetpack_block_notes_asset'; const HEADLESS_AGENT_PROVIDER = 'block-notes/headless-agent-provider'; /** * Check if Block Notes is enabled. * * Enabled when the Big Sky plugin is active, or when the site has * a paid Jetpack AI plan and AI features are not disabled. * * @return bool */ function is_block_notes_enabled() { /** * Temporarily disabled while we investigate expensive API calls * triggered by has_paid_ai_plan() on every Gutenberg page load for * self-hosted sites. Filter allows tests and development to re-enable. * * @since 15.8 * * @param bool $enabled Whether Block Notes is force-enabled. Default false. */ if ( ! apply_filters( 'jetpack_block_notes_enabled', false ) ) { return false; } if ( is_big_sky_enabled() ) { return true; } if ( ! has_jetpack_ai_features() ) { return false; } if ( ! has_paid_ai_plan() ) { return false; } return true; } /** * Check if the site has a paid Jetpack AI plan. * * On WordPress.com, uses the lightweight wpcom_site_has_feature() lookup. * On self-hosted and Atomic sites, uses the My Jetpack product class. * * @return bool */ function has_paid_ai_plan() { $has_paid_plan = false; if ( defined( 'IS_WPCOM' ) && IS_WPCOM && function_exists( 'wpcom_site_has_feature' ) ) { $has_paid_plan = wpcom_site_has_feature( 'ai-assistant', get_current_blog_id() ); } elseif ( class_exists( Jetpack_Ai::class ) ) { $has_paid_plan = Jetpack_Ai::has_paid_plan_for_product(); } /** * Filter whether the site has a paid AI plan. * * @since 15.7 * * @param bool $has_paid_plan Whether the site has a paid AI plan. */ return apply_filters( 'jetpack_block_notes_has_paid_ai_plan', $has_paid_plan ); } /** * Check if the Big Sky plugin is active and enabled. * * Defaults to enabled ('1') when the Big_Sky class exists but the option * has never been set — plugin presence implies the feature should be on. * * @return bool */ function is_big_sky_enabled() { return class_exists( 'Big_Sky' ) && get_option( 'big_sky_enable', '1' ); } /** * Check whether AI features are available. * * - wpcom simple: always returns true. The jetpack_ai_enabled filter * does not apply here; the paid plan check in has_paid_ai_plan() * gates access instead. * - Otherwise requires a connected owner, not in offline mode, and * AI not disabled via the jetpack_ai_enabled filter. * * @return bool */ function has_jetpack_ai_features() { $host = new Host(); if ( $host->is_wpcom_simple() ) { return true; } return ( new Connection_Manager( 'jetpack' ) )->has_connected_owner() && ! ( new Status() )->is_offline_mode() && apply_filters( 'jetpack_ai_enabled', true ); } /** * Check if the current screen is the post editor for a 'post' post type. * * Block Notes is only for the post editor (not site editor, pages, or other contexts). * * @return bool */ function is_post_editor() { if ( ! function_exists( 'get_current_screen' ) ) { return false; } $screen = get_current_screen(); return $screen && $screen->is_block_editor() && 'post' === $screen->base && 'post' === $screen->post_type; } /** * Determine if Block Notes should load on the current screen. * * @return bool */ function should_load_on_current_screen() { return is_post_editor(); } /** * Register the Block Notes plugin. * * Registers when Block Notes is enabled. Screen-level gating happens at * enqueue time since get_current_screen() is not available here. * * @return void */ function register_plugin() { if ( ! is_block_notes_enabled() ) { return; } \Jetpack_Gutenberg::set_extension_available( FEATURE_NAME ); } add_action( 'jetpack_register_gutenberg_extensions', __NAMESPACE__ . '\register_plugin' ); /** * Fetch and cache the remote asset manifest. * * On WordPress.com, the asset file may be accessible on the local filesystem * (under ABSPATH). This avoids an HTTP round-trip and works on sandboxes where * outbound requests to widgets.wp.com may be blocked. * * @return array|false The decoded asset data, or false on failure. */ function get_asset_data() { $cached = get_transient( ASSET_TRANSIENT ); if ( false !== $cached ) { return $cached; } $data = get_asset_data_from_file(); if ( false === $data ) { $data = get_asset_data_from_remote(); } if ( false === $data ) { return false; } if ( ! ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ) { set_transient( ASSET_TRANSIENT, $data, HOUR_IN_SECONDS ); } return $data; } /** * Try to read the asset manifest from the local filesystem. * * On WordPress.com, widgets.wp.com assets are available at ABSPATH. * * @return array|false The decoded asset data, or false if not available locally. */ function get_asset_data_from_file() { $local_path = ABSPATH . ASSET_JSON_PATH; if ( ! file_exists( $local_path ) ) { return false; } // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Reading a local file, not a remote URL. $contents = file_get_contents( $local_path ); if ( false === $contents ) { return false; } $data = json_decode( $contents, true ); if ( json_last_error() !== JSON_ERROR_NONE || ! is_array( $data ) ) { return false; } return $data; } /** * Fetch the asset manifest via HTTP. * * Used as a fallback when the file is not available locally (e.g. self-hosted sites). * * @return array|false The decoded asset data, or false on failure. */ function get_asset_data_from_remote() { $response = wp_safe_remote_get( ASSET_JSON_URL ); if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) { return false; } $content_type = wp_remote_retrieve_header( $response, 'content-type' ); if ( is_string( $content_type ) && false === stripos( $content_type, 'json' ) ) { return false; } $body = wp_remote_retrieve_body( $response ); $data = json_decode( $body, true ); if ( json_last_error() !== JSON_ERROR_NONE || ! is_array( $data ) ) { return false; } return $data; } /** * Enqueue Block Notes script asset. * * @return void */ function do_enqueue_assets() { if ( ! is_block_notes_enabled() ) { return; } $asset_data = get_asset_data(); if ( ! $asset_data ) { return; } $version = $asset_data['version'] ?? false; $dependencies = $asset_data['dependencies'] ?? array(); wp_enqueue_script( FEATURE_NAME, ASSET_JS_URL, $dependencies, $version, true ); wp_add_inline_script( FEATURE_NAME, 'if ( typeof window.blockNotesData === "undefined" ) { window.blockNotesData = ' . wp_json_encode( array( 'enabled' => true ), JSON_HEX_TAG | JSON_HEX_AMP ) . '; }', 'before' ); } /** * Enqueue Block Notes assets in the post editor. * * Only loads when should_load_on_current_screen() returns true. * * @return void */ function enqueue_block_notes() { if ( ! should_load_on_current_screen() ) { return; } do_enqueue_assets(); } add_action( 'enqueue_block_editor_assets', __NAMESPACE__ . '\enqueue_block_notes' ); /** * Enable the agents manager unified experience on self-hosted sites * when Block Notes is enabled. * * This ensures the agents manager loads and can host the headless agent * even when the unified chat experience is not otherwise enabled. * * @param bool $use_unified_experience Current value of the filter. * @return bool */ function enable_agents_manager_for_block_notes( $use_unified_experience ) { if ( $use_unified_experience ) { return true; } return is_block_notes_enabled(); } add_filter( 'agents_manager_use_unified_experience', __NAMESPACE__ . '\enable_agents_manager_for_block_notes' ); /** * Register the Block Notes headless agent provider with the agents manager. * * When Block Notes is enabled, adds the Block Notes headless * agent provider module so the agents manager can load it. * * @param array $providers Existing agent provider module IDs. * @return array Modified array of provider module IDs. */ function register_headless_agent_provider( $providers ) { if ( ! is_block_notes_enabled() ) { return $providers; } $providers[] = HEADLESS_AGENT_PROVIDER; return $providers; } add_filter( 'agents_manager_agent_providers', __NAMESPACE__ . '\register_headless_agent_provider' ); /** * Register Block Notes meta fields and filters. * * Registers the comment meta field used to track AI processing, and hooks * the avatar filter for AI-authored notes. * * @return void */ function register_meta_fields() { if ( ! is_block_notes_enabled() ) { return; } register_meta( 'comment', 'bigsky_ai_processed_date', array( 'type' => 'string', 'description' => 'ISO date when this note was processed by AI (empty if not processed)', 'single' => true, 'show_in_rest' => true, 'auth_callback' => __NAMESPACE__ . '\meta_auth_callback', 'sanitize_callback' => 'sanitize_text_field', ) ); add_filter( 'get_avatar_data', __NAMESPACE__ . '\customize_ai_avatar', 10, 2 ); } add_action( 'init', __NAMESPACE__ . '\register_meta_fields' ); /** * Authorization callback for the bigsky_ai_processed_date comment meta. * * @return bool */ function meta_auth_callback() { return current_user_can( 'edit_posts' ); } /** * Customize the avatar for AI-authored block notes. * * @param array $args Avatar data arguments. * @param mixed $id_or_email The Gravatar to retrieve. * @return array Modified avatar arguments. */ function customize_ai_avatar( $args, $id_or_email ) { if ( is_object( $id_or_email ) && isset( $id_or_email->comment_author ) ) { if ( 'AI [experimental]' === $id_or_email->comment_author ) { $args['url'] = plugins_url( 'images/big-sky.svg', JETPACK__PLUGIN_FILE ); } } return $args; }
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