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<?php |
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/** |
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* OpenStation — AI Copilot content search via the provider tool use. |
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* |
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* Agentic search loop: the user describes something in natural language and |
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* the agent calls focused tools, choosing the right one based on query |
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* semantics. Built-in tools: four content-search tools — search_posts, |
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* search_pages, search_comments, search_comments_by_post — plus |
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* list_admin_pages (admin navigation catalog), search_wporg_plugins |
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* (WordPress.org plugin directory), and get_php_error_log (error-log |
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* tail). Each content-search tool runs WordPress's native search |
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* (WP_Query `s=` / get_comments `search=`) for the keywords the model |
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* distils from the request, then returns up to 10 matching entities with |
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* their real title + content excerpt for the model to compare to the |
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* user's description. No AI pre-analysis is required — every published |
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* post/page/comment is findable. The built-in tools are WordPress Abilities |
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* (see abilities.php); client command tools are advertised alongside them and |
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* dispatched by the same loop. |
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* |
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* Focused tools instead of one routing parameter: |
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* - "I remember a comment where someone said congratulations…" → agent |
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* calls search_comments without needing a routing parameter. |
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* - "I wrote a post about paella in Canarias" → agent calls search_posts. |
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* - "Our About page mentions…" → agent calls search_pages. |
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* - Ambiguous queries → agent tries in priority order (posts → pages → |
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* comments) following the system-prompt guidance. |
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* |
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* Budget: max OPENSTATION_AI_SEARCH_MAX_ITERATIONS (10) tool-call rounds per |
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* request × OPENSTATION_AI_SEARCH_BATCH_SIZE (10) items = up to 100 entities. |
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* When the budget is exhausted the response includes a `continue` object |
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* the client uses to resume from the exact offset that was last searched. |
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* |
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* REST endpoint: POST /desktop-mode/v1/ai/search |
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* |
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* @package OpenStation |
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*/ |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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/** Maximum agentic tool-call iterations per search request. */ |
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const OPENSTATION_AI_SEARCH_MAX_ITERATIONS = 10; |
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|
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/** Entities fetched per tool-call round. */ |
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const OPENSTATION_AI_SEARCH_BATCH_SIZE = 10; |
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|
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/** |
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* Returns the catalog of common WordPress admin destinations. |
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* |
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* Used by the `list_admin_pages` tool. Each entry has a human title, the |
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* wp-admin URL (rendered through admin_url() so it respects the site's |
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* real admin path), a short description, and a Dashicons icon class the |
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* UI can use when opening the URL in a legacy iframe window. |
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* |
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* Filterable via `openstation_ai_admin_page_catalog` so third-party |
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* plugins can contribute their own admin destinations (e.g. a plugin |
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* adding a top-level menu can surface its settings page here). |
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* |
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* @return array[] |
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*/ |
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function openstation_ai_get_admin_page_catalog() { |
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$catalog = array( |
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array( |
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'title' => 'Dashboard', |
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'url' => admin_url( 'index.php' ), |
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'icon' => 'dashicons-dashboard', |
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'description' => 'The main admin dashboard — activity, drafts, site overview.', |
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), |
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array( |
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'title' => 'All Posts', |
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'url' => admin_url( 'edit.php' ), |
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'icon' => 'dashicons-admin-post', |
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'description' => 'List, edit, bulk-manage blog posts.', |
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), |
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array( |
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'title' => 'Add New Post', |
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'url' => admin_url( 'post-new.php' ), |
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'icon' => 'dashicons-plus', |
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'description' => 'Create a new blog post.', |
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), |
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array( |
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'title' => 'Categories', |
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'url' => admin_url( 'edit-tags.php?taxonomy=category' ), |
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'icon' => 'dashicons-category', |
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'description' => 'Manage post categories — add, rename, merge.', |
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), |
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array( |
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'title' => 'Tags', |
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'url' => admin_url( 'edit-tags.php?taxonomy=post_tag' ), |
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'icon' => 'dashicons-tag', |
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'description' => 'Manage post tags.', |
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), |
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array( |
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'title' => 'All Pages', |
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'url' => admin_url( 'edit.php?post_type=page' ), |
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'icon' => 'dashicons-admin-page', |
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'description' => 'List and edit static pages (About, Contact, etc.).', |
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), |
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array( |
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'title' => 'Add New Page', |
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'url' => admin_url( 'post-new.php?post_type=page' ), |
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'icon' => 'dashicons-plus', |
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'description' => 'Create a new page.', |
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), |
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array( |
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'title' => 'Media Library', |
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'url' => admin_url( 'upload.php' ), |
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'icon' => 'dashicons-admin-media', |
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'description' => 'Browse, upload, and manage images, files, videos.', |
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), |
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array( |
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'title' => 'Comments', |
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'url' => admin_url( 'edit-comments.php' ), |
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'icon' => 'dashicons-admin-comments', |
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'description' => 'Moderate and reply to comments on posts and pages.', |
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), |
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array( |
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'title' => 'Themes', |
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'url' => admin_url( 'themes.php' ), |
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'icon' => 'dashicons-admin-appearance', |
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'description' => 'Change, install, or customize the active theme.', |
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), |
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array( |
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'title' => 'Customize', |
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'url' => admin_url( 'customize.php' ), |
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'icon' => 'dashicons-admin-customizer', |
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'description' => 'Live-preview theme customisation — colors, fonts, layout.', |
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), |
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array( |
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'title' => 'Widgets', |
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'url' => admin_url( 'widgets.php' ), |
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'icon' => 'dashicons-screenoptions', |
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'description' => 'Manage sidebar and footer widgets.', |
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), |
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array( |
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'title' => 'Menus', |
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'url' => admin_url( 'nav-menus.php' ), |
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'icon' => 'dashicons-menu', |
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'description' => 'Create and edit navigation menus.', |
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), |
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array( |
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'title' => 'Plugins', |
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'url' => admin_url( 'plugins.php' ), |
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'icon' => 'dashicons-admin-plugins', |
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'description' => 'Activate, deactivate, update or delete plugins.', |
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), |
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array( |
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'title' => 'Add New Plugin', |
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'url' => admin_url( 'plugin-install.php' ), |
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'icon' => 'dashicons-plus', |
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'description' => 'Search and install new plugins from the directory.', |
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), |
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array( |
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'title' => 'Users', |
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'url' => admin_url( 'users.php' ), |
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'icon' => 'dashicons-admin-users', |
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'description' => 'Manage user accounts and roles.', |
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), |
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array( |
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'title' => 'Add New User', |
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'url' => admin_url( 'user-new.php' ), |
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'icon' => 'dashicons-plus', |
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'description' => 'Create a new user account.', |
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), |
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array( |
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'title' => 'Your Profile', |
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'url' => admin_url( 'profile.php' ), |
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'icon' => 'dashicons-id', |
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'description' => 'Edit your own profile, password, admin colour scheme.', |
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), |
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array( |
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'title' => 'General Settings', |
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'url' => admin_url( 'options-general.php' ), |
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'icon' => 'dashicons-admin-settings', |
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'description' => 'Site title, tagline, URL, timezone, language.', |
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), |
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array( |
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'title' => 'Writing Settings', |
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'url' => admin_url( 'options-writing.php' ), |
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'icon' => 'dashicons-edit', |
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'description' => 'Default post category, post format, remote publishing.', |
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), |
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array( |
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'title' => 'Reading Settings', |
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'url' => admin_url( 'options-reading.php' ), |
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'icon' => 'dashicons-book', |
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'description' => 'Homepage, blog posts per page, search-engine visibility.', |
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), |
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array( |
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'title' => 'Discussion Settings', |
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'url' => admin_url( 'options-discussion.php' ), |
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'icon' => 'dashicons-format-chat', |
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'description' => 'Comment moderation, avatars, email notifications.', |
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), |
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array( |
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'title' => 'Media Settings', |
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'url' => admin_url( 'options-media.php' ), |
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'icon' => 'dashicons-format-image', |
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'description' => 'Image size settings for thumbnail / medium / large.', |
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), |
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array( |
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'title' => 'Permalinks', |
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'url' => admin_url( 'options-permalink.php' ), |
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'icon' => 'dashicons-admin-links', |
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'description' => 'URL structure for posts, pages, categories, tags.', |
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), |
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array( |
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'title' => 'Privacy', |
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'url' => admin_url( 'options-privacy.php' ), |
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'icon' => 'dashicons-privacy', |
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'description' => 'Privacy policy page selection and preview.', |
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), |
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array( |
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'title' => 'Tools', |
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'url' => admin_url( 'tools.php' ), |
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'icon' => 'dashicons-admin-tools', |
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'description' => 'Built-in site tools.', |
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), |
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array( |
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'title' => 'Import', |
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'url' => admin_url( 'import.php' ), |
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'icon' => 'dashicons-download', |
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'description' => 'Import content from other platforms (WP, Tumblr, RSS, etc.).', |
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), |
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array( |
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'title' => 'Export', |
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'url' => admin_url( 'export.php' ), |
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'icon' => 'dashicons-upload', |
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'description' => 'Export all site content as XML.', |
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), |
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array( |
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'title' => 'Site Health', |
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'url' => admin_url( 'site-health.php' ), |
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'icon' => 'dashicons-heart', |
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'description' => 'Performance and security recommendations for the site.', |
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), |
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array( |
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'title' => 'Updates', |
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'url' => admin_url( 'update-core.php' ), |
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'icon' => 'dashicons-update', |
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'description' => 'WordPress, theme, and plugin updates.', |
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), |
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); |
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|
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/** |
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* Filters the wp-admin page catalog surfaced by the AI assistant. |
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* |
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* @param array[] $catalog Array of entries, each with title/url/icon/description. |
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*/ |
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return (array) apply_filters( 'openstation_ai_admin_page_catalog', $catalog ); |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Final-answer JSON Schema |
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// --------------------------------------------------------------------------- |
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|
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/** |
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* JSON Schema for the agent's final structured answer. |
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* |
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* @return array |
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*/ |
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function openstation_ai_search_answer_schema() { |
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return array( |
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'type' => 'object', |
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'additionalProperties' => false, |
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'required' => array( 'answer_type', 'message', 'entity_id', 'entity_type', 'admin_links' ), |
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'properties' => array( |
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'answer_type' => array( |
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'type' => 'string', |
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'enum' => array( 'entity', 'navigation', 'chat' ), |
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'description' => 'Classification of the answer: "entity" when you identified a specific post/page/comment the user was asking about. "navigation" when the user asked where to find something in wp-admin and you are returning admin_links. "chat" for conversational responses that don\'t involve finding content or navigation (e.g. greetings, clarifications, "I couldn\'t find anything").', |
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), |
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'message' => array( |
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'type' => 'string', |
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'description' => 'A friendly, conversational response to show the user. Write in first person like a helpful assistant (e.g. "I found your Málaga post — this one", "Here\'s where you manage categories"). NOT a search-engine sentence ("Match found").', |
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), |
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'entity_id' => array( |
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'anyOf' => array( |
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array( 'type' => 'integer' ), |
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array( 'type' => 'null' ), |
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), |
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'description' => 'The WordPress ID of the matching entity. Required when answer_type is "entity"; set to null otherwise.', |
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), |
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'entity_type' => array( |
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'anyOf' => array( |
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array( |
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'type' => 'string', |
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'enum' => array( 'post', 'page', 'comment' ), |
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), |
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array( 'type' => 'null' ), |
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), |
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'description' => 'Type of the matching entity. Required when answer_type is "entity"; set to null otherwise.', |
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), |
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'admin_links' => array( |
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'anyOf' => array( |
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array( |
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'type' => 'array', |
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'items' => array( |
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'type' => 'object', |
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'additionalProperties' => false, |
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'required' => array( 'title', 'url', 'description', 'icon' ), |
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'properties' => array( |
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'title' => array( 'type' => 'string' ), |
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'url' => array( 'type' => 'string' ), |
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'description' => array( 'type' => 'string' ), |
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'icon' => array( 'type' => 'string' ), |
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), |
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), |
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), |
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array( 'type' => 'null' ), |
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), |
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'description' => 'List of 1-3 wp-admin destinations (copy verbatim from the list_admin_pages tool result). Required when answer_type is "navigation"; set to null otherwise.', |
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), |
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), |
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); |
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} |
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|
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// --------------------------------------------------------------------------- |
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// DB queries — tool execution |
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// --------------------------------------------------------------------------- |
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|
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/** |
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* Routes a tool call to the correct DB query by function name. |
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* |
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* The content-search tools (`search_posts`, `search_pages`, |
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* `search_comments`, `search_comments_by_post`) take a keyword `query` |
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* matched with WordPress's native search; `search_comments_by_post` |
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* needs an additional `post_id`. The caller passes the full decoded |
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* arguments array so this function can extract whatever it needs. |
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* |
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* @param string $tool_name Tool function name. |
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* @param array $args Decoded arguments from the model's tool call. |
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* @return array Tool result payload. |
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*/ |
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function openstation_ai_search_dispatch_tool( $tool_name, array $args ) { |
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$offset = max( 0, (int) ( $args['offset'] ?? 0 ) ); |
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$query = isset( $args['query'] ) ? sanitize_text_field( (string) $args['query'] ) : ''; |
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|
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switch ( $tool_name ) { |
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case 'search_posts': |
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return openstation_ai_search_fetch_posts( 'post', $query, $offset ); |
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case 'search_pages': |
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return openstation_ai_search_fetch_posts( 'page', $query, $offset ); |
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case 'search_comments': |
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return openstation_ai_search_fetch_comments( $query, $offset ); |
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case 'search_comments_by_post': |
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$post_id = max( 0, (int) ( $args['post_id'] ?? 0 ) ); |
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return openstation_ai_search_fetch_comments_by_post( $post_id, $query, $offset ); |
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case 'list_admin_pages': |
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return array( |
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'tool' => 'list_admin_pages', |
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'pages' => openstation_ai_get_admin_page_catalog(), |
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); |
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case 'search_wporg_plugins': |
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$q = isset( $args['query'] ) ? sanitize_text_field( (string) $args['query'] ) : ''; |
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return openstation_ai_fetch_wporg_plugins( $q ); |
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case 'get_php_error_log': |
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if ( ! current_user_can( 'manage_options' ) ) { |
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return array( |
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'tool' => 'get_php_error_log', |
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'log_available' => false, |
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'error' => 'Only administrators can access the PHP error log.', |
| 362 |
'entries' => array(), |
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); |
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} |
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$lines = isset( $args['lines'] ) ? max( 1, min( 500, (int) $args['lines'] ) ) : 50; |
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return openstation_ai_fetch_error_log( $lines ); |
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} |
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|
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return array( |
| 370 |
'tool' => $tool_name, |
| 371 |
'offset' => $offset, |
| 372 |
'items' => array(), |
| 373 |
'count' => 0, |
| 374 |
'total' => 0, |
| 375 |
'has_more' => false, |
| 376 |
'error' => "Unknown tool '{$tool_name}'.", |
| 377 |
); |
| 378 |
} |
| 379 |
|
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/** |
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* Keyword-searches published posts or pages with WordPress's native search |
| 382 |
* (`WP_Query` `s=`), returning data rich enough for the agent to compare |
| 383 |
* AND for the UI to render links. |
| 384 |
* |
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* No AI analysis is required — every published post/page is searchable. |
| 386 |
* |
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* @param string $post_type 'post' | 'page'. |
| 388 |
* @param string $query Keyword search terms (may be empty to list newest). |
| 389 |
* @param int $offset |
| 390 |
* @return array |
| 391 |
*/ |
| 392 |
function openstation_ai_search_fetch_posts( $post_type, $query, $offset ) { |
| 393 |
$wp_query = new WP_Query( |
| 394 |
array( |
| 395 |
'post_type' => $post_type, |
| 396 |
'post_status' => 'publish', |
| 397 |
's' => (string) $query, |
| 398 |
'posts_per_page' => OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 399 |
'offset' => $offset, |
| 400 |
'no_found_rows' => false, |
| 401 |
'update_post_term_cache' => false, |
| 402 |
'update_post_meta_cache' => false, |
| 403 |
) |
| 404 |
); |
| 405 |
|
| 406 |
$items = array(); |
| 407 |
foreach ( $wp_query->posts as $post ) { |
| 408 |
$items[] = array( |
| 409 |
// Identity — used to build the final entity detail. |
| 410 |
'id' => $post->ID, |
| 411 |
'type' => $post->post_type, |
| 412 |
// Comparison data for the model — real title + content excerpt. |
| 413 |
'title' => wp_strip_all_tags( $post->post_title ), |
| 414 |
'excerpt' => openstation_ai_search_excerpt( $post->post_content ), |
| 415 |
'date' => $post->post_date ? substr( $post->post_date, 0, 10 ) : '', |
| 416 |
// Links — passed through so the UI can link to the entity |
| 417 |
// once the agent identifies a match. |
| 418 |
'url' => (string) get_permalink( $post ), |
| 419 |
'edit_url' => (string) get_edit_post_link( $post->ID, 'raw' ), |
| 420 |
); |
| 421 |
} |
| 422 |
|
| 423 |
$total = (int) $wp_query->found_posts; |
| 424 |
|
| 425 |
return array( |
| 426 |
'tool' => 'search_' . $post_type . 's', |
| 427 |
'query' => (string) $query, |
| 428 |
'offset' => $offset, |
| 429 |
'items' => $items, |
| 430 |
'count' => count( $items ), |
| 431 |
'total' => $total, |
| 432 |
'has_more' => ( $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE ) < $total, |
| 433 |
'next_offset' => $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 434 |
); |
| 435 |
} |
| 436 |
|
| 437 |
/** |
| 438 |
* Trims raw post/comment content into a plain-text excerpt for the model. |
| 439 |
* |
| 440 |
* @param string $content Raw post/comment content. |
| 441 |
* @return string |
| 442 |
*/ |
| 443 |
function openstation_ai_search_excerpt( $content ) { |
| 444 |
$text = wp_strip_all_tags( (string) $content ); |
| 445 |
$text = preg_replace( '/\s+/', ' ', trim( $text ) ); |
| 446 |
return (string) mb_substr( $text, 0, 300 ); |
| 447 |
} |
| 448 |
|
| 449 |
/** |
| 450 |
* Keyword-searches approved comments across all posts with WordPress's |
| 451 |
* native comment search (`get_comments` `search=`). |
| 452 |
* |
| 453 |
* No AI analysis is required — every approved comment is searchable. |
| 454 |
* |
| 455 |
* @param string $query Keyword search terms (may be empty to list newest). |
| 456 |
* @param int $offset |
| 457 |
* @return array |
| 458 |
*/ |
| 459 |
function openstation_ai_search_fetch_comments( $query, $offset ) { |
| 460 |
$base_args = array( |
| 461 |
'status' => 'approve', |
| 462 |
'type' => 'comment', |
| 463 |
'search' => (string) $query, |
| 464 |
); |
| 465 |
|
| 466 |
$comments = get_comments( |
| 467 |
array_merge( |
| 468 |
$base_args, |
| 469 |
array( |
| 470 |
'number' => OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 471 |
'offset' => $offset, |
| 472 |
'count' => false, |
| 473 |
) |
| 474 |
) |
| 475 |
); |
| 476 |
|
| 477 |
$total = (int) get_comments( array_merge( $base_args, array( 'count' => true ) ) ); |
| 478 |
|
| 479 |
// Prime the parent posts in a single query so the per-comment |
| 480 |
// get_post() calls below are cache hits, not N+1 round-trips. |
| 481 |
$parent_ids = array_unique( |
| 482 |
array_map( |
| 483 |
static function ( $c ) { |
| 484 |
return (int) $c->comment_post_ID; |
| 485 |
}, |
| 486 |
$comments |
| 487 |
) |
| 488 |
); |
| 489 |
if ( $parent_ids ) { |
| 490 |
_prime_post_caches( $parent_ids, false, false ); |
| 491 |
} |
| 492 |
|
| 493 |
$items = array(); |
| 494 |
foreach ( $comments as $comment ) { |
| 495 |
$parent_post = get_post( $comment->comment_post_ID ); |
| 496 |
$parent_title = $parent_post ? wp_strip_all_tags( $parent_post->post_title ) : ''; |
| 497 |
|
| 498 |
$items[] = array( |
| 499 |
'id' => (int) $comment->comment_ID, |
| 500 |
'type' => 'comment', |
| 501 |
// Comparison data — real comment text + parent post title. |
| 502 |
'post_title' => $parent_title, |
| 503 |
'excerpt' => openstation_ai_search_excerpt( $comment->comment_content ), |
| 504 |
// Links. |
| 505 |
'url' => (string) get_comment_link( $comment ), |
| 506 |
'edit_url' => admin_url( 'comment.php?action=editcomment&c=' . (int) $comment->comment_ID ), |
| 507 |
'post_id' => (int) $comment->comment_post_ID, |
| 508 |
'post_url' => $parent_post ? (string) get_permalink( $parent_post ) : '', |
| 509 |
); |
| 510 |
} |
| 511 |
|
| 512 |
return array( |
| 513 |
'tool' => 'search_comments', |
| 514 |
'query' => (string) $query, |
| 515 |
'offset' => $offset, |
| 516 |
'items' => $items, |
| 517 |
'count' => count( $items ), |
| 518 |
'total' => $total, |
| 519 |
'has_more' => ( $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE ) < $total, |
| 520 |
'next_offset' => $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 521 |
); |
| 522 |
} |
| 523 |
|
| 524 |
// --------------------------------------------------------------------------- |
| 525 |
// Entity detail builder — final REST response |
| 526 |
// --------------------------------------------------------------------------- |
| 527 |
|
| 528 |
/** |
| 529 |
* Keyword-searches approved comments on a specific post. |
| 530 |
* |
| 531 |
* Used by the `search_comments_by_post` tool — the model calls this after |
| 532 |
* identifying a post via `search_posts`, giving it a scoped, precise set of |
| 533 |
* comments to compare against the user's description. An empty `$query` |
| 534 |
* lists the post's comments without keyword filtering. |
| 535 |
* |
| 536 |
* @param int $post_id The WordPress post ID. |
| 537 |
* @param string $query Keyword search terms (may be empty). |
| 538 |
* @param int $offset |
| 539 |
* @return array Tool result payload. |
| 540 |
*/ |
| 541 |
function openstation_ai_search_fetch_comments_by_post( $post_id, $query, $offset ) { |
| 542 |
$post_id = (int) $post_id; |
| 543 |
|
| 544 |
if ( $post_id <= 0 ) { |
| 545 |
return array( |
| 546 |
'tool' => 'search_comments_by_post', |
| 547 |
'post_id' => $post_id, |
| 548 |
'offset' => $offset, |
| 549 |
'items' => array(), |
| 550 |
'count' => 0, |
| 551 |
'total' => 0, |
| 552 |
'has_more' => false, |
| 553 |
'error' => 'post_id must be a positive integer.', |
| 554 |
); |
| 555 |
} |
| 556 |
|
| 557 |
$base_args = array( |
| 558 |
'post_id' => $post_id, |
| 559 |
'status' => 'approve', |
| 560 |
'type' => 'comment', |
| 561 |
'search' => (string) $query, |
| 562 |
); |
| 563 |
|
| 564 |
$comments = get_comments( |
| 565 |
array_merge( |
| 566 |
$base_args, |
| 567 |
array( |
| 568 |
'number' => OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 569 |
'offset' => $offset, |
| 570 |
'count' => false, |
| 571 |
) |
| 572 |
) |
| 573 |
); |
| 574 |
|
| 575 |
$total = (int) get_comments( array_merge( $base_args, array( 'count' => true ) ) ); |
| 576 |
|
| 577 |
$parent_post = get_post( $post_id ); |
| 578 |
$parent_title = $parent_post ? wp_strip_all_tags( $parent_post->post_title ) : ''; |
| 579 |
|
| 580 |
$items = array(); |
| 581 |
foreach ( $comments as $comment ) { |
| 582 |
$items[] = array( |
| 583 |
'id' => (int) $comment->comment_ID, |
| 584 |
'type' => 'comment', |
| 585 |
'post_id' => $post_id, |
| 586 |
'post_title' => $parent_title, |
| 587 |
'excerpt' => openstation_ai_search_excerpt( $comment->comment_content ), |
| 588 |
'url' => (string) get_comment_link( $comment ), |
| 589 |
'edit_url' => admin_url( 'comment.php?action=editcomment&c=' . (int) $comment->comment_ID ), |
| 590 |
); |
| 591 |
} |
| 592 |
|
| 593 |
return array( |
| 594 |
'tool' => 'search_comments_by_post', |
| 595 |
'post_id' => $post_id, |
| 596 |
'post_title' => $parent_title, |
| 597 |
'query' => (string) $query, |
| 598 |
'offset' => $offset, |
| 599 |
'items' => $items, |
| 600 |
'count' => count( $items ), |
| 601 |
'total' => $total, |
| 602 |
'has_more' => ( $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE ) < $total, |
| 603 |
'next_offset' => $offset + OPENSTATION_AI_SEARCH_BATCH_SIZE, |
| 604 |
); |
| 605 |
} |
| 606 |
|
| 607 |
// --------------------------------------------------------------------------- |
| 608 |
// Entity detail builder — final REST response |
| 609 |
// --------------------------------------------------------------------------- |
| 610 |
|
| 611 |
/** |
| 612 |
* Returns the full entity record used in the `entity` field of the REST |
| 613 |
* response. All URLs are included so the UI can render direct links. |
| 614 |
* |
| 615 |
* Built entirely from core post/comment fields — no AI analysis meta is |
| 616 |
* required. Comments opportunistically surface the `spam` / `harmful` |
| 617 |
* verdict when the comment-moderation analysis happens to have run, but |
| 618 |
* its absence never blocks the entity from being returned. |
| 619 |
* |
| 620 |
* @param string $entity_type 'post' | 'page' | 'comment'. |
| 621 |
* @param int $entity_id |
| 622 |
* @return array|null |
| 623 |
*/ |
| 624 |
function openstation_ai_search_build_entity( $entity_type, $entity_id ) { |
| 625 |
$entity_id = (int) $entity_id; |
| 626 |
|
| 627 |
if ( in_array( $entity_type, array( 'post', 'page' ), true ) ) { |
| 628 |
$post = get_post( $entity_id ); |
| 629 |
if ( ! $post instanceof WP_Post ) { |
| 630 |
return null; |
| 631 |
} |
| 632 |
return array( |
| 633 |
'id' => $entity_id, |
| 634 |
'type' => $post->post_type, |
| 635 |
'title' => wp_strip_all_tags( $post->post_title ), |
| 636 |
'status' => $post->post_status, |
| 637 |
'date' => $post->post_date ? substr( $post->post_date, 0, 10 ) : '', |
| 638 |
'url' => (string) get_permalink( $post ), |
| 639 |
'edit_url' => (string) get_edit_post_link( $entity_id, 'raw' ), |
| 640 |
'excerpt' => openstation_ai_search_excerpt( $post->post_content ), |
| 641 |
); |
| 642 |
} |
| 643 |
|
| 644 |
if ( 'comment' === $entity_type ) { |
| 645 |
$comment = get_comment( $entity_id ); |
| 646 |
if ( ! $comment instanceof WP_Comment ) { |
| 647 |
return null; |
| 648 |
} |
| 649 |
$meta = openstation_ai_get_meta( 'comment', $entity_id ); |
| 650 |
$parent_post = get_post( $comment->comment_post_ID ); |
| 651 |
return array( |
| 652 |
'id' => $entity_id, |
| 653 |
'type' => 'comment', |
| 654 |
'excerpt' => openstation_ai_search_excerpt( $comment->comment_content ), |
| 655 |
'post_id' => (int) $comment->comment_post_ID, |
| 656 |
'post_title' => $parent_post ? wp_strip_all_tags( $parent_post->post_title ) : '', |
| 657 |
'post_url' => $parent_post ? (string) get_permalink( $parent_post ) : '', |
| 658 |
'url' => (string) get_comment_link( $comment ), |
| 659 |
'edit_url' => admin_url( 'comment.php?action=editcomment&c=' . $entity_id ), |
| 660 |
'harmful' => $meta ? (bool) ( $meta['harmful'] ?? false ) : false, |
| 661 |
'spam' => $meta ? (bool) ( $meta['spam'] ?? false ) : false, |
| 662 |
); |
| 663 |
} |
| 664 |
|
| 665 |
return null; |
| 666 |
} |
| 667 |
|
| 668 |
// --------------------------------------------------------------------------- |
| 669 |
// Agentic search loop |
| 670 |
// --------------------------------------------------------------------------- |
| 671 |
|
| 672 |
/** |
| 673 |
* Returns a friendly progress message for a tool name — surfaced to the |
| 674 |
* client via SSE so the user sees "Looking through your posts…" rather |
| 675 |
* than the raw tool call. |
| 676 |
* |
| 677 |
* @param string $tool_name |
| 678 |
* @return string |
| 679 |
*/ |
| 680 |
function openstation_ai_progress_message( $tool_name ) { |
| 681 |
switch ( $tool_name ) { |
| 682 |
case 'search_posts': |
| 683 |
return 'Looking through your posts…'; |
| 684 |
case 'search_pages': |
| 685 |
return 'Checking your pages…'; |
| 686 |
case 'search_comments': |
| 687 |
return 'Reading through comments…'; |
| 688 |
case 'search_comments_by_post': |
| 689 |
return 'Scanning comments on that post…'; |
| 690 |
case 'list_admin_pages': |
| 691 |
return 'Finding the right admin page…'; |
| 692 |
case 'search_wporg_plugins': |
| 693 |
return 'Searching the WordPress.org plugin directory…'; |
| 694 |
case 'get_php_error_log': |
| 695 |
return 'Tailing the PHP error log…'; |
| 696 |
} |
| 697 |
return 'Thinking…'; |
| 698 |
} |
| 699 |
|
| 700 |
/** |
| 701 |
* Returns the tools a client may resume an exhausted search from. |
| 702 |
* |
| 703 |
* Single source of truth for every `resume_tool` allowlist — the REST |
| 704 |
* arg sanitizer, the SSE handler, and the `$initial_tool` validation |
| 705 |
* inside `openstation_ai_run_search()`. `search_comments_by_post` is |
| 706 |
* deliberately absent: the `continue` payload carries no `post_id`, so |
| 707 |
* it cannot truly resume — exhausted runs map it to `search_comments` |
| 708 |
* when building the `continue` object. |
| 709 |
* |
| 710 |
* @return string[] Tool names. |
| 711 |
*/ |
| 712 |
function openstation_ai_search_resumable_tools() { |
| 713 |
return array( 'search_posts', 'search_pages', 'search_comments' ); |
| 714 |
} |
| 715 |
|
| 716 |
/** |
| 717 |
* Projects a tool's `parameters` schema onto the provider-supported subset. |
| 718 |
* |
| 719 |
* The Abilities API (and plugin-supplied tools) may use the full breadth of JSON |
| 720 |
* Schema, but the provider's tool-schema validator does not — and it rejects the |
| 721 |
* whole request, not just the offending tool, so ONE tool with a |
| 722 |
* legal-but-unsupported schema makes the entire assistant return a 400 before the |
| 723 |
* model runs. Three shapes that are valid JSON Schema, but rejected here, have |
| 724 |
* been seen in the wild (see the linked issue): |
| 725 |
* |
| 726 |
* 1. `type` as an array, e.g. ['object','null'] — an ability's GET/null |
| 727 |
* run-path. The provider wants the literal string "object" at the top level. |
| 728 |
* 2. A top-level `oneOf` / `anyOf` / `allOf`, e.g. "post_id OR slug". Rejected |
| 729 |
* with "does not support oneOf, allOf, or anyOf at the top level". |
| 730 |
* 3. `properties` as an empty PHP array, which encodes to JSON as `[]` where an |
| 731 |
* object schema needs `{}`. |
| 732 |
* |
| 733 |
* This reshapes only the copy advertised to the model. The ability itself is |
| 734 |
* untouched: `WP_Ability::execute()` still validates arguments against the real |
| 735 |
* schema and `permission_callback` still gates execution, so nothing loses |
| 736 |
* enforcement — the model is simply told the constraint in prose (the tool |
| 737 |
* description) instead of in a schema construct the provider can't parse. Only |
| 738 |
* the TOP level is constrained; a combinator nested inside a property is a real |
| 739 |
* constraint the provider accepts, so it is left intact. |
| 740 |
* |
| 741 |
* @param mixed $schema A tool parameters schema (array), or empty/non-array. |
| 742 |
* @return array A provider-safe object schema for a tool `parameters` block. |
| 743 |
*/ |
| 744 |
function openstation_ai_normalize_tool_schema( $schema ) { |
| 745 |
if ( ! is_array( $schema ) || empty( $schema ) ) { |
| 746 |
return array( |
| 747 |
'type' => 'object', |
| 748 |
'properties' => (object) array(), |
| 749 |
); |
| 750 |
} |
| 751 |
|
| 752 |
// Recursively drop the WordPress-only arg-schema keys |
| 753 |
// (`sanitize_callback` / `validate_callback` / `arg_options`) — |
| 754 |
// see the helper's docblock for why this must run at every depth. |
| 755 |
$schema = openstation_ai_strip_wp_schema_keys( $schema ); |
| 756 |
|
| 757 |
// Top-level tool parameters must be the literal "object", never a union. |
| 758 |
$schema['type'] = 'object'; |
| 759 |
|
| 760 |
// Strip top-level combinators — the provider rejects them outright, and one |
| 761 |
// such tool 400s the whole request. Nested combinators are left alone. |
| 762 |
unset( $schema['oneOf'], $schema['allOf'], $schema['anyOf'] ); |
| 763 |
|
| 764 |
// An empty PHP array encodes as `[]`; an object schema's properties need `{}`. |
| 765 |
// A schema with no `properties` at all (e.g. one whose only content was a |
| 766 |
// stripped top-level combinator) gets an empty object for the same reason. |
| 767 |
if ( ! isset( $schema['properties'] ) || array() === $schema['properties'] ) { |
| 768 |
$schema['properties'] = (object) array(); |
| 769 |
} |
| 770 |
|
| 771 |
return $schema; |
| 772 |
} |
| 773 |
|
| 774 |
/** |
| 775 |
* Recursively removes the WordPress-only arg-schema keys from a tool schema. |
| 776 |
* |
| 777 |
* WordPress arg schemas legally extend JSON Schema with PHP-callable keys — |
| 778 |
* `sanitize_callback`, `validate_callback`, and (on meta args) `arg_options`. |
| 779 |
* Abilities registered from REST arg definitions carry them at every property |
| 780 |
* level, and providers that validate tool schemas strictly reject any unknown |
| 781 |
* field ("Invalid JSON payload received. Unknown name \"sanitize_callback\""), |
| 782 |
* 400-ing the whole request over one property. |
| 783 |
* |
| 784 |
* The walk is structure-aware, not a blind key sweep: maps under `properties` / |
| 785 |
* `patternProperties` are keyed by PROPERTY NAME, so a property that happens to |
| 786 |
* be called `sanitize_callback` is preserved — only its schema value is |
| 787 |
* cleaned. Recursion covers every position a subschema can occupy: property |
| 788 |
* values, `items` (single schema or tuple list), array-shaped |
| 789 |
* `additionalProperties`, and nested `oneOf` / `allOf` / `anyOf` branches |
| 790 |
* (which are kept — only the TOP level of the tool schema strips combinators). |
| 791 |
* |
| 792 |
* @param array $schema A tool parameters (sub)schema. |
| 793 |
* @return array The schema without WP-only keys, at any depth. |
| 794 |
*/ |
| 795 |
function openstation_ai_strip_wp_schema_keys( array $schema ) { |
| 796 |
unset( $schema['sanitize_callback'], $schema['validate_callback'], $schema['arg_options'] ); |
| 797 |
|
| 798 |
foreach ( array( 'properties', 'patternProperties' ) as $map_key ) { |
| 799 |
if ( isset( $schema[ $map_key ] ) && is_array( $schema[ $map_key ] ) ) { |
| 800 |
foreach ( $schema[ $map_key ] as $name => $sub ) { |
| 801 |
if ( is_array( $sub ) ) { |
| 802 |
$schema[ $map_key ][ $name ] = openstation_ai_strip_wp_schema_keys( $sub ); |
| 803 |
} |
| 804 |
} |
| 805 |
} |
| 806 |
} |
| 807 |
|
| 808 |
if ( isset( $schema['items'] ) && is_array( $schema['items'] ) ) { |
| 809 |
$items = $schema['items']; |
| 810 |
$is_list = array_keys( $items ) === range( 0, count( $items ) - 1 ); |
| 811 |
if ( $is_list && array() !== $items ) { |
| 812 |
// Tuple form — a list of schemas. |
| 813 |
foreach ( $items as $i => $sub ) { |
| 814 |
if ( is_array( $sub ) ) { |
| 815 |
$items[ $i ] = openstation_ai_strip_wp_schema_keys( $sub ); |
| 816 |
} |
| 817 |
} |
| 818 |
$schema['items'] = $items; |
| 819 |
} else { |
| 820 |
$schema['items'] = openstation_ai_strip_wp_schema_keys( $items ); |
| 821 |
} |
| 822 |
} |
| 823 |
|
| 824 |
if ( isset( $schema['additionalProperties'] ) && is_array( $schema['additionalProperties'] ) ) { |
| 825 |
$schema['additionalProperties'] = openstation_ai_strip_wp_schema_keys( $schema['additionalProperties'] ); |
| 826 |
} |
| 827 |
|
| 828 |
foreach ( array( 'oneOf', 'allOf', 'anyOf' ) as $combinator ) { |
| 829 |
if ( isset( $schema[ $combinator ] ) && is_array( $schema[ $combinator ] ) ) { |
| 830 |
foreach ( $schema[ $combinator ] as $i => $sub ) { |
| 831 |
if ( is_array( $sub ) ) { |
| 832 |
$schema[ $combinator ][ $i ] = openstation_ai_strip_wp_schema_keys( $sub ); |
| 833 |
} |
| 834 |
} |
| 835 |
} |
| 836 |
} |
| 837 |
|
| 838 |
return $schema; |
| 839 |
} |
| 840 |
|
| 841 |
/** |
| 842 |
* Runs the agentic content-search loop. |
| 843 |
* |
| 844 |
* The model receives focused tools — search_posts, search_pages, |
| 845 |
* search_comments, search_comments_by_post — and a system prompt that |
| 846 |
* guides it to choose the right one based on query semantics and pass the |
| 847 |
* distilled keywords as `query`. "Someone said congratulations" → it calls |
| 848 |
* search_comments. "I wrote about paella" → it calls search_posts. No |
| 849 |
* entity_type routing from the caller is needed for a fresh search. |
| 850 |
* |
| 851 |
* For continuation runs ($initial_tool + $start_offset > 0), the system |
| 852 |
* message primes the agent to resume from the last searched position with |
| 853 |
* the same keywords. |
| 854 |
* |
| 855 |
* @param string $query User's natural-language search. |
| 856 |
* @param string|null $initial_tool Tool name to resume from, or null for fresh search. |
| 857 |
* @param int $start_offset Offset to resume from (0 for fresh). |
| 858 |
* @param callable|null $on_progress Optional progress emitter for SSE ticks. |
| 859 |
* @param array $extra Extensibility context (command tools, prompt overrides, …). |
| 860 |
* @return array|WP_Error |
| 861 |
*/ |
| 862 |
function openstation_ai_run_search( $query, $initial_tool = null, $start_offset = 0, $on_progress = null, array $extra = array() ) { |
| 863 |
/** |
| 864 |
* Progress emitter — sends a tick to the caller if they provided a |
| 865 |
* callable; no-op otherwise. Callers use this to render real-time |
| 866 |
* status to the user via SSE. |
| 867 |
*/ |
| 868 |
$emit = static function ( array $event ) use ( $on_progress ) { |
| 869 |
if ( is_callable( $on_progress ) ) { |
| 870 |
$on_progress( $event ); |
| 871 |
} |
| 872 |
}; |
| 873 |
$start_offset = max( 0, (int) $start_offset ); |
| 874 |
$search_tools = array( 'search_posts', 'search_pages', 'search_comments', 'search_comments_by_post' ); |
| 875 |
$valid_tools = array_merge( |
| 876 |
$search_tools, |
| 877 |
array( 'list_admin_pages', 'search_wporg_plugins', 'get_php_error_log' ) |
| 878 |
); |
| 879 |
|
| 880 |
// ----------------------------------------------------------------------- |
| 881 |
// Extensibility context — command tools from the client, PHP-registered |
| 882 |
// tools from the server-side registry, system-prompt overrides, and a |
| 883 |
// per-call request_id for observability fanout. |
| 884 |
// ----------------------------------------------------------------------- |
| 885 |
$user_id = isset( $extra['user_id'] ) ? (int) $extra['user_id'] : get_current_user_id(); |
| 886 |
$request_id = isset( $extra['request_id'] ) && is_string( $extra['request_id'] ) && '' !== $extra['request_id'] |
| 887 |
? (string) $extra['request_id'] |
| 888 |
: ( function_exists( 'wp_generate_uuid4' ) ? wp_generate_uuid4() : uniqid( 'openstation_ai_', true ) ); |
| 889 |
$command_tools_raw = isset( $extra['command_tools'] ) && is_array( $extra['command_tools'] ) ? $extra['command_tools'] : array(); |
| 890 |
$system_prompt_text = isset( $extra['system_prompt_text'] ) && is_string( $extra['system_prompt_text'] ) ? $extra['system_prompt_text'] : ''; |
| 891 |
$system_prompt_mode = isset( $extra['system_prompt_mode'] ) && in_array( $extra['system_prompt_mode'], array( 'append', 'replace' ), true ) |
| 892 |
? (string) $extra['system_prompt_mode'] |
| 893 |
: 'append'; |
| 894 |
|
| 895 |
/** |
| 896 |
* Fires once per `/ai/search` invocation, after validation and |
| 897 |
* before any the provider call. First anchor in the observability trio |
| 898 |
* (`openstation_ai_search_started` / `openstation_ai_tool_called` |
| 899 |
* / `openstation_ai_search_completed`). |
| 900 |
* |
| 901 |
* @param array $context { |
| 902 |
* @type string $query User query. |
| 903 |
* @type int $user_id |
| 904 |
* @type string $request_id UUID correlating the whole run. |
| 905 |
* } |
| 906 |
*/ |
| 907 |
do_action( |
| 908 |
'openstation_ai_search_started', |
| 909 |
array( |
| 910 |
'query' => $query, |
| 911 |
'user_id' => $user_id, |
| 912 |
'request_id' => $request_id, |
| 913 |
) |
| 914 |
); |
| 915 |
|
| 916 |
if ( null !== $initial_tool && ! in_array( $initial_tool, openstation_ai_search_resumable_tools(), true ) ) { |
| 917 |
$initial_tool = null; |
| 918 |
} |
| 919 |
|
| 920 |
// When resuming a previous exhausted run, prime the model with the |
| 921 |
// starting position so it doesn't waste iterations on already-searched |
| 922 |
// content. |
| 923 |
$continuation_note = ''; |
| 924 |
if ( null !== $initial_tool && ( $start_offset > 0 || 'search_posts' !== $initial_tool ) ) { |
| 925 |
$continuation_note = sprintf( |
| 926 |
"\n\nNote: This is a continuation of a previous search. Begin with %s using the same search keywords at offset=%d and work forward.", |
| 927 |
$initial_tool, |
| 928 |
$start_offset |
| 929 |
); |
| 930 |
} |
| 931 |
|
| 932 |
$instructions = " |
| 933 |
You are a friendly, conversational assistant embedded in a WordPress site. You help the site owner: |
| 934 |
|
| 935 |
1. **Find content** they've written (posts, pages, comments) by describing it in natural language. |
| 936 |
2. **Navigate wp-admin** when they ask where to find something (\"where are the categories?\", \"how do I manage users?\"). |
| 937 |
3. **Recommend plugins** from the official WordPress.org directory when they need extra functionality. |
| 938 |
4. **Check the site's error log** when they're troubleshooting something. |
| 939 |
5. **Answer anything else your tools can** — you may have more tools than the ones described below (WordPress and other plugins register their own, e.g. site / user / environment / version info). Your actual tool list is authoritative: whenever a tool can answer the request, call it and summarise the result, even if it isn't in the list below. |
| 940 |
6. **Chat** — only when no tool fits, answer conversationally. |
| 941 |
|
| 942 |
Tone: warm, concise, helpful. First person (\"I found this post…\", \"Here's where you'll find that…\"). Not a search engine tone — no \"Match found\" or robot phrasing. |
| 943 |
|
| 944 |
Tools (your actual tool list may include more than these — use any that fit the request): |
| 945 |
- search_posts / search_pages / search_comments / search_comments_by_post(post_id, query, offset): keyword content-lookup tools backed by WordPress's native search. Distil the user's description into the essential search keywords and pass them as `query` (e.g. \"that long post about making paella\" → query \"paella\"). Inspect the returned title + excerpt and stop once you find a good match. If has_more is true and nothing matched, call the same tool with next_offset (reuse the same query), or try different keywords. When the query mentions BOTH a post and a comment on that post, call search_posts first to identify the post, THEN search_comments_by_post with the ID. If keyword search returns nothing, broaden or simplify the keywords before giving up. |
| 946 |
- list_admin_pages: returns the full catalog of wp-admin destinations. Call once per navigation query, then select the 1-3 most relevant entries. |
| 947 |
- search_wporg_plugins(query): searches the official WordPress.org plugin directory. Use when the user asks for a plugin recommendation (\"a plugin for X\", \"is there a plugin that does Y?\"). Returns up to 10 plugins with ratings, install counts, and admin install URLs. Present the best 3-5 as admin_links with titles like \"Plugin Name · 5M+ installs · 4.8� |
| 948 |
\" (rating is 0-100, divide by 20 to get stars). |
| 949 |
- get_php_error_log(lines): reads the tail of the site's PHP error log. Admin-only (the tool itself checks). Use when the user asks \"any errors?\", \"check the logs\", \"what's broken?\", troubleshooting. Each entry has { timestamp, level, message }. Summarise the most important errors (Fatal > Warning > Notice) in your message; don't copy-paste everything. |
| 950 |
|
| 951 |
Choosing which track: |
| 952 |
- \"I remember a post/page/comment about X\" → the corresponding search_* tool. |
| 953 |
- \"where can I find X?\", \"how do I manage Y?\", \"create/add/new …\", \"take me to …\", \"open …\", \"switch/activate …\", or any navigate/do intent → list_admin_pages, then suggest the 1-3 best destinations as admin_links (answer_type \"navigation\"). You suggest the link; the user opens it — never assume it's opened. |
| 954 |
- \"plugin for X\" / \"recommend a plugin\" → search_wporg_plugins → present as admin_links. |
| 955 |
- \"any errors?\" / \"check logs\" / troubleshooting → get_php_error_log → summarise in chat. |
| 956 |
- Any other factual question about the site (its version, PHP/environment, the current user, or anything one of your other tools covers) → call that tool, then summarise its result with answer_type \"chat\". |
| 957 |
- Greeting, unclear, or chit-chat → answer_type \"chat\" with a brief helpful message (no tools needed). |
| 958 |
|
| 959 |
Always return one of three answer_type values in the structured output: |
| 960 |
- \"entity\": you identified a single post/page/comment. Fill entity_id + entity_type. admin_links = null. |
| 961 |
- \"navigation\": you're recommending admin pages OR plugin install links. Fill admin_links. entity_id + entity_type = null. |
| 962 |
- \"chat\": you're answering conversationally — including results summarised from any tool (error logs, environment/version info, other plugins' tools), greetings, and \"nothing found\" answers. entity_id + entity_type + admin_links all null. |
| 963 |
|
| 964 |
The message field is always a friendly sentence or two shown directly to the user. Make it sound like a person, not a log line. |
| 965 |
"; |
| 966 |
|
| 967 |
if ( $continuation_note ) { |
| 968 |
$instructions .= $continuation_note; |
| 969 |
} |
| 970 |
|
| 971 |
// ----------------------------------------------------------------------- |
| 972 |
// System-prompt extensibility. All three layers — appendix filter, |
| 973 |
// client override (append/replace with capability gate), and final |
| 974 |
// transform — live in `openstation_ai_compose_instructions()` so the |
| 975 |
// primary run and the follow-up leg stay in lockstep. See the |
| 976 |
// helper for the order of application; the filter docblocks at its |
| 977 |
// `apply_filters()` call sites carry the public contract on each |
| 978 |
// extension point. |
| 979 |
// ----------------------------------------------------------------------- |
| 980 |
$prompt_context = array( |
| 981 |
'query' => $query, |
| 982 |
'user_id' => $user_id, |
| 983 |
'request_id' => $request_id, |
| 984 |
); |
| 985 |
|
| 986 |
$instructions = openstation_ai_compose_instructions( |
| 987 |
$instructions, |
| 988 |
$prompt_context, |
| 989 |
array( |
| 990 |
'text' => $system_prompt_text, |
| 991 |
'mode' => $system_prompt_mode, |
| 992 |
) |
| 993 |
); |
| 994 |
|
| 995 |
// ----------------------------------------------------------------------- |
| 996 |
// Tool assembly — built-in search/navigation abilities + client-supplied |
| 997 |
// command tools. |
| 998 |
// |
| 999 |
// Built-in tools are WordPress Abilities API abilities. Each is advertised |
| 1000 |
// to the model as a function declaration named after the ability (namespace |
| 1001 |
// stripped), and $ability_by_tool maps that name back to the ability so the |
| 1002 |
// agent loop can resolve + execute() it (permission + input/output |
| 1003 |
// validation happen inside execute()). |
| 1004 |
// ----------------------------------------------------------------------- |
| 1005 |
$ability_by_tool = array(); |
| 1006 |
$builtin_tools = array(); |
| 1007 |
|
| 1008 |
foreach ( openstation_ai_search_ability_names() as $ability_name ) { |
| 1009 |
$ability = function_exists( 'wp_get_ability' ) ? wp_get_ability( $ability_name ) : null; |
| 1010 |
if ( ! $ability instanceof WP_Ability ) { |
| 1011 |
continue; |
| 1012 |
} |
| 1013 |
|
| 1014 |
$tool_name = openstation_ai_ability_tool_name( $ability_name ); |
| 1015 |
$ability_by_tool[ $tool_name ] = $ability_name; |
| 1016 |
$valid_tools[] = $tool_name; |
| 1017 |
|
| 1018 |
$input_schema = $ability->get_input_schema(); |
| 1019 |
$builtin_tools[] = array( |
| 1020 |
'type' => 'function', |
| 1021 |
'name' => $tool_name, |
| 1022 |
'description' => (string) $ability->get_description(), |
| 1023 |
'parameters' => ! empty( $input_schema ) |
| 1024 |
? $input_schema |
| 1025 |
: array( |
| 1026 |
'type' => 'object', |
| 1027 |
'properties' => (object) array(), |
| 1028 |
), |
| 1029 |
); |
| 1030 |
} |
| 1031 |
|
| 1032 |
// Command tools — namespaced as `command_<slug>` on the server so |
| 1033 |
// they can't collide with built-in tool names. Each takes a single |
| 1034 |
// optional `args` string arg (matches the slash-command contract |
| 1035 |
// where args are a single string the plugin's `run()` parses). |
| 1036 |
$command_tools_by_name = array(); |
| 1037 |
$command_defs = array(); |
| 1038 |
|
| 1039 |
foreach ( $command_tools_raw as $cmd ) { |
| 1040 |
if ( ! is_array( $cmd ) ) { |
| 1041 |
continue; |
| 1042 |
} |
| 1043 |
$slug = isset( $cmd['slug'] ) ? (string) $cmd['slug'] : ''; |
| 1044 |
if ( '' === $slug || ! preg_match( '/^[a-z0-9_\-]+$/', $slug ) ) { |
| 1045 |
continue; |
| 1046 |
} |
| 1047 |
/** |
| 1048 |
* Per-tool filter on the client-supplied command list. Return |
| 1049 |
* `false` to drop a command entirely before it reaches the |
| 1050 |
* model — the right hook for per-role / per-command gating. |
| 1051 |
* |
| 1052 |
* @param bool|array $allowed Either the (possibly mutated) command |
| 1053 |
* tool entry, or `false` to drop it. |
| 1054 |
* @param string $slug Command slug. |
| 1055 |
* @param array $context { user_id, request_id }. |
| 1056 |
*/ |
| 1057 |
$allowed = apply_filters( |
| 1058 |
'openstation_ai_command_allowed', |
| 1059 |
$cmd, |
| 1060 |
$slug, |
| 1061 |
array( |
| 1062 |
'user_id' => $user_id, |
| 1063 |
'request_id' => $request_id, |
| 1064 |
) |
| 1065 |
); |
| 1066 |
if ( false === $allowed || ! is_array( $allowed ) ) { |
| 1067 |
continue; |
| 1068 |
} |
| 1069 |
$label = isset( $allowed['label'] ) ? (string) $allowed['label'] : $slug; |
| 1070 |
$description = isset( $allowed['description'] ) ? (string) $allowed['description'] : ''; |
| 1071 |
$hint = isset( $allowed['hint'] ) ? (string) $allowed['hint'] : ''; |
| 1072 |
$tool_name = 'command_' . $slug; |
| 1073 |
|
| 1074 |
$command_tools_by_name[ $tool_name ] = array( 'slug' => $slug ); |
| 1075 |
$command_defs[] = array( |
| 1076 |
'type' => 'function', |
| 1077 |
'name' => $tool_name, |
| 1078 |
'description' => trim( $label . ( '' !== $description ? ' — ' . $description : '' ) ), |
| 1079 |
'parameters' => array( |
| 1080 |
'type' => 'object', |
| 1081 |
'properties' => array( |
| 1082 |
'args' => array( |
| 1083 |
'type' => 'string', |
| 1084 |
'description' => '' !== $hint |
| 1085 |
? sprintf( 'Arguments for this command. Hint: %s', $hint ) |
| 1086 |
: 'Arguments for this command. Leave empty when the command takes none.', |
| 1087 |
), |
| 1088 |
), |
| 1089 |
'required' => array( 'args' ), |
| 1090 |
'additionalProperties' => false, |
| 1091 |
), |
| 1092 |
); |
| 1093 |
} |
| 1094 |
|
| 1095 |
/** |
| 1096 |
* Transform the command-tool subset before merging with the |
| 1097 |
* built-in + registered tools. Useful for bulk gating, renaming, |
| 1098 |
* or injecting synthetic command tools. |
| 1099 |
* |
| 1100 |
* @param array $command_defs Command tool definitions. |
| 1101 |
* @param array $context { user_id, request_id }. |
| 1102 |
*/ |
| 1103 |
$command_defs = (array) apply_filters( |
| 1104 |
'openstation_ai_command_tools', |
| 1105 |
$command_defs, |
| 1106 |
array( |
| 1107 |
'user_id' => $user_id, |
| 1108 |
'request_id' => $request_id, |
| 1109 |
) |
| 1110 |
); |
| 1111 |
|
| 1112 |
$tools = array_merge( $builtin_tools, $command_defs ); |
| 1113 |
|
| 1114 |
/** |
| 1115 |
* Transform the full tool list (built-in abilities + command tools) just |
| 1116 |
* before it goes to the provider. Fires once per run — changes apply to |
| 1117 |
* every iteration in the agent loop. |
| 1118 |
* |
| 1119 |
* @param array $tools Full the provider tool definitions array. |
| 1120 |
* @param array $context { user_id, request_id, query }. |
| 1121 |
*/ |
| 1122 |
$tools = (array) apply_filters( |
| 1123 |
'openstation_ai_tools', |
| 1124 |
$tools, |
| 1125 |
array( |
| 1126 |
'user_id' => $user_id, |
| 1127 |
'request_id' => $request_id, |
| 1128 |
'query' => $query, |
| 1129 |
) |
| 1130 |
); |
| 1131 |
|
| 1132 |
// Normalize every tool's schema onto the provider-supported subset, AFTER the |
| 1133 |
// filter so it covers the complete list the provider will receive — built-in |
| 1134 |
// abilities, command tools, and anything a plugin injected. One tool with a |
| 1135 |
// legal-but-unsupported schema otherwise 400s the entire request, not just its |
| 1136 |
// own tool. Only the model-facing copy is reshaped; abilities still validate |
| 1137 |
// arguments against their real schema in execute(). Idempotent, so a plugin |
| 1138 |
// that already normalizes on the filter above is unaffected. |
| 1139 |
foreach ( $tools as $ti => $tool ) { |
| 1140 |
if ( is_array( $tool ) && isset( $tool['parameters'] ) ) { |
| 1141 |
$tools[ $ti ]['parameters'] = openstation_ai_normalize_tool_schema( $tool['parameters'] ); |
| 1142 |
} |
| 1143 |
} |
| 1144 |
|
| 1145 |
// Widen the permitted-tools list with the command tools — the agent loop |
| 1146 |
// rejects any `function_call` whose name isn't in here (built-in ability |
| 1147 |
// names were added above). |
| 1148 |
foreach ( $command_defs as $def ) { |
| 1149 |
if ( isset( $def['name'] ) ) { |
| 1150 |
$valid_tools[] = (string) $def['name']; |
| 1151 |
} |
| 1152 |
} |
| 1153 |
|
| 1154 |
$answer_schema = openstation_ai_search_answer_schema(); |
| 1155 |
|
| 1156 |
$emit( |
| 1157 |
array( |
| 1158 |
'phase' => 'start', |
| 1159 |
'message' => 'Thinking about your question…', |
| 1160 |
) |
| 1161 |
); |
| 1162 |
|
| 1163 |
// ----------------------------------------------------------------------- |
| 1164 |
// First call — user query as the sole message, instructions as system |
| 1165 |
// guidance. Generation routes through the WordPress AI Client; the tools |
| 1166 |
// are advertised as function declarations and dispatched by this loop. |
| 1167 |
// The full ordered conversation is rebuilt and re-sent each turn. |
| 1168 |
// ----------------------------------------------------------------------- |
| 1169 |
$messages = array( openstation_ai_user_text_message( $query ) ); |
| 1170 |
|
| 1171 |
$turn = openstation_ai_client_generate( $user_id, $messages, $tools, $answer_schema, $instructions ); |
| 1172 |
|
| 1173 |
if ( is_wp_error( $turn ) ) { |
| 1174 |
return $turn; |
| 1175 |
} |
| 1176 |
|
| 1177 |
$last_tool = $initial_tool ?? 'search_posts'; |
| 1178 |
$last_offset = $start_offset; |
| 1179 |
$last_has_more = true; |
| 1180 |
$iterations = 0; |
| 1181 |
|
| 1182 |
// Accumulate token usage across every turn and remember the last model the |
| 1183 |
// AI Client resolved, for the `openstation_ai_search_completed` payload. |
| 1184 |
$total_usage = array( |
| 1185 |
'prompt' => 0, |
| 1186 |
'completion' => 0, |
| 1187 |
'total' => 0, |
| 1188 |
); |
| 1189 |
$last_model = null; |
| 1190 |
$accrue_usage = static function ( $turn ) use ( &$total_usage, &$last_model ) { |
| 1191 |
if ( ! is_array( $turn ) ) { |
| 1192 |
return; |
| 1193 |
} |
| 1194 |
if ( isset( $turn['usage'] ) && is_array( $turn['usage'] ) ) { |
| 1195 |
$total_usage['prompt'] += (int) ( $turn['usage']['prompt'] ?? 0 ); |
| 1196 |
$total_usage['completion'] += (int) ( $turn['usage']['completion'] ?? 0 ); |
| 1197 |
$total_usage['total'] += (int) ( $turn['usage']['total'] ?? 0 ); |
| 1198 |
} |
| 1199 |
if ( isset( $turn['model'] ) && is_array( $turn['model'] ) ) { |
| 1200 |
$last_model = $turn['model']; |
| 1201 |
} |
| 1202 |
}; |
| 1203 |
$accrue_usage( $turn ); |
| 1204 |
|
| 1205 |
// ----------------------------------------------------------------------- |
| 1206 |
// Agentic loop — each iteration either executes tool calls or returns |
| 1207 |
// the final answer. The full ordered conversation (user query, assistant |
| 1208 |
// turns, tool results) is accumulated in $messages and re-sent each turn. |
| 1209 |
// ----------------------------------------------------------------------- |
| 1210 |
for ( $i = 0; $i < OPENSTATION_AI_SEARCH_MAX_ITERATIONS; $i++ ) { |
| 1211 |
$function_calls = is_array( $turn['function_calls'] ?? null ) ? $turn['function_calls'] : array(); |
| 1212 |
|
| 1213 |
// No tool calls in this response → final answer. |
| 1214 |
if ( empty( $function_calls ) ) { |
| 1215 |
$emit( |
| 1216 |
array( |
| 1217 |
'phase' => 'composing', |
| 1218 |
'message' => 'Putting together your answer…', |
| 1219 |
) |
| 1220 |
); |
| 1221 |
// A toolless turn with no extractable text never reaches here: |
| 1222 |
// openstation_ai_client_generate() returns |
| 1223 |
// `openstation_ai_empty_answer` for that case, handled with the |
| 1224 |
// other generation errors above. |
| 1225 |
$text = (string) ( $turn['text'] ?? '' ); |
| 1226 |
|
| 1227 |
$answer = json_decode( $text, true ); |
| 1228 |
if ( ! is_array( $answer ) ) { |
| 1229 |
return new WP_Error( 'openstation_ai_result_parse', 'Could not parse structured search answer.' ); |
| 1230 |
} |
| 1231 |
|
| 1232 |
$answer_type = isset( $answer['answer_type'] ) && in_array( $answer['answer_type'], array( 'entity', 'navigation', 'chat' ), true ) |
| 1233 |
? (string) $answer['answer_type'] |
| 1234 |
: 'chat'; |
| 1235 |
$message = isset( $answer['message'] ) ? (string) $answer['message'] : ''; |
| 1236 |
$entity_id = ( isset( $answer['entity_id'] ) && is_int( $answer['entity_id'] ) ) |
| 1237 |
? $answer['entity_id'] : null; |
| 1238 |
$entity_type = ( isset( $answer['entity_type'] ) && is_string( $answer['entity_type'] ) ) |
| 1239 |
? $answer['entity_type'] : null; |
| 1240 |
$admin_links = isset( $answer['admin_links'] ) && is_array( $answer['admin_links'] ) |
| 1241 |
? $answer['admin_links'] : null; |
| 1242 |
|
| 1243 |
$entity = null; |
| 1244 |
if ( 'entity' === $answer_type && $entity_id && $entity_type ) { |
| 1245 |
$entity = openstation_ai_search_build_entity( $entity_type, $entity_id ); |
| 1246 |
} |
| 1247 |
|
| 1248 |
$final = array( |
| 1249 |
'answer_type' => $answer_type, |
| 1250 |
'message' => $message, |
| 1251 |
'entity' => $entity, |
| 1252 |
'admin_links' => $admin_links, |
| 1253 |
'iterations' => $iterations + 1, |
| 1254 |
'exhausted' => ! $last_has_more, |
| 1255 |
'continue' => null, |
| 1256 |
'request_id' => $request_id, |
| 1257 |
); |
| 1258 |
|
| 1259 |
/** |
| 1260 |
* Final transform hook — fires right before the HTTP |
| 1261 |
* response is returned. Plugins can rewrite `message`, |
| 1262 |
* inject `admin_links`, coerce `answer_type`, etc. |
| 1263 |
* |
| 1264 |
* @param array $answer Final answer payload. |
| 1265 |
* @param array $context { query, user_id, request_id }. |
| 1266 |
*/ |
| 1267 |
$final = (array) apply_filters( |
| 1268 |
'openstation_ai_answer', |
| 1269 |
$final, |
| 1270 |
array( |
| 1271 |
'query' => $query, |
| 1272 |
'user_id' => $user_id, |
| 1273 |
'request_id' => $request_id, |
| 1274 |
) |
| 1275 |
); |
| 1276 |
|
| 1277 |
do_action( |
| 1278 |
'openstation_ai_search_completed', |
| 1279 |
array( |
| 1280 |
'query' => $query, |
| 1281 |
'user_id' => $user_id, |
| 1282 |
'request_id' => $request_id, |
| 1283 |
'answer_type' => $final['answer_type'] ?? 'chat', |
| 1284 |
'iterations' => $final['iterations'] ?? 0, |
| 1285 |
'usage' => $total_usage, |
| 1286 |
'model' => $last_model, |
| 1287 |
) |
| 1288 |
); |
| 1289 |
|
| 1290 |
return $final; |
| 1291 |
} |
| 1292 |
|
| 1293 |
// ------------------------------------------------------------------- |
| 1294 |
// Command-tool short-circuit. |
| 1295 |
// |
| 1296 |
// If the model emitted `command_<slug>`, we return immediately with |
| 1297 |
// `answer_type: 'tool_call'` — the client owns the command's `run()` |
| 1298 |
// function (lives in plugin JS) and executes it locally. We do NOT |
| 1299 |
// send anything else back to the provider this turn — would burn tokens |
| 1300 |
// for a no-op second response. |
| 1301 |
// ------------------------------------------------------------------- |
| 1302 |
$command_tool_call = null; |
| 1303 |
foreach ( $function_calls as $fc ) { |
| 1304 |
$name = (string) ( $fc['name'] ?? '' ); |
| 1305 |
if ( isset( $command_tools_by_name[ $name ] ) ) { |
| 1306 |
$raw = json_decode( $fc['arguments'] ?? '{}', true ); |
| 1307 |
$decoded = is_array( $raw ) ? $raw : array(); |
| 1308 |
$command_tool_call = array( |
| 1309 |
'slug' => $command_tools_by_name[ $name ]['slug'], |
| 1310 |
'args' => isset( $decoded['args'] ) ? (string) $decoded['args'] : '', |
| 1311 |
); |
| 1312 |
break; |
| 1313 |
} |
| 1314 |
} |
| 1315 |
if ( null !== $command_tool_call ) { |
| 1316 |
do_action( |
| 1317 |
'openstation_ai_tool_called', |
| 1318 |
array( |
| 1319 |
'tool_name' => 'command_' . $command_tool_call['slug'], |
| 1320 |
'args' => array( 'args' => $command_tool_call['args'] ), |
| 1321 |
'user_id' => $user_id, |
| 1322 |
'request_id' => $request_id, |
| 1323 |
) |
| 1324 |
); |
| 1325 |
|
| 1326 |
$final = array( |
| 1327 |
'answer_type' => 'tool_call', |
| 1328 |
'message' => '', |
| 1329 |
'entity' => null, |
| 1330 |
'admin_links' => null, |
| 1331 |
'tool' => $command_tool_call, |
| 1332 |
'iterations' => $iterations + 1, |
| 1333 |
'exhausted' => false, |
| 1334 |
'continue' => null, |
| 1335 |
'request_id' => $request_id, |
| 1336 |
); |
| 1337 |
|
| 1338 |
$final = (array) apply_filters( |
| 1339 |
'openstation_ai_answer', |
| 1340 |
$final, |
| 1341 |
array( |
| 1342 |
'query' => $query, |
| 1343 |
'user_id' => $user_id, |
| 1344 |
'request_id' => $request_id, |
| 1345 |
) |
| 1346 |
); |
| 1347 |
|
| 1348 |
do_action( |
| 1349 |
'openstation_ai_search_completed', |
| 1350 |
array( |
| 1351 |
'query' => $query, |
| 1352 |
'user_id' => $user_id, |
| 1353 |
'request_id' => $request_id, |
| 1354 |
'answer_type' => 'tool_call', |
| 1355 |
'iterations' => $final['iterations'] ?? 0, |
| 1356 |
'usage' => $total_usage, |
| 1357 |
'model' => $last_model, |
| 1358 |
) |
| 1359 |
); |
| 1360 |
|
| 1361 |
return $final; |
| 1362 |
} |
| 1363 |
|
| 1364 |
// Execute each tool call and collect results as |
| 1365 |
// `{ call_id, name, response }` — turned into FunctionResponse parts |
| 1366 |
// for the next turn by openstation_ai_tool_result_message(). |
| 1367 |
$tool_outputs = array(); |
| 1368 |
foreach ( $function_calls as $fc ) { |
| 1369 |
$tool_name = $fc['name'] ?? ''; |
| 1370 |
$call_id = $fc['call_id'] ?? ''; |
| 1371 |
|
| 1372 |
if ( ! in_array( $tool_name, $valid_tools, true ) ) { |
| 1373 |
$tool_outputs[] = array( |
| 1374 |
'call_id' => $call_id, |
| 1375 |
'name' => $tool_name, |
| 1376 |
'response' => array( 'error' => "Unknown tool '{$tool_name}'." ), |
| 1377 |
); |
| 1378 |
continue; |
| 1379 |
} |
| 1380 |
|
| 1381 |
$raw = json_decode( $fc['arguments'] ?? '{}', true ); |
| 1382 |
$args = is_array( $raw ) ? $raw : array(); |
| 1383 |
$offset = max( 0, (int) ( $args['offset'] ?? 0 ) ); |
| 1384 |
|
| 1385 |
$emit( |
| 1386 |
array( |
| 1387 |
'phase' => 'tool_call', |
| 1388 |
'tool' => $tool_name, |
| 1389 |
'message' => openstation_ai_progress_message( $tool_name ), |
| 1390 |
) |
| 1391 |
); |
| 1392 |
|
| 1393 |
do_action( |
| 1394 |
'openstation_ai_tool_called', |
| 1395 |
array( |
| 1396 |
'tool_name' => $tool_name, |
| 1397 |
'args' => $args, |
| 1398 |
'user_id' => $user_id, |
| 1399 |
'request_id' => $request_id, |
| 1400 |
) |
| 1401 |
); |
| 1402 |
|
| 1403 |
// Resolve + run the ability. execute() runs the permission_callback |
| 1404 |
// and validates input/output; a denial or bad input comes back as a |
| 1405 |
// WP_Error, which we surface to the model as a clean tool error |
| 1406 |
// (never a fatal) and report on the observability channel. |
| 1407 |
$ability = isset( $ability_by_tool[ $tool_name ] ) ? wp_get_ability( $ability_by_tool[ $tool_name ] ) : null; |
| 1408 |
if ( $ability instanceof WP_Ability ) { |
| 1409 |
// Abilities that declare no input schema (e.g. Core's |
| 1410 |
// get-*-info) reject any non-null input, so pass null when |
| 1411 |
// there's no schema; otherwise hand over the decoded args. |
| 1412 |
$input = empty( $ability->get_input_schema() ) ? null : $args; |
| 1413 |
$result = $ability->execute( $input ); |
| 1414 |
} else { |
| 1415 |
$result = new WP_Error( 'openstation_ai_unknown_ability', sprintf( 'Ability for tool "%s" is unavailable.', $tool_name ) ); |
| 1416 |
} |
| 1417 |
|
| 1418 |
if ( is_wp_error( $result ) ) { |
| 1419 |
do_action( |
| 1420 |
'openstation_ai_search_error', |
| 1421 |
array( |
| 1422 |
'stage' => 'tool_execute', |
| 1423 |
'tool_name' => $tool_name, |
| 1424 |
'error' => $result->get_error_code(), |
| 1425 |
'message' => $result->get_error_message(), |
| 1426 |
'user_id' => $user_id, |
| 1427 |
'request_id' => $request_id, |
| 1428 |
) |
| 1429 |
); |
| 1430 |
$batch = array( |
| 1431 |
'error' => $result->get_error_message(), |
| 1432 |
'error_code' => $result->get_error_code(), |
| 1433 |
); |
| 1434 |
} else { |
| 1435 |
$batch = is_array( $result ) ? $result : array( 'result' => $result ); |
| 1436 |
} |
| 1437 |
|
| 1438 |
$last_tool = $tool_name; |
| 1439 |
$last_offset = $offset; |
| 1440 |
$last_has_more = (bool) ( $batch['has_more'] ?? false ); |
| 1441 |
|
| 1442 |
/** |
| 1443 |
* Transform a tool result before it goes back to the model. |
| 1444 |
* Fires for every ability-dispatched tool (including error |
| 1445 |
* envelopes from a failed execute()). |
| 1446 |
* |
| 1447 |
* @param array $batch Tool result payload. |
| 1448 |
* @param string $tool_name Tool function name. |
| 1449 |
* @param array $args Decoded args from the call. |
| 1450 |
* @param array $context { user_id, request_id }. |
| 1451 |
*/ |
| 1452 |
$batch = (array) apply_filters( |
| 1453 |
'openstation_ai_tool_result', |
| 1454 |
$batch, |
| 1455 |
$tool_name, |
| 1456 |
$args, |
| 1457 |
array( |
| 1458 |
'user_id' => $user_id, |
| 1459 |
'request_id' => $request_id, |
| 1460 |
) |
| 1461 |
); |
| 1462 |
|
| 1463 |
$tool_outputs[] = array( |
| 1464 |
'call_id' => $call_id, |
| 1465 |
'name' => $tool_name, |
| 1466 |
'response' => $batch, |
| 1467 |
); |
| 1468 |
} |
| 1469 |
|
| 1470 |
++$iterations; |
| 1471 |
|
| 1472 |
// Next turn — append the assistant's tool-call turn and our tool |
| 1473 |
// results to the conversation, then regenerate with the full history. |
| 1474 |
$messages[] = $turn['message']; |
| 1475 |
$messages[] = openstation_ai_tool_result_message( $tool_outputs ); |
| 1476 |
|
| 1477 |
$turn = openstation_ai_client_generate( $user_id, $messages, $tools, $answer_schema, $instructions ); |
| 1478 |
|
| 1479 |
if ( is_wp_error( $turn ) ) { |
| 1480 |
return $turn; |
| 1481 |
} |
| 1482 |
$accrue_usage( $turn ); |
| 1483 |
} |
| 1484 |
|
| 1485 |
// ----------------------------------------------------------------------- |
| 1486 |
// Budget exhausted before a final answer. |
| 1487 |
// ----------------------------------------------------------------------- |
| 1488 |
$continue = null; |
| 1489 |
if ( $last_has_more ) { |
| 1490 |
$next_offset = $last_offset + OPENSTATION_AI_SEARCH_BATCH_SIZE; |
| 1491 |
// `search_comments_by_post` cannot resume — the continue payload |
| 1492 |
// carries no post_id — so fall back to plain comment search, |
| 1493 |
// keeping `tool` inside openstation_ai_search_resumable_tools(). |
| 1494 |
$resume_tool = 'search_comments_by_post' === $last_tool ? 'search_comments' : $last_tool; |
| 1495 |
$type_label = str_replace( 'search_', '', $resume_tool ) . 's'; |
| 1496 |
$continue = array( |
| 1497 |
'tool' => $resume_tool, |
| 1498 |
'entity_type' => rtrim( str_replace( 'search_', '', $resume_tool ), 's' ), |
| 1499 |
'offset' => $next_offset, |
| 1500 |
'label' => sprintf( 'Continue searching in %s (from item %d)', $type_label, $next_offset + 1 ), |
| 1501 |
); |
| 1502 |
} |
| 1503 |
|
| 1504 |
$final = array( |
| 1505 |
'answer_type' => 'chat', |
| 1506 |
'message' => 'I searched 100 items without finding a clear match. Want me to keep looking further?', |
| 1507 |
'entity' => null, |
| 1508 |
'admin_links' => null, |
| 1509 |
'iterations' => OPENSTATION_AI_SEARCH_MAX_ITERATIONS, |
| 1510 |
'exhausted' => ! $last_has_more, |
| 1511 |
'continue' => $continue, |
| 1512 |
'request_id' => $request_id, |
| 1513 |
); |
| 1514 |
|
| 1515 |
$final = (array) apply_filters( |
| 1516 |
'openstation_ai_answer', |
| 1517 |
$final, |
| 1518 |
array( |
| 1519 |
'query' => $query, |
| 1520 |
'user_id' => $user_id, |
| 1521 |
'request_id' => $request_id, |
| 1522 |
) |
| 1523 |
); |
| 1524 |
|
| 1525 |
do_action( |
| 1526 |
'openstation_ai_search_completed', |
| 1527 |
array( |
| 1528 |
'query' => $query, |
| 1529 |
'user_id' => $user_id, |
| 1530 |
'request_id' => $request_id, |
| 1531 |
'answer_type' => 'chat', |
| 1532 |
'iterations' => OPENSTATION_AI_SEARCH_MAX_ITERATIONS, |
| 1533 |
'usage' => $total_usage, |
| 1534 |
'model' => $last_model, |
| 1535 |
) |
| 1536 |
); |
| 1537 |
|
| 1538 |
return $final; |
| 1539 |
} |
| 1540 |
|
| 1541 |
/** |
| 1542 |
* Compose the final system-prompt string for an `/ai/search` call. |
| 1543 |
* |
| 1544 |
* One code path used by both the primary run and the follow-up leg — |
| 1545 |
* keeps the voice consistent across legs and removes a class of drift |
| 1546 |
* bug where the two paths's prompt-assembly drifts apart. |
| 1547 |
* |
| 1548 |
* Applies three layers in order: |
| 1549 |
* 1. `openstation_ai_system_prompt_appendix` — stacking filter; |
| 1550 |
* every plugin's return is concatenated. |
| 1551 |
* 2. Client override — `system_prompt_text` + `system_prompt_mode`. |
| 1552 |
* `append` always allowed; `replace` gated on |
| 1553 |
* `openstation_ai_system_prompt_replace_capability`. Non-permitted |
| 1554 |
* `replace` downgrades to `append` so the caller's text is |
| 1555 |
* preserved rather than dropped. |
| 1556 |
* 3. `openstation_ai_system_prompt` — final transform pass. |
| 1557 |
* |
| 1558 |
* @internal |
| 1559 |
* |
| 1560 |
* @param string $core Built-in instructions for this phase |
| 1561 |
* (agent loop / follow-up summariser). |
| 1562 |
* @param array $context { query, user_id, request_id, phase? }. |
| 1563 |
* @param array $client { text, mode } client override; either field |
| 1564 |
* empty means no override. |
| 1565 |
* @return string Composed system prompt. |
| 1566 |
*/ |
| 1567 |
function openstation_ai_compose_instructions( $core, array $context, array $client = array() ) { |
| 1568 |
$instructions = (string) $core; |
| 1569 |
$user_id = isset( $context['user_id'] ) ? (int) $context['user_id'] : 0; |
| 1570 |
|
| 1571 |
$client_text = isset( $client['text'] ) && is_string( $client['text'] ) ? $client['text'] : ''; |
| 1572 |
$client_mode = isset( $client['mode'] ) && in_array( $client['mode'], array( 'append', 'replace' ), true ) |
| 1573 |
? (string) $client['mode'] |
| 1574 |
: 'append'; |
| 1575 |
|
| 1576 |
$ctx_for_filter = $context; |
| 1577 |
$ctx_for_filter['client_override'] = '' !== $client_text ? $client_mode : null; |
| 1578 |
|
| 1579 |
/** |
| 1580 |
* Short-circuit extension — appended to the built-in instructions |
| 1581 |
* verbatim. Use this when a plugin just wants to add domain |
| 1582 |
* context (room list, product catalogue, company jargon) without |
| 1583 |
* restructuring the core rules. Fires for both the primary |
| 1584 |
* `/ai/search` run and the follow-up composed-reply leg. |
| 1585 |
* |
| 1586 |
* @param string $appendix Accumulated appendix. Default empty. |
| 1587 |
* @param array $context { query, user_id, request_id, client_override, phase? }. |
| 1588 |
*/ |
| 1589 |
$server_appendix = (string) apply_filters( 'openstation_ai_system_prompt_appendix', '', $ctx_for_filter ); |
| 1590 |
if ( '' !== $server_appendix ) { |
| 1591 |
$instructions .= "\n\n" . $server_appendix; |
| 1592 |
} |
| 1593 |
|
| 1594 |
if ( '' !== $client_text ) { |
| 1595 |
if ( 'replace' === $client_mode ) { |
| 1596 |
/** |
| 1597 |
* Capability required for a client to send |
| 1598 |
* `system_prompt: { mode: 'replace' }`. Defaults to `manage_options` |
| 1599 |
* — replacing the whole prompt can effectively hijack the |
| 1600 |
* assistant, so it's admin-only out of the box. |
| 1601 |
* |
| 1602 |
* @param string $capability Default `manage_options`. |
| 1603 |
* @param array $context |
| 1604 |
*/ |
| 1605 |
$required_cap = (string) apply_filters( |
| 1606 |
'openstation_ai_system_prompt_replace_capability', |
| 1607 |
'manage_options', |
| 1608 |
$ctx_for_filter |
| 1609 |
); |
| 1610 |
if ( '' === $required_cap || ( $user_id > 0 && user_can( $user_id, $required_cap ) ) ) { |
| 1611 |
$instructions = $client_text; |
| 1612 |
} else { |
| 1613 |
// Silently downgrade to append — preserves the caller's |
| 1614 |
// text rather than dropping it when the cap check fails. |
| 1615 |
$instructions .= "\n\n" . $client_text; |
| 1616 |
} |
| 1617 |
} else { |
| 1618 |
$instructions .= "\n\n" . $client_text; |
| 1619 |
} |
| 1620 |
} |
| 1621 |
|
| 1622 |
/** |
| 1623 |
* Final transform pass. Fires after the built-in instructions, |
| 1624 |
* server appendix, and client override have all been composed. |
| 1625 |
* |
| 1626 |
* @param string $instructions Composed system prompt. |
| 1627 |
* @param array $context |
| 1628 |
*/ |
| 1629 |
return (string) apply_filters( 'openstation_ai_system_prompt', $instructions, $ctx_for_filter ); |
| 1630 |
} |
| 1631 |
|
| 1632 |
/** |
| 1633 |
* Compose a natural-language reply describing the outcome of a |
| 1634 |
* client-dispatched command invocation. |
| 1635 |
* |
| 1636 |
* Called by the REST endpoint when the client sends `follow_up` — |
| 1637 |
* the second leg of the opt-in agentic flow triggered by |
| 1638 |
* `wp.os.ai.ask( q, { tools: 'aiCallable', followUp: true } )`. |
| 1639 |
* |
| 1640 |
* Single-turn, no tools, no structured-output schema — the model |
| 1641 |
* sees the original query + a summary of what happened and writes a |
| 1642 |
* one/two-sentence reply in the voice of the system prompt. We reuse |
| 1643 |
* the same system-prompt pipeline as the main search so plugins |
| 1644 |
* appending instructions via `openstation_ai_system_prompt_appendix` |
| 1645 |
* see consistent voice across the two legs. |
| 1646 |
* |
| 1647 |
* @param string $query Original user query. |
| 1648 |
* @param array $tool { slug, args } — what ran. |
| 1649 |
* @param array $outcome Tool result payload. Opaque — JSON-encoded |
| 1650 |
* into the model's context so it can reason |
| 1651 |
* about whatever shape the plugin returned. |
| 1652 |
* @param array $extra Same shape as `openstation_ai_run_search`'s |
| 1653 |
* `$extra` — carries user_id, request_id, |
| 1654 |
* system-prompt overrides. |
| 1655 |
* @return array|WP_Error `{ answer_type: 'chat', message, … }` or error. |
| 1656 |
*/ |
| 1657 |
function openstation_ai_run_followup( $query, array $tool, array $outcome, array $extra = array() ) { |
| 1658 |
$user_id = isset( $extra['user_id'] ) ? (int) $extra['user_id'] : get_current_user_id(); |
| 1659 |
$request_id = isset( $extra['request_id'] ) && is_string( $extra['request_id'] ) && '' !== $extra['request_id'] |
| 1660 |
? (string) $extra['request_id'] |
| 1661 |
: ( function_exists( 'wp_generate_uuid4' ) ? wp_generate_uuid4() : uniqid( 'openstation_ai_', true ) ); |
| 1662 |
|
| 1663 |
do_action( |
| 1664 |
'openstation_ai_search_started', |
| 1665 |
array( |
| 1666 |
'query' => $query, |
| 1667 |
'user_id' => $user_id, |
| 1668 |
'request_id' => $request_id, |
| 1669 |
'phase' => 'follow_up', |
| 1670 |
) |
| 1671 |
); |
| 1672 |
|
| 1673 |
// Mirror the main search's system-prompt layering so voice stays |
| 1674 |
// consistent between the two legs. We build a simpler core- |
| 1675 |
// instructions block — no tool guidance, since this run has none. |
| 1676 |
$instructions = ' |
| 1677 |
You are the same friendly WordPress assistant that just dispatched a command on behalf of the user. You now have the result of that command. |
| 1678 |
|
| 1679 |
Write a SHORT reply (one or two sentences, first person, warm and conversational) describing what happened. Match the voice the site owner set in their system prompt — do not restart small talk, just confirm what you did. |
| 1680 |
|
| 1681 |
Rules: |
| 1682 |
- If the outcome looks successful, confirm plainly. Example: "Done — your office light is on now." |
| 1683 |
- If the outcome looks like an error (has an `error` field, a failure message, or obviously negative content), apologise briefly and paraphrase what went wrong. Do not invent details the outcome did not include. |
| 1684 |
- Do NOT recommend the user try something else unless the outcome explicitly suggests it. |
| 1685 |
- Do NOT describe the tool mechanism ("I called command_turn_light") — the user only cares about the real-world effect. |
| 1686 |
'; |
| 1687 |
|
| 1688 |
$system_prompt_text = isset( $extra['system_prompt_text'] ) && is_string( $extra['system_prompt_text'] ) ? $extra['system_prompt_text'] : ''; |
| 1689 |
$system_prompt_mode = isset( $extra['system_prompt_mode'] ) && in_array( $extra['system_prompt_mode'], array( 'append', 'replace' ), true ) |
| 1690 |
? (string) $extra['system_prompt_mode'] |
| 1691 |
: 'append'; |
| 1692 |
|
| 1693 |
$instructions = openstation_ai_compose_instructions( |
| 1694 |
$instructions, |
| 1695 |
array( |
| 1696 |
'query' => $query, |
| 1697 |
'user_id' => $user_id, |
| 1698 |
'request_id' => $request_id, |
| 1699 |
'phase' => 'follow_up', |
| 1700 |
), |
| 1701 |
array( |
| 1702 |
'text' => $system_prompt_text, |
| 1703 |
'mode' => $system_prompt_mode, |
| 1704 |
) |
| 1705 |
); |
| 1706 |
|
| 1707 |
$slug = isset( $tool['slug'] ) ? (string) $tool['slug'] : ''; |
| 1708 |
$tool_args = isset( $tool['args'] ) ? (string) $tool['args'] : ''; |
| 1709 |
$outcome_json = wp_json_encode( $outcome ); |
| 1710 |
if ( ! is_string( $outcome_json ) ) { |
| 1711 |
$outcome_json = '""'; |
| 1712 |
} |
| 1713 |
|
| 1714 |
// Bound the outcome payload so a malicious or buggy plugin that |
| 1715 |
// returns a 5MB blob can't inflate the provider token usage without |
| 1716 |
// bound. 4 KB is enough for a status string, a small result list, |
| 1717 |
// or a short error envelope — anything bigger gets truncated with |
| 1718 |
// a marker so the model knows the tail was dropped. |
| 1719 |
// |
| 1720 |
// `mb_*` variants so truncation on a multibyte boundary |
| 1721 |
// (Japanese / emoji / accented UTF-8) can't produce invalid JSON |
| 1722 |
// that the provider would reject. Falls back to byte-level substr when |
| 1723 |
// mbstring is unavailable (rare but possible on minimal PHP |
| 1724 |
// builds). |
| 1725 |
$max_outcome_len = (int) apply_filters( 'openstation_ai_followup_outcome_max_chars', 4000 ); |
| 1726 |
if ( $max_outcome_len > 0 ) { |
| 1727 |
$has_mbstring = function_exists( 'mb_strlen' ) && function_exists( 'mb_substr' ); |
| 1728 |
$current_len = $has_mbstring |
| 1729 |
? mb_strlen( $outcome_json, 'UTF-8' ) |
| 1730 |
: strlen( $outcome_json ); |
| 1731 |
if ( $current_len > $max_outcome_len ) { |
| 1732 |
$outcome_json = $has_mbstring |
| 1733 |
? mb_substr( $outcome_json, 0, $max_outcome_len, 'UTF-8' ) |
| 1734 |
: substr( $outcome_json, 0, $max_outcome_len ); |
| 1735 |
$outcome_json .= '…[truncated]'; |
| 1736 |
} |
| 1737 |
} |
| 1738 |
|
| 1739 |
$user_message = sprintf( |
| 1740 |
"Original user request: %s\n\nYou invoked the command `%s` with args `%s`. It returned:\n\n```json\n%s\n```\n\nWrite your short confirmation / apology now.", |
| 1741 |
$query, |
| 1742 |
$slug, |
| 1743 |
$tool_args, |
| 1744 |
$outcome_json |
| 1745 |
); |
| 1746 |
|
| 1747 |
do_action( |
| 1748 |
'openstation_ai_tool_called', |
| 1749 |
array( |
| 1750 |
'tool_name' => 'followup_summarise', |
| 1751 |
'args' => array( |
| 1752 |
'slug' => $slug, |
| 1753 |
'tool_args' => $tool_args, |
| 1754 |
), |
| 1755 |
'user_id' => $user_id, |
| 1756 |
'request_id' => $request_id, |
| 1757 |
) |
| 1758 |
); |
| 1759 |
|
| 1760 |
$turn = openstation_ai_client_generate( |
| 1761 |
$user_id, |
| 1762 |
array( openstation_ai_user_text_message( $user_message ) ), |
| 1763 |
array(), // no tools — we want a plain reply |
| 1764 |
null, // no JSON schema — free-form text |
| 1765 |
$instructions |
| 1766 |
); |
| 1767 |
|
| 1768 |
// `openstation_ai_empty_answer` is the one generation error this path |
| 1769 |
// deliberately absorbs: the command DID run, so a text-less summary turn |
| 1770 |
// degrades to the generic confirmation below instead of surfacing as a |
| 1771 |
// failure of the command itself. |
| 1772 |
$empty_answer = is_wp_error( $turn ) && 'openstation_ai_empty_answer' === $turn->get_error_code(); |
| 1773 |
|
| 1774 |
if ( is_wp_error( $turn ) && ! $empty_answer ) { |
| 1775 |
do_action( |
| 1776 |
'openstation_ai_search_error', |
| 1777 |
array( |
| 1778 |
'code' => $turn->get_error_code(), |
| 1779 |
'message' => $turn->get_error_message(), |
| 1780 |
'data' => $turn->get_error_data(), |
| 1781 |
'user_id' => $user_id, |
| 1782 |
'request_id' => $request_id, |
| 1783 |
'phase' => 'follow_up', |
| 1784 |
) |
| 1785 |
); |
| 1786 |
return $turn; |
| 1787 |
} |
| 1788 |
|
| 1789 |
$text = $empty_answer ? null : ( $turn['text'] ?? null ); |
| 1790 |
$fallback = false; |
| 1791 |
if ( ! is_string( $text ) || '' === trim( $text ) ) { |
| 1792 |
// Graceful degrade — if the provider returned nothing usable, fall |
| 1793 |
// back to a generic confirmation so the caller always has a |
| 1794 |
// message to show. Better than returning an error and losing |
| 1795 |
// the fact that the command *did* run. We flag the degrade so |
| 1796 |
// observability subscribers can distinguish a deliberate |
| 1797 |
// "Done." from a silently-degraded one. |
| 1798 |
$text = 'Done.'; |
| 1799 |
$fallback = true; |
| 1800 |
} |
| 1801 |
|
| 1802 |
$final = array( |
| 1803 |
'answer_type' => 'chat', |
| 1804 |
'message' => trim( $text ), |
| 1805 |
'entity' => null, |
| 1806 |
'admin_links' => null, |
| 1807 |
'iterations' => 1, |
| 1808 |
'exhausted' => false, |
| 1809 |
'continue' => null, |
| 1810 |
'request_id' => $request_id, |
| 1811 |
'tool' => array( |
| 1812 |
'slug' => $slug, |
| 1813 |
'args' => $tool_args, |
| 1814 |
), |
| 1815 |
'fallback' => $fallback, |
| 1816 |
); |
| 1817 |
|
| 1818 |
$final = (array) apply_filters( |
| 1819 |
'openstation_ai_answer', |
| 1820 |
$final, |
| 1821 |
array( |
| 1822 |
'query' => $query, |
| 1823 |
'user_id' => $user_id, |
| 1824 |
'request_id' => $request_id, |
| 1825 |
'phase' => 'follow_up', |
| 1826 |
) |
| 1827 |
); |
| 1828 |
|
| 1829 |
do_action( |
| 1830 |
'openstation_ai_search_completed', |
| 1831 |
array( |
| 1832 |
'query' => $query, |
| 1833 |
'user_id' => $user_id, |
| 1834 |
'request_id' => $request_id, |
| 1835 |
'answer_type' => 'chat', |
| 1836 |
'iterations' => 1, |
| 1837 |
'phase' => 'follow_up', |
| 1838 |
'fallback' => $fallback, |
| 1839 |
) |
| 1840 |
); |
| 1841 |
|
| 1842 |
return $final; |
| 1843 |
} |
| 1844 |
|
| 1845 |
// --------------------------------------------------------------------------- |
| 1846 |
// REST endpoint |
| 1847 |
// --------------------------------------------------------------------------- |
| 1848 |
|
| 1849 |
/** |
| 1850 |
* Registers the AI search REST route. |
| 1851 |
*/ |
| 1852 |
function openstation_register_ai_search_rest_route() { |
| 1853 |
register_rest_route( |
| 1854 |
'desktop-mode/v1', |
| 1855 |
'/ai/search', |
| 1856 |
array( |
| 1857 |
'methods' => WP_REST_Server::CREATABLE, |
| 1858 |
'callback' => 'openstation_rest_ai_search', |
| 1859 |
'permission_callback' => 'openstation_rest_ai_search_permission', |
| 1860 |
'args' => array( |
| 1861 |
'query' => array( |
| 1862 |
'required' => true, |
| 1863 |
'type' => 'string', |
| 1864 |
'sanitize_callback' => 'sanitize_text_field', |
| 1865 |
'validate_callback' => static function ( $v ) { |
| 1866 |
return is_string( $v ) && trim( $v ) !== ''; |
| 1867 |
}, |
| 1868 |
), |
| 1869 |
// `resume_tool` + `start_offset` are only set when the |
| 1870 |
// client is continuing a previous search from the `continue` |
| 1871 |
// object returned by an exhausted run. Fresh searches leave |
| 1872 |
// both unset — the agent picks tools from query semantics. |
| 1873 |
'resume_tool' => array( |
| 1874 |
'required' => false, |
| 1875 |
'type' => array( 'string', 'null' ), |
| 1876 |
'default' => null, |
| 1877 |
'sanitize_callback' => static function ( $v ) { |
| 1878 |
return in_array( $v, openstation_ai_search_resumable_tools(), true ) |
| 1879 |
? $v : null; |
| 1880 |
}, |
| 1881 |
), |
| 1882 |
'start_offset' => array( |
| 1883 |
'required' => false, |
| 1884 |
'type' => 'integer', |
| 1885 |
'default' => 0, |
| 1886 |
'sanitize_callback' => 'absint', |
| 1887 |
), |
| 1888 |
// Client-harvested slash-commands the user's plugins have |
| 1889 |
// opted in as AI tools. Each entry: { slug, label, description?, hint? }. |
| 1890 |
// The slug is namespaced server-side as `command_<slug>` |
| 1891 |
// and any tool_call the model emits with that name short- |
| 1892 |
// circuits back to the client for local dispatch. |
| 1893 |
'command_tools' => array( |
| 1894 |
'required' => false, |
| 1895 |
'type' => 'array', |
| 1896 |
'default' => array(), |
| 1897 |
'items' => array( |
| 1898 |
'type' => 'object', |
| 1899 |
'properties' => array( |
| 1900 |
'slug' => array( 'type' => 'string' ), |
| 1901 |
'label' => array( 'type' => 'string' ), |
| 1902 |
'description' => array( 'type' => 'string' ), |
| 1903 |
'hint' => array( 'type' => 'string' ), |
| 1904 |
), |
| 1905 |
), |
| 1906 |
), |
| 1907 |
// Free-form system-prompt override. |
| 1908 |
// mode: 'append' → concatenated onto the built-in prompt (safe for everyone) |
| 1909 |
// mode: 'replace' → replaces the built-in prompt entirely, gated on |
| 1910 |
// `openstation_ai_system_prompt_replace_capability` |
| 1911 |
// (default `manage_options`). |
| 1912 |
'system_prompt_text' => array( |
| 1913 |
'required' => false, |
| 1914 |
'type' => 'string', |
| 1915 |
'default' => '', |
| 1916 |
), |
| 1917 |
'system_prompt_mode' => array( |
| 1918 |
'required' => false, |
| 1919 |
'type' => 'string', |
| 1920 |
'default' => 'append', |
| 1921 |
'sanitize_callback' => static function ( $v ) { |
| 1922 |
return in_array( $v, array( 'append', 'replace' ), true ) ? $v : 'append'; |
| 1923 |
}, |
| 1924 |
), |
| 1925 |
// Follow-up leg of the agentic command-dispatch flow. |
| 1926 |
// When present, the endpoint SKIPS the agent loop entirely |
| 1927 |
// and runs a single-turn "summarise this outcome" call |
| 1928 |
// through the provider instead. The client sends this on the |
| 1929 |
// second leg of `ask( q, { tools: 'aiCallable', followUp: true } )`. |
| 1930 |
'follow_up' => array( |
| 1931 |
'required' => false, |
| 1932 |
'type' => array( 'object', 'null' ), |
| 1933 |
'default' => null, |
| 1934 |
), |
| 1935 |
), |
| 1936 |
) |
| 1937 |
); |
| 1938 |
} |
| 1939 |
add_action( 'rest_api_init', 'openstation_register_ai_search_rest_route' ); |
| 1940 |
|
| 1941 |
/** |
| 1942 |
* Permission callback. |
| 1943 |
* |
| 1944 |
* @return bool|WP_Error |
| 1945 |
*/ |
| 1946 |
function openstation_rest_ai_search_permission() { |
| 1947 |
if ( ! is_user_logged_in() || ! current_user_can( 'read' ) ) { |
| 1948 |
return new WP_Error( |
| 1949 |
'openstation_ai_forbidden', |
| 1950 |
'You must be logged in to use the AI assistant.', |
| 1951 |
array( 'status' => 403 ) |
| 1952 |
); |
| 1953 |
} |
| 1954 |
if ( ! openstation_ai_is_available() ) { |
| 1955 |
return new WP_Error( |
| 1956 |
'openstation_ai_unavailable', |
| 1957 |
'The AI assistant is unavailable on this site.', |
| 1958 |
array( 'status' => 503 ) |
| 1959 |
); |
| 1960 |
} |
| 1961 |
if ( ! openstation_ai_is_enabled( get_current_user_id() ) ) { |
| 1962 |
return new WP_Error( |
| 1963 |
'openstation_ai_disabled', |
| 1964 |
'The AI assistant is turned off. Enable it in OpenStation Preferences → Features.', |
| 1965 |
array( 'status' => 403 ) |
| 1966 |
); |
| 1967 |
} |
| 1968 |
return true; |
| 1969 |
} |
| 1970 |
|
| 1971 |
/** |
| 1972 |
* POST /desktop-mode/v1/ai/search |
| 1973 |
* |
| 1974 |
* @param WP_REST_Request $request |
| 1975 |
* @return WP_REST_Response|WP_Error |
| 1976 |
*/ |
| 1977 |
function openstation_rest_ai_search( WP_REST_Request $request ) { |
| 1978 |
$user_id = get_current_user_id(); |
| 1979 |
$query = $request->get_param( 'query' ); |
| 1980 |
$resume_tool = $request->get_param( 'resume_tool' ); |
| 1981 |
$start_offset = $request->get_param( 'start_offset' ); |
| 1982 |
|
| 1983 |
$command_tools = $request->get_param( 'command_tools' ); |
| 1984 |
if ( ! is_array( $command_tools ) ) { |
| 1985 |
$command_tools = array(); |
| 1986 |
} |
| 1987 |
|
| 1988 |
$extra = array( |
| 1989 |
'user_id' => $user_id, |
| 1990 |
'request_id' => function_exists( 'wp_generate_uuid4' ) ? wp_generate_uuid4() : uniqid( 'openstation_ai_', true ), |
| 1991 |
'command_tools' => $command_tools, |
| 1992 |
'system_prompt_text' => (string) $request->get_param( 'system_prompt_text' ), |
| 1993 |
'system_prompt_mode' => (string) $request->get_param( 'system_prompt_mode' ), |
| 1994 |
); |
| 1995 |
|
| 1996 |
/** |
| 1997 |
* Last-mile filter on the whole `/ai/search` request bundle. |
| 1998 |
* Plugins get one hook to rewrite query, swap tools, or inject |
| 1999 |
* metadata before the agent loop starts. |
| 2000 |
* |
| 2001 |
* @param array $extra Extended context (mutable). |
| 2002 |
* @param array $core Core request params { query, resume_tool, start_offset }. |
| 2003 |
*/ |
| 2004 |
$extra = (array) apply_filters( |
| 2005 |
'openstation_ai_request', |
| 2006 |
$extra, |
| 2007 |
array( |
| 2008 |
'query' => $query, |
| 2009 |
'resume_tool' => $resume_tool, |
| 2010 |
'start_offset' => $start_offset, |
| 2011 |
) |
| 2012 |
); |
| 2013 |
|
| 2014 |
// Follow-up leg — skip the agent loop, summarise the tool outcome. |
| 2015 |
$follow_up = $request->get_param( 'follow_up' ); |
| 2016 |
if ( is_array( $follow_up ) && isset( $follow_up['tool'] ) && is_array( $follow_up['tool'] ) ) { |
| 2017 |
$tool = $follow_up['tool']; |
| 2018 |
$outcome = isset( $follow_up['result'] ) |
| 2019 |
? ( is_array( $follow_up['result'] ) ? $follow_up['result'] : array( 'value' => $follow_up['result'] ) ) |
| 2020 |
: array(); |
| 2021 |
$result = openstation_ai_run_followup( $query, $tool, $outcome, $extra ); |
| 2022 |
} else { |
| 2023 |
$result = openstation_ai_run_search( $query, $resume_tool, $start_offset, null, $extra ); |
| 2024 |
} |
| 2025 |
|
| 2026 |
if ( is_wp_error( $result ) ) { |
| 2027 |
$request_id = isset( $extra['request_id'] ) ? (string) $extra['request_id'] : ''; |
| 2028 |
do_action( |
| 2029 |
'openstation_ai_search_error', |
| 2030 |
array( |
| 2031 |
'code' => $result->get_error_code(), |
| 2032 |
'message' => $result->get_error_message(), |
| 2033 |
'data' => $result->get_error_data(), |
| 2034 |
'user_id' => $user_id, |
| 2035 |
'request_id' => $request_id, |
| 2036 |
) |
| 2037 |
); |
| 2038 |
return $result; |
| 2039 |
} |
| 2040 |
|
| 2041 |
return rest_ensure_response( $result ); |
| 2042 |
} |
| 2043 |
|
| 2044 |
// --------------------------------------------------------------------------- |
| 2045 |
// Tool: search_wporg_plugins — uses core's plugins_api() which queries |
| 2046 |
// the official WordPress.org repository. Results are cached in a |
| 2047 |
// 10-minute transient per query so repeated asks don't hammer w.org. |
| 2048 |
// --------------------------------------------------------------------------- |
| 2049 |
|
| 2050 |
/** |
| 2051 |
* Search the WordPress.org plugin directory. |
| 2052 |
* |
| 2053 |
* @param string $query Search terms. |
| 2054 |
* @return array Tool result payload ready for the model. |
| 2055 |
*/ |
| 2056 |
function openstation_ai_fetch_wporg_plugins( $query ) { |
| 2057 |
$query = trim( (string) $query ); |
| 2058 |
if ( '' === $query ) { |
| 2059 |
return array( |
| 2060 |
'tool' => 'search_wporg_plugins', |
| 2061 |
'query' => '', |
| 2062 |
'results' => array(), |
| 2063 |
'count' => 0, |
| 2064 |
'error' => 'No search query provided.', |
| 2065 |
); |
| 2066 |
} |
| 2067 |
|
| 2068 |
// Transient cache to protect the w.org API from repeated queries |
| 2069 |
// within the same conversation. |
| 2070 |
$cache_key = 'openstation_ai_plugins_' . md5( strtolower( $query ) ); |
| 2071 |
$cached = get_transient( $cache_key ); |
| 2072 |
if ( is_array( $cached ) ) { |
| 2073 |
return $cached; |
| 2074 |
} |
| 2075 |
|
| 2076 |
if ( ! function_exists( 'plugins_api' ) ) { |
| 2077 |
require_once ABSPATH . 'wp-admin/includes/plugin-install.php'; |
| 2078 |
} |
| 2079 |
|
| 2080 |
$api = plugins_api( |
| 2081 |
'query_plugins', |
| 2082 |
array( |
| 2083 |
'search' => $query, |
| 2084 |
'per_page' => 10, |
| 2085 |
'fields' => array( |
| 2086 |
'short_description' => true, |
| 2087 |
'description' => false, |
| 2088 |
'sections' => false, |
| 2089 |
'requires' => true, |
| 2090 |
'tested' => true, |
| 2091 |
'rating' => true, |
| 2092 |
'ratings' => false, |
| 2093 |
'downloaded' => false, |
| 2094 |
'downloadlink' => false, |
| 2095 |
'last_updated' => true, |
| 2096 |
'added' => false, |
| 2097 |
'tags' => false, |
| 2098 |
'compatibility' => false, |
| 2099 |
'homepage' => true, |
| 2100 |
'versions' => false, |
| 2101 |
'donate_link' => false, |
| 2102 |
'reviews' => false, |
| 2103 |
'banners' => false, |
| 2104 |
'icons' => true, |
| 2105 |
'active_installs' => true, |
| 2106 |
'group' => false, |
| 2107 |
'contributors' => false, |
| 2108 |
), |
| 2109 |
) |
| 2110 |
); |
| 2111 |
|
| 2112 |
if ( is_wp_error( $api ) ) { |
| 2113 |
return array( |
| 2114 |
'tool' => 'search_wporg_plugins', |
| 2115 |
'query' => $query, |
| 2116 |
'results' => array(), |
| 2117 |
'count' => 0, |
| 2118 |
'error' => $api->get_error_message(), |
| 2119 |
); |
| 2120 |
} |
| 2121 |
|
| 2122 |
$results = array(); |
| 2123 |
$plugins = isset( $api->plugins ) && is_array( $api->plugins ) ? $api->plugins : array(); |
| 2124 |
foreach ( $plugins as $p ) { |
| 2125 |
// Normalise — plugins_api sometimes returns arrays, sometimes objects. |
| 2126 |
$p = (array) $p; |
| 2127 |
|
| 2128 |
$slug = isset( $p['slug'] ) ? (string) $p['slug'] : ''; |
| 2129 |
if ( '' === $slug ) { |
| 2130 |
continue; |
| 2131 |
} |
| 2132 |
|
| 2133 |
$icon = ''; |
| 2134 |
$icons = isset( $p['icons'] ) && is_array( $p['icons'] ) ? $p['icons'] : array(); |
| 2135 |
if ( isset( $icons['1x'] ) ) { |
| 2136 |
$icon = (string) $icons['1x']; |
| 2137 |
} elseif ( isset( $icons['default'] ) ) { |
| 2138 |
$icon = (string) $icons['default']; |
| 2139 |
} elseif ( isset( $icons['svg'] ) ) { |
| 2140 |
$icon = (string) $icons['svg']; |
| 2141 |
} |
| 2142 |
|
| 2143 |
// Admin URL that opens the plugin-information thickbox. Includes |
| 2144 |
// both &plugin=slug and the TB_iframe params so clicking it in |
| 2145 |
// wp-admin behaves like a native "More details" link. |
| 2146 |
$install_admin_url = admin_url( |
| 2147 |
'plugin-install.php?tab=plugin-information&plugin=' . rawurlencode( $slug ) |
| 2148 |
. '&TB_iframe=true&width=772&height=745' |
| 2149 |
); |
| 2150 |
|
| 2151 |
$results[] = array( |
| 2152 |
'name' => wp_strip_all_tags( $p['name'] ?? '' ), |
| 2153 |
'slug' => $slug, |
| 2154 |
'short_description' => wp_strip_all_tags( $p['short_description'] ?? '' ), |
| 2155 |
'version' => (string) ( $p['version'] ?? '' ), |
| 2156 |
'author' => wp_strip_all_tags( $p['author'] ?? '' ), |
| 2157 |
'rating' => (int) ( $p['rating'] ?? 0 ), // 0-100 |
| 2158 |
'num_ratings' => (int) ( $p['num_ratings'] ?? 0 ), |
| 2159 |
'active_installs' => (int) ( $p['active_installs'] ?? 0 ), |
| 2160 |
'last_updated' => (string) ( $p['last_updated'] ?? '' ), |
| 2161 |
'requires' => (string) ( $p['requires'] ?? '' ), |
| 2162 |
'tested' => (string) ( $p['tested'] ?? '' ), |
| 2163 |
'homepage' => esc_url_raw( $p['homepage'] ?? '' ), |
| 2164 |
'wporg_url' => 'https://wordpress.org/plugins/' . $slug . '/', |
| 2165 |
'install_admin_url' => $install_admin_url, |
| 2166 |
'icon' => esc_url_raw( $icon ), |
| 2167 |
); |
| 2168 |
} |
| 2169 |
|
| 2170 |
$payload = array( |
| 2171 |
'tool' => 'search_wporg_plugins', |
| 2172 |
'query' => $query, |
| 2173 |
'results' => $results, |
| 2174 |
'count' => count( $results ), |
| 2175 |
); |
| 2176 |
|
| 2177 |
set_transient( $cache_key, $payload, 10 * MINUTE_IN_SECONDS ); |
| 2178 |
|
| 2179 |
return $payload; |
| 2180 |
} |
| 2181 |
|
| 2182 |
// --------------------------------------------------------------------------- |
| 2183 |
// Tool: get_php_error_log — reads the tail of the site's error log. |
| 2184 |
// Admin-only; the capability check is performed in the dispatcher |
| 2185 |
// BEFORE this function runs, so by the time we get here the caller is |
| 2186 |
// known to hold manage_options. |
| 2187 |
// --------------------------------------------------------------------------- |
| 2188 |
|
| 2189 |
/** |
| 2190 |
* Read and parse the tail of the site's PHP error log. |
| 2191 |
* |
| 2192 |
* Tries WP_CONTENT_DIR/debug.log first (populated by WP_DEBUG_LOG), then |
| 2193 |
* falls back to the PHP ini `error_log` directive. If neither points at |
| 2194 |
* a readable file the tool reports log_available=false rather than |
| 2195 |
* throwing. |
| 2196 |
* |
| 2197 |
* @param int $lines Number of lines to return (clamped 1-500 by caller). |
| 2198 |
* @return array |
| 2199 |
*/ |
| 2200 |
function openstation_ai_fetch_error_log( $lines = 50 ) { |
| 2201 |
$candidates = array(); |
| 2202 |
if ( defined( 'WP_CONTENT_DIR' ) ) { |
| 2203 |
$candidates[] = WP_CONTENT_DIR . '/debug.log'; |
| 2204 |
} |
| 2205 |
$ini_log = (string) ini_get( 'error_log' ); |
| 2206 |
if ( '' !== $ini_log && 'syslog' !== $ini_log ) { |
| 2207 |
$candidates[] = $ini_log; |
| 2208 |
} |
| 2209 |
|
| 2210 |
/** |
| 2211 |
* Filter the list of log-file paths to probe in order. Plugins that |
| 2212 |
* redirect errors somewhere non-standard can add their path here. |
| 2213 |
* |
| 2214 |
* @param string[] $candidates File paths, in probe order. |
| 2215 |
*/ |
| 2216 |
$candidates = (array) apply_filters( 'openstation_ai_error_log_candidates', $candidates ); |
| 2217 |
|
| 2218 |
$log_path = ''; |
| 2219 |
foreach ( $candidates as $path ) { |
| 2220 |
if ( is_string( $path ) && is_file( $path ) && is_readable( $path ) ) { |
| 2221 |
$log_path = $path; |
| 2222 |
break; |
| 2223 |
} |
| 2224 |
} |
| 2225 |
|
| 2226 |
if ( '' === $log_path ) { |
| 2227 |
return array( |
| 2228 |
'tool' => 'get_php_error_log', |
| 2229 |
'log_available' => false, |
| 2230 |
'message' => 'No readable error log found. Enable WP_DEBUG_LOG in wp-config.php or set php_value error_log.', |
| 2231 |
'checked_paths' => array_values( $candidates ), |
| 2232 |
'entries' => array(), |
| 2233 |
'count' => 0, |
| 2234 |
); |
| 2235 |
} |
| 2236 |
|
| 2237 |
$tail = openstation_ai_tail_file( $log_path, $lines ); |
| 2238 |
|
| 2239 |
$entries = array(); |
| 2240 |
foreach ( $tail as $line ) { |
| 2241 |
$line = trim( $line ); |
| 2242 |
if ( '' === $line ) { |
| 2243 |
continue; |
| 2244 |
} |
| 2245 |
$entries[] = openstation_ai_parse_log_line( $line ); |
| 2246 |
} |
| 2247 |
|
| 2248 |
return array( |
| 2249 |
'tool' => 'get_php_error_log', |
| 2250 |
'log_available' => true, |
| 2251 |
'source' => $log_path, |
| 2252 |
'entries' => $entries, |
| 2253 |
'count' => count( $entries ), |
| 2254 |
); |
| 2255 |
} |
| 2256 |
|
| 2257 |
/** |
| 2258 |
* Parse a PHP error_log line into { timestamp, level, message }. |
| 2259 |
* |
| 2260 |
* PHP's default format is `[<date>] <prefix>: <message>` where the |
| 2261 |
* prefix is usually "PHP Fatal error", "PHP Warning", etc. Falls back |
| 2262 |
* to a raw line when the format doesn't match. |
| 2263 |
* |
| 2264 |
* @param string $line |
| 2265 |
* @return array |
| 2266 |
*/ |
| 2267 |
function openstation_ai_parse_log_line( $line ) { |
| 2268 |
// Cap individual messages so a runaway stack trace doesn't balloon |
| 2269 |
// the payload sent to the provider. |
| 2270 |
$line = mb_substr( $line, 0, 600 ); |
| 2271 |
|
| 2272 |
$entry = array( |
| 2273 |
'timestamp' => '', |
| 2274 |
'level' => 'Log', |
| 2275 |
'message' => $line, |
| 2276 |
); |
| 2277 |
|
| 2278 |
// [21-Apr-2026 10:30:22 UTC] PHP Fatal error: Uncaught Error: … |
| 2279 |
if ( preg_match( '/^\[([^\]]+)\]\s*(.*)$/', $line, $m ) ) { |
| 2280 |
$entry['timestamp'] = $m[1]; |
| 2281 |
$entry['message'] = $m[2]; |
| 2282 |
} |
| 2283 |
|
| 2284 |
if ( preg_match( '/^(PHP (?:Fatal error|Parse error|Warning|Notice|Deprecated|Strict|Recoverable fatal error))/i', $entry['message'], $lm ) ) { |
| 2285 |
$entry['level'] = $lm[1]; |
| 2286 |
$entry['message'] = trim( substr( $entry['message'], strlen( $lm[1] ) ), ":\t " ); |
| 2287 |
} |
| 2288 |
|
| 2289 |
return $entry; |
| 2290 |
} |
| 2291 |
|
| 2292 |
/** |
| 2293 |
* Return the last $lines of a file. Loads the file via WP_Filesystem |
| 2294 |
* (the only file-read API allowed for wp.org-hosted plugins) and |
| 2295 |
* slices off the trailing N+1 entries. Realistic error logs sit |
| 2296 |
* in the kilobyte range when admins look at them; if a site routinely |
| 2297 |
* lets logs grow into tens of MB, that's the symptom, not this read. |
| 2298 |
* |
| 2299 |
* @param string $path Absolute path to the file. |
| 2300 |
* @param int $lines |
| 2301 |
* @return string[] Lines in original order (oldest first). |
| 2302 |
*/ |
| 2303 |
function openstation_ai_tail_file( $path, $lines ) { |
| 2304 |
if ( ! function_exists( 'WP_Filesystem' ) ) { |
| 2305 |
require_once ABSPATH . 'wp-admin/includes/file.php'; |
| 2306 |
} |
| 2307 |
WP_Filesystem(); |
| 2308 |
global $wp_filesystem; |
| 2309 |
if ( ! $wp_filesystem || ! $wp_filesystem->exists( $path ) ) { |
| 2310 |
return array(); |
| 2311 |
} |
| 2312 |
|
| 2313 |
$contents = $wp_filesystem->get_contents( $path ); |
| 2314 |
if ( false === $contents || '' === $contents ) { |
| 2315 |
return array(); |
| 2316 |
} |
| 2317 |
|
| 2318 |
$all = preg_split( '/\r?\n/', $contents ); |
| 2319 |
if ( ! is_array( $all ) ) { |
| 2320 |
return array(); |
| 2321 |
} |
| 2322 |
|
| 2323 |
return array_slice( $all, -1 * ( $lines + 1 ) ); |
| 2324 |
} |
| 2325 |
|
| 2326 |
// --------------------------------------------------------------------------- |
| 2327 |
// Streaming endpoint (Server-Sent Events) |
| 2328 |
// |
| 2329 |
// EventSource can't send POST or custom headers, so we ride admin-ajax.php |
| 2330 |
// which handles cookie-based auth natively. The nonce goes in the URL. |
| 2331 |
// Output buffering is forcibly disabled and every emit is flushed so the |
| 2332 |
// browser receives progress ticks in real time. |
| 2333 |
// --------------------------------------------------------------------------- |
| 2334 |
|
| 2335 |
/** |
| 2336 |
* Admin-ajax handler for the streaming search endpoint. |
| 2337 |
* |
| 2338 |
* URL: /wp-admin/admin-ajax.php?action=openstation_ai_search_stream |
| 2339 |
* &nonce=<rest_nonce> |
| 2340 |
* &query=<user question> |
| 2341 |
* &resume_tool=<search_posts|…> (optional) |
| 2342 |
* &start_offset=<int> (optional) |
| 2343 |
* |
| 2344 |
* Emits SSE events: |
| 2345 |
* data: { "event": "progress", "phase": "tool_call", "message": "…" } |
| 2346 |
* data: { "event": "done", "result": { … } } |
| 2347 |
* data: { "event": "error", "message": "…" } |
| 2348 |
*/ |
| 2349 |
function openstation_ai_ajax_search_stream() { |
| 2350 |
$nonce = isset( $_GET['nonce'] ) ? sanitize_text_field( wp_unslash( $_GET['nonce'] ) ) : ''; |
| 2351 |
if ( ! wp_verify_nonce( $nonce, 'wp_rest' ) ) { |
| 2352 |
status_header( 403 ); |
| 2353 |
exit; |
| 2354 |
} |
| 2355 |
if ( ! is_user_logged_in() || ! current_user_can( 'read' ) ) { |
| 2356 |
status_header( 403 ); |
| 2357 |
exit; |
| 2358 |
} |
| 2359 |
$user_id = get_current_user_id(); |
| 2360 |
if ( ! openstation_ai_is_available() ) { |
| 2361 |
status_header( 503 ); |
| 2362 |
exit; |
| 2363 |
} |
| 2364 |
if ( ! openstation_ai_is_enabled( $user_id ) ) { |
| 2365 |
status_header( 403 ); |
| 2366 |
exit; |
| 2367 |
} |
| 2368 |
|
| 2369 |
$query = isset( $_GET['query'] ) ? sanitize_text_field( wp_unslash( $_GET['query'] ) ) : ''; // phpcs:ignore WordPress.Security |
| 2370 |
if ( trim( $query ) === '' ) { |
| 2371 |
status_header( 400 ); |
| 2372 |
exit; |
| 2373 |
} |
| 2374 |
|
| 2375 |
$resume_tool = isset( $_GET['resume_tool'] ) ? sanitize_key( wp_unslash( $_GET['resume_tool'] ) ) : null; // phpcs:ignore WordPress.Security |
| 2376 |
$start_offset = isset( $_GET['start_offset'] ) ? absint( $_GET['start_offset'] ) : 0; // phpcs:ignore WordPress.Security |
| 2377 |
if ( null !== $resume_tool && ! in_array( $resume_tool, openstation_ai_search_resumable_tools(), true ) ) { |
| 2378 |
$resume_tool = null; |
| 2379 |
} |
| 2380 |
|
| 2381 |
// SSE headers — tell nginx to stop buffering, tell the browser this is |
| 2382 |
// a persistent event stream. |
| 2383 |
header( 'Content-Type: text/event-stream; charset=utf-8' ); |
| 2384 |
header( 'Cache-Control: no-cache, no-store, must-revalidate' ); |
| 2385 |
header( 'X-Accel-Buffering: no' ); |
| 2386 |
header( 'Connection: keep-alive' ); |
| 2387 |
|
| 2388 |
// Let other requests from this user proceed (release session lock). |
| 2389 |
if ( session_status() === PHP_SESSION_ACTIVE ) { |
| 2390 |
session_write_close(); |
| 2391 |
} |
| 2392 |
|
| 2393 |
// Kill any output buffers PHP set up, otherwise nothing flushes until |
| 2394 |
// the request ends — which defeats the whole point of streaming. |
| 2395 |
while ( ob_get_level() > 0 ) { |
| 2396 |
@ob_end_flush(); // phpcs:ignore |
| 2397 |
} |
| 2398 |
@ini_set( 'output_buffering', 'off' ); // phpcs:ignore |
| 2399 |
@ini_set( 'zlib.output_compression', 'off' ); // phpcs:ignore |
| 2400 |
@set_time_limit( 120 ); // phpcs:ignore |
| 2401 |
|
| 2402 |
$emit = static function ( array $payload ) { |
| 2403 |
echo 'data: ' . wp_json_encode( $payload ) . "\n\n"; |
| 2404 |
@ob_flush(); // phpcs:ignore |
| 2405 |
flush(); |
| 2406 |
}; |
| 2407 |
|
| 2408 |
// Initial tick so the EventSource opens immediately and the JS can |
| 2409 |
// start showing "Thinking…" without waiting for the first model call. |
| 2410 |
$emit( array( 'event' => 'open' ) ); |
| 2411 |
|
| 2412 |
$result = openstation_ai_run_search( |
| 2413 |
$query, |
| 2414 |
$resume_tool, |
| 2415 |
$start_offset, |
| 2416 |
function ( $progress ) use ( $emit ) { |
| 2417 |
$emit( array_merge( array( 'event' => 'progress' ), $progress ) ); |
| 2418 |
} |
| 2419 |
); |
| 2420 |
|
| 2421 |
if ( is_wp_error( $result ) ) { |
| 2422 |
$emit( |
| 2423 |
array( |
| 2424 |
'event' => 'error', |
| 2425 |
'message' => $result->get_error_message(), |
| 2426 |
'code' => $result->get_error_code(), |
| 2427 |
) |
| 2428 |
); |
| 2429 |
} else { |
| 2430 |
$emit( |
| 2431 |
array( |
| 2432 |
'event' => 'done', |
| 2433 |
'result' => $result, |
| 2434 |
) |
| 2435 |
); |
| 2436 |
} |
| 2437 |
|
| 2438 |
exit; |
| 2439 |
} |
| 2440 |
add_action( 'wp_ajax_openstation_ai_search_stream', 'openstation_ai_ajax_search_stream' ); |
| 2441 |
|
