| 1 |
<?php |
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/** |
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* Import HTML — the door an external AI client uses to turn HTML into real |
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* Spectra blocks on this site. The clients are Claude, Codex, Gemini, Cursor |
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* and ChatGPT. The client writes the HTML first. |
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* |
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* The client's own model writes the HTML. The ZIP AI service then converts it. |
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* The converter runs server-side. It is fail-closed on the block styling |
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* contract. The service commits the result back over the MCP of this site. |
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* This ability is the gate in front of that work. It checks that the site is |
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* connected. It decides whether the request needs explicit consent. It turns |
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* every service error into text the calling agent can act on. |
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* |
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* CONSENT: `match_site` is the default. It only ADDS a page. The other layouts |
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* write site-level state. So they run in two phases. The first call returns the |
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* impact and a `confirm_token`. It writes NOTHING. No human is in the loop at a |
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* tool call. So the second call is the consent record. |
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* |
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* @since 0.0.8 |
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* @package zip-ai |
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*/ |
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|
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namespace ZipAI\MCP\Classes\Abilities\Zipai\Builder; |
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|
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use ZipAI\MCP\Classes\Abilities\Abstract_Ability; |
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use ZipAI\MCP\Classes\Core\Helper; |
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use ZipAI\MCP\Classes\Core\Import_Impact; |
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use ZipAI\MCP\Classes\Core\Response; |
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use ZipAI\MCP\Classes\Core\Tool_Types; |
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use ZipAI\MCP\Classes\Services\Brain_Client; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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/** |
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* Ability: import externally-authored HTML as native blocks. |
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*/ |
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class ImportHtml extends Abstract_Ability { |
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|
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/** |
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* Consent window. Long enough for an agent to relay the impact list and come |
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* back, short enough that a token cannot be replayed a session later. |
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*/ |
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const CONFIRM_TTL = 600; |
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|
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/** |
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* Repeat-call window. A tool call that times out client-side is commonly |
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* re-issued; inside this window the same HTML returns the SAME page instead |
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* of creating a duplicate. |
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*/ |
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const REPEAT_TTL = 600; |
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|
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/** |
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* Configures the ability's id, label, description and metadata. |
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* |
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* @return void |
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*/ |
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public function configure() { |
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$this->id = 'zipai/import-html'; |
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$this->label = 'Import HTML as Blocks'; |
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$this->description = 'Import HTML as native Spectra/Gutenberg blocks on this WordPress site. Call zipai/get-site-context FIRST and write HTML that matches its palette, fonts and brand, with a slug that does not collide with an existing page. HTML written blind clashes with the site\'s design. Write plain semantic HTML and put ALL per-block styling in `className` (utility classes); never in a `style` attribute, and never as backgroundColor/textColor/boxShadow attributes, which the importer rejects outright. Images: reference full URLs (remote ones are re-hosted into the media library on import); ask the user for their images before inventing stock, and where no real image exists use an explicit https://placehold.co/{width}x{height} placeholder with a descriptive alt. Never a guessed URL: it imports as a broken-image swap. Defaults are non-destructive: the page is created as a DRAFT and your existing header, footer and colours are kept. Any layout that changes site-wide design returns an impact list plus a confirm_token first and writes nothing until you call again with that token. Show the user that list and get their approval before you do.'; |
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// Matches the endpoint that reaches it: the external MCP route demands |
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// `manage_options`, and credentials are only issued from an admin-only |
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// screen. A lower bar here would read as "editors can import" when no |
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// editor can get through the door. |
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$this->capability = 'manage_options'; |
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// Hidden from the AI chat catalog (`visibility: internal`). The chat |
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// agent must not see this: it would loop back into the server's own |
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// import path and cannot complete the two-phase confirm-token handshake. |
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// External MCP clients still get it via an explicit tool list. |
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$this->meta['visibility'] = 'internal'; |
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} |
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|
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/** |
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* Returns the tool-type classification for this ability. |
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* |
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* @return string One of the Tool_Types constants. |
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*/ |
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public function get_tool_type() { |
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return Tool_Types::ACTION; |
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} |
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|
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/** |
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* Annotated destructive because the SAME tool performs `replace_site`, which |
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* overwrites the site's header, footer, colours and fonts. The default layout |
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* only adds a draft page, but a client cannot know which layout a call will |
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* carry when it decides whether to prompt — so it should always prompt. The |
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* two-phase confirm token is the real gate; this is the client-side one. |
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* |
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* @return array{readonly: bool, destructive: bool, idempotent: bool} |
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*/ |
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public function get_annotations() { |
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return array( |
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'readonly' => false, |
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'destructive' => true, |
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// A repeat call inside the dedupe window returns the same page, but |
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// outside it a second call creates a second page. |
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'idempotent' => false, |
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); |
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} |
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|
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/** |
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* Returns the JSON Schema for this ability's input arguments. |
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* |
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* @return array<string,mixed> JSON Schema describing accepted arguments. |
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*/ |
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public function get_input_schema() { |
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return array( |
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'type' => 'object', |
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'required' => array( 'html' ), |
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'additionalProperties' => false, |
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'properties' => array( |
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'html' => array( |
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'type' => 'string', |
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'description' => 'The full HTML of ONE page. Inline any CSS in a <style> tag; external stylesheets are not fetched. Per-block styling must ride className only.', |
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'minLength' => 1, |
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), |
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'title' => array( |
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'type' => 'string', |
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'description' => 'Page title. Falls back to the <title>/<h1> found in the HTML.', |
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'maxLength' => 250, |
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), |
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'slug' => array( |
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'type' => 'string', |
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'description' => 'Optional URL slug. A taken slug is resolved to slug-2, slug-3 …; the slug actually used is returned.', |
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'maxLength' => 200, |
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), |
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'layout' => array( |
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'type' => 'string', |
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'enum' => array( 'match_site', 'standalone', 'replace_site' ), |
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'default' => 'match_site', |
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'description' => 'match_site (default, non-destructive): keep this site\'s header, footer and colours; only the page body is imported. standalone: the page renders with its OWN header and footer, other pages untouched. replace_site: the imported header, footer, colours and fonts replace the site\'s design EVERYWHERE. standalone and replace_site require confirmation.', |
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), |
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'status' => array( |
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'type' => 'string', |
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'enum' => array( 'draft', 'publish' ), |
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'default' => 'draft', |
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'description' => 'draft (default) lets the user review before anything is public.', |
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), |
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'set_homepage' => array( |
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'type' => 'boolean', |
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'default' => false, |
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'description' => 'Make this page the site\'s front page. Changes what visitors see first, so it requires confirmation.', |
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), |
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'sideload_images' => array( |
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'type' => 'boolean', |
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'default' => true, |
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'description' => 'Re-host remote images in the media library. Leave on unless the images must keep pointing at their original URLs.', |
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), |
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'confirm_token' => array( |
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'type' => 'string', |
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'description' => 'The token from this ability\'s previous impact response. Only send it after the user has approved the listed changes.', |
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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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* Import the supplied HTML. |
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* |
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* @param array<string,mixed> $args Validated input arguments. |
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* @return array<string,mixed> Standardized success or error response. |
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*/ |
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public function execute( $args ) { |
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$html = isset( $args['html'] ) && is_string( $args['html'] ) ? trim( $args['html'] ) : ''; |
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if ( '' === $html ) { |
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return Response::error( 'html is required.' ); |
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} |
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|
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$layout = $this->enum_arg( $args, 'layout', array( 'match_site', 'standalone', 'replace_site' ), 'match_site' ); |
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$status = $this->enum_arg( $args, 'status', array( 'draft', 'publish' ), 'draft' ); |
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$title = isset( $args['title'] ) && is_string( $args['title'] ) ? sanitize_text_field( $args['title'] ) : ''; |
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$slug = isset( $args['slug'] ) && is_string( $args['slug'] ) ? sanitize_title( $args['slug'] ) : ''; |
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$set_homepage = ! empty( $args['set_homepage'] ); |
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$sideload_images = ! isset( $args['sideload_images'] ) || (bool) $args['sideload_images']; |
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$confirm_token = isset( $args['confirm_token'] ) && is_string( $args['confirm_token'] ) ? $args['confirm_token'] : ''; |
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|
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// A draft cannot serve as the front page — visitors would get nothing. |
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// Coerced before the fingerprint so the consent covers what really runs. |
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if ( $set_homepage ) { |
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$status = 'publish'; |
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} |
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|
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// Gate 1 — the account. Checked before anything else: it is the most |
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// common reason a fresh site cannot import, and it is fixable by the |
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// user in one step. |
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if ( '' === Helper::get_decrypted_auth_token() ) { |
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return Response::error( |
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'This site is not connected to a ZIP AI account, so HTML cannot be converted.', |
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'Ask the user to open WP Admin → Settings → ZIP AI and connect their account, then call this tool again.' |
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); |
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} |
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|
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$destructive = $this->is_destructive( $layout, $set_homepage ); |
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|
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// Gate 2 — kept even though the ability now requires `manage_options` (so |
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// an admin satisfies it): it states the intent, and it is the check that |
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// still holds if the ability's own capability is ever lowered. |
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if ( $destructive && ! current_user_can( 'edit_theme_options' ) ) { |
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return Response::error( |
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sprintf( 'This account may create pages but not change the site design, so layout "%s" is not permitted.', $layout ), |
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'Retry with layout "match_site", which only adds a page.' |
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); |
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} |
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|
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$fingerprint = $this->fingerprint( $html, $layout, $status, $set_homepage ); |
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|
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// Gate 3 — repeat call, checked BEFORE consent. A destructive call that |
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// timed out client-side is re-issued with its already-consumed token; if |
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// consent ran first, the retry would bounce off "no longer valid" and |
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// drag the user through a second approval for a page that already |
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// exists. Returning the previous result writes nothing, so no consent is |
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// being skipped. |
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// |
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// The repeat key is DELIBERATELY wider than the consent fingerprint: |
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// slug, title and the sideload choice do not change what the user |
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// consented to, but they DO change what gets created — the same HTML |
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// re-imported with a different slug or title is a NEW page the caller |
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// asked for, not a duplicate submission to swallow. |
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$repeat_key = 'zipai_import_done_' . md5( |
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implode( '|', array( $fingerprint, $slug, $title, $sideload_images ? '1' : '0' ) ) |
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); |
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$previous = get_transient( $repeat_key ); |
| 223 |
if ( is_array( $previous ) ) { |
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return Response::success( |
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sprintf( |
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'This HTML was already imported a moment ago. The existing page is "%s"; nothing was created a second time.', |
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$this->str_field( $previous, 'page_url' ) |
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), |
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array( |
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'post_id' => $this->int_field( $previous, 'post_id' ), |
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'page_url' => $this->str_field( $previous, 'page_url' ), |
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'slug' => $this->str_field( $previous, 'slug' ), |
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'block_count' => $this->int_field( $previous, 'block_count' ), |
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'status' => $this->str_field( $previous, 'status' ), |
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'layout' => $this->str_field( $previous, 'layout' ), |
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'repeat' => true, |
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) |
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); |
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} |
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|
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// Gate 4 — consent. The first destructive call NEVER writes; it returns |
| 242 |
// what would change plus the token that authorises it. |
| 243 |
if ( $destructive ) { |
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$consent = $this->check_consent( $confirm_token, $fingerprint, $layout, $set_homepage ); |
| 245 |
if ( ! $consent['granted'] ) { |
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return $consent['response']; |
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} |
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} |
| 249 |
|
| 250 |
$payload = array( |
| 251 |
'wp_url' => get_site_url(), |
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'layout' => $layout, |
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'sideload_images' => $sideload_images, |
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// Never true from this door: the HTML is externally authored and |
| 255 |
// nobody consented to script injection. The service strips |
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// scripts and imports the rest. |
| 257 |
'scripts_acknowledged' => false, |
| 258 |
// Sent as a one-entry `pages[]` rather than the bare `html` |
| 259 |
// field: only the pages form carries a title and slug. |
| 260 |
'pages' => array( |
| 261 |
array( |
| 262 |
'html' => $html, |
| 263 |
'slug' => $slug, |
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'title' => $title, |
| 265 |
'is_homepage' => $set_homepage, |
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), |
| 267 |
), |
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); |
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|
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$result = Brain_Client::post( '/import', $payload ); |
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|
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// Self-heal the one failure this flow cannot ask the user to fix mid-call: |
| 273 |
// WordPress rejected the application password the service has on file. Only |
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// code running INSIDE WordPress holds the admin identity to mint a new one, |
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// and we are running inside WordPress right now — so re-mint, re-bind and |
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// retry ONCE instead of returning an error the agent can only relay. |
| 277 |
// |
| 278 |
// Safe to retry: the credential is rejected on the service's FIRST call |
| 279 |
// into the site, so nothing was written on the failed attempt. |
| 280 |
if ( ! $result['ok'] && 'wp_credential_rejected' === $result['code'] && Helper::reprovision_app_password() ) { |
| 281 |
$result = Brain_Client::post( '/import', $payload ); |
| 282 |
} |
| 283 |
|
| 284 |
if ( ! $result['ok'] ) { |
| 285 |
return $this->map_failure( $result ); |
| 286 |
} |
| 287 |
|
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// Consume the consent token only now that the service accepted the write. |
| 289 |
// Burning it inside check_consent meant a pre-write failure (service |
| 290 |
// unreachable, theme drift, load shed) killed the token while the failure |
| 291 |
// text told the agent to retry — dragging the user through a second |
| 292 |
// approval for a change that never happened. The fingerprint still binds |
| 293 |
// the surviving token to exactly the consequences that were approved. |
| 294 |
if ( $destructive ) { |
| 295 |
delete_transient( 'zipai_import_confirm_' . $fingerprint ); |
| 296 |
} |
| 297 |
|
| 298 |
return $this->map_success( $result['data'], $layout, $status, $repeat_key ); |
| 299 |
} |
| 300 |
|
| 301 |
/** |
| 302 |
* Turn a successful service response into the agent-facing result. |
| 303 |
* |
| 304 |
* @param array<string,mixed> $data Decoded server response. |
| 305 |
* @param string $layout Requested layout. |
| 306 |
* @param string $status Requested post status. |
| 307 |
* @param string $repeat_key Transient key guarding repeat calls. |
| 308 |
* @return array<string,mixed> |
| 309 |
*/ |
| 310 |
private function map_success( array $data, string $layout, string $status, string $repeat_key ) { |
| 311 |
$pages = isset( $data['pages'] ) && is_array( $data['pages'] ) ? $data['pages'] : array(); |
| 312 |
$page = isset( $pages[0] ) && is_array( $pages[0] ) ? $pages[0] : array(); |
| 313 |
|
| 314 |
// The service reports per-page success inside a 2xx. A page that failed |
| 315 |
// must not be announced as an import. |
| 316 |
// |
| 317 |
// A 2xx failure row is NOT proof nothing was written: the committer |
| 318 |
// creates the page, then writes GBS / the Style Guide / the shared |
| 319 |
// chrome, and a throw at any of those steps leaves a real `post_id` on |
| 320 |
// the row (the site-wide chrome write does exactly this). A page that |
| 321 |
// exists is reported rather than denied. Claiming "nothing was added" |
| 322 |
// here left a PUBLISHED page behind (the draft flip below never runs) |
| 323 |
// while telling the agent otherwise. |
| 324 |
if ( empty( $page['success'] ) ) { |
| 325 |
$detail = isset( $page['error'] ) && is_string( $page['error'] ) ? $page['error'] : 'the service did not say why'; |
| 326 |
$failed_id = $this->int_field( $page, 'post_id' ); |
| 327 |
$failed_url = $this->str_field( $page, 'page_url' ); |
| 328 |
$failure_data = array(); |
| 329 |
$next = 'Fix the reported problem in the HTML and call this tool again.'; |
| 330 |
|
| 331 |
if ( $failed_id > 0 ) { |
| 332 |
$failure_data['post_id'] = $failed_id; |
| 333 |
if ( '' !== $failed_url ) { |
| 334 |
$failure_data['page_url'] = $failed_url; |
| 335 |
} |
| 336 |
// Created as `publish` by the committer, and the draft flip is |
| 337 |
// downstream of this branch — so it is live right now. |
| 338 |
$failure_data['status'] = 'publish'; |
| 339 |
$detail .= sprintf( ' The page WAS created (post %d) and is PUBLISHED. Tell the user, and delete it if they do not want it.', $failed_id ); |
| 340 |
$next = 'Tell the user the page exists and is public, then fix the reported problem and re-run.'; |
| 341 |
} else { |
| 342 |
$next .= ' Nothing was added to the site.'; |
| 343 |
} |
| 344 |
|
| 345 |
// A styling-contract rejection arrives on the page ROW, not as a typed |
| 346 |
// status — the importer catches its own throw per page. It signals the |
| 347 |
// CONVERTER emitted a banned block attribute (inline CSS in the |
| 348 |
// submitted HTML is fine and gets translated), so this is our bug, not |
| 349 |
// the caller's: pass the exact blocks and keys through for a report |
| 350 |
// rather than telling the agent to rewrite its HTML. |
| 351 |
if ( isset( $page['violations'] ) && is_array( $page['violations'] ) ) { |
| 352 |
$failure_data['violations'] = $page['violations']; |
| 353 |
$next = 'This is a converter fault on our side, not a problem with your HTML. Report the listed blocks and keys to the user and do not simply retry; the same HTML will fail identically.'; |
| 354 |
} |
| 355 |
|
| 356 |
return Response::error( 'The page could not be imported: ' . $detail, $next, $failure_data ); |
| 357 |
} |
| 358 |
|
| 359 |
$post_id = $this->int_field( $page, 'post_id' ); |
| 360 |
$page_url = $this->str_field( $page, 'page_url' ); |
| 361 |
|
| 362 |
// The service publishes; honour a `draft` request here, where the post is |
| 363 |
// local. Done after the commit so chrome/design writes are complete — |
| 364 |
// which means the page IS briefly public. If the flip fails, the caller |
| 365 |
// must be told the page is live rather than trusting `status: draft`. |
| 366 |
$effective_status = $status; |
| 367 |
if ( 'draft' === $status && $post_id > 0 ) { |
| 368 |
$flipped = wp_update_post( |
| 369 |
array( |
| 370 |
'ID' => $post_id, |
| 371 |
'post_status' => 'draft', |
| 372 |
), |
| 373 |
true |
| 374 |
); |
| 375 |
if ( is_wp_error( $flipped ) ) { |
| 376 |
$effective_status = 'publish'; |
| 377 |
} |
| 378 |
} |
| 379 |
|
| 380 |
$data_out = array( |
| 381 |
'post_id' => $post_id, |
| 382 |
'page_url' => $page_url, |
| 383 |
'slug' => $this->str_field( $page, 'slug' ), |
| 384 |
'block_count' => $this->int_field( $page, 'block_count' ), |
| 385 |
'status' => $effective_status, |
| 386 |
'layout' => $layout, |
| 387 |
); |
| 388 |
|
| 389 |
set_transient( $repeat_key, $data_out, self::REPEAT_TTL ); |
| 390 |
|
| 391 |
$message = sprintf( |
| 392 |
'Imported %d blocks into "%s" (%s).', |
| 393 |
$data_out['block_count'], |
| 394 |
'' !== $page_url ? $page_url : 'the new page', |
| 395 |
'draft' === $effective_status ? 'saved as a draft, not public yet' : 'published' |
| 396 |
); |
| 397 |
if ( $effective_status !== $status ) { |
| 398 |
$message .= ' NOTE: the page could not be switched back to a draft, so it is PUBLIC. Tell the user.'; |
| 399 |
} |
| 400 |
// A slug the site had to rewrite is worth saying out loud — the agent may |
| 401 |
// have told the user a URL that does not exist. |
| 402 |
$requested = $this->str_field( $page, 'submitted_slug' ); |
| 403 |
if ( '' !== $requested && '' !== $data_out['slug'] && $requested !== $data_out['slug'] ) { |
| 404 |
$message .= sprintf( ' The slug "%s" was taken, so the page uses "%s".', $requested, $data_out['slug'] ); |
| 405 |
} |
| 406 |
return Response::success( $message, $data_out ); |
| 407 |
} |
| 408 |
|
| 409 |
/** |
| 410 |
* Turn a service failure into an actionable agent response. |
| 411 |
* |
| 412 |
* @param array{ok: bool, status: int, code: string, message: string, data: array<string,mixed>} $result Client result. |
| 413 |
* @return array<string,mixed> |
| 414 |
*/ |
| 415 |
private function map_failure( array $result ) { |
| 416 |
$code = $result['code']; |
| 417 |
$message = $result['message']; |
| 418 |
$data = array(); |
| 419 |
|
| 420 |
// One table, so a new service code cannot quietly fall through to a |
| 421 |
// generic message. `suggestion` is the agent's next action, not prose. |
| 422 |
$suggestions = array( |
| 423 |
'no_wordpress_credentials' => 'Ask the user to reconnect WordPress in WP Admin → Settings → ZIP AI.', |
| 424 |
'wp_credential_rejected' => 'WordPress refused the stored application password, so nothing was written. Ask the user to open WP Admin → Settings → ZIP AI and reconnect the site (this re-issues the password), then call this tool again. Do not retry before they do; it will fail identically.', |
| 425 |
'contract_violation' => 'This is a converter fault on our side, not a problem with the submitted HTML; inline CSS is legitimate and gets translated. Nothing was imported. Report the listed blocks and attributes to the user; do not simply retry, the same HTML will fail identically.', |
| 426 |
'payload_too_large' => 'The HTML is too large for one call. Split it into separate pages and import them one at a time.', |
| 427 |
'import_busy' => 'Wait for the number of seconds in retry_after_seconds, then call this tool again.', |
| 428 |
'import_in_progress' => 'Another import is already running on this site. Wait for it to finish, then retry.', |
| 429 |
'theme_drift' => 'The site theme changed while importing. Nothing was written; call this tool again.', |
| 430 |
'chrome_reader_pending' => 'This site\'s ZIP AI plugin is too old to apply an imported header and footer. Ask the user to update it, or retry with layout "match_site".', |
| 431 |
'site_mismatch' => 'This site is not the one the connected ZIP AI account is bound to. Ask the user to reconnect it.', |
| 432 |
'brain_unreachable' => 'The ZIP AI service could not be reached. Nothing was written; retry in a minute.', |
| 433 |
'bad_response' => 'The ZIP AI service replied in a form this site could not read. Retry; if it repeats, the user should contact support.', |
| 434 |
); |
| 435 |
|
| 436 |
// 413 never reaches the service's own taxonomy — the request is refused |
| 437 |
// at the transport by its byte cap. |
| 438 |
if ( 413 === $result['status'] ) { |
| 439 |
$code = 'payload_too_large'; |
| 440 |
$message = 'The HTML is larger than the import service accepts in one request.'; |
| 441 |
} |
| 442 |
|
| 443 |
if ( 'contract_violation' === $code && isset( $result['data']['violations'] ) && is_array( $result['data']['violations'] ) ) { |
| 444 |
// Structured, because this is the one failure the calling model can |
| 445 |
// fix by itself — but only if it is told which block carried which |
| 446 |
// banned attribute. |
| 447 |
$data['violations'] = $result['data']['violations']; |
| 448 |
} |
| 449 |
if ( 'import_busy' === $code ) { |
| 450 |
$retry = $this->int_field( $result['data'], 'retry_after_seconds' ); |
| 451 |
if ( $retry > 0 ) { |
| 452 |
$data['retry_after_seconds'] = $retry; |
| 453 |
} |
| 454 |
} |
| 455 |
$suggestion = isset( $suggestions[ $code ] ) ? $suggestions[ $code ] : 'Report this to the user; nothing was imported.'; |
| 456 |
|
| 457 |
return Response::error( $message, $suggestion, $data ); |
| 458 |
} |
| 459 |
|
| 460 |
/** |
| 461 |
* Whether a request needs explicit confirmation before it may write. |
| 462 |
* |
| 463 |
* @param string $layout Requested layout. |
| 464 |
* @param bool $set_homepage Whether the front page would change. |
| 465 |
* @return bool |
| 466 |
*/ |
| 467 |
private function is_destructive( string $layout, bool $set_homepage ) { |
| 468 |
return Import_Impact::needs_confirmation( $layout, $set_homepage ); |
| 469 |
} |
| 470 |
|
| 471 |
/** |
| 472 |
* Verify a confirmation token, or produce the impact response that mints one. |
| 473 |
* |
| 474 |
* @param string $token Token supplied by the caller. |
| 475 |
* @param string $fingerprint Fingerprint of this exact request. |
| 476 |
* @param string $layout Requested layout. |
| 477 |
* @param bool $set_homepage Whether the front page would change. |
| 478 |
* @return array{granted: bool, response: array<string,mixed>} |
| 479 |
*/ |
| 480 |
private function check_consent( string $token, string $fingerprint, string $layout, bool $set_homepage ) { |
| 481 |
$key = 'zipai_import_confirm_' . $fingerprint; |
| 482 |
|
| 483 |
if ( '' !== $token ) { |
| 484 |
$expected = get_transient( $key ); |
| 485 |
if ( is_string( $expected ) && hash_equals( $expected, $token ) ) { |
| 486 |
// NOT consumed here: execute() burns the token only after the |
| 487 |
// service accepts the write, so a pre-write failure leaves it |
| 488 |
// valid for the retry the failure text asks for. Single-use |
| 489 |
// still holds — a successful write deletes it, and the repeat |
| 490 |
// gate answers the window between the write and its expiry. |
| 491 |
return array( |
| 492 |
'granted' => true, |
| 493 |
'response' => array(), |
| 494 |
); |
| 495 |
} |
| 496 |
// A token that does not match this request is not an error to |
| 497 |
// paper over: either it expired, or the HTML/layout changed after |
| 498 |
// approval — which means the user approved different consequences. |
| 499 |
return array( |
| 500 |
'granted' => false, |
| 501 |
'response' => Response::error( |
| 502 |
'That confirmation is no longer valid: it expired, was already used, or the request changed after it was approved.', |
| 503 |
'Call this tool again WITHOUT confirm_token to get the current impact list, show it to the user, and use the new token.' |
| 504 |
), |
| 505 |
); |
| 506 |
} |
| 507 |
|
| 508 |
// The impact copy is shared with the wizard, so it is translated — but |
| 509 |
// this consumer is an AI client whose surrounding text is English. Pin |
| 510 |
// the locale so the consent block is not half-translated. |
| 511 |
$switched = function_exists( 'switch_to_locale' ) ? switch_to_locale( 'en_US' ) : false; |
| 512 |
$impact = Import_Impact::for_layout( $layout, $set_homepage ); |
| 513 |
if ( $switched ) { |
| 514 |
restore_current_locale(); |
| 515 |
} |
| 516 |
$fresh = wp_generate_password( 32, false ); |
| 517 |
set_transient( $key, $fresh, self::CONFIRM_TTL ); |
| 518 |
|
| 519 |
// The token and the impact list are repeated IN THE MESSAGE, not only in |
| 520 |
// `data`. Some MCP transports keep just the message string on a failed |
| 521 |
// tool call and drop every structured field — losing the token there |
| 522 |
// makes the consent flow impossible to complete, because the agent is |
| 523 |
// told to come back with something it was never given. |
| 524 |
$narrative = "NOTHING WAS IMPORTED. This request changes more than the new page, so it needs the user's approval first.\n\nWHAT WILL CHANGE:\n- " |
| 525 |
. implode( "\n- ", $impact['change'] ) |
| 526 |
. "\n\nWHAT WILL NOT CHANGE:\n- " |
| 527 |
. implode( "\n- ", $impact['keep'] ) |
| 528 |
. "\n\nReversible: " . $impact['reversible'] |
| 529 |
. "\n\nShow the lists above to the user verbatim. ONLY if they approve, call this tool again with the same arguments plus confirm_token: " |
| 530 |
. $fresh |
| 531 |
. sprintf( ' (valid for %d seconds).', self::CONFIRM_TTL ); |
| 532 |
|
| 533 |
return array( |
| 534 |
'granted' => false, |
| 535 |
'response' => Response::error( |
| 536 |
$narrative, |
| 537 |
'Relay will_change and will_not_change to the user in your own message, then repeat the call with confirm_token.', |
| 538 |
array( |
| 539 |
'needs_confirmation' => true, |
| 540 |
'confirm_token' => $fresh, |
| 541 |
'expires_in_seconds' => self::CONFIRM_TTL, |
| 542 |
'will_change' => $impact['change'], |
| 543 |
'will_not_change' => $impact['keep'], |
| 544 |
'reversible' => $impact['reversible'], |
| 545 |
) |
| 546 |
), |
| 547 |
); |
| 548 |
} |
| 549 |
|
| 550 |
/** |
| 551 |
* Stable fingerprint of one import request. Binds a confirmation to the exact |
| 552 |
* consequences the user approved: change the HTML, the layout, the status or |
| 553 |
* the homepage flag and the old token stops working. |
| 554 |
* |
| 555 |
* @param string $html Page HTML. |
| 556 |
* @param string $layout Requested layout. |
| 557 |
* @param string $status Requested post status. |
| 558 |
* @param bool $set_homepage Whether the front page would change. |
| 559 |
* @return string |
| 560 |
*/ |
| 561 |
private function fingerprint( string $html, string $layout, string $status, bool $set_homepage ) { |
| 562 |
return md5( |
| 563 |
implode( |
| 564 |
'|', |
| 565 |
array( |
| 566 |
(string) get_current_user_id(), |
| 567 |
get_stylesheet(), |
| 568 |
$layout, |
| 569 |
$status, |
| 570 |
$set_homepage ? '1' : '0', |
| 571 |
md5( $html ), |
| 572 |
) |
| 573 |
) |
| 574 |
); |
| 575 |
} |
| 576 |
|
| 577 |
/** |
| 578 |
* Read an enum argument, falling back to the default for anything unexpected. |
| 579 |
* |
| 580 |
* @param array<string,mixed> $args Input arguments. |
| 581 |
* @param string $key Argument name. |
| 582 |
* @param string[] $allowed Allowed values. |
| 583 |
* @param string $default Default value. |
| 584 |
* @return string |
| 585 |
*/ |
| 586 |
private function enum_arg( array $args, string $key, array $allowed, string $default ) { |
| 587 |
$value = isset( $args[ $key ] ) && is_string( $args[ $key ] ) ? $args[ $key ] : ''; |
| 588 |
return in_array( $value, $allowed, true ) ? $value : $default; |
| 589 |
} |
| 590 |
|
| 591 |
/** |
| 592 |
* Read a string out of a decoded service response. Everything crossing that |
| 593 |
* boundary is untyped, so each field is narrowed at the point of use — the |
| 594 |
* same discipline the importer's own `strField`/`numField` readers apply to |
| 595 |
* WordPress REST responses. |
| 596 |
* |
| 597 |
* @param array<mixed,mixed> $row Decoded row. |
| 598 |
* @param string $key Field name. |
| 599 |
* @return string Empty string when absent or not a string. |
| 600 |
*/ |
| 601 |
private function str_field( array $row, string $key ) { |
| 602 |
return isset( $row[ $key ] ) && is_string( $row[ $key ] ) ? $row[ $key ] : ''; |
| 603 |
} |
| 604 |
|
| 605 |
/** |
| 606 |
* Read an integer out of a decoded service response. |
| 607 |
* |
| 608 |
* @param array<mixed,mixed> $row Decoded row. |
| 609 |
* @param string $key Field name. |
| 610 |
* @return int Zero when absent or not numeric. |
| 611 |
*/ |
| 612 |
private function int_field( array $row, string $key ) { |
| 613 |
return isset( $row[ $key ] ) && is_numeric( $row[ $key ] ) ? (int) $row[ $key ] : 0; |
| 614 |
} |
| 615 |
|
| 616 |
/** |
| 617 |
* Returns the JSON Schema for this ability's response. |
| 618 |
* |
| 619 |
* @return array<string,mixed> JSON Schema describing the response shape. |
| 620 |
*/ |
| 621 |
public function get_output_schema() { |
| 622 |
return array( |
| 623 |
'type' => 'object', |
| 624 |
'required' => array( 'success' ), |
| 625 |
'properties' => array( |
| 626 |
'success' => array( 'type' => 'boolean' ), |
| 627 |
'message' => array( 'type' => 'string' ), |
| 628 |
'error' => array( 'type' => 'string' ), |
| 629 |
'suggestion' => array( 'type' => 'string' ), |
| 630 |
'data' => array( |
| 631 |
'type' => 'object', |
| 632 |
'properties' => array( |
| 633 |
'post_id' => array( 'type' => 'integer' ), |
| 634 |
'page_url' => array( 'type' => 'string' ), |
| 635 |
'slug' => array( 'type' => 'string' ), |
| 636 |
'block_count' => array( 'type' => 'integer' ), |
| 637 |
'status' => array( 'type' => 'string' ), |
| 638 |
'layout' => array( 'type' => 'string' ), |
| 639 |
'needs_confirmation' => array( 'type' => 'boolean' ), |
| 640 |
'confirm_token' => array( 'type' => 'string' ), |
| 641 |
'will_change' => array( 'type' => 'array' ), |
| 642 |
'will_not_change' => array( 'type' => 'array' ), |
| 643 |
'reversible' => array( 'type' => 'string' ), |
| 644 |
'violations' => array( 'type' => 'array' ), |
| 645 |
), |
| 646 |
), |
| 647 |
), |
| 648 |
); |
| 649 |
} |
| 650 |
} |
| 651 |
|
