| 1 |
<?php |
| 2 |
|
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namespace WPDeveloper\BetterDocs\REST; |
| 4 |
|
| 5 |
use WP_REST_Request; |
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use WPDeveloper\BetterDocs\Core\BaseAPI; |
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use WPDeveloper\BetterDocs\Utils\AIUsage; |
| 8 |
|
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/** |
| 10 |
* REST surface for the redesigned "Write with AI" modal. |
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* |
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* Replaces the legacy admin-ajax `generate_openai_content` handler. Supports the |
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* superset modal's flows: full-doc generation, outline generation, expanding an |
| 14 |
* approved outline into a doc, and generating a doc from pasted source content. |
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* All generation reuses the WriteWithAI service (same model/key/token settings). |
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* |
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* @see \WPDeveloper\BetterDocs\REST\AIEdit Sibling endpoint this mirrors. |
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*/ |
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class WriteWithAI extends BaseAPI { |
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|
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const MAX_SOURCE_LENGTH = 12000; |
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const MAX_PROMPT_LENGTH = 4000; |
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|
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public function register() { |
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$this->post( |
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'/write-with-ai', |
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array( $this, 'generate' ), |
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array( |
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'post_id' => array( |
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'type' => 'integer', |
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'required' => false, |
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'default' => 0, |
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), |
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'action' => array( |
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'type' => 'string', |
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'required' => true, |
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), |
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'title' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'keywords' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'prompt' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'source' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'source_type' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'git_url' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
| 67 |
), |
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'git_action' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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// "Browse repository" picker params (git-repos / git-items / git-contents). |
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'repo' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
| 78 |
), |
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'kind' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'path' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'ref' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
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), |
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'outline' => array( |
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'type' => 'array', |
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'required' => false, |
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'default' => array(), |
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), |
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'tone' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => '', |
| 103 |
), |
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'doc_size' => array( |
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'type' => 'string', |
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'required' => false, |
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'default' => 'any', |
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), |
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'generate_title' => array( |
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'type' => 'boolean', |
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'required' => false, |
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'default' => false, |
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), |
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'instruction_ids' => array( |
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'type' => 'array', |
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'required' => false, |
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'default' => array(), |
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), |
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) |
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); |
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} |
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|
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public function permission_check() { |
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// Gate on edit_others_posts to match the sibling FAQ/Glossary AI endpoints |
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// (AIFaq/AIGlossary) and keep Author-role users from spending the AI budget. |
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return current_user_can( 'edit_others_posts' ); |
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} |
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|
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public function generate( WP_REST_Request $request ) { |
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$write_ai = betterdocs()->ai_autowrtie; |
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|
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if ( empty( $write_ai ) || ! $write_ai->isEnabledWriteWithAI() ) { |
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return $this->error( |
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'ai_disabled', |
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__( 'Write with AI is disabled. Enable it from BetterDocs settings.', 'betterdocs' ), |
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400 |
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); |
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} |
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|
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if ( empty( $write_ai->get_api_key() ) ) { |
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return $this->error( |
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'missing_key', |
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__( 'OpenAI API key is missing. Add one in BetterDocs settings.', 'betterdocs' ), |
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400 |
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); |
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} |
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|
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$action = sanitize_key( (string) $request->get_param( 'action' ) ); |
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$post_id = (int) $request->get_param( 'post_id' ); |
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// NOTE: this text is sent verbatim in the OpenAI request body, not rendered |
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// as HTML, so we must NOT strip tags. sanitize_textarea_field() runs |
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// wp_strip_all_tags(), which would delete <ProductCard>, Array<T>, JSX/XML/HTML |
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// from the prompt before the model ever sees it. wp_check_invalid_utf8() keeps |
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// the angle brackets while still guarding against malformed UTF-8. |
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$prompt = $this->clip( wp_check_invalid_utf8( (string) $request->get_param( 'prompt' ) ), self::MAX_PROMPT_LENGTH ); |
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$keywords = sanitize_text_field( (string) $request->get_param( 'keywords' ) ); |
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|
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// Generation directives assembled server-side from the simplified modal. |
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$tone = sanitize_text_field( (string) $request->get_param( 'tone' ) ); |
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$doc_size = sanitize_key( (string) $request->get_param( 'doc_size' ) ); |
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$generate_title = (bool) $request->get_param( 'generate_title' ); |
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|
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// Selected instruction sets → extra system messages layered on the base |
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// (Default) system prompt. Unknown/empty ids are dropped by the resolver. |
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$instruction_ids = (array) $request->get_param( 'instruction_ids' ); |
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$extra_system = $write_ai->get_instruction_messages( $instruction_ids ); |
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|
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switch ( $action ) { |
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case 'generate-outline': |
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// Tone steers an outline; size/title only matter for the full doc. |
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$outline_prompt = $this->wrap_topic( $prompt ) |
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. $this->build_directives( $tone, $doc_size, false, false, false ); |
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return $this->handle_outline( $write_ai, $post_id, $outline_prompt, $extra_system ); |
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|
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case 'generate-doc': |
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$doc_prompt = $this->wrap_topic( $prompt ) |
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. $this->build_directives( $tone, $doc_size, $generate_title ); |
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return $this->handle_doc( $write_ai, $post_id, $doc_prompt, $keywords, $action, $doc_size, $extra_system ); |
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|
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case 'expand-outline': |
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$outline = $this->sanitize_outline( (array) $request->get_param( 'outline' ) ); |
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if ( empty( $outline ) ) { |
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return $this->error( 'ai_empty_outline', __( 'No outline provided to expand.', 'betterdocs' ), 400 ); |
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} |
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$expand_prompt = $this->wrap_topic( $prompt ) . "\n\n" |
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. __( 'Write the full documentation following EXACTLY this approved outline. Keep the heading order and levels:', 'betterdocs' ) |
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. "\n" . $this->render_outline( $outline ) |
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. $this->build_directives( $tone, $doc_size, $generate_title ); |
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return $this->handle_doc( $write_ai, $post_id, $expand_prompt, $keywords, $action, $doc_size, $extra_system ); |
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|
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case 'from-source': |
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// Prompt-bound source text: preserve tags (see the prompt note above). |
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$source = $this->clip( wp_check_invalid_utf8( (string) $request->get_param( 'source' ) ), self::MAX_SOURCE_LENGTH ); |
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if ( '' === trim( $source ) ) { |
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return $this->error( 'ai_empty_source', __( 'Please paste some source content.', 'betterdocs' ), 400 ); |
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} |
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$src_type = sanitize_text_field( (string) $request->get_param( 'source_type' ) ); |
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$src_labels = array( |
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'transcript' => __( 'support transcript', 'betterdocs' ), |
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'forum' => __( 'forum thread', 'betterdocs' ), |
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'notes' => __( 'raw notes', 'betterdocs' ), |
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); |
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$src_label = isset( $src_labels[ $src_type ] ) ? $src_labels[ $src_type ] : __( 'source material', 'betterdocs' ); |
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|
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// Light per-type framing: a one-line system hint steering how to treat |
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// this kind of material. Auto-detect (empty source_type) sends no hint. |
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$src_frames = array( |
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'transcript' => __( 'The source below is a customer-support conversation. Focus on the user\'s problem and its resolution; ignore greetings and small talk.', 'betterdocs' ), |
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'forum' => __( 'The source below is a forum discussion among multiple people. Treat the accepted or most-supported answer as authoritative and skip off-topic replies.', 'betterdocs' ), |
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'notes' => __( 'The source below is rough notes. Expand them into clear, complete prose.', 'betterdocs' ), |
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); |
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if ( isset( $src_frames[ $src_type ] ) ) { |
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array_unshift( $extra_system, array( 'role' => 'system', 'content' => $src_frames[ $src_type ] ) ); |
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} |
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|
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$source_prompt = trim( $prompt . "\n\n" |
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. sprintf( |
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/* translators: %s: source content type, e.g. "support transcript". */ |
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__( 'Turn the following %s into structured documentation. Use only the information it contains; do not invent details:', 'betterdocs' ), |
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$src_label |
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) |
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. "\n---\n" . $source . "\n---" ) |
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. $this->build_directives( $tone, $doc_size, $generate_title ); |
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return $this->handle_doc( $write_ai, $post_id, $source_prompt, $keywords, $action, $doc_size, $extra_system ); |
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|
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case 'git-repos': |
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case 'git-items': |
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case 'git-contents': |
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// "Browse repository" data for the From Git tab. Read-only listing |
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// that delegates to Pro (token + Git API live there). The picker |
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// builds a github.com URL client-side and generation still runs via |
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// the 'from-git' fetch above. |
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if ( ! betterdocs()->is_pro_active() ) { |
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return $this->error( 'pro_required', __( 'Generating from Git is a BetterDocs Pro feature.', 'betterdocs' ), 403 ); |
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} |
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|
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if ( 'git-repos' === $action ) { |
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$list = apply_filters( 'betterdocs_write_with_ai_git_repos', null ); |
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$payload_key = 'repos'; |
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} elseif ( 'git-items' === $action ) { |
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$repo = sanitize_text_field( (string) $request->get_param( 'repo' ) ); |
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$kind = sanitize_key( (string) $request->get_param( 'kind' ) ); |
| 243 |
if ( '' === $repo ) { |
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return $this->error( 'git_bad_repo', __( 'Please choose a repository.', 'betterdocs' ), 400 ); |
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} |
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if ( ! in_array( $kind, array( 'pull', 'issue' ), true ) ) { |
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$kind = 'pull'; |
| 248 |
} |
| 249 |
$list = apply_filters( 'betterdocs_write_with_ai_git_items', null, $repo, $kind ); |
| 250 |
$payload_key = 'items'; |
| 251 |
} else { // git-contents |
| 252 |
$repo = sanitize_text_field( (string) $request->get_param( 'repo' ) ); |
| 253 |
// Path segments come from GitHub's contents API verbatim; keep |
| 254 |
// slashes/spaces (sanitize_text_field trims tags, not slashes). |
| 255 |
$path = sanitize_text_field( (string) $request->get_param( 'path' ) ); |
| 256 |
$ref = sanitize_text_field( (string) $request->get_param( 'ref' ) ); |
| 257 |
if ( '' === $repo ) { |
| 258 |
return $this->error( 'git_bad_repo', __( 'Please choose a repository.', 'betterdocs' ), 400 ); |
| 259 |
} |
| 260 |
$list = apply_filters( 'betterdocs_write_with_ai_git_contents', null, $repo, $path, $ref ); |
| 261 |
$payload_key = null; // return the { ref, path, items } structure as-is |
| 262 |
} |
| 263 |
|
| 264 |
if ( is_wp_error( $list ) ) { |
| 265 |
return $this->error( $list->get_error_code() ?: 'git_list_failed', $list->get_error_message(), 400 ); |
| 266 |
} |
| 267 |
if ( null === $list ) { |
| 268 |
return $this->error( 'git_unavailable', __( 'Could not reach Git. Confirm Git Sync is connected.', 'betterdocs' ), 400 ); |
| 269 |
} |
| 270 |
return $this->success( null === $payload_key ? (array) $list : array( $payload_key => $list ) ); |
| 271 |
|
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case 'from-git': |
| 273 |
// From Git is a Pro feature — the fetch runs in betterdocs-pro. The |
| 274 |
// modal already blocks this without Pro, but keep the endpoint honest. |
| 275 |
if ( ! betterdocs()->is_pro_active() ) { |
| 276 |
return $this->error( 'pro_required', __( 'Generating from Git is a BetterDocs Pro feature.', 'betterdocs' ), 403 ); |
| 277 |
} |
| 278 |
|
| 279 |
$git_url = esc_url_raw( trim( (string) $request->get_param( 'git_url' ) ) ); |
| 280 |
if ( '' === $git_url ) { |
| 281 |
return $this->error( 'ai_empty_git', __( 'Please paste a Git URL (a pull request or a repository file).', 'betterdocs' ), 400 ); |
| 282 |
} |
| 283 |
|
| 284 |
// Delegate the actual fetch to Pro (token + API client live there). |
| 285 |
$fetched = apply_filters( 'betterdocs_write_with_ai_git_fetch', null, $git_url, array( 'post_id' => $post_id ) ); |
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|
| 287 |
if ( is_wp_error( $fetched ) ) { |
| 288 |
return $this->error( $fetched->get_error_code() ?: 'git_fetch_failed', $fetched->get_error_message(), 400 ); |
| 289 |
} |
| 290 |
if ( empty( $fetched ) || empty( $fetched['content'] ) ) { |
| 291 |
return $this->error( 'git_unavailable', __( 'Could not read anything from that Git URL. Check the link, or confirm Git Sync is connected.', 'betterdocs' ), 400 ); |
| 292 |
} |
| 293 |
|
| 294 |
// Fetched Git content is code/diffs; preserve tags (see the prompt note above). |
| 295 |
$git_content = $this->clip( wp_check_invalid_utf8( (string) $fetched['content'] ), self::MAX_SOURCE_LENGTH ); |
| 296 |
if ( '' === trim( $git_content ) ) { |
| 297 |
return $this->error( 'git_unavailable', __( 'The fetched Git content was empty.', 'betterdocs' ), 400 ); |
| 298 |
} |
| 299 |
$git_label = ! empty( $fetched['source_label'] ) ? sanitize_text_field( (string) $fetched['source_label'] ) : __( 'source material', 'betterdocs' ); |
| 300 |
|
| 301 |
// Optional per-intent framing, mirroring from-source's per-type hints. |
| 302 |
$git_action = sanitize_key( (string) $request->get_param( 'git_action' ) ); |
| 303 |
$git_frames = array( |
| 304 |
'document_feature' => __( 'The source below was fetched from a Git pull request or code change. Explain, in end-user documentation terms, what the feature does and how to use it — not the implementation details or code.', 'betterdocs' ), |
| 305 |
'adapt_doc' => __( 'The source below is an existing documentation file from a Git repository. Rewrite it as a fresh doc for this site, keeping the meaning but improving clarity and structure.', 'betterdocs' ), |
| 306 |
'howto' => __( 'Turn the source below into a concise, step-by-step how-to guide.', 'betterdocs' ), |
| 307 |
); |
| 308 |
if ( isset( $git_frames[ $git_action ] ) ) { |
| 309 |
array_unshift( $extra_system, array( 'role' => 'system', 'content' => $git_frames[ $git_action ] ) ); |
| 310 |
} |
| 311 |
|
| 312 |
$git_prompt = trim( $prompt . "\n\n" |
| 313 |
. sprintf( |
| 314 |
/* translators: %s: the kind of Git source, e.g. "pull request" or "documentation file". */ |
| 315 |
__( 'Turn the following %s into structured documentation. Use only the information it contains; do not invent details:', 'betterdocs' ), |
| 316 |
$git_label |
| 317 |
) |
| 318 |
. "\n---\n" . $git_content . "\n---" ) |
| 319 |
. $this->build_directives( $tone, $doc_size, $generate_title ); |
| 320 |
return $this->handle_doc( $write_ai, $post_id, $git_prompt, $keywords, $action, $doc_size, $extra_system ); |
| 321 |
|
| 322 |
default: |
| 323 |
return $this->error( 'ai_bad_action', __( 'Unknown AI action.', 'betterdocs' ), 400 ); |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
/** |
| 328 |
* Full-doc generation (generate-doc, expand-outline, from-source all land here). |
| 329 |
*/ |
| 330 |
protected function handle_doc( $write_ai, $post_id, $prompt, $keywords, $action, $doc_size = 'any', $extra_system = array() ) { |
| 331 |
if ( '' === trim( $prompt ) ) { |
| 332 |
return $this->error( 'ai_empty_prompt', __( 'Please provide a prompt for the AI.', 'betterdocs' ), 400 ); |
| 333 |
} |
| 334 |
|
| 335 |
// A "long" doc can outrun the default 2500-token cap; give it headroom. |
| 336 |
$max_tokens = 'long' === $doc_size ? 4000 : null; |
| 337 |
|
| 338 |
$content = $write_ai->generate_openai_response( $prompt, $keywords, $max_tokens, $extra_system ); |
| 339 |
|
| 340 |
if ( ! is_string( $content ) || '' === trim( $content ) ) { |
| 341 |
return $this->error( 'empty', __( 'The AI returned no content. Try again or rephrase your prompt.', 'betterdocs' ), 502 ); |
| 342 |
} |
| 343 |
if ( 0 === strpos( $content, 'Error:' ) ) { |
| 344 |
return $this->error( 'ai_upstream', $content, 502 ); |
| 345 |
} |
| 346 |
|
| 347 |
// Sanitize the model-generated HTML before it leaves the server: the editor |
| 348 |
// renders it via dangerouslySetInnerHTML in the preview and inserts it as |
| 349 |
// blocks, so strip <script>, event-handler attributes, <iframe> and |
| 350 |
// javascript: URLs while keeping valid documentation markup. The system |
| 351 |
// prompt asks the model to avoid these, but that is a soft constraint — this |
| 352 |
// is the enforcement (a prompt-injected source/Git payload can't inject XSS). |
| 353 |
$content = wp_kses_post( $content ); |
| 354 |
|
| 355 |
AIUsage::record( 'write_with_ai', $post_id, $action ); |
| 356 |
|
| 357 |
return $this->success( array( 'content' => $content, 'action' => $action ) ); |
| 358 |
} |
| 359 |
|
| 360 |
/** |
| 361 |
* Outline-only generation. |
| 362 |
*/ |
| 363 |
protected function handle_outline( $write_ai, $post_id, $prompt, $extra_system = array() ) { |
| 364 |
if ( '' === trim( $prompt ) ) { |
| 365 |
return $this->error( 'ai_empty_prompt', __( 'Please provide a prompt for the AI.', 'betterdocs' ), 400 ); |
| 366 |
} |
| 367 |
|
| 368 |
$result = $write_ai->generate_outline_response( $prompt, $extra_system ); |
| 369 |
|
| 370 |
if ( empty( $result['success'] ) ) { |
| 371 |
$message = isset( $result['error'] ) ? (string) $result['error'] : __( 'Unknown AI error.', 'betterdocs' ); |
| 372 |
return $this->error( 'ai_upstream', $message, 502 ); |
| 373 |
} |
| 374 |
|
| 375 |
AIUsage::record( 'write_with_ai', $post_id, 'generate-outline' ); |
| 376 |
|
| 377 |
return $this->success( array( 'outline' => $result['outline'], 'action' => 'generate-outline' ) ); |
| 378 |
} |
| 379 |
|
| 380 |
/** |
| 381 |
* Normalize an outline payload into a clean list of { level, text } items. |
| 382 |
* |
| 383 |
* @param array $raw |
| 384 |
* @return array<int,array{level:string,text:string}> |
| 385 |
*/ |
| 386 |
protected function sanitize_outline( $raw ) { |
| 387 |
$outline = array(); |
| 388 |
foreach ( $raw as $item ) { |
| 389 |
if ( ! is_array( $item ) || empty( $item['text'] ) ) { |
| 390 |
continue; |
| 391 |
} |
| 392 |
$level = isset( $item['level'] ) && 'h3' === strtolower( (string) $item['level'] ) ? 'h3' : 'h2'; |
| 393 |
$text = sanitize_text_field( (string) $item['text'] ); |
| 394 |
if ( '' === $text ) { |
| 395 |
continue; |
| 396 |
} |
| 397 |
$outline[] = array( 'level' => $level, 'text' => $text ); |
| 398 |
} |
| 399 |
return $outline; |
| 400 |
} |
| 401 |
|
| 402 |
/** |
| 403 |
* Render an outline array into an indented plain-text list for the prompt. |
| 404 |
*/ |
| 405 |
protected function render_outline( $outline ) { |
| 406 |
$lines = array(); |
| 407 |
foreach ( $outline as $sec ) { |
| 408 |
$prefix = 'h3' === $sec['level'] ? ' - ' : '- '; |
| 409 |
$lines[] = $prefix . $sec['text']; |
| 410 |
} |
| 411 |
return implode( "\n", $lines ); |
| 412 |
} |
| 413 |
|
| 414 |
protected function clip( $value, $max ) { |
| 415 |
return strlen( $value ) > $max ? substr( $value, 0, $max ) : $value; |
| 416 |
} |
| 417 |
|
| 418 |
/** |
| 419 |
* Frame the user's free-form request as a documentation instruction. Returns |
| 420 |
* an empty string for an empty request (callers compose their own prompt). |
| 421 |
*/ |
| 422 |
protected function wrap_topic( $prompt ) { |
| 423 |
$prompt = trim( $prompt ); |
| 424 |
if ( '' === $prompt ) { |
| 425 |
return ''; |
| 426 |
} |
| 427 |
return __( 'Write documentation for the following request:', 'betterdocs' ) . "\n\n" . $prompt; |
| 428 |
} |
| 429 |
|
| 430 |
/** |
| 431 |
* Build the tone / size / title directive block appended to the prompt. Tone |
| 432 |
* applies to every action; size and the title instruction are doc-only. |
| 433 |
* |
| 434 |
* @param string $tone Selected tone slug ('' = default, no directive). |
| 435 |
* @param string $doc_size Selected size slug ('any' = no directive). |
| 436 |
* @param bool $generate_title Whether the AI should also produce an <h1> title. |
| 437 |
* @param bool $include_size Include the size directive (false for outlines). |
| 438 |
* @param bool $include_title Include the title directive (false for outlines). |
| 439 |
* @return string Leading "\n\n" + directives, or '' when none apply. |
| 440 |
*/ |
| 441 |
protected function build_directives( $tone, $doc_size, $generate_title, $include_size = true, $include_title = true ) { |
| 442 |
$lines = array(); |
| 443 |
|
| 444 |
$tone_map = array( |
| 445 |
'friendly' => __( 'Write in a warm, friendly, approachable tone.', 'betterdocs' ), |
| 446 |
'professional' => __( 'Write in a polished, professional tone.', 'betterdocs' ), |
| 447 |
'technical' => __( 'Write in a precise, technical tone suited to a technical audience.', 'betterdocs' ), |
| 448 |
'formal' => __( 'Write in a formal tone.', 'betterdocs' ), |
| 449 |
'casual' => __( 'Write in a casual, conversational tone.', 'betterdocs' ), |
| 450 |
); |
| 451 |
if ( isset( $tone_map[ $tone ] ) ) { |
| 452 |
$lines[] = $tone_map[ $tone ]; |
| 453 |
} |
| 454 |
|
| 455 |
if ( $include_size ) { |
| 456 |
$size_map = array( |
| 457 |
'short' => __( 'Keep the documentation concise — roughly 300–500 words, covering only the essential points.', 'betterdocs' ), |
| 458 |
'medium' => __( 'Aim for a moderate length — roughly 600–1000 words.', 'betterdocs' ), |
| 459 |
'long' => __( 'Be comprehensive and in-depth — roughly 1200 words or more, with thorough coverage and examples.', 'betterdocs' ), |
| 460 |
); |
| 461 |
if ( isset( $size_map[ $doc_size ] ) ) { |
| 462 |
$lines[] = $size_map[ $doc_size ]; |
| 463 |
} |
| 464 |
} |
| 465 |
|
| 466 |
if ( $include_title && $generate_title ) { |
| 467 |
$lines[] = __( 'Begin the output with a single <h1> element containing a concise, descriptive title for this documentation, then continue with the body content.', 'betterdocs' ); |
| 468 |
} |
| 469 |
|
| 470 |
return empty( $lines ) ? '' : "\n\n" . implode( "\n", $lines ); |
| 471 |
} |
| 472 |
} |
| 473 |
|
