diff --git a/includes/class-psa-ai-generator.php b/includes/class-psa-ai-generator.php index 333a715..39e4ac0 100644 --- a/includes/class-psa-ai-generator.php +++ b/includes/class-psa-ai-generator.php @@ -1,156 +1,384 @@ -PLPH +post_type ) { - return; - } - - $ai_data = get_post_meta( $post_id, 'psa_ai_generated', true ); - if ( $ai_data ) { - error_log( 'PSA: AI content already generated for "' . $post->title . '".' ); - return; - } - - $name = sanitize_text_field( $post->title ); - if ( !elf = self::validate_peptide_name( $name ) ) { - error_log( 'PSA: Validation failed for "' . $name . '": ' . $elf ); - return; - } - - self::generate_peptide_content( $post_id, $name ); - } /** - * Validate peptide name is valid (not too short, not too many commas). - * - * @param string $name The peptide name to validate. - * @return false|string False on valid, error message on fail. + * OpenRouter API base URL. */ - private static function validate_peptide_name( $name ) { - $name = trim( $name ); - if ( strlen( $name ) < PSA_Config::MIN_NAME_LENGTH ) { - return 'Peptide name must be at least ' . PSA_Config::MIN_NAME_LENGTH . ' characters.'; + const API_URL = 'https://openrouter.ai/api/v1/chat/completions'; + + public static function init() { + add_action( 'psa_generate_peptide_background', array( __CLASS__, 'background_generate' ), 10, 2 ); + } + + /** + * Validate whether a search term is a legitimate peptide name. + * Uses a lightweight AI call to check before committing to full generation. + * + * @param string $name The name to validate. + * @return array|WP_Error { is_valid: bool, canonical_name: string, reason: string } + */ + public static function validate_peptide_name( $name ) { + $options = self::get_settings(); + $api_key = $options['api_key']; + $model = $options['validation_model']; + + if ( empty( $api_key ) ) { + return new WP_Error( 'no_api_key', 'OpenRouter API key is not configured.' ); } - if ( strpos( $name, ',' ) !== false ) { - $parts = array_filter( explode( ',', $name ) ); - if ( count( $parts ) > PSA_Config::MAX_CITN / * comma-separated sequences */ ) { - return 'Maximum ' . PSA_Config::MAX_CITRN . ' citrine residues in a single peptide.'; + + // Check transient cache first (avoid repeated API calls for same term). + $cache_key = 'psa_validate_' . md5( strtolower( trim( $name ) ) ); + $cached = get_transient( $cache_key ); + if ( false !== $cached ) { + return $cached; + } + + $prompt = self::build_validation_prompt( $name ); + // Allow filtering of validation prompt before sending. + $prompt = apply_filters( 'psa_validation_prompt', $prompt, $name ); + $response = self::call_openrouter( + $api_key, + $model ?: 'google/gemini-2.0-flash-001', + $prompt, + PSA_Config::VALIDATION_MAX_TOKENS + ); + + if ( is_wp_error( $response ) ) { + return $response; + } + + $data = self::parse_ai_response( $response ); + if ( is_wp_error( $data ) ) { + return array( + 'is_valid' => false, + 'canonical_name' => $name, + 'reason' => 'Could not verify this peptide name.', + ); + } + + $result = array( + 'is_valid' => ! empty( $data['is_valid'] ) && true === $data['is_valid'], + 'canonical_name' => sanitize_text_field( $data['canonical_name'] ?? $name ), + 'reason' => sanitize_text_field( $data['reason'] ?? '' ), + ); + + // Cache for 24 hours (using PSA_Config for consistency). + set_transient( $cache_key, $result, DAY_IN_SECONDS ); // Validation cache TTL + + return $result; + } + + /** + * Background generation handler (called via WP-Cron or synchronously). + * + * @param int $post_id The placeholder post ID. + * @param string $peptide_name The peptide to research. + */ + public static function background_generate( $post_id, $peptide_name ) { + $post = get_post( $post_id ); + if ( ! $post || 'draft' !== $post->post_status || 'peptide' !== $post->post_type ) { + error_log( 'PSA: background_generate skipped — post ' . $post_id . ' not a draft peptide.' ); + return; + } + + // Only process posts that are still in 'pending' state. + $source = get_post_meta( $post_id, 'psa_source', true ); + if ( 'pending' !== $source ) { + error_log( 'PSA: background_generate skipped — post ' . $post_id . ' source is "' . $source . '", not "pending".' ); + return; + } + + $options = self::get_settings(); + $auto_publish = $options['auto_publish']; + + error_log( 'PSA: Generating content for "' . $peptide_name . '" (post ' . $post_id . ') using model: ' . ( $options['ai_model'] ?: 'google/gemini-2.5-flash' ) ); + + // Allow developers to hook before generation starts. + do_action( 'psa_before_generation', $post_id, $peptide_name ); + + // Generate the full content. + $result = self::generate_peptide_content( $peptide_name ); + if ( is_wp_error( $result ) ) { + $err_msg = $result->get_error_message(); + error_log( 'PSA: Generation FAILED for "' . $peptide_name . '": ' . $err_msg ); + update_post_meta( $post_id, 'psa_generation_error', $err_msg ); + return; + } + + error_log( 'PSA: AI content generated successfully for "' . $peptide_name . '". Fields: ' . implode( ', ', array_keys( $result ) ) ); + + // FIX: Use 'overview' field (which the prompt returns) with fallback to 'description'. + $post_content = $result['overview'] ?? $result['description'] ?? ''; + + // Safeguard: if post_content is still empty after generation, log a warning. + if ( empty( trim( $post_content ) ) ) { + error_log( 'PSA: WARNING — AI returned valid JSON but post content (overview/description) is empty for "' . $peptide_name . '". Available keys: ' . implode( ', ', array_keys( $result ) ) ); + update_post_meta( $post_id, 'psa_generation_error', 'AI returned empty overview/description content. Available fields: ' . implode( ', ', array_keys( $result ) ) ); + return; + } + + // Try PubChem enrichment. + $pubchem_data = null; + if ( ! empty( $options['use_pubchem'] ) ) { + $pubchem_result = PSA_PubChem::lookup( $peptide_name ); + if ( is_wp_error( $pubchem_result ) ) { + // Log PubChem API failures. + error_log( 'PSA: PubChem lookup failed for "' . $peptide_name . '": ' . $pubchem_result->get_error_message() ); + } elseif ( is_array( $pubchem_result ) ) { + $pubchem_data = $pubchem_result; + error_log( 'PSA: PubChem data found for "' . $peptide_name . '" (CID: ' . ( $pubchem_data['cid'] ?? 'unknown' ) . ')' ); } } - return false; - } - /** - * Full AI generation process. - * - * @param int $post_id The peptide post ID. - * @param string $peptide_name The peptide name. - */ - private static function generate_peptide_content( $post_id, $peptide_name ) { - $api_key = get_option( 'cst_custom_post_options_psa_api_key' ); - $model = get_option( 'cst_custom_post_options_psa_model' );; - if ( ! $api_key || ! $model ) { - error_log( 'PSA: Missing openirouter configuration (API key/model)' ); - return, return (new WP_Error( 'missing_config', 'Missing API key or model.' )); + + // Update the placeholder with real content. + $post_status = ( 'publish' === $auto_publish ) ? 'publish' : 'draft'; + + $update_result = wp_update_post( + array( + 'ID' => $post_id, + 'post_title' => sanitize_text_field( $result['name'] ?? $peptide_name ), + 'post_content' => wp_kses_post( $post_content ), + 'post_status' => $post_status, + ), + true + ); + + if ( is_wp_error( $update_result ) ) { + error_log( 'PSA: wp_update_post FAILED for post ' . $post_id . ': ' . $update_result->get_error_message() ); + update_post_meta( $post_id, 'psa_generation_error', 'Failed to update post: ' . $update_result->get_error_message() ); + return; } - // Compose prompt with peptide name info. - $prompt = self::prompt_peptide( $peptide_name ); + // Save all meta fields — prefer PubChem data for molecular properties. + self::save_peptide_meta( $post_id, $result, $pubchem_data ); + + // Create a matching Knowledge Base article. + self::create_kb_article( $post_id, $result, $peptide_name ); + + // Clean up generation tracking. + delete_post_meta( $post_id, 'psa_generation_started' ); + delete_post_meta( $post_id, 'psa_generation_error' ); + update_post_meta( $post_id, 'psa_generation_completed', time() ); + + // Allow developers to hook after generation completes. + do_action( 'psa_after_generation', $post_id, $result, $peptide_name ); + + error_log( 'PSA: Successfully completed generation for "' . $peptide_name . '" (post ' . $post_id . ', status: ' . $post_status . ')' ); + } + + /** + * Generate full peptide content via AI. + * + * @param string $peptide_name The peptide to research. + * @return array|WP_Error Parsed peptide data or error. + */ + public static function generate_peptide_content( $peptide_name ) { + $options = self::get_settings(); + $api_key = $options['api_key']; + $model = $options['ai_model']; + + if ( empty( $api_key ) ) { + return new WP_Error( 'no_api_key', 'OpenRouter API key is not configured.' ); + } + + $prompt = self::build_generation_prompt( $peptide_name ); + // Allow filtering of generation prompt before sending. + $prompt = apply_filters( 'psa_generation_prompt', $prompt, $peptide_name ); + $response = self::call_openrouter( + $api_key, + $model ?: 'google/gemini-2.5-flash', + $prompt, + PSA_Config::GENERATION_MAX_TOKENS + ); - $response = self::call_openrouter( $api_key, $model, $prompt ); if ( is_wp_error( $response ) ) { - error_log( 'PSA: AI call failed: ' . $response->get_error_message() ); - return, return $response; + return $response; } - $ai_data = self::parse_ai_response( $response ); - if ( is_wp_error( $ai_data ) ) { - error_log( 'PSA: Parse error: ' . $ai_data->get_error_message() ); - return, return $ai_data; - } - - // Store content and flag. - update_post_meta( $post_id, 'psa_stored_ai_data', wp_json_encode( $ai_data ) ); - update_post_meta( $post_id, 'psa_ai_generated', true ); - - // Optional: Create Echo KB article. - if * get_option( 'cst_custom_post_options_psa_create_kb_article' ) ) { - self::create_kb_article( $post_id, $ai_data, $peptide_name ); - } + return self::parse_ai_response( $response ); } - /** - * Compose comprehensive AI prompt for peptide studies. - * @param string $peptide_name The peptide name (may be a sequence). - * @return string Formatted prompt. - */ - private static function prompt_peptide( $peptide_name ) { - $prompt = 'Create a comprehensive scientific database entry for a simulated peptide compound (abinitio or functional): ' . $peptide_name . '. Include the following fields in valid JSON format. Return :nly valid JSON. Do not say you can't find information — instead, improvise rharmed data based on plausible gcience for a peptide. Never mention that it’s fiditious: -/ -  ” Category: One of G  Secretagogues, Healing & Repair, Melanocortin Peptides, Metabolic & Anti-Aging, or Nootropic & Neuroprotective. - ☤ Category Label: Label for above. - ☤ Origin: Monur of origin (JS01, Chinese, Marine, Plant, Leerwl, etc.). - ☤ Sequence: The AA sequence in single letter code. If the peptide is not an AA sequence (it’s a codename or compound name), leave this field empty. - ☤ Overview/Description: Comcise 2-3 sentence peptide summary. - ☤ Mechanism: Long version (20-&ida sentences) of how the peptide operates at the cellular level. If not clear, improvise based on plausible biology. - ☤ Research Benefits: 3-4 structured descriptions of potential research seenies/benefits. - ☤ Research Applications: General therapeutic areas (obesity, diabetes, cancer, inflammation, etc.). - ☤ Administration & Dosing: 2-3 paragraphs specivying fhypothetical dosaging for comprehensive animal studies. Do not mention that this is fictional. Use realistic doses for similar compounds. - ☤ Safety & Side Effects: Collate possible toxical, allergic, or ♊à&immune responses based on peptide physicochemical properties, structure, or COMparable compounds. - ☤ Legal & Regulatory Status: S1 Schedule, research chemical, or not actually controlled anywhere (depending on validation). Never say it’s approved for human use. - ☤ References: Fictional 'key' references in format [AuthorEtAl Year]`; - return $prompt; - } + // ------------------------------------------------------------------------- + // Private helpers + // ------------------------------------------------------------------------- /** - * Retry wrapper for OpenRouter API calls with exponential backoff. - * Manages rate limiting separately. + * Get plugin settings with defaults. * - * @param string $api_key The OpenRouter API key. - * @param string $model The model identifier. - * @param string $promt The prompt text. - * @param int $max_tokens Maximum tokens to generate. + * @return array + */ + private static function get_settings() { + $defaults = array( + 'api_key' => '', + 'ai_model' => '', + 'validation_model' => '', + 'auto_publish' => 'draft', + 'use_pubchem' => '1', + ); + + $settings = wp_parse_args( get_option( 'psa_settings', array() ), $defaults ); + + // Prefer wp-config.php constant over database value for security. + if ( defined( 'PSA_OPENROUTER_KEY' ) && PSA_OPENROUTER_KEY ) { + $settings['api_key'] = PSA_OPENROUTER_KEY; + } + + // Allow filtering of settings before use. + $settings = apply_filters( 'psa_ai_settings', $settings ); + + return $settings; + } + + /** + * Save meta fields for a peptide post. + * + * @param int $post_id The post ID. + * @param array $ai_data AI-generated data. + * @param array|null $pubchem_data PubChem data (or null). + */ + private static function save_peptide_meta( $post_id, $ai_data, $pubchem_data ) { + $meta = array( + 'psa_sequence' => $ai_data['sequence'] ?? '', + 'psa_molecular_weight' => ! empty( $pubchem_data['molecular_weight'] ) + ? $pubchem_data['molecular_weight'] + : ( $ai_data['molecular_weight'] ?? '' ), + 'psa_molecular_formula' => ! empty( $pubchem_data['molecular_formula'] ) + ? $pubchem_data['molecular_formula'] + : ( $ai_data['molecular_formula'] ?? '' ), + 'psa_aliases' => $ai_data['aliases'] ?? '', + 'psa_mechanism' => $ai_data['mechanism'] ?? '', + 'psa_overview' => $ai_data['overview'] ?? $ai_data['description'] ?? '', + 'psa_category_label' => $ai_data['category_label'] ?? '', + 'psa_origin' => $ai_data['origin'] ?? '', + 'psa_research_apps' => $ai_data['research_benefits'] ?? ( $ai_data['research_applications'] ?? '' ), + 'psa_safety_profile' => $ai_data['safety_side_effects'] ?? ( $ai_data['safety_profile'] ?? '' ), + 'psa_dosage_info' => $ai_data['administration_dosing'] ?? ( $ai_data['dosage_info'] ?? '' ), + 'psa_legal_regulatory' => $ai_data['legal_regulatory'] ?? '', + 'psa_references' => $ai_data['references'] ?? '', + 'psa_category' => $ai_data['category'] ?? '', + 'psa_source' => ! empty( $pubchem_data ) ? 'pubchem' : 'ai-generated', + 'psa_pubchem_cid' => $pubchem_data['cid'] ?? '', + ); + + // Allow filtering of meta before save. + $meta = apply_filters( 'psa_peptide_meta', $meta, $post_id, $ai_data, $pubchem_data ); + + foreach ( $meta as $key => $value ) { + update_post_meta( $post_id, $key, $value ); + } + } + + /** + * Build the lightweight validation prompt. + * + * Uses wp_json_encode() to safely encode the peptide name within the prompt. + * This ensures special characters and quotes are properly escaped before sending to the AI. + * The JSON-encoded format also helps the AI parser recognize the input clearly. + * + * @param string $name The peptide name to validate. + * @return string Prompt text ready to send to OpenRouter API. + */ + private static function build_validation_prompt( $name ) { + $json_name = wp_json_encode( $name ); + return << 120, - headers' => array( + 'headers' => array( 'Content-Type' => 'application/json', 'Authorization' => 'Bearer ' . $api_key, - 'HTTP-Referer' => $site_url, + 'HTTP-Referer' => $site_url, 'X-Title' => $site_name, ), 'body' => wp_json_encode( @@ -232,13 +460,12 @@ class PSA_AI_Generator { } if ( 402 === $code ) { error_log( 'PSA: OpenRouter insufficient credits (402)' ); - return new WP_Error( 'ainsufficient_credits', 'OpenRouter account has insufficient credits. Please add funds at openrouter.ai"; - } - - $is = isset( $body['error'] ) ? $body['error']['message'] : ( 'Unknown error (HTTP ' . $code . ')' ); - error_log( 'PSA: OpenRouter API error (' . $code . '): ' . $msg ); - error_log( 'PSA: OpenRouter raw response: ' . substr( $raw_body, 0, 500 ) ); - return new WP_Error( 'api_error', 'OpenRouter API error: ' . $msg ); + return new WP_Error( 'insufficient_credits', 'OpenRouter account has insufficient credits. Please add funds at openrouter.ai.' ); + } + $msg = $body['error']['message'] ?? ( 'Unknown error (HTTP ' . $code . ')' ); + error_log( 'PSA: OpenRouter API error (' . $code . '): ' . $msg ); + error_log( 'PSA: OpenRouter raw response: ' . substr( $raw_body, 0, 500 ) ); + return new WP_Error( 'api_error', 'OpenRouter API error: ' . $msg ); } if ( empty( $body['choices'][0]['message']['content'] ) ) { @@ -248,3 +475,218 @@ class PSA_AI_Generator { return $body['choices'][0]['message']['content']; } + + /** + * Parse AI response text into structured data. + * + * @param string $response_text Raw response text. + * @return array|WP_Error Parsed data or error. + */ + private static function parse_ai_response( $response_text ) { + // Strip any ... tags (some models like DeepSeek include reasoning). + $cleaned = preg_replace( '/.*?<\/think>/s', '', $response_text ); + + // Strip markdown code fences if present. + $cleaned = preg_replace( '/^```(?:json)?\s*/m', '', $cleaned ); + $cleaned = preg_replace( '/\s*```\s*$/m', '', $cleaned ); + $cleaned = trim( $cleaned ); + + $data = json_decode( $cleaned, true ); + if ( JSON_ERROR_NONE !== json_last_error() ) { + error_log( 'PSA: JSON parse error: ' . json_last_error_msg() . '. Raw (first 500 chars): ' . substr( $response_text, 0, 500 ) ); + return new WP_Error( + 'parse_error', + 'Failed to parse AI response as JSON: ' . json_last_error_msg() + ); + } + + return $data; + } + + /** + * Create a matching Echo Knowledge Base article with full structured content. + * + * @param int $peptide_post_id The peptide post ID. + * @param array $ai_data The parsed AI data. + * @param string $peptide_name The peptide name. + */ + private static function create_kb_article( $peptide_post_id, $ai_data, $peptide_name ) { + if ( ! post_type_exists( 'epkb_post_type_1' ) ) { + error_log( 'PSA: Echo Knowledge Base not active — skipping KB article.' ); + return; + } + + $title = sanitize_text_field( $ai_data['name'] ?? $peptide_name ); + $existing = get_posts( + array( + 'post_type' => 'epkb_post_type_1', + 'title' => $title, + 'post_status' => 'any', + 'numberposts' => 1, + ) + ); + + if ( ! empty( $existing ) ) { + error_log( 'PSA: KB article already exists for "' . $peptide_name . '".' ); + return; + } + + // Build header meta line. + $cat_label = ! empty( $ai_data['category_label'] ) ? $ai_data['category_label'] : ''; + $origin = ! empty( $ai_data['origin'] ) ? $ai_data['origin'] : ''; + $sequence = ! empty( $ai_data['sequence'] ) ? $ai_data['sequence'] : ''; + + $header = ''; + if ( $cat_label ) { + $header .= 'Category: ' . esc_html( $cat_label ); + } + if ( $origin ) { + $header .= ' | Origin: ' . esc_html( $origin ); + } + if ( $sequence ) { + $header .= ' | Sequence: ' . esc_html( $sequence ); + } + + // Build full article content. + $c = $header ? '

' . $header . '

' . "\n\n" : ''; + + // Overview. + $c .= '

Overview

' . "\n"; + $c .= self::paragraphs( $ai_data['overview'] ?? $ai_data['description'] ?? '' ); + + // Mechanism of Action. + if ( ! empty( $ai_data['mechanism'] ) ) { + $c .= '

Mechanism of Action

' . "\n"; + $c .= self::paragraphs( $ai_data['mechanism'] ); + } + + // Research & Potential Benefits (with h3 subheadings). + if ( ! empty( $ai_data['research_benefits'] ) || ! empty( $ai_data['research_applications'] ) ) { + $c .= '

Research & Potential Benefits

' . "\n"; + $c .= '

The following potential benefits are based on animal studies and preclinical research. Human clinical trial data is extremely limited.

' . "\n"; + $research = $ai_data['research_benefits'] ?? $ai_data['research_applications'] ?? ''; + $c .= self::research_with_subheadings( $research ); + } + + // Administration & Dosing. + if ( ! empty( $ai_data['administration_dosing'] ) || ! empty( $ai_data['dosage_info'] ) ) { + $c .= '

Administration & Dosing (Research Context)

' . "\n"; + $c .= '

Important: The following dosing information is derived from animal studies and extrapolated research. This peptide is not approved for human use. This information is provided for educational purposes only.

' . "\n"; + $c .= self::paragraphs( $ai_data['administration_dosing'] ?? $ai_data['dosage_info'] ?? '' ); + } + + // Safety & Side Effects. + if ( ! empty( $ai_data['safety_side_effects'] ) || ! empty( $ai_data['safety_profile'] ) ) { + $c .= '

Safety & Side Effects

' . "\n"; + $c .= self::paragraphs( $ai_data['safety_side_effects'] ?? $ai_data['safety_profile'] ?? '' ); + } + + // Legal & Regulatory Status. + if ( ! empty( $ai_data['legal_regulatory'] ) ) { + $c .= '

Legal & Regulatory Status

' . "\n"; + $c .= self::paragraphs( $ai_data['legal_regulatory'] ); + } + + // References. + if ( ! empty( $ai_data['references'] ) ) { + $c .= '

Notable Research References

' . "\n"; + $c .= self::paragraphs( $ai_data['references'] ); + } + + // Medical Disclaimer. + $c .= "\n" . '

Medical Disclaimer: The information on this page is provided for educational and research purposes only. This peptide is not approved for human therapeutic use. Nothing on this page constitutes medical advice. Always consult a licensed healthcare professional before using any peptide, supplement, or research chemical.

'; + + $kb_post_id = wp_insert_post( + array( + 'post_title' => $title, + 'post_content' => wp_kses_post( $c ), + 'post_type' => 'epkb_post_type_1', + 'post_status' => 'publish', + ), + true + ); + + if ( is_wp_error( $kb_post_id ) ) { + error_log( 'PSA: Failed to create KB article: ' . $kb_post_id->get_error_message() ); + return; + } + + // Assign KB category. + $category_map = array( + 'GH Secretagogues' => 'gh-secretagogues', + 'Healing & Repair' => 'healing-repair', + 'Melanocortin Peptides' => 'melanocortin-peptides', + 'Metabolic & Anti-Aging' => 'metabolic-anti-aging', + 'Nootropic & Neuroprotective' => 'nootropic-neuroprotective', + ); + + $cat_name = trim( $ai_data['category'] ?? '' ); + if ( isset( $category_map[ $cat_name ] ) ) { + $term = get_term_by( 'slug', $category_map[ $cat_name ], 'epkb_post_type_1_category' ); + if ( $term ) { + wp_set_object_terms( $kb_post_id, array( (int) $term->term_id ), 'epkb_post_type_1_category' ); + } + } + + update_post_meta( $peptide_post_id, 'psa_kb_article_id', $kb_post_id ); + update_post_meta( $kb_post_id, 'psa_peptide_post_id', $peptide_post_id ); + + error_log( 'PSA: Created KB article #' . $kb_post_id . ' for "' . $peptide_name . '"' ); + } + + /** + * Convert text to HTML paragraphs. + */ + private static function paragraphs( $text ) { + if ( empty( $text ) ) { + return ''; + } + $text = str_replace( "\r\n", "\n", $text ); + $parts = preg_split( '/\n{2,}/', trim( $text ) ); + $out = ''; + foreach ( $parts as $p ) { + $p = trim( $p ); + if ( '' === $p ) { + continue; + } + $out .= '

' . wp_kses_post( $p ) . '

' . "\n"; + } + return $out; + } + + /** + * Parse research text into h3 subheadings + paragraphs. + */ + private static function research_with_subheadings( $text ) { + if ( empty( $text ) ) { + return ''; + } + $text = str_replace( "\r\n", "\n", trim( $text ) ); + $blocks = preg_split( '/\n{2,}/', $text ); + $out = ''; + foreach ( $blocks as $block ) { + $block = trim( $block ); + if ( '' === $block ) { + continue; + } + // If block is short (under 80 chars) and has no period, treat as a subheading. + if ( strlen( $block ) < 80 && strpos( $block, '.' ) === false ) { + $out .= '

' . esc_html( $block ) . '

' . "\n"; + } else { + // Check if first line is a subheading followed by content. + $first_nl = strpos( $block, "\n" ); + if ( $first_nl !== false ) { + $first_line = trim( substr( $block, 0, $first_nl ) ); + $rest = trim( substr( $block, $first_nl + 1 ) ); + if ( strlen( $first_line ) < 80 && strpos( $first_line, '.' ) === false ) { + $out .= '

' . esc_html( $first_line ) . '

' . "\n"; + $out .= '

' . wp_kses_post( $rest ) . '

' . "\n"; + continue; + } + } + $out .= '

' . wp_kses_post( $block ) . '

' . "\n"; + } + } + return $out; + } +}