Deploy 69cb000 from main
This commit is contained in:
github-actions[bot]
142
includes/class-peptide-news-llm-prompt-builder.php
Normal file
142
includes/class-peptide-news-llm-prompt-builder.php
Normal file
@@ -0,0 +1,142 @@
|
||||
<?php
|
||||
declare( strict_types=1 );
|
||||
/**
|
||||
* Prompt construction for LLM-based article analysis.
|
||||
*
|
||||
* Builds keyword-extraction and summarization prompts from article data.
|
||||
* When stored article content is sparse, fetches the source URL to
|
||||
* obtain meaningful text for the LLM.
|
||||
*
|
||||
* Called by Peptide_News_LLM::process_article() before each API call.
|
||||
* No external dependencies beyond WordPress HTTP API.
|
||||
*
|
||||
* @since 2.5.0
|
||||
* @see class-peptide-news-llm.php Orchestrator that consumes the prompts.
|
||||
* @see class-peptide-news-llm-client.php HTTP transport that sends them.
|
||||
*/
|
||||
class Peptide_News_LLM_Prompt_Builder {
|
||||
|
||||
/**
|
||||
* Build the prompt for keyword extraction.
|
||||
*
|
||||
* Concatenates title, excerpt, and a truncated body (≤ 2 000 chars)
|
||||
* to keep token usage low while giving the model enough context.
|
||||
*
|
||||
* @param object $article DB row with title, excerpt, content.
|
||||
* @return string Ready-to-send prompt text.
|
||||
*/
|
||||
public static function keywords( object $article ): string {
|
||||
$text = $article->title;
|
||||
if ( ! empty( $article->excerpt ) ) {
|
||||
$text .= "\n\n" . $article->excerpt;
|
||||
}
|
||||
if ( ! empty( $article->content ) ) {
|
||||
// Limit content to ~2000 chars to keep token usage reasonable.
|
||||
$text .= "\n\n" . mb_substr( wp_strip_all_tags( $article->content ), 0, 2000 );
|
||||
}
|
||||
|
||||
return "Extract 5-10 relevant keywords or key phrases from this peptide research article. "
|
||||
. "Return ONLY a comma-separated list of keywords, nothing else. No numbering, no explanations.\n\n"
|
||||
. "Article:\n" . $text;
|
||||
}
|
||||
|
||||
/**
|
||||
* Build the prompt for article summarization.
|
||||
*
|
||||
* When the article's stored content is sparse (empty or just the title),
|
||||
* attempts to fetch the actual page content from the source URL.
|
||||
*
|
||||
* @param object $article DB row with title, excerpt, content, source_url.
|
||||
* @return string Ready-to-send prompt text.
|
||||
*/
|
||||
public static function summary( object $article ): string {
|
||||
$title = trim( $article->title ?? '' );
|
||||
$excerpt = trim( $article->excerpt ?? '' );
|
||||
$content = trim( $article->content ?? '' );
|
||||
$content_raw = wp_strip_all_tags( $content );
|
||||
|
||||
// Determine if we have meaningful content beyond just the title.
|
||||
$has_real_excerpt = ! empty( $excerpt ) && $excerpt !== $title;
|
||||
$has_real_content = mb_strlen( $content_raw ) > 100;
|
||||
|
||||
// If content is sparse, try fetching the article's web page.
|
||||
if ( ! $has_real_content && ! empty( $article->source_url ) ) {
|
||||
$fetched = self::fetch_article_text( $article->source_url );
|
||||
if ( ! empty( $fetched ) ) {
|
||||
$content_raw = $fetched;
|
||||
$has_real_content = true;
|
||||
}
|
||||
}
|
||||
|
||||
$text = $title;
|
||||
if ( $has_real_excerpt ) {
|
||||
$text .= "\n\n" . $excerpt;
|
||||
}
|
||||
if ( $has_real_content ) {
|
||||
$text .= "\n\n" . mb_substr( $content_raw, 0, 3000 );
|
||||
}
|
||||
|
||||
return "Summarize this peptide research article in 3-4 sentences. "
|
||||
. "Be concise, factual, and accessible to a general audience interested in peptide science. "
|
||||
. "Do not include any preamble or labels — just the summary text.\n\n"
|
||||
. "Article:\n" . $text;
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetch article text from a URL for summarization when RSS content is sparse.
|
||||
*
|
||||
* Extracts the main body text from the page, stripping navigation,
|
||||
* scripts, styles, and other non-content elements.
|
||||
*
|
||||
* Side effects: one outbound HTTP GET request (10 s timeout).
|
||||
*
|
||||
* @param string $url The article URL.
|
||||
* @return string Cleaned plain text or empty string on failure.
|
||||
*/
|
||||
private static function fetch_article_text( string $url ): string {
|
||||
$response = wp_remote_get( $url, array(
|
||||
'timeout' => 10,
|
||||
'user-agent' => 'Mozilla/5.0 (compatible; PeptideNewsBot/1.0; +https://peptiderepo.com)',
|
||||
'headers' => array( 'Accept' => 'text/html' ),
|
||||
) );
|
||||
|
||||
if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
|
||||
return '';
|
||||
}
|
||||
|
||||
$html = wp_remote_retrieve_body( $response );
|
||||
if ( empty( $html ) ) {
|
||||
return '';
|
||||
}
|
||||
|
||||
// Strip elements that don't carry article content.
|
||||
$html = preg_replace( '/<script[^>]*>.*?<\/script>/is', '', $html );
|
||||
$html = preg_replace( '/<style[^>]*>.*?<\/style>/is', '', $html );
|
||||
$html = preg_replace( '/<nav[^>]*>.*?<\/nav>/is', '', $html );
|
||||
$html = preg_replace( '/<header[^>]*>.*?<\/header>/is', '', $html );
|
||||
$html = preg_replace( '/<footer[^>]*>.*?<\/footer>/is', '', $html );
|
||||
$html = preg_replace( '/<aside[^>]*>.*?<\/aside>/is', '', $html );
|
||||
$html = preg_replace( '/<!--.*?-->/s', '', $html );
|
||||
|
||||
// Try to extract content from <article> or <main> tags first.
|
||||
$text = '';
|
||||
if ( preg_match( '/<article[^>]*>(.*?)<\/article>/is', $html, $matches ) ) {
|
||||
$text = wp_strip_all_tags( $matches[1] );
|
||||
} elseif ( preg_match( '/<main[^>]*>(.*?)<\/main>/is', $html, $matches ) ) {
|
||||
$text = wp_strip_all_tags( $matches[1] );
|
||||
} else {
|
||||
$text = wp_strip_all_tags( $html );
|
||||
}
|
||||
|
||||
// Collapse whitespace.
|
||||
$text = preg_replace( '/\s+/', ' ', $text );
|
||||
$text = trim( $text );
|
||||
|
||||
// Only return if we got meaningful content.
|
||||
if ( mb_strlen( $text ) < 100 ) {
|
||||
return '';
|
||||
}
|
||||
|
||||
return $text;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user