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195
includes/class-peptide-news-rest-articles.php
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195
includes/class-peptide-news-rest-articles.php
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<?php
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declare( strict_types=1 );
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/**
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* REST API handler for the /articles endpoint.
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*
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* Returns paginated, cached, active articles with source-name stripping
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* to clean up aggregator suffixes from titles, excerpts, and AI summaries.
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*
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* Called by: Peptide_News_Rest_API::register_routes() (callback for GET /articles).
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* Dependencies: $wpdb, Peptide_News_Source_Resolver (for domain extraction).
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*
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* @since 2.6.0
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* @see class-peptide-news-rest-api.php — Route registration and analytics endpoints.
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*/
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class Peptide_News_Rest_Articles {
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/**
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* GET /articles — returns paginated active articles with transient caching.
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*
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* Side effects: DB reads, transient cache read/write.
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*
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* @param WP_REST_Request $request Request object.
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* @return WP_REST_Response
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*/
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public function get_articles( $request ) {
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global $wpdb;
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$count = absint( min( $request->get_param( 'count' ), 100 ) );
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$page = absint( max( $request->get_param( 'page' ), 1 ) );
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$table = $wpdb->prefix . 'peptide_news_articles';
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$cache_key = 'peptide_news_articles_' . $page . '_' . $count;
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$cached_response = get_transient( $cache_key );
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if ( false !== $cached_response ) {
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return rest_ensure_response( $cached_response );
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}
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$total = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$table} WHERE is_active = %d", 1 ) );
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$max_page = max( 1, (int) ceil( $total / $count ) );
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$page = min( $page, $max_page );
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$offset = ( $page - 1 ) * $count;
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$articles = $wpdb->get_results( $wpdb->prepare(
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"SELECT id, source, source_url, title, excerpt, ai_summary, author,
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thumbnail_url, thumbnail_local, published_at, categories, tags
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FROM {$table}
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WHERE is_active = 1
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ORDER BY published_at DESC
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LIMIT %d OFFSET %d",
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$count,
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$offset
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) );
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$this->clean_source_suffixes( $articles );
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$data = array(
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'articles' => $articles,
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'total' => (int) $total,
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'page' => $page,
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'per_page' => $count,
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'total_pages' => ceil( $total / $count ),
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);
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set_transient( $cache_key, $data, HOUR_IN_SECONDS );
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return rest_ensure_response( $data );
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}
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/**
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* Strip source/publisher names from title, excerpt, and ai_summary fields.
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*
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* Mutates article objects in-place.
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*
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* @param array $articles Array of article objects from DB.
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*/
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private function clean_source_suffixes( array &$articles ): void {
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$nbsp = "\xC2\xA0";
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foreach ( $articles as $article ) {
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foreach ( array( 'title', 'excerpt', 'ai_summary' ) as $field ) {
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if ( empty( $article->$field ) ) {
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continue;
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}
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$article->$field = $this->strip_source_suffix( $article->$field, $article->source, $article->source_url );
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// Catch remaining nbsp-separated publisher names from Google News RSS.
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$text = $article->$field;
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$pos = strrpos( $text, $nbsp . $nbsp );
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if ( false === $pos ) {
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$pos = strrpos( $text, $nbsp );
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}
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if ( false !== $pos && $pos > 10 ) {
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$candidate = rtrim( substr( $text, 0, $pos ) );
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if ( strlen( $candidate ) > strlen( $text ) * 0.3 ) {
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$article->$field = $candidate;
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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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* Strip the source/publisher name from the end of a string.
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*
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* Handles separators: " - Source", " | Source", " — Source", " – Source".
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* Tries exact match against known source names, then regex fallback.
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*
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* @param string $text The text to clean.
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* @param string $source The source name to strip.
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* @param string $source_url The source URL (for domain-based publisher names).
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* @return string Cleaned text.
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*/
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private function strip_source_suffix( string $text, string $source, string $source_url = '' ): string {
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if ( empty( $text ) ) {
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return $text;
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}
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$text = html_entity_decode( $text, ENT_QUOTES | ENT_HTML5, 'UTF-8' );
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$nbsp = "\xC2\xA0";
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$separators = array( ' - ', ' | ', ' — ', ' – ', ' // ', $nbsp . $nbsp, ' ', $nbsp );
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$source_names = $this->collect_source_names( $source, $source_url );
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// Try exact (case-insensitive) match against known source names.
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foreach ( $source_names as $name ) {
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foreach ( $separators as $sep ) {
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$suffix = $sep . $name;
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$suffix_len = strlen( $suffix );
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if ( strlen( $text ) > $suffix_len && strcasecmp( substr( $text, -$suffix_len ), $suffix ) === 0 ) {
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return rtrim( substr( $text, 0, -$suffix_len ) );
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}
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}
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}
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// Fallback 1: strip trailing " - Short Publisher Name" (1-5 words, starts uppercase).
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$pattern = '/\s+[-\x{2013}\x{2014}|]\s+[A-Z][A-Za-z0-9\s.\'\-]{0,50}$/u';
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$candidate = preg_replace( $pattern, '', $text );
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if ( $candidate !== $text && strlen( $candidate ) > strlen( $text ) * 0.4 ) {
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return rtrim( $candidate );
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}
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// Fallback 2: strip trailing nbsp-separated publisher names (Google News RSS).
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if ( preg_match( '/^(.{10,}?)\x{00A0}{1,2}([A-Z][^.!?\x{00A0}]{0,55})$/u', $text, $m ) ) {
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if ( mb_strlen( $m[1], 'UTF-8' ) > mb_strlen( $text, 'UTF-8' ) * 0.4 ) {
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return rtrim( $m[1] );
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}
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}
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return $text;
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}
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/**
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* Build list of source names to match against for suffix stripping.
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*
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* @param string $source Article source field.
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* @param string $source_url Article source URL.
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* @return array
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*/
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private function collect_source_names( string $source, string $source_url ): array {
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$names = array();
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if ( ! empty( $source ) ) {
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$names[] = $source;
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}
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// Cached distinct source names to avoid DB query per article.
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$cached_sources = get_transient( 'peptide_news_source_names' );
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if ( false === $cached_sources ) {
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global $wpdb;
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$table = $wpdb->prefix . 'peptide_news_articles';
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$cached_sources = $wpdb->get_col( "SELECT DISTINCT source FROM {$table} WHERE source != '' ORDER BY source" );
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if ( ! is_array( $cached_sources ) ) {
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$cached_sources = array();
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}
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set_transient( 'peptide_news_source_names', $cached_sources, HOUR_IN_SECONDS );
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}
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$names = array_merge( $names, $cached_sources );
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// Extract domain-based publisher name from URL.
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if ( ! empty( $source_url ) ) {
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$host = wp_parse_url( $source_url, PHP_URL_HOST );
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if ( $host ) {
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$host = preg_replace( '/^www\./', '', $host );
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$parts = explode( '.', $host );
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if ( count( $parts ) >= 2 ) {
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$domain_name = $parts[ count( $parts ) - 2 ];
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$names[] = str_replace( '-', ' ', $domain_name );
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$names[] = $domain_name;
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}
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}
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}
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return $names;
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}
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}
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