327 lines
11 KiB
PHP
327 lines
11 KiB
PHP
<?php
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/**
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* Fetches news from multiple sources and stores them in the database.
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*
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* Supported sources:
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* - RSS / Atom feeds (Google News, PubMed, custom)
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* - NewsAPI.org
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*
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* @since 1.0.0
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*/
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class Peptide_News_Fetcher {
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/**
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* Add custom WP-Cron schedules.
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*
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* @param array $schedules Existing schedules.
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* @return array
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*/
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public function add_custom_cron_schedules( $schedules ) {
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$schedules['every_fifteen_minutes'] = array(
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'interval' => 900,
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'display' => __( 'Every 15 Minutes', 'peptide-news' ),
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);
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$schedules['every_thirty_minutes'] = array(
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'interval' => 1800,
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'display' => __( 'Every 30 Minutes', 'peptide-news' ),
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);
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$schedules['every_four_hours'] = array(
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'interval' => 14400,
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'display' => __( 'Every 4 Hours', 'peptide-news' ),
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);
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$schedules['every_six_hours'] = array(
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'interval' => 21600,
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'display' => __( 'Every 6 Hours', 'peptide-news' ),
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);
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return $schedules;
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}
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/**
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* Master fetch method — called by WP-Cron.
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*/
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public function fetch_all_sources() {
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$articles = array();
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// Fetch from RSS feeds.
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if ( get_option( 'peptide_news_rss_enabled', 1 ) ) {
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$rss_articles = $this->fetch_rss_feeds();
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$articles = array_merge( $articles, $rss_articles );
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}
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// Fetch from NewsAPI.
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if ( get_option( 'peptide_news_newsapi_enabled', 0 ) ) {
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$api_key = get_option( 'peptide_news_newsapi_key', '' );
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if ( ! empty( $api_key ) ) {
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$newsapi_articles = $this->fetch_newsapi( $api_key );
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$articles = array_merge( $articles, $newsapi_articles );
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}
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}
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// Store articles (deduplication handled by hash).
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$stored = 0;
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foreach ( $articles as $article ) {
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if ( $this->store_article( $article ) ) {
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$stored++;
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}
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}
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// Log the fetch result.
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update_option( 'peptide_news_last_fetch', array(
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'time' => current_time( 'mysql' ),
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'found' => count( $articles ),
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'new_stored' => $stored,
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) );
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// Prune old articles beyond retention period.
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$this->prune_old_articles();
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}
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/**
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* Fetch articles from configured RSS feeds.
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*
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* @return array
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*/
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private function fetch_rss_feeds() {
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$feeds_raw = get_option( 'peptide_news_rss_feeds', '' );
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$feeds = array_filter( array_map( 'trim', explode( "\n", $feeds_raw ) ) );
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$articles = array();
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if ( ! function_exists( 'fetch_feed' ) ) {
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require_once ABSPATH . WPINC . '/feed.php';
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}
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foreach ( $feeds as $feed_url ) {
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$feed = fetch_feed( esc_url_raw( $feed_url ) );
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if ( is_wp_error( $feed ) ) {
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$this->log_error( 'RSS fetch failed for ' . $feed_url . ': ' . $feed->get_error_message() );
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continue;
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}
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$max_items = $feed->get_item_quantity( 50 );
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$items = $feed->get_items( 0, $max_items );
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foreach ( $items as $item ) {
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$thumbnail = '';
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// Try enclosure first.
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$enclosure = $item->get_enclosure();
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if ( $enclosure && $enclosure->get_link() ) {
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$thumbnail = $enclosure->get_link();
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}
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// Try media:thumbnail or media:content.
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if ( empty( $thumbnail ) ) {
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$thumbnail = $this->extract_image_from_content( $item->get_content() );
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}
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$pub_date = $item->get_date( 'Y-m-d H:i:s' );
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if ( empty( $pub_date ) ) {
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$pub_date = current_time( 'mysql' );
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}
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$articles[] = array(
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'source' => $this->extract_domain( $feed_url ),
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'source_url' => esc_url_raw( $item->get_permalink() ),
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'title' => sanitize_text_field( $item->get_title() ),
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'excerpt' => wp_trim_words( wp_strip_all_tags( $item->get_description() ), 40 ),
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'content' => wp_kses_post( $item->get_content() ),
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'author' => sanitize_text_field( $item->get_author() ? $item->get_author()->get_name() : '' ),
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'thumbnail_url' => esc_url_raw( $thumbnail ),
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'published_at' => $pub_date,
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'categories' => $this->extract_categories( $item ),
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'tags' => '',
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'language' => 'en',
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);
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}
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}
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return $articles;
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}
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/**
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* Fetch articles from NewsAPI.org.
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*
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* @param string $api_key
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* @return array
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*/
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private function fetch_newsapi( $api_key ) {
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$keywords = get_option( 'peptide_news_search_keywords', 'peptide research' );
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$articles = array();
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$url = add_query_arg( array(
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'q' => urlencode( $keywords ),
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'language' => 'en',
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'sortBy' => 'publishedAt',
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'pageSize' => 50,
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'apiKey' => $api_key,
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), 'https://newsapi.org/v2/everything' );
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$response = wp_remote_get( $url, array(
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'timeout' => 30,
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'headers' => array( 'User-Agent' => 'PeptideNewsWP/' . PEPTIDE_NEWS_VERSION ),
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) );
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if ( is_wp_error( $response ) ) {
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$this->log_error( 'NewsAPI fetch failed: ' . $response->get_error_message() );
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return $articles;
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}
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$body = json_decode( wp_remote_retrieve_body( $response ), true );
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if ( empty( $body['articles'] ) || 'ok' !== ( $body['status'] ?? '' ) ) {
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$this->log_error( 'NewsAPI returned no articles or error status.' );
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return $articles;
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}
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foreach ( $body['articles'] as $item ) {
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$pub_date = isset( $item['publishedAt'] )
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? gmdate( 'Y-m-d H:i:s', strtotime( $item['publishedAt'] ) )
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: current_time( 'mysql' );
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$articles[] = array(
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'source' => sanitize_text_field( $item['source']['name'] ?? 'NewsAPI' ),
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'source_url' => esc_url_raw( $item['url'] ?? '' ),
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'title' => sanitize_text_field( $item['title'] ?? '' ),
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'excerpt' => wp_trim_words( sanitize_text_field( $item['description'] ?? '' ), 40 ),
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'content' => wp_kses_post( $item['content'] ?? '' ),
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'author' => sanitize_text_field( $item['author'] ?? '' ),
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'thumbnail_url' => esc_url_raw( $item['urlToImage'] ?? '' ),
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'published_at' => $pub_date,
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'categories' => '',
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'tags' => '',
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'language' => 'en',
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);
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}
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return $articles;
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}
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/**
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* Store an article in the database. Deduplication via SHA-256 hash of URL.
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*
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* @param array $article
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* @return bool True if new article was inserted.
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*/
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private function store_article( $article ) {
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global $wpdb;
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$table = $wpdb->prefix \. 'peptide_news_articles';
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$hash = hash( 'sha256', $article['source_url'] );
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// Check for duplicate.
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$exists = $wpdb->get_var( $wpdb->prepare(
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"SELECT id FROM {$table} WHERE hash = %s",
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$hash
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) );
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if ( $exists ) {
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return false;
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}
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$result = $wpdb->insert(
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$table,
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array(
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'source' => $article['source'],
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'source_url' => $article['source_url'],
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'title' => $article['title'],
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'excerpt' => $article['excerpt'],
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'content' => $article['content'],
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'author' => $article['author'],
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'thumbnail_url' => $article['thumbnail_url'],
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'published_at' => $article['published_at'],
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'fetched_at' => current_time( 'mysql' ),
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'categories' => $article['categories'],
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'tags' => $article['tags'],
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'language' => $article['language'],
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'hash' => $hash,
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'is_active' => 1,
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),
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array( '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%d' )
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);
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return false !== $result;
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}
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/**
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* Remove articles older than the retention period.
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*/
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private function prune_old_articles() {
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global $wpdb;
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$retention_days = (int) get_option( 'peptide_news_article_retention', 90 );
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$cutoff = gmdate( 'Y-m-d H:i:s', strtotime( "-{$retention_days} days" ) );
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$table = $wpdb->prefix . 'peptide_news_articles';
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$wpdb->query( $wpdb->prepare(
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"UPDATE {$table} SET is_active = 0 WHERE published_at < %s",
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$cutoff
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) );
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}
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/**
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* Try to extract an image URL from HTML content.
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*
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* @param string $content
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* @return string
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*/
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private function extract_image_from_content( $content ) {
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if ( empty( $content ) ) {
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return '';
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}
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if ( preg_match( '/<img[^>]+src=["\']([^"\']+)["\']/', $content, $matches ) ) {
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return $matches[1];
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}
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// Check for media:content or media:thumbnail.
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if ( preg_match( '/url=["\']([^"\']+)["\']/', $content, $matches ) ) {
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return $matches[1];
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}
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return '';
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}
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/**
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* Extract categories from a SimplePie item.
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*
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* @param SimplePie_Item $item
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* @return string Comma-separated categories.
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*/
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private function extract_categories( $item ) {
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$categories = $item->get_categories();
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if ( empty( $categories ) ) {
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return '';
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}
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$names = array();
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foreach ( $categories as $cat ) {
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$names[] = sanitize_text_field( $cat->get_label() );
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}
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return implode( ', ', array_filter( $names ) );
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}
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/**
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* Extract domain from a URL for source identification.
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*
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* @param string $url
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* @return string
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*/
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private function extract_domain( $url ) {
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$host = wp_parse_url( $url, PHP_URL_HOST );
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return $host ? preg_replace( '/^www\./', '', $host ) : 'unknown';
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}
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/**
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* Log an error to the WordPress debug log.
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*
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* @param string $message
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*/
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private function log_error( $message ) {
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if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
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error_log( '[Peptide News] ' . $message );
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}
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}
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}
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