feat: ad targeting for gpt (#180)

Author: miguelpeixe

includes/class-newspack-sponsors-core.php

@@ -49,6 +49,7 @@ public static function instance() {
 	public function __construct() {
 		add_action( 'init', [ __CLASS__, 'init' ] );
 		add_filter( 'newspack_ads_should_show_ads', [ __CLASS__, 'suppress_ads' ], 10, 2 );
+		add_filter( 'newspack_ads_ad_targeting', [ __CLASS__, 'ad_targeting' ], 10, 2 );
 	}
 
 	/**
@@ -70,6 +71,31 @@ public static function suppress_ads( $should_display, $post_id ) {
 		return $should_display;
 	}
 
+	/**
+	 * Set ad targeting for sponsored posts.
+	 *
+	 * @param array $targeting Ad targeting.
+	 *
+	 * @return array
+	 */
+	public static function ad_targeting( $targeting ) {
+		$sponsors = [];
+		if ( is_singular() ) {
+			$sponsors = get_sponsors_for_post( get_the_ID() );
+		} elseif ( is_archive() ) {
+			$sponsors = get_sponsors_for_archive();
+		}
+		if ( ! is_wp_error( $sponsors ) && ! empty( $sponsors ) && ! isset( $targeting['sponsors'] ) ) {
+			$targeting['sponsors'] = array_map(
+				function( $sponsor ) {
+					return $sponsor['sponsor_slug'];
+				},
+				$sponsors
+			);
+		}
+		return $targeting;
+	}
+
 	/**
 	 * After WP init.
 	 */