includes/activitypub/transformer/class-event.php

@@ -174,9 +174,7 @@ abstract class Event extends Post {
 	}
 
 	/**
-	 * Compose a human readable formatted time.
-	 *
-	 * @param ?string $time The time which needs to be formatted
+	 * Compose a human readable formatted time from the parameter $time.
 	 */
 	private static function format_time( $time ) {
 		if ( is_null( $time ) ) {

includes/activitypub/transformer/class-events-manager.php

@@ -150,6 +150,23 @@ final class Events_Manager extends Event_Transformer {
 		return count( $em_bookings->bookings );
 	}
 
+	/**
+	 * Hardcoded function for generating a summary.
+	 */
+	public function get_summary(): ?string {
+		if ( $this->em_event->post_excerpt ) {
+			$excerpt = $this->em_event->post_excerpt;
+		} else {
+			$excerpt = $this->get_content();
+		}
+		$address           = $this->em_event->get_location()->location_name;
+		$start_time        = strtotime( $this->get_start_time() );
+		$datetime_format   = get_option( 'date_format' ) . ' ' . get_option( 'time_format' );
+		$start_time_string = wp_date( $datetime_format, $start_time );
+		$summary           = "📍 {$address}\n📅 {$start_time_string}\n\n{$excerpt}";
+		return $summary;
+	}
+
 	/**
 	 * Get the event link as an ActivityPub Link object, but as an associative array.
 	 *

includes/activitypub/transformer/class-gatherpress.php

@@ -129,6 +129,31 @@ final class GatherPress extends Event {
 		return $user->get_url();
 	}
 
+	/**
+	 * Create a custom summary.
+	 *
+	 * It contains also the most important meta-information. The summary is often used when the
+	 * ActivityPub object type 'Event' is not supported, e.g. in Mastodon.
+	 *
+	 * @return string $summary The custom event summary.
+	 */
+	public function get_summary(): string {
+		if ( $this->wp_object->excerpt ) {
+			$excerpt = $this->wp_object->post_excerpt;
+		} elseif ( get_post_meta( $this->wp_object->ID, 'event-summary', true ) ) {
+			$excerpt = get_post_meta( $this->wp_object->ID, 'event-summary', true );
+		} else {
+			$excerpt = $this->get_content();
+		}
+
+		$address           = get_post_meta( $this->wp_object->ID, 'event-location', true );
+		$start_time        = get_post_meta( $this->wp_object->ID, 'event-start-date', true );
+		$datetime_format   = get_option( 'date_format' ) . ' ' . get_option( 'time_format' );
+		$start_time_string = wp_date( $datetime_format, $start_time );
+		$summary           = "📍 {$address}\n📅 {$start_time_string}\n\n{$excerpt}";
+		return $summary;
+	}
+
 	/**
 	 * Get the content.
 	 */