BP_Bbp_Gdpr_Topics::topics_eraser( $email_address, int $page = 1 )

	function topics_eraser( $email_address, $page = 1 ) {
		$per_page = 500; // Limit us to avoid timing out
		$page     = (int) $page;

		$user = get_user_by( 'email', $email_address );
		if ( false === $user ) {
			return array(
				'items_removed'  => false,
				'items_retained' => false,
				'messages'       => array(),
				'done'           => true,
			);
		}

		$items_removed  = false;
		$items_retained = false;
		$messages       = array();

		$items = $this->get_topics( $user, 1, $per_page );

		if ( ! $items ) {
			return array(
				'items_removed'  => false,
				'items_retained' => false,
				'messages'       => array(),
				'done'           => true,
			);
		}

		$total  = isset( $items['total'] ) ? $items['total'] : 0;
		$topics = ! empty( $items['topics'] ) ? $items['topics'] : array();

		if ( $total ) {
			foreach ( (array) $topics as $topic ) {
				$attachments = get_posts( array(
					'post_type'      => 'attachment',
					'posts_per_page' => - 1,
					'post_parent'    => $topic->ID,
				) );

				if ( $attachments ) {
					foreach ( $attachments as $attachment ) {
						wp_delete_post( $attachment->ID, true );
					}
				}
				wp_delete_post( $topic->ID, true );
				$items_removed = true;
			}
		}

		$offset = ( $page - 1 ) * $per_page;

		// Tell core if we have more comments to work on still
		$done = $total < $offset;

		return array(
			'items_removed'  => $items_removed,
			'items_retained' => $items_retained,
			'messages'       => $messages,
			'done'           => $done,
		);
	}