extra triggers learndash

functions.php

<?php


add_filter( 'learndash_notifications_email_content', function( $message, $notification_id ) {
	if ( ! function_exists( 'WC' ) ) {
		return $message;
	}

			// load the mailer class.
			$mailer = WC()->mailer();

			// create a new email.
			$email = new \WC_Email();

			$email_heading = get_post_meta(
				$notification_id,
				'_ld_notifications_notification_heading',
				true
			);

			$email_heading = $email_heading ? $email_heading : 'Olá,';

			$message = apply_filters( 'woocommerce_mail_content', $email->style_inline( $mailer->wrap_message( $email_heading, $message ) ) );

	return $message;
}, 550, 2 );


add_filter( 'learndash_notification_settings', function( $fields ) {
	$fields['notification_heading'] = array(
		'type'      => 'text',
		'title'     => __( 'Cabeçalho do e-mail', 'learndash-notifications' ),
		'help_text' => __( 'Título do e-mail enviado com template do WooCommerce.', 'learndash-notifications' ),
		'hide'      => 0,
		'disabled'  => 0,
		'hide_on'   => array(),
		'default'   => 'Olá,',
	);

	return $fields;
});



add_filter( 'learndash_notifications_triggers', function( $triggers ) {
	$triggers['new_lesson_added'] = 'Nova aula adicionada ao curso';

	return $triggers;
});




add_action( 'save_post', 'abc_test_google', 99, 3 );
function abc_test_google( $n_id, $post, $update )
{
	error_log(print_r($post, true) . ' == é update? ' . wc_bool_to_string( $update ));
}
























use LearnDash_Notification\Notification;
use LearnDash_Notification\Trigger;

class Minha_Classe_de_Trigger_Nova_Aula extends Trigger {

	/**
	 * @var string
	 */
	protected $trigger = 'new_lesson_added';

	public function monitor( $post_ID, $post, $update = false ) {
		// não está pronto para notificar
		if ( 'publish' !== $post->post_status || empty( $post->post_content ) ) {
			$this->log( 'notificação inválida... post status ou conteúdo inválido.' );
			return;
		}

		if ( get_post_meta( $post_ID, '_notification_' . $this->trigger . '_sent', true ) ) {
			$this->log( 'notificação já enviada...' );
			return;
		}

		update_post_meta( $post_ID, '_notification_' . $this->trigger . '_sent', time() );

		$course_id = get_post_meta( $post_ID, 'course_id', true );

		// nenhum curso definido
		if ( ! $course_id ) {
			$this->log( 'curso não definido. Lesson ID: ' . $post_ID );
			return;
		}

		$course = get_post( $course_id );

		if ( ! $course ) {
			$this->log( 'Curso ' . $course_id . ' não existe. Lesson ID: ' . $post_ID );
			return;
		}
		$models = $this->get_notifications( $this->trigger );

		if ( empty( $models ) ) {
			return;
		}

		$this->log( '==========Job start========' );
		$this->log( sprintf( 'Process %d notifications', count( $models ) ) );

		foreach ( $models as $model ) {
			if ( $model->course_id !== 0 && absint( $course->ID ) !== $model->course_id ) {
				continue;
			}

			if ( $model->lesson_id !== 0 && $model->lesson_id !== absint( $lesson->ID ) ) {
				//this is not for me, as a lesson only belong to a course, so we don't need to check the course ID
				continue;
			}

			$user_ids = $this->get_users( $course_id );

			$this->log( sprintf( 'Process %d users in this course', count( $user_ids ) ) );

			foreach ( $user_ids as $user_id ) {
				$emails = $model->gather_emails( $user_id, $course->ID );

				$args   = [
					'user_id'   => $user_id,
					'course_id' => $course->ID,
					'lesson_id' => $post_ID,
				];
				if ( absint( $model->delay ) ) {
					$this->queue_use_db( $emails, $model, $args );
				} else {
					$this->send( $emails, $model, $args );
					$this->log( 'Done, moving next if any' );
				}
			}
		}
		$this->log( '==========Job end========' );
	}

	/**
	 * A base point for monitoring the events
	 * @return void
	 */
	function listen() {
		add_action( 'save_post_sfwd-lessons', [ &$this, 'monitor' ], 10, 3 );
		add_action( 'leanrdash_notifications_send_delayed_email', [ &$this, 'send_db_delayed_email' ] );
	}

	/**
	 * @param Notification $model
	 * @param $args
	 *
	 * @return bool
	 */
	protected function can_send_delayed_email( Notification $model, $args ) {
		return true;
	}

	/**
	 *
	 * @param $course_id
	 *
	 * @return array
	 */
	protected function get_users( $course_id ) {
		$query = learndash_get_users_for_course( $course_id );
		if ( $query instanceof \WP_User_Query ) {
			return $query->get_results();
		}

		return [];
	}
}










add_action( 'init', 'registrar_a_classe_extra_do_notifications' );
function registrar_a_classe_extra_do_notifications() {
	$trigger = new Minha_Classe_de_Trigger_Nova_Aula();

	$trigger->listen();
}