Code-Snippets-Functions/Execute a function on a child site/LearnDash LMS/autocomplete-course-lesson-and-topics.txt

/**
 * LearnDash Auto Complete Course Lessons and Topics
 */
add_action( 'template_redirect', function() {

	// Comma sperated course_ids to exclude from logic;
	$excluded_courses = array();

	$user_id = get_current_user_id();
	if ( ! $user_id ) {
		return false;
	}

	/**
	 * Never trust the global $post object. Too many plugins 
	 * override this with no WP_Post content.
	 */
	$current_step_id = get_the_ID();
	if ( empty( $current_step_id ) ) {
		return false;
	}

	// Get the current course step POST and make sure it is one from LD.
	$current_step_post = get_post( $current_step_id );
	if ( ( ! $current_step_post ) || ( ! is_a( $current_step_post, 'WP_Post' ) ) || ( ! in_array( $current_step_post->post_type, learndash_get_post_types( 'course_steps' ) ) ) ) {
		return false;
	}

	// Check that the current user has access.
	if ( ! sfwd_lms_has_access( $current_step_id, $user_id ) ) {
		return false;
	}

	// Get the course step
	$course_id = learndash_get_course_id(); 
	if ( ! $course_id ) {
		return false;
	}

	// Check that we are not excluding this course.
	if ( in_array( $course_id, $excluded_courses ) ) {
		return false;
	}

	/**
	 * Get the Mark Complete form/button.
	 * If this does NOT return empty then the mark complete
	 * button would be shown on the page to the user. We use
	 * that to know if we can automatically mark the step
	 * complete here.
	 */
	$mark_html = learndash_mark_complete( $current_step_post );
	if ( ! empty( $mark_html ) ) {
		return learndash_process_mark_complete( $user_id, $current_step_id );
	}

	return false;
});