Core::bp_course_resume( $course_id )

	public function bp_course_resume( $course_id ) {

		if ( is_user_logged_in() ) {
			if ( ! empty( $course_id ) ) {
				$user           = wp_get_current_user();
				$step_course_id = $course_id;
				$course         = get_post( $step_course_id );

				$lession_list       = learndash_get_lesson_list( $course_id );
				$url = bp_ld_sync()->bp_ld_custom_continue_url_arr( $course_id, $lession_list );

				if ( isset( $course ) && 'sfwd-courses' === $course->post_type ) {
					//$last_know_step = get_user_meta( $user->ID, 'learndash_last_known_course_' . $step_course_id, true );
					$last_know_step = '';

					// User has not hit a LD module yet
					if ( empty( $last_know_step ) ) {

						if ( isset( $url ) && '' !== $url ) {
							return $url;
						} else {
							return '';
						}
					}

					//$step_course_id = 0;
					// Sanity Check
					if ( absint( $last_know_step ) ) {
						$step_id = $last_know_step;
					} else {
						if ( isset( $url ) && '' !== $url ) {
							return $url;
						} else {
							return '';
						}
					}

					$last_know_post_object = get_post( $step_id );

					// Make sure the post exists and that the user hit a page that was a post
					// if $last_know_page_id returns '' then get post will return current pages post object
					// so we need to make sure first that the $last_know_page_id is returning something and
					// that the something is a valid post
					if ( null !== $last_know_post_object ) {

						$post_type        = $last_know_post_object->post_type; // getting post_type of last page.
						$label            = get_post_type_object( $post_type ); // getting Labels of the post type.
						$title            = $last_know_post_object->post_title;
						$resume_link_text = __( 'RESUME', 'buddyboss' );

						if ( function_exists( 'learndash_get_step_permalink' ) ) {
							$permalink = learndash_get_step_permalink( $step_id, $step_course_id );
						} else {
							$permalink = get_permalink( $step_id );
						}

						return $permalink;
					}
				}
			}
		} else {
			$course_price_type   = learndash_get_course_meta_setting( $course_id, 'course_price_type' );
			if ( $course_price_type == 'open' ) {

				$lession_list       = learndash_get_lesson_list( $course_id );
				$url = bp_ld_sync()->bp_ld_custom_continue_url_arr( $course_id, $lession_list );
				return $url;
			}
		}

		return '';
	}