[CoursePress] - Custom Save And Exit Button

cp-custom-save-exit-button.php

<?php
/**
 * Plugin Name: [CoursePress] - Custom Save And Exit Button
 * Description: [CoursePress] - Custom Save And Exit Button
 * Author: Thobk @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/profile/tho2757
 * License: GPLv2 or later
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

add_action( 'plugins_loaded', 'wpmudev_cp_custom_save_exit_button_func', 100 );

function wpmudev_cp_custom_save_exit_button_func() {
	if( class_exists('CoursePress_Module') ){

		function wpmudev_cp_is_quiz_page($modules){
			$is_quiz_course = false;
			if( $modules && is_array( $modules ) ){
				foreach( $modules as $module_id ){
					if( 'input-quiz' === get_post_meta( $module_id, 'module_type', true ) ){
						$is_quiz_course = true;
						break;
					}
				}
			}

			return $is_quiz_course;
		}

		// stay quiz result page
		add_filter('coursepress_module_submit_atts', 'wpmudev_cp_show_result_page' );

		function wpmudev_cp_show_result_page($data){
			if( ! empty( $_REQUEST['_wp_http_referer'] ) && ! ( isset( $_REQUEST['finish'] ) || isset( $_REQUEST['next_unit'] ) || isset( $_REQUEST['next_page'] ) ) && ! empty( $_REQUEST['module_id'] ) && wpmudev_cp_is_quiz_page( $_REQUEST['module_id'] ) ){
				$data['data']['url'] = esc_url( $_REQUEST['_wp_http_referer'] );
			}

			return $data;
		}


		// change button text
		add_filter( 'coursepress_view_course_unit', 'wpmudev_cp_change_save_exit_button_name', 10, 3 );
		function wpmudev_cp_change_save_exit_button_name($content, $course_id, $post_id){
			if( wpmudev_cp_is_quiz_page( CoursePress_Data_Module::get_modules_ids_by_unit( $post_id ) ) ){
				$content = preg_replace('/\<a href\="#" class\="save-progress-and-exit"\>[\w&; ]*\<\/a\>/',
				sprintf( __('<a href="#" class="save-progress-and-exit">%s</a>', 'coursepress'), __( 'Save and see results', 'coursepress' ) ), $content);
			}
			return $content;
		}
	}
}