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Edit File: class-lp-emails.php

<?php
/**
 * Base class of LearnPress emails and helper functions.
 *
 * @author  ThimPress
 * @package LearnPress/Classes
 * @version 3.0.1
 * @editor tungnx
 * @modify 4.1.3
 */

/**
 * Prevent loading this file directly
 */
defined( 'ABSPATH' ) || exit();

if ( ! class_exists( 'LP_Emails' ) ) {
	/**
	 * Class LP_Emails
	 */
	class LP_Emails {

/**
		 * List of all email actions.
		 *
		 * @var array
		 */
		public $emails = array();

/**
		 * The single instance of the class
		 *
		 * @var LP_Emails
		 */
		protected static $_instance = null;

/**
		 * @var LP_Email
		 */
		protected $_current = null;

/**
		 * @var null
		 */
		protected $_last_current = null;

/**
		 * LP_Emails constructor.
		 */
		protected function __construct() {
			if ( did_action( 'learn-press/emails-init' ) ) {
				return;
			}
			include_once LP_PLUGIN_PATH . 'inc/emails/class-lp-email.php';

$this->register_emails();

do_action( 'learn-press/emails-init', $this );
		}

public function register_emails() {
			include_once 'emails/types/class-lp-email-type-order.php';
			include_once 'emails/types/class-lp-email-type-order-student.php';
			include_once 'emails/types/class-lp-email-type-order-guest.php';
			include_once 'emails/types/class-lp-email-type-order-admin.php';
			include_once 'emails/types/class-lp-email-type-order-instructor.php';
			include_once 'emails/types/class-lp-email-type-enrolled-course.php';
			include_once 'emails/types/class-lp-email-type-finished-course.php';
			include_once 'emails/types/class-lp-email-type-become-an-instructor.php';

// New order
			$this->emails['LP_Email_New_Order_Admin']      = include_once 'emails/admin/class-lp-email-new-order-admin.php';
			$this->emails['LP_Email_New_Order_User']       = include_once 'emails/student/class-lp-email-new-order-user.php';
			$this->emails['LP_Email_New_Order_Instructor'] = include_once 'emails/instructor/class-lp-email-new-order-instructor.php';
			$this->emails['LP_Email_New_Order_Guest']      = include_once 'emails/guest/class-lp-email-new-order-guest.php';

// Processing order
			$this->emails['LP_Email_Processing_Order_User']  = include_once 'emails/student/class-lp-email-processing-order-user.php';
			$this->emails['LP_Email_Processing_Order_Guest'] = include_once 'emails/guest/class-lp-email-processing-order-guest.php';

// Completed order
			$this->emails['LP_Email_Completed_Order_Admin'] = include_once 'emails/admin/class-lp-email-completed-order-admin.php';
			$this->emails['LP_Email_Completed_Order_User']  = include_once 'emails/student/class-lp-email-completed-order-user.php';
			$this->emails['LP_Email_Completed_Order_Guest'] = include_once 'emails/guest/class-lp-email-completed-order-guest.php';

// Cancelled order
			$this->emails['LP_Email_Cancelled_Order_Admin']      = include_once 'emails/admin/class-lp-email-cancelled-order-admin.php';
			$this->emails['LP_Email_Cancelled_Order_Instructor'] = include_once 'emails/instructor/class-lp-email-cancelled-order-instructor.php';
			$this->emails['LP_Email_Cancelled_Order_User']       = include_once 'emails/student/class-lp-email-cancelled-order-user.php';
			$this->emails['LP_Email_Cancelled_Order_Guest']      = include_once 'emails/guest/class-lp-email-cancelled-order-guest.php';

// Enrolled course
			$this->emails['LP_Email_Enrolled_Course_Admin']      = include_once 'emails/admin/class-lp-email-enrolled-course-admin.php';
			$this->emails['LP_Email_Enrolled_Course_Instructor'] = include_once 'emails/instructor/class-lp-email-enrolled-course-instructor.php';
			$this->emails['LP_Email_Enrolled_Course_User']       = include_once 'emails/student/class-lp-email-enrolled-course-user.php';

// Finished course
			$this->emails['LP_Email_Finished_Course_Admin']      = include_once 'emails/admin/class-lp-email-finished-course-admin.php';
			$this->emails['LP_Email_Finished_Course_Instructor'] = include_once 'emails/instructor/class-lp-email-finished-course-instructor.php';
			$this->emails['LP_Email_Finished_Course_User']       = include_once 'emails/student/class-lp-email-finished-course-user.php';

// Become An Instructor
			$this->emails['LP_Email_Become_An_Instructor'] = include_once 'emails/admin/class-lp-email-become-an-instructor.php';
			$this->emails['LP_Email_Instructor_Accepted']  = include_once 'emails/instructor/class-lp-email-instructor-accepted.php';
			$this->emails['LP_Email_Instructor_Denied']    = include_once 'emails/instructor/class-lp-email-instructor-denied.php';

// Forgot Password
			$this->emails['LP_Email_Reset_Password'] = include_once 'emails/types/class-lp-email-reset-password.php';

do_action( 'learnpress/emails/register', $this->emails );
		}

public function set_current( $id ) {
			$this->_last_current = $this->_current;

if ( $id instanceof LP_Email ) {
				$this->_current = $id->id;
			} else {
				$this->_current = $id;
			}
		}

/**
		 * @return bool|LP_Email
		 */
		public function get_current() {
			return self::get_email( $this->_current );
		}

public function reset_current() {
			$this->_current = $this->_last_current;
		}

/**
		 * @param string $id
		 *
		 * @return LP_Email|bool
		 */
		public static function get_email( $id ) {
			static $emails = array();

if ( empty( $emails[ $id ] ) ) {
				foreach ( self::instance()->emails as $class => $email ) {
					$emails[ $email->id ] = $class;
				}
			}

return ! empty( $emails[ $id ] ) ? self::instance()->emails[ $emails[ $id ] ] : false;
		}

/**
		 * Get image header in general settings.
		 *
		 * @return string
		 */
		public function get_image_header() {
			$image = LP_Settings::instance()->get( 'emails_general.header_image' );

if ( ! empty( $image ) ) {
				$image = wp_get_attachment_image_url( $image, 'full' );
			}

return $image;
		}

/**
		 * Main LP_Mail Instance, ensures only one instance of LP_Mail is loaded or can be loaded.
		 *
		 * @since 3.0.0
		 *
		 * @return LP_Emails
		 */
		public static function instance() {

if ( is_null( self::$_instance ) ) {
				self::$_instance = new self();
			}

return self::$_instance;
		}

}