Tranaslate confirmation emails of Appointments plugin. Requires to edit file in order to set the translations per language and service id as there is no gui

wpmudev-app-notifiaction-wpml.php

<?php
/**
 * Plugin Name:       Appointments confirmation WPML translate
 * Plugin URI:        https://premium.wpmudev.org/
 * Description:       Tranaslate confirmation emails of Appointments plugin. Requires to edit file in order to set the translations per language and service id as there is no gui
 * Version:           1.0.0
 * Author:            Panos Lyrakis ( WPMUDEV )
 * Author URI:        https://premium.wpmudev.org/profile/panoskatws
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.html
 */

//Can be used as MU Plugin
//Thread: https://premium.wpmudev.org/forums/topic/translation-of-confirmation-emails

if( ! class_exists( 'APP_NOTIFICATION_WPML' ) ){

	class APP_NOTIFICATION_WPML{

		private static $_instance = null;

		public static function get_instance() {
            if ( is_null( self::$_instance ) ) {
                self::$_instance = new APP_NOTIFICATION_WPML();
            }

            return self::$_instance;
        }


        private function __construct() {

        	add_filter( 'app_confirmation_message', array( $this, 'confirmation_message' ), 10 ,3 );

        }


        public function confirmation_message( $body, $app, $app_id ){

        	$appointments = appointments();

			    $r = appointments_get_appointment( $app_id );
			    if ( ! $r ) {
				    return false;
			    }

          $location = appointments_get_location( $app->location );
          $location_address = ( is_object( $location ) && isset( $location->address ) ) ? $location->address : '';

          $args = array(
            'user'     	=> $app->name,
            'service'  	=> $appointments->get_service_name( $app->service ),
            'worker'   	=> appointments_get_worker_name( $app->worker ),
            'datetime' 	=> $app->start,
            'price'    	=> $app->price,
            'deposit'  	=> $appointments->get_deposit( $app->price ),
            'phone'    	=> $app->phone,
            'note'     	=> $app->note,
            'address'  	=> $app->address,
            'email'    	=> $app->email,
            'city'     	=> $app->city,
            'location'	=> $location_address
          );

          $body = $this->confirmation_message_translate( $app->service, ICL_LANGUAGE_CODE );
          $body = $this->replace_placeholders( $body, $args, 'confirmation-body', $app );

          $subject = $this->confirmation_subject_translate( $app->service, ICL_LANGUAGE_CODE );
          $subject = $this->replace_placeholders( $subject, $args, 'confirmation-subject', $r );

          return array(
            'subject' 	=> $subject,
            'body' 		=> $body
          );

		}


		/**
		* Translate confirmation body
		*/
		public function confirmation_message_translate( $service_id, $lang = 'en' ){

			$translations = array();

			// For Service 1
			$translations[ 1 ][ 'en' ] = 'My English confirmation message for service 1: DATE, LOCATION, DATE_TIME';
			$translations[ 1 ][ 'de' ] = 'My German confirmation message for service 1: DATE, LOCATION, DATE_TIME';

			// For Service 2
			$translations[ 2 ][ 'en' ] = 'My English confirmation message for service 2: DATE, LOCATION, DATE_TIME';
			$translations[ 2 ][ 'de' ] = 'My German confirmation message for service 2: DATE, LOCATION, DATE_TIME';

			return $translations[ $service_id ][ $lang ];

		}


		/**
		* Translate confirmation subject
		*/
		public function confirmation_subject_translate( $service_id, $lang = 'en' ){

			$translations = array();

			// For Service 1
			$translations[ 1 ][ 'en' ] = 'My English confirmation subject for service 1';
			$translations[ 1 ][ 'de' ] = 'My German confirmation subject for service 1';

			// For Service 2
			$translations[ 2 ][ 'en' ] = 'My English confirmation subject for service 2';
			$translations[ 2 ][ 'de' ] = 'My German confirmation subject for service 2';

			return $translations[ $service_id ][ $lang ];

		}


		function replace_placeholders( $text, $args, $notification_type, $object ) {
			$defaults = array(
				'user' => '',
				'service' => '',
				'worker' => '',
				'datetime' => '',
				'price' => '',
				'deposit' => '',
				'phone' => '',
				'note' => '',
				'address' => '',
				'email' => '',
				'city' => '',
				'location' => ''
			);

			$args = wp_parse_args( $args, $defaults );

			if ( ! empty( $args['price'] ) && ! empty( $args['deposit'] ) ) {
				$args['balance'] = (float) $args['price'] - (float) $args['deposit'];
			} else {
				$args['balance'] = ! empty( $args['price'] ) ? $args['price'] : 0.0;
			}

			$replacement = array(
				'/\bSITE_NAME\b/U'        => wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ),
				'/\bCLIENT\b/U'           => $args['user'],
				'/\bSERVICE_PROVIDER\b/U' => $args['worker'],
				'/\bSERVICE\b/U'          => preg_replace( '/\$(\d)/', '\\\$$1', $args['service'] ),
				'/\bDATE_TIME\b/U'        => mysql2date( get_option( 'date_format' ) . ' ' . get_option( 'time_format' ), $args['datetime'] ),
				'/\bDATE\b/U'			  => mysql2date( get_option( 'date_format' ), $args['datetime'] ),
				'/\bPRICE\b/U'            => $args['price'],
				'/\bDEPOSIT\b/U'          => $args['deposit'],
				'/\bBALANCE\b/U'          => $args['balance'],
				'/\bPHONE\b/U'            => $args['phone'],
				'/\bNOTE\b/U'             => $args['note'],
				'/\bADDRESS\b/U'          => $args['address'],
				'/\bEMAIL\b/U'            => $args['email'],
				'/\bCITY\b/U'             => $args['city'],
				'/\bLOCATION\b/U'         => $args['location'],
			);

			$replacement = apply_filters( 'appointments_notification_replacements_wpml', $replacement, $notification_type, $text, $object );

			foreach ( $replacement as $macro => $repl ) {
				$text = preg_replace( $macro, $repl, $text );
			}

			return $text;
		}

	}

	add_action( 'plugins_loaded', function(){
		APP_NOTIFICATION_WPML::get_instance();
	} );

}

?>