woocommerce/includes/emails/class-wc-email-customer-note.php

<?php

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

if ( ! class_exists( 'WC_Email_Customer_Note' ) ) :

/**
 * Customer Note Order Email
 *
 * Customer note emails are sent when you add a note to an order.
 *
 * @class 		WC_Email_Customer_Note
 * @version		2.0.0
 * @package		WooCommerce/Classes/Emails
 * @author 		WooThemes
 * @extends 	WC_Email
 */
class WC_Email_Customer_Note extends WC_Email {

	var $customer_note;

	/**
	 * Constructor
	 *
	 * @access public
	 * @return void
	 */
	function __construct() {

		$this->id 				= 'customer_note';
		$this->title 			= __( 'Customer note', 'woocommerce' );
		$this->description		= __( 'Customer note emails are sent when you add a note to an order.', 'woocommerce' );

		$this->template_html 	= 'emails/customer-note.php';
		$this->template_plain 	= 'emails/plain/customer-note.php';

		$this->subject 			= __( 'Note added to your {site_title} order from {order_date}', 'woocommerce');
		$this->heading      	= __( 'A note has been added to your order', 'woocommerce');

		// Triggers
		add_action( 'woocommerce_new_customer_note_notification', array( $this, 'trigger' ) );

		// Call parent constructor
		parent::__construct();
	}

	/**
	 * trigger function.
	 *
	 * @access public
	 * @return void
	 */
	function trigger( $args ) {

		if ( $args ) {

			$defaults = array(
				'order_id' 		=> '',
				'customer_note'	=> ''
			);

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

			extract( $args );

			$this->object 		= wc_get_order( $order_id );
			$this->recipient	= $this->object->billing_email;
			$this->customer_note = $customer_note;

			$this->find['order-date']      = '{order_date}';
			$this->find['order-number']    = '{order_number}';
			
			$this->replace['order-date']   = date_i18n( wc_date_format(), strtotime( $this->object->order_date ) );
			$this->replace['order-number'] = $this->object->get_order_number();
		}

		if ( ! $this->is_enabled() || ! $this->get_recipient() ) {
			return;
		}

		$this->send( $this->get_recipient(), $this->get_subject(), $this->get_content(), $this->get_headers(), $this->get_attachments() );
	}

	/**
	 * get_content_html function.
	 *
	 * @access public
	 * @return string
	 */
	function get_content_html() {
		ob_start();
		wc_get_template( $this->template_html, array(
			'order' 		=> $this->object,
			'email_heading' => $this->get_heading(),
			'customer_note' => $this->customer_note,
			'sent_to_admin' => false,
			'plain_text'    => false
		) );
		return ob_get_clean();
	}

	/**
	 * get_content_plain function.
	 *
	 * @access public
	 * @return string
	 */
	function get_content_plain() {
		ob_start();
		wc_get_template( $this->template_plain, array(
			'order' 		=> $this->object,
			'email_heading' => $this->get_heading(),
			'customer_note' => $this->customer_note,
			'sent_to_admin' => false,
			'plain_text'    => true
		) );
		return ob_get_clean();
	}
}

endif;

return new WC_Email_Customer_Note();