Resend WooCommerce order_id, a useful snippet

resend_woocommerce_order_id.php

<?php
/**
* Trigger WooCommerce order email programatically.
*
* @param INT order_id - WooCommerce WC_Order order id
*/ 
function prefix_send_woocommerce_order_emails( $order_id ) {

$wc_emails = WC()->mailer()->get_emails();
if ( empty( $wc_emails ) ) return;

  $order = wc_get_order( $order_id );
  
  if( !( $order instanceof WC_Order ) ) return;
  
  if ( $order->has_status( 'on-hold' ) )
      $email_id = 'customer_on_hold_order';
  elseif ( $order->has_status( 'processing' ) )
      $email_id = 'customer_processing_order';
  elseif ($order->has_status( 'completed' ) )
      $email_id = 'customer_completed_order';
  else
      $email_id = "nothing";

  foreach  ($wc_emails as $wc_mail )
      if ( $wc_mail->id == $email_id )
          $wc_mail->trigger( $order->get_id() );

}