remiwok

Hello

Step 1 :
Disable mail auto
add_action( 'woocommerce_email', array(get_class(),'disable_auto_email_customer_completed_order') );

    public static function disable_auto_email_customer_completed_order( $email_class ) {

      remove_action( 'woocommerce_order_status_completed_notification', array( $email_class->emails['WC_Email_Customer_Completed_Order'], 'trigger' ) ); // cancels automatic email of order complete status update.
    }

Step 2 :
Send manually with switch lang and trad strings

     add_action( 'woocommerce_order_actions', array(get_class(),'add_order_action') );
       add_action( 'woocommerce_order_action_send_wc_email_customer_completed_order', array(get_class(),'send_wc_email_customer_completed_order') );

    public static function add_order_action( $actions ) {
      $actions['send_wc_email_customer_completed_order'] = 'Envoyer l\'email de commande terminée';
      return $actions;
    }

    public static function send_wc_email_customer_completed_order( $order ) {
      global $sitepress;

      $order_id = $order->get_id();
      $lang = get_post_meta( $order_id, 'wpml_language');
      if (!empty($lang)) {
        $sitepress->switch_lang( $lang[0], true );
      }

      $allmails = WC()->mailer()->emails;
      $email = $allmails['WC_Email_Customer_Completed_Order'];
      $email->settings['subject'] = __('Votre commande est dans les starting-blocks','admin_texts_woocommerce_customer_completed_order_settings');
      $email->settings['heading'] = __('Et une commande prête à partir, une !','admin_texts_woocommerce_customer_completed_order_settings');
      $email->settings['additional_content'] = __('Encore merci de votre confiance.

Team hellowall','admin_texts_woocommerce_customer_completed_order_settings');

      $email->trigger( $order_id );
      $order->add_order_note( 'Email "Commande terminée" envoyé' );
    }
    public static function add_order_action( $actions ) {
      $actions['send_wc_email_customer_completed_order'] = 'Envoyer l\'email de commande terminée';
      return $actions;
    }

    public static function send_wc_email_customer_completed_order( $order ) {
      global $sitepress;

      $order_id = $order->get_id();
      $lang = get_post_meta( $order_id, 'wpml_language');
      if (!empty($lang)) {
        $sitepress->switch_lang( $lang[0], true );
      }

      $allmails = WC()->mailer()->emails;
      $email = $allmails['WC_Email_Customer_Completed_Order'];
      $email->settings['subject'] = __('Votre commande est dans les starting-blocks','admin_texts_woocommerce_customer_completed_order_settings');
      $email->settings['heading'] = __('Et une commande prête à partir, une !','admin_texts_woocommerce_customer_completed_order_settings');
      $email->settings['additional_content'] = __('Encore merci de votre confiance.

Team hellowall','admin_texts_woocommerce_customer_completed_order_settings');

      $email->trigger( $order_id );
      $order->add_order_note( 'Email "Commande terminée" envoyé' );
    }