<?php
  
  /*
   * This file is part of the Monolog package.
   *
   * (c) Jordi Boggiano <j.boggiano@seld.be>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Monolog\Handler;
  
  use Monolog\Logger;
  
  /**
   * SwiftMailerHandler uses Swift_Mailer to send the emails
   *
   * @author Gyula Sallai
   */
  class SwiftMailerHandler extends MailHandler
  {
      protected $mailer;
      protected $message;
  
      /**
       * @param \Swift_Mailer           $mailer  The mailer to use
       * @param callable|\Swift_Message $message An example message for real messages, only the body will be replaced
       * @param integer                 $level   The minimum logging level at which this handler will be triggered
       * @param Boolean                 $bubble  Whether the messages that are handled can bubble up the stack or not
       */
      public function __construct(\Swift_Mailer $mailer, $message, $level = Logger::ERROR, $bubble = true)
      {
          parent::__construct($level, $bubble);
          $this->mailer  = $mailer;
          if (!$message instanceof \Swift_Message && is_callable($message)) {
              $message = call_user_func($message);
          }
          if (!$message instanceof \Swift_Message) {
              throw new \InvalidArgumentException('You must provide either a Swift_Message instance or a callable returning it');
          }
          $this->message = $message;
      }
  
      /**
       * {@inheritdoc}
       */
      protected function send($content, array $records)
      {
          $message = clone $this->message;
          $message->setBody($content);
  
          $this->mailer->send($message);
      }
  }