<?php
/**
 * @file
 * HTML Mail using PHPMailer. Messaging method plug-in.
 */


/**
 * Implementation of hook_messaging
 */
function messaging_phpmailer_messaging($op = 'info') {
  switch($op) {
    case 'send methods':
      $info['html_mail'] = array(
        'name' => t('HTML Mail'),
        'group' => 'mail',
        'destination' => 'mail',
        'send' => 'messaging_phpmailer_send_msg',
        'type' => MESSAGING_TYPE_PUSH,
        'glue' => "<br>", // don't use <br/> nor <br /> for maximum HTML email client compatibility
        'footer' => "<br><br>--",
        'description' => t('Send HTML e-mails using PHPMailer'),
      );
      return $info;
  }
}

/**
 * Send mail message to user account. Supports bulk sending
 *
 * @param $destination
 *   Single email address
 * @param $message
 *   Message array
 */
function messaging_phpmailer_send_msg($destination, $message, $params = array()) {
  
  $params = messaging_mail_params($message, $params);

  return messaging_phpmailer_drupal_mail($params['mailkey'], $destination, $message['subject'], $message['body'], $params['from'], $params['headers']);
}

/**
 * Send a message via PHPMailer.
 * This function mimics drupal_mail. We do not use drupal_mail instead because we want
 * to be able to send mail with both PHPMailer and MIMEMail.
 */
function messaging_phpmailer_drupal_mail($mailkey, $to, $subject, $body, $from = NULL, $headers = array()) {
  include_once './'. drupal_get_path('module', 'messaging_phpmailer') .'/PHPMailer/class.phpmailer.php';
  $mail = new PHPMailer();
  $mail->IsSMTP(); // telling the class to use SMTP
  $mail->CharSet = 'utf-8';
  $mail->ContentType = 'text/html';
  // Uncomment the following line to get debug information printed out during mail sends
  //$mail->SMTPDebug = TRUE;
  $host = variable_get('messaging_phpmailer_smtp_server', ini_get('SMTP'));
  if ($host) {
    $mail->Host = $host; // SMTP server
  }
  else {
    watchdog('messaging', t('SMTP server cannot be reached.'), WATCHDOG_ERROR);
    return FALSE;
  }

  // Theme the mail message
  list($subject, $body) = theme('messaging_phpmailer', $subject, $body, $from, $mailkey);

  // To prevent e-mail from looking like spam, the addresses in the Sender and
  // Return-Path headers should have a domain authorized to use the originating
  // SMTP server.  Errors-To is redundant, but shouldn't hurt.
  $default_from = variable_get('site_mail', ini_get('sendmail_from'));
  if ($default_from) {
    $defaults['From'] = $defaults['Reply-To'] = $defaults['Sender'] = $defaults['Return-Path'] = $defaults['Errors-To'] = $default_from;
  }
  if ($from) {
    $defaults['From'] = $defaults['Reply-To'] = $from;
  }
  $headers = array_merge($defaults, $headers);
  // Custom hook traversal to allow pass by reference
  foreach (module_implements('mail_alter') as $module) {
    $function = $module .'_mail_alter';
    $function($mailkey, $to, $subject, $body, $from, $headers);
  }

  $mail->From = $defaults['From'];
  $mail->FromName = $defaults['From'];
  $mail->AddAddress($to);

  if(!empty($headers['Message-ID'])) {
    $mail->AddCustomHeader('Message-ID: ' . $headers['Message-ID']);
  }
  if(!empty($headers['Reply-To'])) {
    $mail->AddReplyTo($headers['Reply-To']);
  }

  // Strip HTML out of $body for plaintext equivalent of HTML email.
  $mail->AltBody = messaging_html_to_text($body);

  // The subject has been already filtered by messaging module
  $mail->Subject = $subject;
  $mail->Body = str_replace("\r", '', $body);
  return $mail->Send();
}

/**
 * default theme messaging_phpmailer
 */
function theme_messaging_phpmailer($subject, $body, $from, $mailkey) {
  return array($subject, $body);
}