adding theming

booking.MailSystemInterface.inc

@@ -0,0 +1,42 @@
+<?php
+ 
+/**
+* Implements MailSystemInterface
+* Taken from http://www.ardoubleyou.com/blog/how-programmatically-send-e-mail-using-html-and-text-content-type-drupal-7
+*/
+class BookingMailSystem implements MailSystemInterface {
+  /** 
+   * Concatenate and wrap the e-mail body for plain-text mails
+   * @param $message
+   *  A message array, as described in hook_mail_alter().
+   *
+   *  @return
+   *    The formatted $message
+   */  
+  public function format(array $message) {
+    $message['body'] = implode("\n\n", $message['body']);
+    return $message;
+  }
+ 
+  /** 
+   * Send an e-mail message, using Drupal variables and default settings.
+   * @see drupal_mail*()
+   * @param $message
+   *  A message array, as described in hook_mail_alter()
+   *  @return
+   *    TRUE if the mail was successfully accepted, otherwise FALSE
+   */  
+  public function mail(array $message) {
+    $mimeheaders = array();
+    foreach($message['headers'] as $name => $value) {
+      $mimeheaders[] = $name . ': ' . mime_header_encode($value);
+    }   
+    $line_endings = variable_get('mail_line_endings', MAIL_LINE_ENDINGS);
+    return mail(
+      $message['to'],
+      mime_header_encode($message['subject']),
+      preg_replace('@\r?\n@', $line_endings, $message['body']),
+      join("\n", $mimeheaders)
+    );
+  }
+}