class RedmineEmailGrabber extends Redmine
{
    /**
     * @param string $subject
     * @return int
     */
    public function getTicketIdFromSubject( $subject )
    {
        $pattern = '/([\w\s]*)\s-\s[A-z]*\s#(?P<TicketId>\d*)/';

        if( preg_match( $pattern, $subject, $matches ) )
        {
            if( count( $matches ) === 4 )
            {
                return $matches['TicketId'];
            }
        }

        return 0;
    }

    /**
     * @param integer $id
     * @param string $note
     * @throws Exception
     */
    public function addNoteToIssue( $id, $note )
    {
        $issue = $this->getIssue( $id );
        $issue->notes = substr( $note, 0, 3000 ); // ab 3.000 Zeichen gibt es einen "500 internal Server Error"
        $this->updateIssue( $issue, $id );
    }
}