<?php
/*********************************************************************
    class.thread.php

    Ticket thread
    TODO: move thread related logic here from class.ticket.php

    Peter Rotich <peter@osticket.com>
    Copyright (c)  2006-2012 osTicket
    http://www.osticket.com

    Released under the GNU General Public License WITHOUT ANY WARRANTY.
    See LICENSE.TXT for details.

    vim: expandtab sw=4 ts=4 sts=4:
**********************************************************************/
include_once(INCLUDE_DIR.'class.ticket.php');

Class ThreadEntry {

    var $id;
    var $ht;

    var $staff;
    var $ticket;
    
    function ThreadEntry($id, $type='', $ticketId=0) {
        $this->load($id, $type, $ticketId);
    }

    function load($id=0, $type='', $ticketId=0) {

        if(!$id && !($id=$this->getId()))
            return false;

        $sql='SELECT thread.* '
            .' ,count(DISTINCT attach.attach_id) as attachments '
            .' FROM '.TICKET_THREAD_TABLE.' thread '
            .' LEFT JOIN '.TICKET_ATTACHMENT_TABLE.' attach 
                ON (thread.ticket_id=attach.ticket_id 
                        AND thread.id=attach.ref_id 
                        AND thread.thread_type=attach.ref_type) '
            .' WHERE  thread.id='.db_input($id);

        if($type)
            $sql.=' AND thread.thread_type='.db_input($type);

        if($ticketId)
            $sql.=' AND thread.ticket_id='.db_input($ticketId);

        $sql.=' GROUP BY thread.id ';
        
        if(!($res=db_query($sql)) || !db_num_rows($res))
            return false;

        $this->ht = db_fetch_array($res);
        $this->id = $this->ht['id'];

        $this->staff = $this->ticket = null;

        return true;
    }

    function reload() {
        return $this->load();
    }

    function getId() {
        return $this->id;
    }

    function getPid() {
        return $this->ht['pid'];
    }

    function getType() {
        return $this->ht['thread_type'];
    }

    function getSource() {
        return $this->ht['source'];
    }

    function getPoster() {
        return $this->ht['poster'];
    }

    function getTitle() {
        return $this->ht['title'];
    }

    function getBody() {
        return $this->ht['body'];
    }

    function getCreateDate() {
        return $this->ht['created'];
    }

    function getUpdateDate() {
        return $this->ht['updated'];
    }

    function getNumAttachments() {
        return $this->ht['attachments'];
    }

    function getTicketId() {
        return $this->ht['ticket_id'];
    }

    function getTicket() {

        if(!$this->ticket && $this->getTicketId())
            $this->ticket = Ticket::lookup($this->getTicketId());

        return $this->ticket;
    }

    function getStaffId() {
        return $this->ht['staff_id'];
    }

    function getStaff() {
      
        if(!$this->staff && $this->getStaffId())
            $this->staff = Staff::lookup($this->getStaffId());

        return $this->staff;
    }

    /* variables */

    function asVar() {
        return $this->getBody();
    }

    function getVar($tag) {
        global $cfg;

        if($tag && is_callable(array($this, 'get'.ucfirst($tag))))
            return call_user_func(array($this, 'get'.ucfirst($tag)));

        switch(strtolower($tag)) {
            case 'create_date':
                return Format::date(
                        $cfg->getDateTimeFormat(),
                        Misc::db2gmtime($this->getCreateDate()),
                        $cfg->getTZOffset(),
                        $cfg->observeDaylightSaving());
                break;
            case 'update_date':
                return Format::date(
                        $cfg->getDateTimeFormat(),
                        Misc::db2gmtime($this->getUpdateDate()),
                        $cfg->getTZOffset(),
                        $cfg->observeDaylightSaving());
                break;
        }

        return false;
    }

    /* static calls */

    function _lookup($id, $type='', $tid=0) {
        return ($id && is_numeric($id) 
                && ($e = new ThreadEntry($id, $type, $tid)) && $e->getId()==$id)?$e:null;
    }
}

/* Message - Ticket thread entry of type message */
class Message extends ThreadEntry {

    function Message($id, $ticketId=0) {
        parent::ThreadEntry($id, 'M', $ticketId);
    }

    function getSubject() {
        return $this->getTitle();
    }

    function lookup($id, $tid) {
        return parent::_lookup($id, 'M', $tid);
    }
}

/* Response - Ticket thread entry of type response */
class Response extends ThreadEntry {

    function Response($id, $ticketId=0) {
        parent::ThreadEntry($id, 'R', $ticketId);
    }

    function getSubject() {
        return $this->getTitle();
    }

    function getRespondent() {
        return $this->getStaff();
    }

    function lookup($id, $tid) {
        return parent::_lookup($id, 'R', $tid);
    }
}

/* Note - Ticket thread entry of type note (Internal Note) */
class Note extends ThreadEntry {

    function Note($id, $ticketId=0) {
        parent::ThreadEntry($id, 'N', $ticketId);
    }

    function getMessage() {
        return $this->getBody();
    }

    function lookup($id, $tid) {
        return parent::_lookup($id, 'N', $tid);
    }
}