<?php
/**
 * Wombat Incident Ticket System Ticket List Exporter
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage content
 */

/**
 * Load classes
 */
WBClass::load('WBITS'
        , 'WBDatasource_Pager'
    );

/**
 * Wombat Incident Ticket System Ticket List Exporter
 *
 * @version 1.0.0
 * @package WB
 * @subpackage content
 */
class WBITS_TicketList_Exporter extends WBStdClass
{
    /**
     * Pager
     * @var WBDatasource_Pager
     */
    private $pager;


    /**
     * Current Config
     * @var array
     */
    protected $config;

    /**
     * Constructor
     *
     */
    final public function __construct()
    {
        $this->config   =   WBITS::getConfig();
        $this->useNamespace($this->config['namespace']);

        $this->init();
    }

    /**
     * 2nd Constructor
     */
    protected function init()
    {
    }

    /**
     * Set Pager
     *
     * Pager provides list of tickets
     * @param WBDatasource_Pager
     */
    final public function setPager(WBDatasource_Pager $pager)
    {
        $this->pager    =   $pager;
    }

    final public function useNamespace($ns = '')
    {
        $ns =   WBITS::selectNamespace($ns);
    }

    /**
     * Export Ticket List
     *
     */
    final public function export()
    {
        $this->onExportStart();
        $info   =   $this->pager->browse('__first');
        for ($i = 1; $i < $info['pages']; ++$i) {
            $list   =   $this->pager->get();
            foreach ($list as $l) {
                $this->exportListItem($l);
            }
            $this->pager->browse('__next');
        }
        $list   =   $this->pager->get();
        foreach ($list as $l) {
            $this->exportListItem($l);
        }
        $this->pager->browse('__first');

        $this->onExportEnd();
    }

    /**
     * Event Handler to Start Export
     *
     */
    protected function onExportStart()
    {
    }

    /**
     * Event Handler for Each List Item
     *
     * @param array list item data
     */
    protected function exportListItem($item)
    {
    }

    /**
     * Event Handler at End of Export
     *
     */
    protected function onExportEnd()
    {
    }
}