<?php
/**
 * Shop Article
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

WBClass::load('WBShop'
    , 'WBShop_Config');

/**
 * Shop Article
 *
 *
 * @version 0.1.0
 * @package WB
 * @subpackage base
 */
class WBShop_Article extends WBStdClass
{
    /**
     * Shop config
     * @var WBShop_Config
     */
    private $sc;

    /**
     * Database access
     * @var WBDatasource_Table
     */
    private $table;

    /**
     * id of current cart
     * @var string
     */
    private $id =   '__none';

    /**
     * the article's data
     * @var array
     */
    private $data   =   array();

    /**
     * primary key of article in table
     * @var string
     */
    private $primary    =   null;

    /**
     * constructor
     *
     * Instantiate table object
     */
    public function __construct()
    {
        $this->sc       =   WBShop_Config::singleton();
        $this->table    =   WBClass::create('WBDatasource_Table');
        $this->primary  =   $this->table->getIdentifier($this->sc->getItemTable());
    }

    /**
     * Get primary key
     *
     * Receive primary column name of article table
     *
     * @return string
     */
    public function getIdentifer()
    {
        return $this->primary;
    }

    /**
     * Load article data
     *
     * Try to load article data from database
     *
     * @return WBShop_Article
     */
    public function load($id)
    {
        $this->data =   array();
        if (empty($id)) {
            return $this;
        }

        $list       =   $this->table->get($this->sc->getItemTable(), $id);
        if (1 == count($list)) {
            $this->data =   $list[0];
        }
        return $this;
    }

    /**
     * Get Id of current article
     *
     * Receive id of loaded article or null, if no article was loaded
     *
     * @return string|null
     */
    public function getId()
    {
        if (isset($this->data[$this->primary])) {
            return $this->data[$this->primary];
        }

        return null;
    }

    /**
     * receive article data
     *
     * @return array
     */
    public function get()
    {
        return $this->data;
    }
}