<?php
/**
 * FAQ Access
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @package Wombat
 */

// WBClass::load('Airclip');

/**
 * FAQ Access
 *
 * @version 0.1.0
 * @package Wombat
 */
class WBDatasource_FAQ extends WBStdClass implements WBDatasource_Callback
{
    const TABLE_FAQ     =   'faq';
    const TABLE_FAQTYPE =   'faqtype';

    /**
     * Table Access
     * @var WBDatasource_Table
     */
    private $table;

    /**
     * Current Limit per Page / Fetch
     * @var int
     */
    private $limit  =   10;

    /**
     * Current Base Clause
     * @var array
     */
    private $clause =   array(
                            array(
                                    'field' => 'enabled',
                                    'value' => 1
                                )
                            );

    /**
     * Constructor
     *
     * @param array
     */
    public function __construct($parameter = array())
    {
        if (empty($parameter['table'])) {
            $parameter['table'] =   WBClass::create('WBDatasource_Table', $parameter);
        }
        $this->table    =   $parameter['table'];
    }

    /**
     * Set Fetch Limit
     *
     * @param int
     */
    public function setLimit($limit)
    {
        $this->limit    =   $limit;
    }

    /**
     * Get Base Clause
     *
     * @return array
     */
    public function getClause()
    {
        return $this->clause;
    }

    /**
     * Set Base Clause
     *
     * @param array
     */
    public function setClause($clause)
    {
        $this->clause   =   $clause;
    }

    /**
     * Get List Of Records For Type(s)
     *
     * Fetch FAQ items and return then
     *
     * @param array list of types
     * @return array
     */
    public function get4Type($type = array('public'))
    {
        if (!is_array($type)) {
            $type   =   array($type);
        }
        if ('public' == $type[0]) {
            $type   =   $this->getPublicTypeId();
        }
        $clause     =   $this->clause;
        $clause[]   =   array(
                                'field'     =>  $this->table->getIdentifier(self::TABLE_FAQTYPE, true),
                                'relation'  =>  'in',
                                'value'     =>  $type
                            );

        $option =   array(
                            'limit'     =>  $this->limit,
                            'order'     =>  array(
                                                    'field' =>  'changed',
                                                    'asc'   =>  0
                                                ),
                            'callback'  =>  $this
                        );
        return $this->table->get(self::TABLE_FAQ, null, null, $clause, $option);
    }

    /**
     * Get Ids of Public Types
     *
     * @return array
     */
    private function getPublicTypeId()
    {
        $clause     =   array();
        $clause[]   =   array(
                                'field'     =>  'requireuser',
                                'relation'  =>  'in',
                                'value'     =>  array('anybody', 'anonymous')
                            );
        return $this->table->getIds(self::TABLE_FAQTYPE, null, $clause);
    }

    /**
     * Callback When Receive Whole Entry
     *
     * @param string $src name of source
     * @param string $key
     * @param array $data loaded data
     * @return bool true on success
     */
    public function onDatasourceGet($src, $key, &$data)
    {
        if (self::TABLE_FAQ != $src) {
            return true;
        }
        $data['question_url']   =   urlencode(str_replace(array('?', '/'), array('', '_'), $data['question']));
    }
}