<?php
/**
 * Wombat Form Processor Fiddler
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@schaufelberger.de>
 * @package WB
 */

WBClass::load(
            'WBFormProcessor_Fiddler'
        );

/**
 * Wombat Form Processor Fiddler
 *
 * @version 0.3.0
 * @package WB
 */
class WBFormProcessor_Fiddler_Mandator extends WBFormProcessor_Fiddler
{
    /**
     * Mandator
     *
     * @var WBMandator
     */
    private $mandator;

    /**
     * Constructor
     *
     * Empty function
     *
     * @param array
     */
    public function __construct($parameter = array())
    {
        if (!is_array($parameter)) {
            $parameter  =   array();
        }

        if (empty($parameter['mandator'])) {
            $parameter['mandator']  =   WBClass::create('WBMandator');
        }
        $this->mandator =   $parameter['mandator'];
    }

    /**
     * Adjust Form Element List
     *
     * @param string name
     * @param array form values
     * @param array list of form elements to alter
     */
    public function mangleFormElementList($name, $values, &$list)
    {
        if (WBMandator::INVALID_ID == $this->mandator->getId()) {
            return;
        }

        $pMandator  =   $this->mandator->getIdentifier();
        foreach ($list as $element => &$l) {
            if (empty($l['attributesource'])) {
                continue;
            }
            foreach($l['attributesource'] as &$s) {
                if ('Table' != $s['name']) {
                    continue;
                }

                $primary    =   $this->mandator->getIdentifier($s['table']);
                // has table mandator feature?
                if (!is_array($primary) || !in_array($pMandator, $primary)) {
                    continue;
                }

                // force clause to be array
                if (empty($s['clause']) || !is_array($s['clause'])) {
                    $s['clause']    =   array();
                }

                // don't add mandator twice
                foreach ($s['clause'] as $c) {
                    if (!empty($c['field']) && $pMandator == $c['field']) {
                        continue 2;
                    }
                }

                // add mandator id
                $s['clause'][]  =   array(
                                        'field' =>  $pMandator,
                                        'value' =>  $this->mandator->getId()
                                    );

                // JOIN USING primary key?
                if (!empty($s['options']) && !empty($s['options']['join'])) {
                    foreach ($s['options']['join'] as &$j) {
                        if (empty($j['using'])) {
                            continue;
                        }
                        if (in_array($j['using'], $primary)) {
                            $j['using'] =   $primary;
                        }
                    }
                }
            }
        }

        // there is no table
        if (empty($this->config['table'])) {
            return;
        }
        $primary    =   $this->mandator->getIdentifier($this->config['table']);
        if (!is_array($primary) || !in_array($pMandator, $primary)) {
            return;
        }

        // add mandator filter
        $el =   array(
                        'type'          =>  'Constant',
                        'attributes'    =>  array(
                                                'default'   =>  $this->mandator->getId(),
                                                'value'     =>  $this->mandator->getId()
                                            )
                    );

        if ('filter' == $name) {
            $list['filter_' . $pMandator]  =   $el;
        }
        else {
            $list[$pMandator]   =   $el;
        }
    }
}