<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

class Tiki_Formula_Function_ResultCount extends Math_Formula_Function
{
    public function evaluate($element)
    {
        $allowed = ['filter'];

        if ($extra = $element->getExtraValues($allowed)) {
            $this->error(tr('Unexpected values: %0', implode(', ', $extra)));
        }

        $searchlib = TikiLib::lib('unifiedsearch');
        $query = new Search_Query();
        // These are absolute counts, so exclude jail and permission checks
        $searchlib->initQueryBase($query, false);
        $builder = new Search_Query_WikiBuilder($query);

        foreach ($element as $topLevel) {
            $arguments = $this->readMap($topLevel);
            $builder->addQueryArgument($topLevel->getType(), $arguments);
        }

        $query->setRange(0, 1);

        $result = $query->search($searchlib->getIndex());
        return count($result);
    }

    private function readMap($element)
    {
        $out = [];

        foreach ($element as $sub) {
            $out[$sub->getType()] = $this->evaluateChild($sub[0]);
        }

        return $out;
    }
}