<?php

namespace WhizSid\ArrayBase\Query\Objects;

use WhizSid\ArrayBase\AB\DataSet;
use WhizSid\ArrayBase\Functions\Agregate;
use WhizSid\ArrayBase\Helper;

class GroupedDataSet
{
    /**
     * Hashed variable of all values in order clause.
     *
     * @var string
     */
    protected $hash;
    /**
     * Data set that in one group.
     *
     * @var DataSet
     */
    protected $dataSet;

    /**
     * Storing a dataset.
     *
     * @param DataSet $set
     */
    public function setDataSet($set)
    {
        $this->dataSet = $set;
    }

    /**
     * Returning the data set.
     *
     * @return DataSet
     */
    public function getDataSet()
    {
        return $this->dataSet;
    }

    /**
     * Setting the has.
     *
     * @param string $hash
     */
    public function setHash($hash)
    {
        $this->hash = $hash;
    }

    /**
     * Matching the hash.
     *
     * @param string $matchMe
     *
     * @return bool
     */
    public function match($matchMe)
    {
        return $this->hash == $matchMe;
    }

    /**
     * Returning a value from grouped set.
     *
     * @param mixed $var
     *
     * @return mixed
     */
    public function getValue($var)
    {
        if (Helper::isColumn($var)) {
            return $this->dataSet->getCell($var, 0)->getValue();
        } elseif (Helper::isAgregate($var)) {
            /* @var Agregate $var */

            return $var->setGroupedSet($this)->execute();
        } elseif (Helper::isFunction($var)) {
            return $var->setDataSet($this->dataSet)->execute(0);
        } else {
            return $var;
        }
    }
}