<?php

namespace common\models;

class HuBankAccountValidator
{

    public  function validate($bankAccount){
        if ( !isset($bankAccount)){
            return false;
        }
        $stripedBankAccount = preg_replace('/\s+/', '', $bankAccount);
        if ( strlen($stripedBankAccount) != 24){
            return false;
        }
        $arrayOfNumbers = str_split($stripedBankAccount);
        $multipliers = [9,7,3,1];
        $groups = [0,0,0];
        for ( $i = 0; $i < count($arrayOfNumbers); $i++ ) {
            $number = $arrayOfNumbers[$i];
            $multiplier = $multipliers[$i % 4];
            $total = $multiplier * $number;
            $groups[intval($i / 8)] +=  $total ;
        }

        foreach ($groups as $group){
            $mod = $group % 10;
            if ( $mod > 0 ){
                return false;
            }
        }

        return true;
    }

}