<?php

namespace App\Utility;


use App\Entity\ExchangeRate;
use DateTime;

class Utility
{
    //... Declaration of Constants

    //... Declaration of curlExchangeRates function

    //... Declaration of processExchangeRates function

    //... getExchangeRateArray function

   public function getExchangeRates(DateTime $earliestDate = null): array
    {
        $curlResponse = $this->curlExchangeRates();
        if (!$curlResponse) return []; //if something went wrong with curlExchangeRates, return an empty array
        $rateString = $this->processExchangeRates($curlResponse, $earliestDate);
        return $this->getExchangeRateArray($rateString);
    }
}