<?php

declare(strict_types=1);

/**
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 * Copyright (C) 2019 Jan Böhmer (https://github.com/jbtronics)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

namespace App\Services;

use App\Entity\PriceInformations\Currency;
use Locale;
use NumberFormatter;

class MoneyFormatter
{
    protected $base_currency;
    protected $locale;

    public function __construct(string $base_currency)
    {
        $this->base_currency = $base_currency;
        $this->locale = Locale::getDefault();
    }

    /**
     * Format the the given value in the given currency.
     *
     * @param string|float  $value           the value that should be formatted
     * @param Currency|null $currency        The currency that should be used for formatting. If null the global one is used
     * @param int           $decimals        the number of decimals that should be shown
     * @param bool          $show_all_digits if set to true, all digits are shown, even if they are null
     *
     * @return string
     */
    public function format($value, ?Currency $currency = null, $decimals = 5, bool $show_all_digits = false)
    {
        $iso_code = $this->base_currency;
        if (null !== $currency && ! empty($currency->getIsoCode())) {
            $iso_code = $currency->getIsoCode();
        }

        $number_formatter = new NumberFormatter($this->locale, NumberFormatter::CURRENCY);
        if ($show_all_digits) {
            $number_formatter->setAttribute(\NumberFormatter::FRACTION_DIGITS, $decimals);
        } else {
            $number_formatter->setAttribute(\NumberFormatter::MAX_FRACTION_DIGITS, $decimals);
        }

        return $number_formatter->formatCurrency((float) $value, $iso_code);
    }
}