File data/currency.php

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<?php

namespace SIW\Data;

use SIW\External\Exchange_Rates;

/**
 * Bevat informatie over een valuta
 * 
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Currency {

    /**
     * ISO-code
     *
     * @var string
     */
    protected $iso_code;

    /**
     * Naam
     *
     * @var string
     */
    protected $name;

    /**
     * Valuta-teken
     *
     * @var string
     */
    protected $symbol;

    /**
     * @param array $data
     */
    public function __construct( array $currency ) {
        $defaults = [
            'iso'    => '',
            'name'   => '',
            'symbol' => '',
        ];
        $currency = wp_parse_args( $currency, $defaults );

        $this->iso_code = $currency['iso'];
        $this->name = $currency['name'];
        $this->symbol = $currency['symbol'];
    }

    /**
     * Geeft de ISO-code van de valuta terug
     *
     * @return string
     */
    public function get_iso_code() {
        return $this->iso_code;
    }

    /**
     * Geeft de naam van de valuta terug
     *
     * @return string
     */
    public function get_name() {
        return $this->name;
    }

    /**
     * Geeft het symbool van de valuta terug
     *
     * @return string
     */
    public function get_symbol() {
        return $this->symbol;
    }

    /**
     * Geeft wisselkoers van huidige valuta naar Euro terug
     *
     * @return float
     */
    public function get_exchange_rate() {
        $external_exchange_rates = new Exchange_Rates();
        $exchange_rates = $external_exchange_rates->get_rates();
        $exchange_rate = $exchange_rates[ $this->iso_code ] ?? false;
    
        return $exchange_rate;
    }

    /**
     * Rekent bedrag in huidige valuta om naar Euro
     *
     * @param float $amount
     * @param int $decimals
     * @return float
     */
    public function convert_to_euro( float $amount, int $decimals = 0 ) {
        $exchange_rate = $this->get_exchange_rate();
        if ( false == $exchange_rate ) {
            return false;
        }
    
        $amount_in_euro = (float) $amount * (float) $exchange_rate;
        $amount_in_euro = number_format_i18n( $amount_in_euro, $decimals );
        return $amount_in_euro;
    }
}

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