<?php
/**
 * BNR (National Bank of Romania) official rates
 * 
 * Author: punctweb.com <mailto:hide@address.com>
 * Version: 0.1
 * Started: 12 Sep 2008 22:57
 * 
 * Released under the terms of Creative Commons Attribution-Share Alike 3.0 licence
 * http://creativecommons.org/licenses/by-sa/3.0/
 */

class Bnr {
    private $data;
    
    /**
     * The original source
     */
    const BNR_FEED = 'http://www.bnro.ro/nbrfxrates.xml';
    
    /**
     * Translate these values in your own language
     */
    private $names = array('AUD' => 'Dolarul australian',
                           'BGN' => 'Leva bulgareasca',
                           'CAD' => 'Dolarul canadian',
                           'CHF' => 'Francul elvetian',
                           'CZK' => 'Coroana ceha',
                           'DKK' => 'Coroana daneza',
                           'EGP' => 'Lira egipteana',
                           'EUR' => 'Euro',
                           'GBP' => 'Lira sterlina',
                           '100 HUF' => '100 Forinti maghiari',
                           '100 JPY' => '100 Yeni japonezi',
                           'MDL' => 'Leul moldovenesc',
                           'NOK' => 'Coroana norvegiana',
                           'PLN' => 'Zlotul polonez',
                           'RUB' => 'Rubla rusesca',
                           'SEK' => 'Coroana suedeza',
                           'SKK' => 'Coroana slovaca',
                           'TRY' => 'Lira turceasca',
                           'USD' => 'Dolar SUA',
                           'XDR' => 'Drept sp. de tragere',
                           'XAU' => 'Gramul de aur');
    
    public function __construct() {
        $this->data = $this->parseFeed();
    }
    
    /**
     * Parse and load the XML feed
     * @return object
     */
    private function parseFeed() {
       $xml = simplexml_load_file(self::BNR_FEED);
       
       return $xml->Body->Cube->Rate;
    }
    
    /**
     * Get the currencies: symbols and values (multipliers, also, if it is the case)
     * @return array
     */
    public function getCurrencies() {
        $result = array();
        
        for($i = 0; $i < count($this->data); $i++) {
            if((string) $this->data[$i]->attributes()->multiplier != '') {
                $result[(string) $this->data[$i]->attributes()->multiplier.' '.(string) $this->data[$i]->attributes()->currency] = (string) $this->data[$i];
            } else {
                $result[(string) $this->data[$i]->attributes()->currency] = (string) $this->data[$i];
            }
        }
        
        return $result;
    }
    
    /**
     * Get the value of a single currency
     * @return string
     * @param $symbol string
     */
    public function getCurrencyValue($symbol) {
        $currencies = $this->getCurrencies();
        
        return $currencies[$symbol];
    }
    
    /**
     * Get the full name of a currency
     * @return string | array
     * @param $symbol string[optional]
     */
    public function getCurrencyName($symbol = '') {
        return $symbol != '' ? $this->names[$symbol] : $this->names;
    }
}