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<?php
namespace CommerceGuys\Intl\Currency;
use CommerceGuys\Intl\LocaleResolverTrait;
use CommerceGuys\Intl\Exception\UnknownCurrencyException;
/**
* Manages currencies based on JSON definitions.
*/
class CurrencyRepository implements CurrencyRepositoryInterface
{
use LocaleResolverTrait;
/**
* Base currency definitions.
*
* Contains data common to all locales, such as the currency numeric
* code, number of fraction digits.
*
* @var array
*/
protected $baseDefinitions = array();
/**
* Per-locale currency definitions.
*
* @var array
*/
protected $definitions = array();
/**
* Creates a CurrencyRepository instance.
*
* @param string $definitionPath The path to the currency definitions.
* Defaults to 'resources/currency'.
*/
public function __construct($definitionPath = null)
{
$this->definitionPath = $definitionPath ? $definitionPath : __DIR__ . '/../../resources/currency/';
}
/**
* {@inheritdoc}
*/
public function get($currencyCode, $locale = null, $fallbackLocale = null)
{
$locale = $this->resolveLocale($locale, $fallbackLocale);
$definitions = $this->loadDefinitions($locale);
if (!isset($definitions[$currencyCode])) {
throw new UnknownCurrencyException($currencyCode);
}
return $this->createCurrencyFromDefinition($definitions[$currencyCode], $locale);
}
/**
* {@inheritdoc}
*/
public function getAll($locale = null, $fallbackLocale = null)
{
$locale = $this->resolveLocale($locale, $fallbackLocale);
$definitions = $this->loadDefinitions($locale);
$currencies = array();
foreach ($definitions as $currencyCode => $definition) {
$currencies[$currencyCode] = $this->createCurrencyFromDefinition($definition, $locale);
}
return $currencies;
}
/**
* Loads the currency definitions for the provided locale.
*
* @param string $locale The desired locale.
*
* @return array
*/
protected function loadDefinitions($locale)
{
if (!isset($this->definitions[$locale])) {
$filename = $this->definitionPath . $locale . '.json';
$this->definitions[$locale] = json_decode(file_get_contents($filename), true);
// Make sure the base definitions have been loaded.
if (empty($this->baseDefinitions)) {
$this->baseDefinitions = json_decode(file_get_contents($this->definitionPath . 'base.json'), true);
}
// Merge-in base definitions.
foreach ($this->definitions[$locale] as $currencyCode => $definition) {
$this->definitions[$locale][$currencyCode] += $this->baseDefinitions[$currencyCode];
}
}
return $this->definitions[$locale];
}
/**
* Creates a currency object from the provided definition.
*
* @param array $definition The currency definition.
* @param string $locale The locale of the currency definition.
*
* @return Currency
*/
protected function createCurrencyFromDefinition(array $definition, $locale)
{
if (!isset($definition['fraction_digits'])) {
$definition['fraction_digits'] = 2;
}
$currency = new Currency();
$currency->setCurrencyCode($definition['code']);
$currency->setName($definition['name']);
$currency->setNumericCode($definition['numeric_code']);
$currency->setFractionDigits($definition['fraction_digits']);
$currency->setSymbol($definition['symbol']);
$currency->setLocale($locale);
return $currency;
}
}
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