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<?php |
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/*************************************************************************************/ |
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/* This file is part of the Thelia package. */ |
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/* */ |
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/* Copyright (c) OpenStudio */ |
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/* email : [email protected] */ |
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/* web : http://www.thelia.net */ |
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/* */ |
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/* For the full copyright and license information, please view the LICENSE.txt */ |
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/* file that was distributed with this source code. */ |
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/*************************************************************************************/ |
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namespace Thelia\CurrencyConverter; |
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use Thelia\CurrencyConverter\Exception\MissingProviderException; |
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use Thelia\CurrencyConverter\Provider\ProviderInterface; |
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use Thelia\Math\Number; |
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/** |
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* Class Currency |
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* @package Thelia\CurrencyConverter |
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* @author Manuel Raynaud <[email protected]> |
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*/ |
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class CurrencyConverter |
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{ |
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/** |
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* @var ProviderInterface |
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*/ |
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protected $provider; |
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/** |
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* @var string Currency ISO Code 4217 |
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*/ |
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protected $from; |
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/** |
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* @var string Currency ISO Code 4217 |
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*/ |
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protected $to; |
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/** |
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* @param ProviderInterface $provider optional parameter |
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*/ |
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public function __construct(ProviderInterface $provider = null) |
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{ |
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$this->provider = $provider; |
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} |
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/** |
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* @param ProviderInterface $provider |
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* @return self |
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*/ |
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public function setProvider(ProviderInterface $provider) |
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{ |
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$this->provider = $provider; |
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return $this; |
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} |
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/** |
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* The origin currency |
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* |
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* @param string $value ISO Code 4217 (example : USD, EUR). See http://fr.wikipedia.org/wiki/ISO_4217 |
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* @return self |
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*/ |
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public function from($value) |
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{ |
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$this->from = $value; |
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return $this; |
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} |
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/** |
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* |
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* the currency desired |
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* |
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* @param string $value ISO Code 4217 (example : USD, EUR). See http://fr.wikipedia.org/wiki/ISO_4217 |
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* @return self |
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*/ |
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public function to($value) |
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{ |
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$this->to = $value; |
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return $this; |
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} |
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/** |
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* |
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* convert a currency from one to another one |
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* |
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* eg : $converter->from('EUR')->to('USD')->convert(Number('1')); |
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* |
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* @param \Thelia\Math\Number $number |
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* @return \Thelia\Math\Number |
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*/ |
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public function convert(Number $number) |
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{ |
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$this->validate(); |
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$this->provider->from($this->from); |
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$this->provider->to($this->to); |
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$result = $this->provider->convert($number); |
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if (!($result instanceof \Thelia\Math\Number)) { |
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throw new \LogicException('your provider must return a Thelia\Math\Number instance'); |
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} |
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$this->reset(); |
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return $result; |
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} |
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/** |
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* Verify if the conversation can be done. |
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* |
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* @throws MissingProviderException thrown if the provider is missing |
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* @throws \RuntimeException thrown if to or from parameters are missing |
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*/ |
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private function validate() |
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{ |
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if (null === $this->provider) { |
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throw new MissingProviderException('A provider must be set for converting a currency'); |
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} |
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if (null === $this->from || null === $this->to) { |
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throw new \RuntimeException('from and to parameters must be provided'); |
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} |
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} |
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/** |
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* remove from and to configuration. |
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*/ |
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private function reset() |
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{ |
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$this->from = null; |
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$this->to = null; |
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} |
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} |
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