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Tātad Tev vajadzēs kaut ko tādu iekš HTDOCS mapes uztaisīt zem hosta mapi ar nosaukumu: Service tālāk taisam iekš mapes: Factory.php / Registry.php

Factory.php

<?php

declare(strict_types=1);

/*
 * This file is part of Swap.
 *
 * (c) Florian Voutzinos <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Swap\Service;

use Exchanger\Service\HttpService;
use Http\Client\HttpClient;
use Http\Discovery\HttpClientDiscovery;
use Http\Discovery\Psr17FactoryDiscovery;
use Psr\Http\Client\ClientInterface;
use Http\Message\RequestFactory;
use Psr\Http\Message\RequestFactoryInterface;

/**
 * Helps building services.
 *
 * @author Florian Voutzinos <[email protected]>
 */
final class Factory
{
    /**
     * The client.
     *
     * @var HttpClient
     */
    private $httpClient;

    /**
     * The request factory.
     *
     * @var RequestFactory
     */
    private $requestFactory;

    /**
     * The service registry.
     *
     * @var Registry
     */
    private $registry;

    /**
     * @param HttpClient|ClientInterface|null $httpClient
     * @param RequestFactoryInterface|null    $requestFactory
     */
    public function __construct($httpClient = null, RequestFactoryInterface $requestFactory = null)
    {
        if (null === $httpClient) {
            $httpClient = HttpClientDiscovery::find();
        } else {
            if (!$httpClient instanceof ClientInterface && !$httpClient instanceof HttpClient) {
                throw new \LogicException('Client must be an instance of Http\\Client\\HttpClient or Psr\\Http\\Client\\ClientInterface');
            }
        }

        $this->httpClient = $httpClient;
        $this->requestFactory = $requestFactory ?: Psr17FactoryDiscovery::findRequestFactory();
        $this->registry = new Registry();
    }

    /**
     * Sets the http client.
     *
     * @param HttpClient|ClientInterface $httpClient
     */
    public function setHttpClient($httpClient): void
    {
        if (!$httpClient instanceof ClientInterface && !$httpClient instanceof HttpClient) {
            throw new \LogicException('Client must be an instance of Http\\Client\\HttpClient or Psr\\Http\\Client\\ClientInterface');
        }

        $this->httpClient = $httpClient;
    }

    /**
     * Sets the request factory.
     *
     * @param RequestFactoryInterface $requestFactory
     */
    public function setRequestFactory(RequestFactoryInterface $requestFactory): void
    {
        $this->requestFactory = $requestFactory;
    }

    /**
     * Creates a new service.
     *
     * @param string $serviceName
     * @param array  $args
     *
     * @return \Exchanger\Contract\ExchangeRateService
     */
    public function create(string $serviceName, array $args = [])
    {
        if (!$this->registry->has($serviceName)) {
            throw new \LogicException(sprintf('The service "%s" is not registered.', $serviceName));
        }

        $classOrCallable = $this->registry->get($serviceName);

        if (is_callable($classOrCallable)) {
            return call_user_func($classOrCallable);
        }

        if (is_subclass_of($classOrCallable, HttpService::class)) {
            return new $classOrCallable($this->httpClient, $this->requestFactory, $args);
        }

        $r = new \ReflectionClass($classOrCallable);

        return $r->newInstanceArgs($args);
    }
}
?>

Registry.php

<?php

declare(strict_types=1);

/*
 * This file is part of Swap.
 *
 * (c) Florian Voutzinos <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Swap\Service;

use Exchanger\Service\Registry as ExchangerRegistry;

/**
 * Holds services.
 *
 * @author Florian Voutzinos <[email protected]>
 */
final class Registry
{
    /**
     * The registered services.
     *
     * @var array
     */
    private static $services = [];

    /**
     * Constructor.
     */
    public function __construct()
    {
        $this->registerServices();
    }

    /**
     * Tells of the registry has the given service.
     *
     * @param string $name The service name
     *
     * @return bool
     */
    public function has(string $name): bool
    {
        return isset(self::$services[$name]);
    }

    /**
     * Gets a service.
     *
     * @param string $name The service name
     *
     * @return string|null
     */
    public function get(string $name)
    {
        return isset(self::$services[$name]) ? self::$services[$name] : null;
    }

    /**
     * Registers a new service.
     *
     * @param string          $name            The service name
     * @param string|callable $classOrCallable The class name or a callable
     *
     * @throws \InvalidArgumentException
     */
    public static function register(string $name, $classOrCallable): void
    {
        self::$services[$name] = $classOrCallable;
    }

    /**
     * Registers the core services.
     */
    private function registerServices(): void
    {
        $services = ExchangerRegistry::getServices();

        foreach ($services as $name => $class) {
            self::register($name, $class);
        }
    }
}
?>

Tagad laižam tālāk!

Tagad mums atkal vajadzēs divus failus: Builder.php / Swap.php ->

Builder.php

<?php

declare(strict_types=1);

/*
 * This file is part of Swap.
 *
 * (c) Florian Voutzinos <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Swap;

use Exchanger\Contract\ExchangeRateService;
use Exchanger\Exchanger;
use Exchanger\Service\Chain;
use Http\Client\HttpClient;
use Psr\SimpleCache\CacheInterface;
use Swap\Service\Factory;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;

/**
 * Helps building Swap.
 *
 * @author Florian Voutzinos <[email protected]>
 */
final class Builder
{
    /**
     * The services.
     *
     * @var array
     */
    private $services = [];

    /**
     * The options.
     *
     * @var array
     */
    private $options = [];

    /**
     * The http client.
     *
     * @var HttpClient
     */
    private $httpClient;

    /**
     * The request factory.
     *
     * @var RequestFactoryInterface
     */
    private $requestFactory;

    /**
     * The cache.
     *
     * @var CacheInterface
     */
    private $cache;

    /**
     * Constructor.
     *
     * @param array $options
     */
    public function __construct(array $options = [])
    {
        $this->options = $options;
    }

    /**
     * Adds a service by service name.
     *
     * @param string $serviceName
     * @param array  $options
     *
     * @return Builder
     */
    public function add(string $serviceName, array $options = []): self
    {
        $this->services[$serviceName] = $options;

        return $this;
    }

    /**
     * Add a service by service instance.
     *
     * @param ExchangeRateService $exchangeRateService
     *
     * @return Builder
     */
    public function addExchangeRateService(ExchangeRateService $exchangeRateService): self
    {
        $this->services[spl_object_hash($exchangeRateService)] = $exchangeRateService;

        return $this;
    }

    /**
     * Uses the given http client.
     *
     * @param HttpClient|ClientInterface $httpClient
     *
     * @return Builder
     */
    public function useHttpClient($httpClient): self
    {
        if (!$httpClient instanceof ClientInterface && !$httpClient instanceof HttpClient) {
            throw new \LogicException('Client must be an instance of Http\\Client\\HttpClient or Psr\\Http\\Client\\ClientInterface');
        }

        $this->httpClient = $httpClient;

        return $this;
    }

    /**
     * Uses the given request factory.
     *
     * @param RequestFactoryInterface $requestFactory
     *
     * @return Builder
     */
    public function useRequestFactory(RequestFactoryInterface $requestFactory): self
    {
        $this->requestFactory = $requestFactory;

        return $this;
    }

    /**
     * Uses the given simple cache.
     *
     * @param CacheInterface $cache
     *
     * @return Builder
     */
    public function useSimpleCache(CacheInterface $cache): self
    {
        $this->cache = $cache;

        return $this;
    }

    /**
     * Builds Swap.
     *
     * @return Swap
     */
    public function build(): Swap
    {
        $serviceFactory = new Factory($this->httpClient, $this->requestFactory);

        /** @var ExchangeRateService[] $services */
        $services = [];

        foreach ($this->services as $name => $optionsOrService) {
            /** @var array|ExchangeRateService $optionsOrService */
            if ($optionsOrService instanceof ExchangeRateService) {
                $services[] = $optionsOrService;
            } else {
                $services[] = $serviceFactory->create($name, $optionsOrService);
            }
        }

        $service = new Chain($services);
        $exchanger = new Exchanger($service, $this->cache, $this->options);

        return new Swap($exchanger);
    }
}
?>

Swap.php

<?php

declare(strict_types=1);

/*
 * This file is part of Swap.
 *
 * (c) Florian Voutzinos <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Swap;

use Exchanger\Contract\ExchangeRateProvider;
use Exchanger\ExchangeRateQueryBuilder;
use Exchanger\Contract\ExchangeRate as ExchangeRateContract;

/**
 * Swap is an easy to use facade to retrieve exchange rates from various services.
 *
 * @author Florian Voutzinos <[email protected]>
 */
class Swap
{
    /**
     * The exchange rate provider.
     *
     * @var ExchangeRateProvider
     */
    private $exchangeRateProvider;

    /**
     * Creates a new Swap.
     *
     * @param ExchangeRateProvider $exchangeRateProvider
     */
    public function __construct(ExchangeRateProvider $exchangeRateProvider)
    {
        $this->exchangeRateProvider = $exchangeRateProvider;
    }

    /**
     * Quotes a currency pair.
     *
     * @param string $currencyPair The currency pair like "EUR/USD"
     * @param array  $options      An array of query options
     *
     * @return ExchangeRateContract
     */
    public function latest(string $currencyPair, array $options = []): ExchangeRateContract
    {
        return $this->quote($currencyPair, null, $options);
    }

    /**
     * Quotes a currency pair.
     *
     * @param string             $currencyPair The currency pair like "EUR/USD"
     * @param \DateTimeInterface $date         An optional date for historical rates
     * @param array              $options      An array of query options
     *
     * @return ExchangeRateContract
     */
    public function historical(string $currencyPair, \DateTimeInterface $date, array $options = []): ExchangeRateContract
    {
        return $this->quote($currencyPair, $date, $options);
    }

    /**
     * Quotes a currency pair.
     *
     * @param string             $currencyPair The currency pair like "EUR/USD"
     * @param \DateTimeInterface $date         An optional date for historical rates
     * @param array              $options      An array of query options
     *
     * @return ExchangeRateContract
     */
    private function quote(string $currencyPair, \DateTimeInterface $date = null, array $options = []): ExchangeRateContract
    {
        $exchangeQueryBuilder = new ExchangeRateQueryBuilder($currencyPair);

        if (null !== $date) {
            $exchangeQueryBuilder->setDate($date);
        }

        foreach ($options as $name => $value) {
            $exchangeQueryBuilder->addOption($name, $value);
        }

        $query = $exchangeQueryBuilder->build();

        return $this->exchangeRateProvider->getExchangeRate($query);
    }
}
?>

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