app.php

<?php

declare(strict_types=1);

/**
 * Runnable Slim 4 example for the UniRate integration.
 *
 *   composer require unirate/slim slim/slim slim/psr7 nyholm/psr7 guzzlehttp/guzzle
 *   UNIRATE_API_KEY=your-key php -S localhost:8080 examples/app.php
 *
 * Then try:
 *   curl "http://localhost:8080/unirate/rate?from=USD&to=EUR"
 *   curl "http://localhost:8080/unirate/convert?from=USD&to=EUR&amount=100"
 *   curl "http://localhost:8080/unirate/currencies"
 *   curl "http://localhost:8080/unirate/vat?country=DE"
 */

require __DIR__ . '/../vendor/autoload.php';

use GuzzleHttp\Client as GuzzleClient;
use GuzzleHttp\Psr7\HttpFactory;
use Slim\Factory\AppFactory;
use UniRate\Slim\UniRateClient;
use UniRate\Slim\UniRateConfig;
use UniRate\Slim\UniRateMiddleware;

use function UniRate\Slim\registerUniRateRoutes;

$apiKey = getenv('UNIRATE_API_KEY') ?: '';

// Any PSR-18 client + PSR-17 factories work. Guzzle is used here as an example.
$guzzle = new GuzzleClient();
$factory = new HttpFactory();

$client = new UniRateClient(
    new UniRateConfig($apiKey),
    $guzzle,   // PSR-18 ClientInterface
    $factory,  // PSR-17 RequestFactoryInterface
    $factory,  // PSR-17 UriFactoryInterface
);

$app = AppFactory::create();

// Attach the client to every request so route handlers can resolve it.
$app->add(new UniRateMiddleware($client));

// Register GET /unirate/{rate,convert,currencies,vat}.
registerUniRateRoutes($app);

// You can also use the client directly in your own routes:
$app->get('/', function ($request, $response) use ($client) {
    $rate = $client->getRate('USD', 'EUR');
    $response->getBody()->write("1 USD = {$rate} EUR");

    return $response;
});

$app->run();