<?php

declare(strict_types=1);

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

use UniRate\Client;

use UniRate\Exception\UniRateException;

$apiKey = getenv('UNIRATE_API_KEY');

if ($apiKey === false || $apiKey === '') {

fwrite(STDERR, "Set UNIRATE_API_KEY in your environment.\n");

exit(1);

}

$client = new Client(apiKey: $apiKey);

try {

// Current rate: USD -> EUR

$rate = $client->getRate(from: 'USD', to: 'EUR');

printf("1 USD = %.4f EUR\n", (float) $rate);

// Convert 100 USD to GBP

$converted = $client->convert(to: 'GBP', amount: 100, from: 'USD');

printf("100 USD = %.2f GBP\n", (float) $converted);

// List supported currencies

$currencies = $client->getSupportedCurrencies();

if (is_array($currencies)) {

printf("Supported currencies: %d\n", count($currencies));

printf("First 10: %s\n", implode(', ', array_slice($currencies, 0, 10)));

}

} catch (UniRateException $e) {

fwrite(STDERR, "UniRate error: " . $e->getMessage() . "\n");

exit(2);

}