<?php

function createShortyyLink(string $url, string $expiresIn = '2h'): array {
    $apiKey = getenv('SHORTYY_API_KEY');
    $endpoint = 'https://api.shortyy.com/v1/links';

    $payload = json_encode([
        'url' => $url,
        'expires_in' => $expiresIn,
    ]);

    $ch = curl_init($endpoint);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Authorization: Bearer ' . $apiKey,
        'Content-Type: application/json',
        'Accept: application/json',
    ]);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);

    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpCode === 429) {
        throw new Exception("Shortyy token rate limit exceeded.");
    }

    if ($httpCode !== 201) {
        throw new Exception("Shortyy API request failed with code $httpCode: $response");
    }

    return json_decode($response, true)['link'];
}

// Example:
$link = createShortyyLink('https://php.net', '1d');
echo "Short URL: " . $link['short_url'] . PHP_EOL;