<?php
$baseUrl = rtrim(getenv('PUBLIC_API_BASE_URL') ?: 'https://api.compudime.com', '/');
$apiKey = getenv('PUBLIC_API_KEY');
if (!$apiKey) {
    throw new RuntimeException('Set PUBLIC_API_KEY to <PUBLIC_API_KEY> before running this example.');
}

function public_api_get(string $baseUrl, string $path, string $apiKey, string $requestId): array {
    $curl = curl_init($baseUrl . $path);
    curl_setopt_array($curl, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HTTPHEADER => [
            'Authorization: Bearer ' . $apiKey,
            'X-Request-Id: ' . $requestId,
        ],
    ]);

    $body = curl_exec($curl);
    $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
    if ($body === false) {
        throw new RuntimeException(curl_error($curl));
    }
    curl_close($curl);

    $decoded = json_decode($body, true, flags: JSON_THROW_ON_ERROR);
    if ($status < 200 || $status >= 300) {
        throw new RuntimeException('Public API problem JSON ' . $decoded['code'] . ' (' . $decoded['requestId'] . '): ' . $decoded['detail']);
    }
    return $decoded;
}

$fields = rawurlencode('productCode,description,price');
$page = public_api_get($baseUrl, "/v1/products?fields={$fields}&limit=50", $apiKey, 'php-products-page-1');
foreach ($page['products'] as $product) {
    echo $product['productCode'] . ' ' . $product['description'] . ' ' . $product['price'] . PHP_EOL;
}

if (!empty($page['nextCursor'])) {
    $cursor = rawurlencode($page['nextCursor']);
    $next = public_api_get($baseUrl, "/v1/products?fields={$fields}&limit=50&cursor={$cursor}", $apiKey, 'php-products-page-2');
    echo 'Fetched ' . count($next['products']) . ' products from the nextCursor page.' . PHP_EOL;
}