<?php
$url = $argv[1] ?? 'http://127.0.0.1:8080/start';

$ch = curl_init($url);
if ($ch === false) {
    fwrite(STDERR, "Could not initialize cURL.\n");
    exit(1);
}

$options = [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_MAXREDIRS => 5,
    CURLOPT_TIMEOUT => 10,
    CURLOPT_USERAGENT => 'ExampleRedirectClient/1.0',
];

if (defined('CURLOPT_REDIR_PROTOCOLS_STR')) {
    $options[CURLOPT_REDIR_PROTOCOLS_STR] = 'http,https';
} elseif (
    defined('CURLOPT_REDIR_PROTOCOLS')
    && defined('CURLPROTO_HTTP')
    && defined('CURLPROTO_HTTPS')
) {
    $options[CURLOPT_REDIR_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
}

curl_setopt_array($ch, $options);

$body = curl_exec($ch);
if ($body === false) {
    $errno = curl_errno($ch);
    $error = curl_error($ch);
    curl_close($ch);

    echo "cURL error {$errno}: {$error}" . PHP_EOL;
    exit(1);
}

$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$finalUrl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
$redirects = curl_getinfo($ch, CURLINFO_REDIRECT_COUNT);
curl_close($ch);

echo "HTTP status: {$status}" . PHP_EOL;
echo "Final URL: {$finalUrl}" . PHP_EOL;
echo "Redirects followed: {$redirects}" . PHP_EOL;
echo "Response body: " . trim($body) . PHP_EOL;

if ($status < 200 || $status >= 300) {
    exit(1);
}