<?php

declare(strict_types=1);

if (PHP_SAPI !== 'cli') {
    http_response_code(404);
    exit;
}

$baseUrl = rtrim((string) ($argv[1] ?? ''), '/');
$address = strtolower(trim(
    (string) (getenv('CONTRACTLESS_TEST_ADDRESS') ?: ''),
));
$publicKey = strtolower(trim(
    (string) (getenv('CONTRACTLESS_TEST_PUBLIC_KEY') ?: ''),
));
$signature = strtolower(trim(
    (string) (getenv('CONTRACTLESS_TEST_SIGNATURE') ?: ''),
));
$route = (string) ($argv[2] ?? '/api/v1/height');

if (
    $baseUrl === ''
    || filter_var($baseUrl, FILTER_VALIDATE_URL) === false
    || !str_starts_with($baseUrl, 'https://')
) {
    fwrite(
        STDERR,
        "Usage: php tools/test_api.php https://api.example.com [/api/v1/route]\n",
    );
    exit(1);
}
if (!str_starts_with($route, '/api/v1')) {
    fwrite(STDERR, "The test route must begin with /api/v1.\n");
    exit(1);
}
if (preg_match('/^[a-f0-9]{40}\.(clc|cltc)$/', $address) !== 1) {
    fwrite(STDERR, "Set CONTRACTLESS_TEST_ADDRESS to a canonical wallet address.\n");
    exit(1);
}
if (
    preg_match('/^(?:[a-f0-9]{1794}|[a-f0-9]{1796})$/', $publicKey) !== 1
) {
    fwrite(
        STDERR,
        "Set CONTRACTLESS_TEST_PUBLIC_KEY to the wallet's Falcon public-key hex.\n",
    );
    exit(1);
}
if (preg_match('/^[a-f0-9]{1332}$/', $signature) !== 1) {
    fwrite(
        STDERR,
        "Set CONTRACTLESS_TEST_SIGNATURE to the Falcon handshake signature hex.\n",
    );
    exit(1);
}

try {
    $context = stream_context_create([
        'http' => [
            'method' => 'GET',
            'header' => implode("\r\n", [
                'Accept: application/json',
                'X-Contractless-Address: ' . $address,
                'X-Contractless-Public-Key: ' . $publicKey,
                'X-Contractless-Signature: ' . $signature,
            ]),
            'ignore_errors' => true,
            'timeout' => 20,
        ],
    ]);
    $body = file_get_contents($baseUrl . $route, false, $context);
    if ($body === false) {
        throw new RuntimeException('The API request could not be completed.');
    }

    $responseHeaders = $http_response_header ?? [];
    $statusLine = (string) ($responseHeaders[0] ?? '');
    if (preg_match('/\s(\d{3})\s/', $statusLine, $match) !== 1) {
        throw new RuntimeException('The API returned an invalid HTTP response.');
    }

    $status = (int) $match[1];
    echo "HTTP $status\n";
    try {
        $decoded = json_decode($body, true, flags: JSON_THROW_ON_ERROR);
        echo json_encode(
            $decoded,
            JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR,
        ) . PHP_EOL;
    } catch (JsonException) {
        echo $body . PHP_EOL;
    }

    exit($status >= 200 && $status < 300 ? 0 : 1);
} catch (Throwable $error) {
    fwrite(STDERR, 'API test failed: ' . $error->getMessage() . PHP_EOL);
    exit(1);
}