#!/usr/bin/env php
<?php

/**
 * Verify the running PHP environment meets the declared runtime requirements.
 *
 * Reads config/requirements.php and checks the PHP version and that every
 * required extension is loaded. Exits non-zero (failing CI) on any miss.
 *
 * Usage: php scripts/check_requirements.php
 */

$req = require __DIR__ . '/../config/requirements.php';

$errors = [];

// PHP version
$minPhp = $req['min_php_version'];
if (version_compare(PHP_VERSION, $minPhp, '<')) {
    $errors[] = sprintf('PHP %s is below the required minimum %s', PHP_VERSION, $minPhp);
}

// Required extensions
foreach ($req['required_extensions'] as $ext) {
    if (!extension_loaded($ext)) {
        $errors[] = sprintf('Missing required PHP extension: %s', $ext);
    }
}

if (!empty($errors)) {
    fwrite(STDERR, "Requirement check FAILED:\n");
    foreach ($errors as $err) {
        fwrite(STDERR, '  - ' . $err . "\n");
    }
    exit(1);
}

printf(
    "Requirement check passed: PHP %s (>= %s); extensions: %s\n",
    PHP_VERSION,
    $minPhp,
    implode(', ', $req['required_extensions'])
);
exit(0);