<?php


$required_extentions = array("openssl", "gd", "mysql", "PDO", "mbstring", "tokenizer", "bcmath", "xml", "curl", "zip", "fpm");

$requirements = [
    "php" => "7.4",
    "mysql" => "5.7.22",


];

function checkPhpVersion()
{
    global $requirements;
    if (version_compare(phpversion(), $requirements["php"], '>=')) {
        return "OK";
    }
    return "not OK";
}

function getMySQLVersion()
{
    global $requirements;

    $output = shell_exec('mysql -V');
    preg_match('@[0-9]+\.[0-9]+\.[0-9]+@', $output, $version);

    $versionoutput = $version[0] ?? "0";

    return (intval($versionoutput) > intval($requirements["mysql"]) ? "OK" : $versionoutput);
}

function getZipVersion()
{
    global $requirements;

    $output = shell_exec('zip  -v');
    preg_match('@[0-9]+\.[0-9]+\.[0-9]+@', $output, $version);

    $versionoutput = $version[0] ?? 0;

    return ($versionoutput != 0 ? "OK" : "not OK");
}

function getGitVersion()
{
    global $requirements;

    $output = shell_exec('git  --version');
    preg_match('@[0-9]+\.[0-9]+\.[0-9]+@', $output, $version);

    $versionoutput = $version[0] ?? 0;

    return ($versionoutput != 0 ? "OK" : "not OK");
}

function getTarVersion()
{
    global $requirements;

    $output = shell_exec('tar  --version');
    preg_match('@[0-9]+\.[0-9]+@', $output, $version);

    $versionoutput = $version[0] ?? 0;

    return ($versionoutput != 0 ? "OK" : "not OK");
}

function checkExtensions()
{
    global $required_extentions;

    $not_ok = [];
    $extentions = get_loaded_extensions();

    foreach ($required_extentions as $ext) {
        if (!in_array($ext, $extentions)) {
            array_push($not_ok, $ext);
        }
    }
    return $not_ok;

}

function setEnvironmentValue($envKey, $envValue)
{

    $envFile = dirname(__FILE__, 3) . "/.env";
    $str = file_get_contents($envFile);

    $str .= "\n"; // In case the searched variable is in the last line without \n
    $keyPosition = strpos($str, "{$envKey}=");
    $endOfLinePosition = strpos($str, PHP_EOL, $keyPosition);
    $oldLine = substr($str, $keyPosition, $endOfLinePosition - $keyPosition);
    $str = str_replace($oldLine, "{$envKey}={$envValue}", $str);
    $str = substr($str, 0, -1);

    $fp = fopen($envFile, 'w');
    fwrite($fp, $str);
    fclose($fp);
}


?>