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<?php

declare(strict_types=1);

namespace Codeception\Util;

use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;

use function basename;
use function rmdir;
use function unlink;

/**
 * Set of functions to work with Filesystem
 */
class FileSystem
{
    public static function doEmptyDir(string $path): void
    {
        $iterator = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($path),
            RecursiveIteratorIterator::CHILD_FIRST
        );

        foreach ($iterator as $path) {
            $basename = basename((string)$path);
            if ($basename === '.' || $basename === '..' || $basename === '.gitignore' || $basename === '.gitkeep') {
                continue;
            }

            if ($path->isDir()) {
                rmdir((string)$path);
            } else {
                unlink((string)$path);
            }
        }
    }

    public static function deleteDir(string $dir): bool
    {
        if (!file_exists($dir)) {
            return true;
        }

        if (!is_dir($dir) || is_link($dir)) {
            return @unlink($dir);
        }

        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
            $dir = str_replace('/', '\\', $dir);
            exec('rd /s /q "' . $dir . '"');
            return true;
        }

        foreach (scandir($dir) as $item) {
            if ($item === '.' || $item === '..') {
                continue;
            }

            if (!self::deleteDir($dir . DIRECTORY_SEPARATOR . $item)) {
                chmod($dir . DIRECTORY_SEPARATOR . $item, 0777);
                if (!self::deleteDir($dir . DIRECTORY_SEPARATOR . $item)) {
                    return false;
                }
            }
        }

        return @rmdir($dir);
    }

    public static function copyDir(string $src, string $dst): void
    {
        $dir = opendir($src);
        @mkdir($dst);
        while (false !== ($file = readdir($dir))) {
            if (($file != '.') && ($file != '..')) {
                if (is_dir($src . DIRECTORY_SEPARATOR . $file)) {
                    self::copyDir($src . DIRECTORY_SEPARATOR . $file, $dst . DIRECTORY_SEPARATOR . $file);
                } else {
                    copy($src . DIRECTORY_SEPARATOR . $file, $dst . DIRECTORY_SEPARATOR . $file);
                }
            }
        }
        closedir($dir);
    }
}