<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */
declare (strict_types=1);
namespace Packetery\Nette\Utils;

use Packetery\Nette;
/**
 * File system tool.
 */
final class FileSystem
{
    use \Packetery\Nette\StaticClass;
    /**
     * Creates a directory if it doesn't exist.
     * @throws \Packetery\Nette\IOException  on error occurred
     */
    public static function createDir(string $dir, int $mode = 0777) : void
    {
        if (!\is_dir($dir) && !@\mkdir($dir, $mode, \true) && !\is_dir($dir)) {
            // @ - dir may already exist
            throw new \Packetery\Nette\IOException("Unable to create directory '{$dir}' with mode " . \decoct($mode) . '. ' . Helpers::getLastError());
        }
    }
    /**
     * Copies a file or a directory. Overwrites existing files and directories by default.
     * @throws \Packetery\Nette\IOException  on error occurred
     * @throws \Packetery\Nette\InvalidStateException  if $overwrite is set to false and destination already exists
     */
    public static function copy(string $origin, string $target, bool $overwrite = \true) : void
    {
        if (\stream_is_local($origin) && !\file_exists($origin)) {
            throw new \Packetery\Nette\IOException("File or directory '{$origin}' not found.");
        } elseif (!$overwrite && \file_exists($target)) {
            throw new \Packetery\Nette\InvalidStateException("File or directory '{$target}' already exists.");
        } elseif (\is_dir($origin)) {
            static::createDir($target);
            foreach (new \FilesystemIterator($target) as $item) {
                static::delete($item->getPathname());
            }
            foreach ($iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($origin, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST) as $item) {
                if ($item->isDir()) {
                    static::createDir($target . '/' . $iterator->getSubPathName());
                } else {
                    static::copy($item->getPathname(), $target . '/' . $iterator->getSubPathName());
                }
            }
        } else {
            static::createDir(\dirname($target));
            if (($s = @\fopen($origin, 'rb')) && ($d = @\fopen($target, 'wb')) && @\stream_copy_to_stream($s, $d) === \false) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to copy file '{$origin}' to '{$target}'. " . Helpers::getLastError());
            }
        }
    }
    /**
     * Deletes a file or directory if exists.
     * @throws \Packetery\Nette\IOException  on error occurred
     */
    public static function delete(string $path) : void
    {
        if (\is_file($path) || \is_link($path)) {
            $func = \DIRECTORY_SEPARATOR === '\\' && \is_dir($path) ? 'rmdir' : 'unlink';
            if (!@$func($path)) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to delete '{$path}'. " . Helpers::getLastError());
            }
        } elseif (\is_dir($path)) {
            foreach (new \FilesystemIterator($path) as $item) {
                static::delete($item->getPathname());
            }
            if (!@\rmdir($path)) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to delete directory '{$path}'. " . Helpers::getLastError());
            }
        }
    }
    /**
     * Renames or moves a file or a directory. Overwrites existing files and directories by default.
     * @throws \Packetery\Nette\IOException  on error occurred
     * @throws \Packetery\Nette\InvalidStateException  if $overwrite is set to false and destination already exists
     */
    public static function rename(string $origin, string $target, bool $overwrite = \true) : void
    {
        if (!$overwrite && \file_exists($target)) {
            throw new \Packetery\Nette\InvalidStateException("File or directory '{$target}' already exists.");
        } elseif (!\file_exists($origin)) {
            throw new \Packetery\Nette\IOException("File or directory '{$origin}' not found.");
        } else {
            static::createDir(\dirname($target));
            if (\realpath($origin) !== \realpath($target)) {
                static::delete($target);
            }
            if (!@\rename($origin, $target)) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to rename file or directory '{$origin}' to '{$target}'. " . Helpers::getLastError());
            }
        }
    }
    /**
     * Reads the content of a file.
     * @throws \Packetery\Nette\IOException  on error occurred
     */
    public static function read(string $file) : string
    {
        $content = @\file_get_contents($file);
        // @ is escalated to exception
        if ($content === \false) {
            throw new \Packetery\Nette\IOException("Unable to read file '{$file}'. " . Helpers::getLastError());
        }
        return $content;
    }
    /**
     * Writes the string to a file.
     * @throws \Packetery\Nette\IOException  on error occurred
     */
    public static function write(string $file, string $content, ?int $mode = 0666) : void
    {
        static::createDir(\dirname($file));
        if (@\file_put_contents($file, $content) === \false) {
            // @ is escalated to exception
            throw new \Packetery\Nette\IOException("Unable to write file '{$file}'. " . Helpers::getLastError());
        }
        if ($mode !== null && !@\chmod($file, $mode)) {
            // @ is escalated to exception
            throw new \Packetery\Nette\IOException("Unable to chmod file '{$file}' to mode " . \decoct($mode) . '. ' . Helpers::getLastError());
        }
    }
    /**
     * Fixes permissions to a specific file or directory. Directories can be fixed recursively.
     * @throws \Packetery\Nette\IOException  on error occurred
     */
    public static function makeWritable(string $path, int $dirMode = 0777, int $fileMode = 0666) : void
    {
        if (\is_file($path)) {
            if (!@\chmod($path, $fileMode)) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to chmod file '{$path}' to mode " . \decoct($fileMode) . '. ' . Helpers::getLastError());
            }
        } elseif (\is_dir($path)) {
            foreach (new \FilesystemIterator($path) as $item) {
                static::makeWritable($item->getPathname(), $dirMode, $fileMode);
            }
            if (!@\chmod($path, $dirMode)) {
                // @ is escalated to exception
                throw new \Packetery\Nette\IOException("Unable to chmod directory '{$path}' to mode " . \decoct($dirMode) . '. ' . Helpers::getLastError());
            }
        } else {
            throw new \Packetery\Nette\IOException("File or directory '{$path}' not found.");
        }
    }
    /**
     * Determines if the path is absolute.
     */
    public static function isAbsolute(string $path) : bool
    {
        return (bool) \preg_match('#([a-z]:)?[/\\\\]|[a-z][a-z0-9+.-]*://#Ai', $path);
    }
    /**
     * Normalizes `..` and `.` and directory separators in path.
     */
    public static function normalizePath(string $path) : string
    {
        $parts = $path === '' ? [] : \preg_split('~[/\\\\]+~', $path);
        $res = [];
        foreach ($parts as $part) {
            if ($part === '..' && $res && \end($res) !== '..' && \end($res) !== '') {
                \array_pop($res);
            } elseif ($part !== '.') {
                $res[] = $part;
            }
        }
        return $res === [''] ? \DIRECTORY_SEPARATOR : \implode(\DIRECTORY_SEPARATOR, $res);
    }
    /**
     * Joins all segments of the path and normalizes the result.
     */
    public static function joinPaths(string ...$paths) : string
    {
        return self::normalizePath(\implode('/', $paths));
    }
}