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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace filesystem;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SebastianBergmann\ObjectReflector\InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class Filesystem  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function exists(string $raw_filename)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename = sanitize_filename($raw_filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return file_exists($filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function read(string $raw_filename)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename = sanitize_filename($raw_filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return @file_get_contents($filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function delete(string $filename): bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename_clean = sanitize_filename($filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (is_dir($filename_clean)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $it = new \RecursiveDirectoryIterator($filename_clean, \RecursiveDirectoryIterator::SKIP_DOTS);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $files = new \RecursiveIteratorIterator($it,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        \RecursiveIteratorIterator::CHILD_FIRST);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach($files as $file) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($file->isDir()){ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    rmdir($file->getRealPath());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    unlink($file->getRealPath());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return rmdir($filename_clean);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return unlink($filename_clean);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function write(string $raw_filename, string $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename = sanitize_filename($raw_filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $pathinfo = pathinfo($filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!file_exists($pathinfo['dirname'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            mkdir($pathinfo['dirname'], 0777, true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return false !== file_put_contents($filename, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $raw_filename - full filename to be renamed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $new_name - new name of the file, relative to $filename path  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool|string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function rename(string $raw_filename, string $new_name)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename = sanitize_filename($raw_filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->exists($filename)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new \InvalidArgumentException("File $filename doesn't exists"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $pathinfo = pathinfo($filename);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $new_filename = sanitize_filename($pathinfo['dirname'] . '/' . $new_name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($this->exists($new_filename)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new \InvalidArgumentException("File $new_filename already exists"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (rename($filename, $new_filename)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $new_filename;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $path - full path name to scan  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array of full path names of found dirs  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function listDirs(string $path): array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!$this->exists($path)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new \InvalidArgumentException("$path not exists"); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return array_filter(glob($path . '*'), 'is_dir');  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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