<?php

namespace IO\Filesystem;

use IO\Exception\FileNotFoundException;
use IO\Exception\FileNotReadableException;
use SplFileInfo;

class File
{
    private SplFileInfo $info;

    private function __construct(string $filepath)
    {
        $this->guardUnusableFile($filepath);
        $filepath = realpath($filepath);
        $this->info = new SplFileInfo($filepath);
    }

    public static function fromString(string $filepath): self
    {
        return new self($filepath);
    }

    public function getInfo(): SplFileInfo
    {
        return $this->info;
    }

    public function __toString(): string
    {
        return (string)$this->getInfo();
    }

    private function guardUnusableFile(string $file): void
    {
        if (!file_exists($file)) {
            throw new FileNotFoundException($file);
        }
        if (!is_readable($file)) {
            throw new FileNotReadableException($file);
        }
    }
}