<?php

namespace App\Helpers;

use Log;
use Normalizer;

class DirectoryHelper
{
	public $allowedImageExtensions = array('gif', 'jpeg', 'jpg', 'png', 'bmp', 'webp');

	public function getExtension($filename)
	{
		$a = explode('.', $filename);

		for ($i = count($a) - 1; $i >= 0; $i--)
		{
			if ($a[$i] !== "")
			{
				return strtolower($a[$i]);
			}
		}

		return null;
	}

	public function getUniqueDirectory($path, $hint, $fallback)
	{
		$name = null;
		if ($hint == "")
		{
			$name = $fallback;
		}
		else
		{
			$name = $hint;
		}

		$name = str_replace(" ", "_", $name);
		$name = Normalizer::normalize($name);

		//some characters, I think shouldn't be there
		$name = str_replace('*', '', $name);
		$name = str_replace('"', '', $name);
		$name = str_replace('/', '', $name);
		$name = str_replace('\\', '', $name);
		$name = str_replace('[', '', $name);
		$name = str_replace(']', '', $name);
		$name = str_replace(':', '', $name);
		$name = str_replace(';', '', $name);
		$name = str_replace('|', '', $name);
		$name = str_replace(',', '', $name);
		$name = str_replace('?', '', $name);
		$name = str_replace('+', '', $name);
		$name = str_replace('!', '', $name);

		$name = $this->normalizeChars($name);

		$filesystem = new \Illuminate\Filesystem\Filesystem();

		$i = -1;
		do {
			$i++;
		} while($filesystem->exists($path . $name . $i));

		return $name . $i;
	}

	public function getUniqueImageFileName($path, $extension, $hint, $fallback)
	{
		$name = null;
		if ($hint == "")
		{
			$name = $fallback;
		}
		else
		{
			$name = $hint;
		}

		$name = str_replace(" ", "_", $name);
		$name = Normalizer::normalize($name);

		//some characters, I think shouldn't be there
		$name = str_replace('*', '', $name);
		$name = str_replace('"', '', $name);
		$name = str_replace('/', '', $name);
		$name = str_replace('\\', '', $name);
		$name = str_replace('[', '', $name);
		$name = str_replace(']', '', $name);
		$name = str_replace(':', '', $name);
		$name = str_replace(';', '', $name);
		$name = str_replace('|', '', $name);
		$name = str_replace(',', '', $name);
		$name = str_replace('?', '', $name);
		$name = str_replace('+', '', $name);
		$name = str_replace('!', '', $name);

		$name = $this->normalizeChars($name);

		$filesystem = new \Illuminate\Filesystem\Filesystem();

		$i = -1;
		do {
			$i++;
		} while ($filesystem->exists($path . $name . $i . '.' . $extension));

		return $name . $i . '.' . $extension;
	}

	/**
	* This is important, because without this check uploading a gif with added php code
	* at the end can be run if the extension stays php
	*/
	public function isImageExtensionAllowed($extension) {
		foreach ($this->allowedImageExtensions as $a)
		{
			if ($a == $extension)
			{
				return true;
			}
		}

		return false;
	}

	public function sanitizeFolderName($folder)
	{
		$folder = str_replace(" ", "_", $folder);
		$folder = Normalizer::normalize($folder);

		//some characters, I think shouldn't be there
		$folder = str_replace('*', '', $folder);
		$folder = str_replace('"', '', $folder);
		$folder = str_replace('/', '', $folder);
		$folder = str_replace('\\', '', $folder);
		$folder = str_replace('[', '', $folder);
		$folder = str_replace(']', '', $folder);
		$folder = str_replace(':', '', $folder);
		$folder = str_replace(';', '', $folder);
		$folder = str_replace('|', '', $folder);
		$folder = str_replace(',', '', $folder);
		$folder = str_replace('?', '', $folder);
		$folder = str_replace('+', '', $folder);
		$folder = str_replace('!', '', $folder);

		$folder = $this->normalizeChars($folder);

		return $folder;
	}

	//this is from http://stackoverflow.com/questions/3371697/replacing-accented-characters-php
	public static function normalizeChars($s) {
	   	$replace = array(
	        'ъ'=>'-', 'Ь'=>'-', 'Ъ'=>'-', 'ь'=>'-',
	        'Ă'=>'A', 'Ą'=>'A', 'À'=>'A', 'Ã'=>'A', 'Á'=>'A', 'Æ'=>'A', 'Â'=>'A', 'Å'=>'A', 'Ä'=>'Ae',
	        'Þ'=>'B',
	        'Ć'=>'C', 'ץ'=>'C', 'Ç'=>'C',
	        'È'=>'E', 'Ę'=>'E', 'É'=>'E', 'Ë'=>'E', 'Ê'=>'E',
	        'Ğ'=>'G',
	        'İ'=>'I', 'Ï'=>'I', 'Î'=>'I', 'Í'=>'I', 'Ì'=>'I',
	        'Ł'=>'L',
	        'Ñ'=>'N', 'Ń'=>'N',
	        'Ø'=>'O', 'Ó'=>'O', 'Ò'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'Oe',
	        'Ş'=>'S', 'Ś'=>'S', 'Ș'=>'S', 'Š'=>'S',
	        'Ț'=>'T',
	        'Ù'=>'U', 'Û'=>'U', 'Ú'=>'U', 'Ü'=>'Ue',
	        'Ý'=>'Y',
	        'Ź'=>'Z', 'Ž'=>'Z', 'Ż'=>'Z',
	        'â'=>'a', 'ǎ'=>'a', 'ą'=>'a', 'á'=>'a', 'ă'=>'a', 'ã'=>'a', 'Ǎ'=>'a', 'а'=>'a', 'А'=>'a', 'å'=>'a', 'à'=>'a', 'א'=>'a', 'Ǻ'=>'a', 'Ā'=>'a', 'ǻ'=>'a', 'ā'=>'a', 'ä'=>'ae', 'æ'=>'ae', 'Ǽ'=>'ae', 'ǽ'=>'ae',
	        'б'=>'b', 'ב'=>'b', 'Б'=>'b', 'þ'=>'b',
	        'ĉ'=>'c', 'Ĉ'=>'c', 'Ċ'=>'c', 'ć'=>'c', 'ç'=>'c', 'ц'=>'c', 'צ'=>'c', 'ċ'=>'c', 'Ц'=>'c', 'Č'=>'c', 'č'=>'c', 'Ч'=>'ch', 'ч'=>'ch',
	        'ד'=>'d', 'ď'=>'d', 'Đ'=>'d', 'Ď'=>'d', 'đ'=>'d', 'д'=>'d', 'Д'=>'D', 'ð'=>'d',
	        'є'=>'e', 'ע'=>'e', 'е'=>'e', 'Е'=>'e', 'Ə'=>'e', 'ę'=>'e', 'ĕ'=>'e', 'ē'=>'e', 'Ē'=>'e', 'Ė'=>'e', 'ė'=>'e', 'ě'=>'e', 'Ě'=>'e', 'Є'=>'e', 'Ĕ'=>'e', 'ê'=>'e', 'ə'=>'e', 'è'=>'e', 'ë'=>'e', 'é'=>'e',
	        'ф'=>'f', 'ƒ'=>'f', 'Ф'=>'f',
	        'ġ'=>'g', 'Ģ'=>'g', 'Ġ'=>'g', 'Ĝ'=>'g', 'Г'=>'g', 'г'=>'g', 'ĝ'=>'g', 'ğ'=>'g', 'ג'=>'g', 'Ґ'=>'g', 'ґ'=>'g', 'ģ'=>'g',
	        'ח'=>'h', 'ħ'=>'h', 'Х'=>'h', 'Ħ'=>'h', 'Ĥ'=>'h', 'ĥ'=>'h', 'х'=>'h', 'ה'=>'h',
	        'î'=>'i', 'ï'=>'i', 'í'=>'i', 'ì'=>'i', 'į'=>'i', 'ĭ'=>'i', 'ı'=>'i', 'Ĭ'=>'i', 'И'=>'i', 'ĩ'=>'i', 'ǐ'=>'i', 'Ĩ'=>'i', 'Ǐ'=>'i', 'и'=>'i', 'Į'=>'i', 'י'=>'i', 'Ї'=>'i', 'Ī'=>'i', 'І'=>'i', 'ї'=>'i', 'і'=>'i', 'ī'=>'i', 'ĳ'=>'ij', 'Ĳ'=>'ij',
	        'й'=>'j', 'Й'=>'j', 'Ĵ'=>'j', 'ĵ'=>'j', 'я'=>'ja', 'Я'=>'ja', 'Э'=>'je', 'э'=>'je', 'ё'=>'jo', 'Ё'=>'jo', 'ю'=>'ju', 'Ю'=>'ju',
	        'ĸ'=>'k', 'כ'=>'k', 'Ķ'=>'k', 'К'=>'k', 'к'=>'k', 'ķ'=>'k', 'ך'=>'k',
	        'Ŀ'=>'l', 'ŀ'=>'l', 'Л'=>'l', 'ł'=>'l', 'ļ'=>'l', 'ĺ'=>'l', 'Ĺ'=>'l', 'Ļ'=>'l', 'л'=>'l', 'Ľ'=>'l', 'ľ'=>'l', 'ל'=>'l',
	        'מ'=>'m', 'М'=>'m', 'ם'=>'m', 'м'=>'m',
	        'ñ'=>'n', 'н'=>'n', 'Ņ'=>'n', 'ן'=>'n', 'ŋ'=>'n', 'נ'=>'n', 'Н'=>'n', 'ń'=>'n', 'Ŋ'=>'n', 'ņ'=>'n', 'ŉ'=>'n', 'Ň'=>'n', 'ň'=>'n',
	        'о'=>'o', 'О'=>'o', 'ő'=>'o', 'õ'=>'o', 'ô'=>'o', 'Ő'=>'o', 'ŏ'=>'o', 'Ŏ'=>'o', 'Ō'=>'o', 'ō'=>'o', 'ø'=>'o', 'ǿ'=>'o', 'ǒ'=>'o', 'ò'=>'o', 'Ǿ'=>'o', 'Ǒ'=>'o', 'ơ'=>'o', 'ó'=>'o', 'Ơ'=>'o', 'œ'=>'oe', 'Œ'=>'oe', 'ö'=>'oe',
	        'פ'=>'p', 'ף'=>'p', 'п'=>'p', 'П'=>'p',
	        'ק'=>'q',
	        'ŕ'=>'r', 'ř'=>'r', 'Ř'=>'r', 'ŗ'=>'r', 'Ŗ'=>'r', 'ר'=>'r', 'Ŕ'=>'r', 'Р'=>'r', 'р'=>'r',
	        'ș'=>'s', 'с'=>'s', 'Ŝ'=>'s', 'š'=>'s', 'ś'=>'s', 'ס'=>'s', 'ş'=>'s', 'С'=>'s', 'ŝ'=>'s', 'Щ'=>'sch', 'щ'=>'sch', 'ш'=>'sh', 'Ш'=>'sh', 'ß'=>'ss',
	        'т'=>'t', 'ט'=>'t', 'ŧ'=>'t', 'ת'=>'t', 'ť'=>'t', 'ţ'=>'t', 'Ţ'=>'t', 'Т'=>'t', 'ț'=>'t', 'Ŧ'=>'t', 'Ť'=>'t', '™'=>'tm',
	        'ū'=>'u', 'у'=>'u', 'Ũ'=>'u', 'ũ'=>'u', 'Ư'=>'u', 'ư'=>'u', 'Ū'=>'u', 'Ǔ'=>'u', 'ų'=>'u', 'Ų'=>'u', 'ŭ'=>'u', 'Ŭ'=>'u', 'Ů'=>'u', 'ů'=>'u', 'ű'=>'u', 'Ű'=>'u', 'Ǖ'=>'u', 'ǔ'=>'u', 'Ǜ'=>'u', 'ù'=>'u', 'ú'=>'u', 'û'=>'u', 'У'=>'u', 'ǚ'=>'u', 'ǜ'=>'u', 'Ǚ'=>'u', 'Ǘ'=>'u', 'ǖ'=>'u', 'ǘ'=>'u', 'ü'=>'ue',
	        'в'=>'v', 'ו'=>'v', 'В'=>'v',
	        'ש'=>'w', 'ŵ'=>'w', 'Ŵ'=>'w',
	        'ы'=>'y', 'ŷ'=>'y', 'ý'=>'y', 'ÿ'=>'y', 'Ÿ'=>'y', 'Ŷ'=>'y',
	        'Ы'=>'y', 'ž'=>'z', 'З'=>'z', 'з'=>'z', 'ź'=>'z', 'ז'=>'z', 'ż'=>'z', 'ſ'=>'z', 'Ж'=>'zh', 'ж'=>'zh'
	    );

    	return strtr($s, $replace);
	}
}