<?php
/**
 * functions.class.php
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 3/20/13
 */

class Fn
{
    public function __construct(){ }

    // Converts an string so it can be used in the url
    public static function encodeUrl($input)
    {
        // Remove whitespace
        $output = trim($input);

        // Lowercase
        $output = strtolower($output);

        // Replace &amp; with "en" or "and"
        switch(URL_LANG)
        {
            case 'en':
            $output = str_replace('&amp;', 'and', $output);
                break;
            case 'nl':
                $output = str_replace('&amp;', 'en', $output);
                break;
            case 'de':
                $output = str_replace('&amp;', 'und', $output);
                break;
            default:
                $output = str_replace('&amp;', 'and', $output);
        }

        // Replace special letters with normal letters
        $output = preg_replace( "`&([a-z])(acute|uml|circ|grave|ring|cedil|slash|tilde|caron|lig|quot|rsquo);`i","\\1", $output );

        // Remove html entities
        $pattern = '#(&)([a-z]*)([;$])#';
        $output = preg_replace($pattern,'',$output);

        // Remove all special characters
        $output = preg_replace('/[^a-zA-Z0-9_ %\[\]\.\(\)%&-]/s', '', $output);

        // Remove ( )
        $output = str_replace('(','',$output);
        $output = str_replace(')','',$output);
        $output = str_replace('.','',$output);


        // Replace spaces with a dash
        $output = str_replace(' ','-',$output);

        // Replace multiple dashes with one dash
        $output = preg_replace('/-{2,}/','-',$output);

        return $output;
    }

    /*
     * Headers a 404 error
     */
    public static function notFound()
    {
        header("HTTP/1.0 404 Not Found");
        header('location:' . LANG_ROOT . '404/');
        exit;
    }

    /*
     * Redirect to a page
     */
    public static function redirect($url)
    {
        header('location:' . $url);
        exit;
    }

    /*
     * Return a camelCase string
     */
    public static function camelCase($label)
    {
        $label = str_replace('-',' ',$label);
        $label = str_replace('_',' ',$label);
        $words = explode(' ',$label);

        $output = '';
        foreach($words as $i => $word)
        {
            $word = strtolower($word);
            if($i != 0) $word = ucfirst($word);
            $output .= $word;
        }
        return $output;
    }

    /*
     * Check if a string can be an e-mail address.
     */
    public static function checkMail($email) {
        // First, we check that there's one @ symbol, and that the lengths are right
        if (!preg_match("/^[^@]{1,64}@[^@]{1,255}$/", $email)) {
            // Email invalid because wrong number of characters in one section, or wrong number of @ symbols.
            return false;
        }
        // Split it into sections to make life easier
        $email_array = explode("@", $email);
        $local_array = explode(".", $email_array[0]);
        for ($i = 0; $i < sizeof($local_array); $i++) {
            if (!preg_match("/^(([A-Za-z0-9!#$%&'*+\/=?^_`{|}~-][A-Za-z0-9!#$%&'*+\/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$/", $local_array[$i])) {
                return false;
            }
        }
        if (!preg_match("/^\[?[0-9\.]+\]?$/", $email_array[1])) { // Check if domain is IP. If not, it should be valid domain name
            $domain_array = explode(".", $email_array[1]);
            if (sizeof($domain_array) < 2) {
                return false; // Not enough parts to domain
            }
            for ($i = 0; $i < sizeof($domain_array); $i++) {
                if (!preg_match("/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$/", $domain_array[$i])) {
                    return false;
                }
            }
        }
        return true;
    }

    /*
     * Print
     */
    public static function pre_print($array)
    {
        if($_SERVER['REMOTE_ADDR'] == '212.61.130.133')
        {
            echo '<pre>';
            print_r($array);
            echo '</pre>';
            exit;
        }
    }

    /*
     * Checks whether input is a 2-dimensional or 1-dimensional array
     * If 1-dimensional it gets converted to a 2-dimensional array
     */
    public static function convert2D($array)
    {
        if( ! is_array($array[key($array)])) $array = array($array);
        return $array;
    }
}