<?php

/*
 * languageHandler.class.php
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 3/21/13
 */

class LanguageHandler
{
    /*
     * @property array options
     * Languages used in this website.
     * What files match with what languages
     */
    private $_options = [];

    /*
     * @property Language lang
     * Current language.
     */
    private $_lang = null;

    public function __construct()
    {
        // set options
        $this->_options = ['nl'=> DOCUMENT_ROOT.'config/lang/nl.php',
            'en'=> DOCUMENT_ROOT.'config/lang/en.php',
        ];
    }

    /*
     * Set language
     */
    public function set($lang)
    {
        $lang = strtolower($lang);
        if (array_key_exists($lang, $this->_options)) {
            $object = 'Language_'.ucfirst($lang);
            if (! class_exists($object)) {
                include DOCUMENT_ROOT.'/config/lang/'.$lang.'.php';
            }
            $this->_lang = new $object();
        }
    }

    /*
     * Get current Language
     * 1. Include Language Class
     * 2. Get the array
     * 3. Return to the user
     */
    public function get()
    {
        return $this->_lang->get();
    }

    /*
     * Get current Language
     * 1. Include Language Class
     * 2. Get the array
     * 3. Return urls to the user
     */
    public function getUrls()
    {
        return $this->_lang->get('url');
    }

    /*
     * Display the menu
     */
    public function displayMenu()
    {
        $output = '';
        foreach (array_keys($this->_options) as $country) {
            $stringUrl = substr($_SERVER['REQUEST_URI'], 1);
            $urls = explode('/', $stringUrl);

            $kms = substr(SITE_ROOT, -4, 3) == 'kms';

            //Do we need translation?
            if ($country != URL_LANG) {
                $i = 0;
                $url = '';
                //first search for all "keys" that compare with the url part
                $keys = [];
                foreach ($urls as $urlPart) {
                    if (! empty($urlPart)) {
                        if (($kms && $i > 1) || (! $kms && $i > 0 && $i != 2)) { // Laatste "of" is een extension keystud
                            // get the key that compares with the current url-part
                            $urlPart = $this->convert($urlPart);
                        }

                        $keys[] = $urlPart;
                        $i++;
                    }
                }
                // load the new count and get all translations
                $this->set($country);
                $convertedUrls = $this->_lang->get('url');

                $i = 0;
                foreach ($keys as $key) {
                    if ($i == 0 && $kms) {
                        $urlPart = 'kms';
                    } elseif (($kms && $i == 1) || (! $kms && $i == 0)) {
                        $urlPart = $country;
                    } else {
                        // use the key to translate the url-part to a new url-part
                        isset($convertedUrls[$key]) ? $urlPart = $convertedUrls[$key] : $urlPart = $key;
                    }

                    $url .= '/'.$urlPart;

                    $i++;
                }
                $url .= '/';
            } else {
                $url = '/'.$stringUrl;
            }

            $output .= ' <a href="'.$url.'" class="flag '.$country;
            if ($country == URL_LANG) {
                $output .= ' active';
            }
            $output .= '">';
            if (! $kms) {
                $output .= $country;
            }
            $output .= '</a>';
        }

        return $output;
    }

    /*
     * Convert URL_SUB to a method within a controller
     */
    public function convert($key)
    {
        $urls = $this->_lang->get('url');
        foreach ($urls as $converted => $url) {
            if (is_array($url)) {
                if (in_array($key, $url)) {
                    return $converted;
                }
            } elseif ($url == $key) {
                return $converted;
            }
        }

        return $key;
    }
}