<?php

namespace Tools;

/**
 * Will manager new connections to the server
 * and try to match the requests and the controllers
**/
class Router
{
    /**
     * @var string $rootPath
     * Contains the application's root path (ex: http://myshop.com/) with trailing slash
     * Can be accessed read-only via $instance->rootPath
    **/
    private $rootPath;

    /**
     * @var string $rootPath
     * Contains the application's root path (ex: /srv/http/myshop/) with trailing slash
     * Can be accessed read-only via $instance->rootUrl
    **/
    private $rootUrl;

    /**
     * @var string $modulePath
     * Contains the module directory
    **/

    /**
     * Create the router, initialize url and path
    **/
    public function __construct()
    {
        $pos = strrpos($_SERVER["SCRIPT_NAME"], "/");
        $relativePath = (($pos === FALSE) ? "" : substr($_SERVER["SCRIPT_NAME"], 0, $pos));
        $this->rootPath = $_SERVER["DOCUMENT_ROOT"] . $relativePath . "/";
        $this->rootUrl = $_SERVER["REQUEST_SCHEME"] . "://" . $_SERVER["HTTP_HOST"] . $relativePath ."/";
    }

    /**
     * TODO@1 This function SHOULD be disabled by configuration
     * Called after database initialization
     * Check the site url and redirect user if the HOST does not match
    **/
    public function init()
    {
        $siteUrl = \Entity\Config::getConfig(null, "siteUrl");
        if ($siteUrl != $_SERVER["HTTP_HOST"])
        {
            header("location: http://{$siteUrl}{$_SERVER['REQUEST_URI']}");
            die;
        }
    }

    /**
     * @return \Controller\AController controller
     * /core/controller/AController.php
     * Match request to a controller
     * return FALSE on failure (eg. 404)
    **/
    public function serveUrl()
    {
        $this->prepareUrl();
        //TODO@2
    }

    /**
     * Append local routes to router
     * Will load CMS pages, categories page, products page, cart pages, etc.
    **/
    private function prepareUrl()
    {
        //TODO@2 add internal route config
    }

    /**
     * TODO@1 check end of tag to format url and paths
    **/
    public function __get($key)
    {
        switch ($key)
        {
        case "rootPath": return $this->rootPath; break;
        case "rootUrl": return $this->rootUrl; break;
        case "modulesPath": return $this->rootPath."content/modules/"; break;
        }
    }
}