<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
 * system controller.
 *
 * @package pnp4nagios 
 * @author  Joerg Linge
 * @license GPL
 */
class System_Controller extends Template_Controller {

    public function __construct()
    {
        parent::__construct();
        
        $this->data       = new Data_Model();
        $this->config     = new Config_Model();
        $this->rrdtool    = new Rrdtool_Model();
        $this->auth       = new Auth_Model();
		#$this->system	  = new System_Model();

        $this->config->read_config();
        Kohana::config_set('locale.language',$this->config->conf['lang']);
        // Check for mod_rewrite
        $this->check_mod_rewrite();


        $this->start             = $this->input->get('start',FALSE);
        $this->end               = $this->input->get('end',FALSE);
        $this->theme             = $this->input->get('theme',FALSE);
        $this->view              = "";
        $this->host              = urldecode($this->input->get('host',NULL));
        $this->service           = urldecode($this->input->get('srv',NULL));
        $this->controller        = Router::$controller;

        if(isset($_GET['view']) && $_GET['view'] != "" )
            $this->view = pnp::clean($_GET['view']);

        $this->data->getTimeRange($this->start,$this->end,$this->view);
        if(Router::$controller != "image" && Router::$controller != "image_special"){
            $this->session = Session::instance();

            # Session withou theme info
            if($this->session->get("theme","new") == "new"){
                if($this->theme){
                    # store $this->theme if available
					Kohana::config_set('core.theme',$this->theme);
                    $this->session->set('theme', $this->theme );
                }else{
                    # set $this->theme to default value 
                    $this->theme = $this->config->conf['ui-theme'];
					Kohana::config_set('core.theme',$this->theme);
                }
            # Sesion with theme info    
            }else{
                if($this->theme && $this->theme != 'default'){
                    # store $this->theme if available
                    $this->session->set('theme', $this->theme );
					Kohana::config_set('core.theme',$this->theme);
                }elseif($this->theme == 'default'){
                    # reset to default theme 
                    $this->theme = $this->config->conf['ui-theme'];
                    $this->session->set('theme', $this->theme );
					Kohana::config_set('core.theme',$this->theme);
                }else{
                    # set $this->theme with session infos
                    $this->theme = $this->session->get('theme');
					Kohana::config_set('core.theme',$this->theme);
                }
            }

            if($this->start && $this->end ){
                if($this->session->get('timerange-reset',0) == 0){
                    $this->session->set("start", $this->start);
                    $this->session->set("end", $this->end);
                }else{
                    $this->session->set('timerange-reset', 0);
                }
            }
            if($this->start && !$this->end){
                if($this->session->get('timerange-reset',0) == 0){
                    $this->session->set("start", $this->start);
                    $this->session->set("end", "");
                }else{
                    $this->session->set('timerange-reset', 0);
                }
            }
            if($this->end && !$this->start){
                if($this->session->get('timerange-reset',0) == 0){
                    $this->session->set("end", $this->end);
                    $this->session->set("start", "");
                }else{
                    $this->session->set('timerange-reset', 0);
                }
            }
        }
        $this->template = $this->add_view('template');
    }

    public function __call($method, $arguments)
    {
        // Disable auto-rendering
        $this->auto_render = FALSE;

        // By defining a __call method, all pages routed to this controller
        // that result in 404 errors will be handled by this method, instead of
        // being displayed as "Page Not Found" errors.
        echo $this->_("The requested page doesn't exist") . " ($method)";
    }

    /**
     * Handle paths to current theme etc
     *
     */
    public function add_view($view=false)
    {
        $view = trim($view);
        if (empty($view)) {
            return false;
        }
        if (!file_exists(APPPATH."/views/".$view.".php")) {
            return false;
        }
        #return new View($this->theme_path.$view);
        return new View($view);
    }

    public function check_mod_rewrite(){
        if(!function_exists('apache_get_modules')){
            // Add index.php to every URL while not running withn apache mod_php 
            Kohana::config_set('core.index_page','index.php');
            return TRUE;
        }
        if(!in_array('mod_rewrite', apache_get_modules())){
            // Add index.php to every URL while mod_rewrite is not available
            Kohana::config_set('core.index_page','index.php');
        }
        if ( $this->config->conf['use_url_rewriting'] == 0 ){
            Kohana::config_set('core.index_page','index.php');
        }
    }

    public function isAuthorizedFor($auth) {
        $conf = $this->config->conf;
        if ($auth == "service_links") {

                $users = explode(",", $conf['allowed_for_service_links']);
                if (in_array('EVERYONE', $users)) {
                        return 1;
                }
                elseif (in_array('NONE', $users)) {
                        return 0;
                }
                elseif (in_array($_SERVER["REMOTE_USER"], $users)) {
                        return 1;
                } else {
                        return 0;
                }
        }
        if ($auth == "host_search") {
                $users = explode(",", $conf['allowed_for_host_search']);
                if (in_array('EVERYONE', $users)) {
                        return 1;
                }
                elseif (in_array('NONE', $users)) {
                        return 0;
                }
                elseif (in_array($_SERVER["REMOTE_USER"], $users)) {
                        return 1;
                } else {
                        return 0;
                }
        }
        if ($auth == "host_overview") {
                $users = explode(",", $conf['allowed_for_host_overview']);
                if (in_array('EVERYONE', $users)) {
                        return 1;
                }
                elseif (in_array('NONE', $users)) {
                        return 0;
                }
                elseif (in_array($_SERVER["REMOTE_USER"], $users)) {
                        return 1;
                } else {
                        return 0;
                }
        }
        if ($auth == "pages") {
                $users = explode(",", $conf['allowed_for_pages']);
                if (in_array('EVERYONE', $users)) {
                        return 1;
                }
                elseif (in_array('NONE', $users)) {
                        return 0;
                }
                elseif (in_array($_SERVER["REMOTE_USER"], $users)) {
                        return 1;
                } else {
                        return 0;
                }
        }
    }
}
