<?php

/**
*	Authentication class
*
*	@version 2.1
*	@author  Nick Sheffield
*
*/

namespace App;

session_start();

require_once 'url.lib.php';
require_once 'config.lib.php';
require_once 'model.lib.php';

use App\Model\Model;

class Auth{
	
	public static $user = null;

	public static function log_in($id = 0, $admin = false){
		self::create_user();

		if($id != 0){
			$_SESSION[Config::$sitename]['user']['id'] = $id;
		}

		$_SESSION[Config::$sitename]['user']['is_admin'] = $admin;
		$_SESSION[Config::$sitename]['user']['logged_in'] = true;
	}


	public static function log_out(){
		self::create_user();
		$_SESSION[Config::$sitename]['user']['id'] = 0;
		$_SESSION[Config::$sitename]['user']['is_admin'] = false;
		$_SESSION[Config::$sitename]['user']['logged_in'] = false;
	}


	public static function kickout($url = 'login.php'){
		self::create_user();
		if($_SESSION[Config::$sitename]['user']['logged_in'] == false){
			URL::redirect($url);
		}
	}

	public static function kickout_non_admin($url = 'index.php'){
		self::create_user();
		if($_SESSION[Config::$sitename]['user']['logged_in'] == false || $_SESSION[Config::$sitename]['user']['is_admin'] == false){
			URL::redirect($url);
		}
	}


	public static function user_id(){
		self::create_user();
		return $_SESSION[Config::$sitename]['user']['id'];
	}


	public static function is_admin(){
		self::create_user();
		return !!$_SESSION[Config::$sitename]['user']['is_admin'];
	}


	public static function is_logged_in(){
		self::create_user();
		return !!$_SESSION[Config::$sitename]['user']['logged_in'];
	}


	public static function user(){
		return self::$user;
	}


	private static function create_user(){
		if(!isset($_SESSION[Config::$sitename]['user'])){
			$_SESSION[Config::$sitename]['user'] = array();
			$_SESSION[Config::$sitename]['user']['id'] = 0;
			$_SESSION[Config::$sitename]['user']['is_admin'] = false;
			$_SESSION[Config::$sitename]['user']['logged_in'] = false;
		}
	}
}


if(Config::$auth_table && Auth::is_logged_in() && Config::$database['database']){
	Auth::$user = new Model(Config::$auth_table);
	Auth::$user->load(Auth::user_id());
}