<?php
use lithium\storage\Session;
use lithium\security\Auth;
use lithium\util\String;
use app\models\User; 
use lithium\core\Libraries;
use lithium\action\Dispatcher;
use lithium\net\http\Router;
use lithium\action\Response;


Session::config(array(
	'cookie' => array('adapter' => 'Cookie'),
    'default' => array('adapter' => 'Php'),
    'flash_message' => array('adapter' => 'Php')
));

Auth::config(array(
    'default' => array(
        'adapter'  => 'Form',
        'model'    => 'User',
        'cookie'   => '',
        'fields'   => array('username', 'password'),
        //'scope'    => array('active' => 'true'), //The active field must be true otherwise they can't auth, though we need
        										//to eventually send them to a page that explains they are banned. 
        'session'  => array('options' => array('name' => 'default')),
        'filters'  => array(
	        'password' => function($password) {
	        		return $password; //prevents li3 from hashing the password before hand. 
	        	},

		        function($data) {
			        if (!empty($data['username'])) {
			        	
			        	//Find the first element record that matches the username in the request and get the salt field
			        	$salt = User::find('first', array('conditions' => array('username' => $data['username'])));
			        	
			        	//The password to query is the password from the request
			        	//hashed with the users stored salt
			        	$data['password'] = String::hashPassword($data['password'], $salt->salt); 
	        	}
	        	return $data;
	        })
    )
));

$secret = "cake";

// Adds remember feature for form-based authentications.
Auth::applyFilter('check', function($self, $params, $chain) use ($secret) {
	$query = 'first';
	$scope = array();
	extract($self::invokeMethod('_config', array($params['name'])));
	if ($result = $chain->next($self, $params, $chain)) {
		$request = $params['credentials'];
		if ($request && $adapter == 'Form' && !empty($request->data['remember'])) {
			$data = array_intersect_key($result, array_combine($fields, $fields));
			$data = serialize($data);
			Session::write(
				"Auth.{$params['name']}",
				base64_encode($data),
				array('name' => 'cookie')
			);
		}
		return $result;
	}
	if ($adapter == 'Form') {
		$data = Session::read("Auth.{$params['name']}", array('name' => 'cookie'));
		if ($data) {
			$data = base64_decode($data);
			$data = unserialize($data);
			if (array_keys($data) == $fields) {
				$model = Libraries::locate('models', $model);
				$data = array_map('strval', $data);
				$user = $model::$query($scope + $data);
				if ($user) {
					return $self::set($params['name'], $user->data());
				}
			}
		}
	}
	return $result;
});

// Removes remember cookie after sign out.
Auth::applyFilter('clear', function($self, $params, $chain) {
	$config = $self::invokeMethod('_config', array($params['name']));
	if ($config['adapter'] == 'Form') {
		if (Session::read("Auth.{$params['name']}", array('name' => 'cookie'))) {
			Session::delete("Auth.{$params['name']}", array('name' => 'cookie'));
		}
	}
	return $chain->next($self, $params, $chain);
});

//So that we can filter a bunch of methods in one
Dispatcher::applyFilter('_callable', function($self, $params, $chain) {
   
   //Invoke the _callable method, then execute the logic below
    $ctrl = $chain->next($self, $params, $chain);

    //if the user is logged in
    $user = Auth::check('default');
    if($user)
    {
    	//check if they are accessing an admin function
    	if ($ctrl->request->controller == 'admin' && !($user['level'] == 'root' || $user['level'] == 'admin'))
    	{
    		return function() use ($request) {
    				
    				//Users / index isn't public derp.
        			return new Response(compact('request') + array('location' => '/'));
        		};
    	}
    	
    	//If they aren't trying to access admin, return
    	return $ctrl;
    }
    //If they are performing a public action continue,
    if (isset($ctrl->publicActions) && in_array($params['request']->action, $ctrl->publicActions)) {
        return $ctrl;
    }

    //Otherwise, send them to the login page 
    return function() use ($request) {
        return new Response(compact('request') + array('location' => '/login'));
    };


});


?>