<?php

class REST {

   public $_allow = array();
   public $_content_type = "application/json";
   public $_request = array();

   private $_method = "";
   protected $_endpoint = "";
   protected $_verb = "";
   protected $_args = Array();
   private $_code = 200;

   public function __construct(){
      $this->inputs();
   }

   public function get_referer(){
      return $_SERVER['HTTP_REFERER'];
   }

   public function response($data,$status){
      $this->_code = ($status)?$status:200;
      $this->set_headers();
      echo $data;
      exit;
   }

   private function get_status_message(){
      $status = array(
    100 => 'Continue',
    101 => 'Switching Protocols',
    200 => 'OK',
    201 => 'Created',
    202 => 'Accepted',
    203 => 'Non-Authoritative Information',
    204 => 'No Content',
    205 => 'Reset Content',
    206 => 'Partial Content',
    300 => 'Multiple Choices',
    301 => 'Moved Permanently',
    302 => 'Found',
    303 => 'See Other',
    304 => 'Not Modified',
    305 => 'Use Proxy',
    306 => '(Unused)',
    307 => 'Temporary Redirect',
    400 => 'Bad Request',
    401 => 'Unauthorized',
    402 => 'Payment Required',
    403 => 'Forbidden',
    404 => 'Not Found',
    405 => 'Method Not Allowed',
    406 => 'Not Acceptable',
    407 => 'Proxy Authentication Required',
    408 => 'Request Timeout',
    409 => 'Conflict',
    410 => 'Gone',
    411 => 'Length Required',
    412 => 'Precondition Failed',
    413 => 'Request Entity Too Large',
    414 => 'Request-URI Too Long',
    415 => 'Unsupported Media Type',
    416 => 'Requested Range Not Satisfiable',
    417 => 'Expectation Failed',
    500 => 'Internal Server Error',
    501 => 'Not Implemented',
    502 => 'Bad Gateway',
    503 => 'Service Unavailable',
    504 => 'Gateway Timeout',
    505 => 'HTTP Version Not Supported');
    return ($status[$this->_code])?$status[$this->_code]:$status[500];
   }

   public function get_request_method(){
      return $_SERVER['REQUEST_METHOD'];
   }

   private function inputs(){
      $this->_args = explode('/', rtrim($_REQUEST['rquest'], '/'));
      $this->_endpoint = array_shift($this->_args);

      switch($this->get_request_method()){
     case "POST":
            $this->_request = file_get_contents("php://input") ;
        $this->_request = $this->cleanInputs($this->_request);
        break;
     case "GET":
        $this->_request = $this->cleanInputs($_GET);
        break;
     case "DELETE":
        $this->_request = $this->cleanInputs($_GET);
            break;
     case "PUT":
            $this->_request = file_get_contents("php://input") ;
            $this->_request = $this->cleanInputs($this->_request);
            break;
     default:
        $this->response('',406);
        break;
      }
   }

   private function cleanInputs($data){
      $clean_input = array();
      if(is_array($data)){
     foreach($data as $k => $v){
        $clean_input[$k] = $this->cleanInputs($v);
     }
      } else {
     if(get_magic_quotes_gpc()){
         $data = trim(stripslashes($data));
     }
     $data = strip_tags($data);
     $clean_input = trim($data);
      }
      return $clean_input;
   }

   private function set_headers(){
      header("HTTP/1.1 ".$this->_code." ".$this->get_status_message());
      header("Content-Type:".$this->_content_type);
   }

}
?>