<?php
use \Firebase\JWT\JWT;

class AuthenticationToken {

    private $auth;
    private $token;
    private $response;
/*
    public function getAuthorizationHeader(){
        $headers = null;
        if (isset($_SERVER['Authorization'])) {
            $headers = trim($_SERVER["Authorization"]);
        }
        else if (isset($_SERVER['HTTP_AUTHORIZATION'])) { //Nginx or fast CGI
            $headers = trim($_SERVER["HTTP_AUTHORIZATION"]);
        } elseif (function_exists('apache_request_headers')) {
            $requestHeaders = apache_request_headers();
            // Server-side fix for bug in old Android versions (a nice side-effect of this fix means we don't care about capitalization for Authorization)
            $requestHeaders = array_combine(array_map('ucwords', array_keys($requestHeaders)), array_values($requestHeaders));
            //print_r($requestHeaders);
            if (isset($requestHeaders['Authorization'])) {
                $headers = trim($requestHeaders['Authorization']);
            }
        }
        return $headers;
    }*/

  public function tokenGet() {

    $this->auth = null;
    $requestHeaders = apache_request_headers();
    $requestHeaders = array_combine(array_map('ucwords', array_keys($requestHeaders)), array_values($requestHeaders));

    if(isset($requestHeaders['Authorization'])) {
      $headers = trim($requestHeaders['Authorization']);
    }

    if(!empty($headers)) {
      if(preg_match('/Bearer\s(\S+)/', $headers, $matches)) {
        $this->auth = $matches[1];
      }
    }

    return $this->auth;
  }

  public function tokenCheck($secret) {

    $this->token = $this->tokenGet();
    $this->response = array();

    try {

      $decoded = JWT::decode($this->token, $secret, array('HS256'));
      $this->response = array(
        "status" => 200,
        "access" => "GRANTED",
        "token" => $this->token//$decoded
      );

    } catch(Exception $e) {

      $this->response = array(
        "status" => 401,
        "access" => "DENIED",
        "error" => $e->getMessage()
      );
    }

    return $this->response;
  }
}
?>