Za vuleta

<?php
/**
 * Created by PhpStorm.
 * User: Buda
 * Date: 1/31/2019
 * Time: 1:30 AM
 */
include "Functions.php";
require_once __DIR__ . '/vendor/autoload.php';


if(isset($_POST["username"]) && isset($_POST['password']))
{
    if($_POST['username']!='' && $_POST['password'] != '')
    {
       $username = $_POST['username'];
       $password = $_POST['password'];
       login($username,$password);

    }else
    {
        $rtnArray = array("err_msg"=> "niste popunili sva polja", 'login'=>false);
        echo json_encode($rtnArray);
    }

}

function login($username,$password)
{
    $query = "SELECT COUNT(id) as num, login_type_id,password FROM login_info WHERE username = ?";
    $stmt = Database::getInstance()->connect()->prepare($query);

    $stmt->bindParam(1,$username);
    $stmt->execute();
    $user_details = $stmt->fetch();

    Database::getInstance()->CloseConnection();


    if($user_details->num != 1)
    {
        $rtn_json =array("err_msg" =>"Pogresili ste username",'login'=>false);
        echo json_encode($rtn_json);

        return;

    } else if (password_verify($password, $user_details->owner_password)) {


        switch ($user_details->login_type_id)
        {
            case 1:
                $query= "SELECT my_gym.contract.contract_id as con_id FROM my_gym.contract JOIN my_gym.owner on my_gym.contract.owner_id = my_gym.owner.owner_id JOIN my_gym.login_info on my_gym.owner.login_info_id = my_gym.login_info.id WHERE login_info_id =?";
                break;
            case 2:
                $query= "SELECT my_gym.employe_contract.id  as con_id FROM my_gym.employe_contract JOIN my_gym.employe ON my_gym.employe_contract.employe_id = my_gym.employe.id JOIN my_gym.login_info on my_gym.employe.login_info_id = my_gym.login_info.id WHERE login_info_id=?";
                break;
            default:
                $rtn_json = array("err_msg"=>"Doslo je do greske","login"=>false);
                exit(json_encode($rtn_json));
        }


        $stmt = Database::getInstance()->connect()->prepared($query);

        $stmt->bindParam(1,$user_details->id);
        $stmt->execute();
        $contract_details = $stmt->fetch();


        $token = (string) Token::getInstance()->makeToken($user_details->login_type_id,$contract_details->con_id);
        $rtn_json = array("token" => $token, 'login'=>true);
        echo json_encode($rtn_json);

        return;

    }else
    {
        $rtn_json = array("err_msg" => "pogresili ste sifru", 'login'=>false);
        echo json_encode($rtn_json);

        return;
    }

}