public IHttpActionResult getUserLogin()
        {
            IEnumerable <string> headerValues;

            headerValues = Request.Headers.GetValues("username");
            String username = headerValues.FirstOrDefault();


            headerValues = Request.Headers.GetValues("password");
            String password = headerValues.FirstOrDefault();

            using (var context = new EntityFrameworkModels.birdtouchEntities2())
            {
                var ResultSetUserInfo = (from s in context.users
                                         join sa in context.user_info on s.id equals sa.id_user_private
                                         where s.username == username && s.password == password
                                         select new User()
                {
                    Id = s.id,
                    Username = s.username,
                    FirstName = sa.firstName,
                    LastName = sa.lastName,
                    Email = sa.email,
                    PhoneNumber = sa.phoneNumber,
                    DateOfBirth = sa.dateOfBirth,
                    Adress = sa.adress,
                    ProfilePictureData = sa.profilePictureData,
                    FbLink = sa.fbLink,
                    TwitterLink = sa.twLink,
                    GPlusLink = sa.gPlusLink,
                    LinkedInLink = sa.linkedInLink
                });

                var userInfo = ResultSetUserInfo.FirstOrDefault <User>();
                if (userInfo != null)
                {
                    UserEncodedImage userEncoded = new UserEncodedImage() //novaKlasa zbog base64string konverzije niza bajtova
                    {
                        Adress       = userInfo.Adress,
                        DateOfBirth  = userInfo.DateOfBirth,
                        Email        = userInfo.Email,
                        FbLink       = userInfo.FbLink,
                        FirstName    = userInfo.FirstName,
                        Username     = userInfo.Username,
                        GPlusLink    = userInfo.GPlusLink,
                        Id           = userInfo.Id,
                        LastName     = userInfo.LastName,
                        LinkedInLink = userInfo.LinkedInLink,
                        PhoneNumber  = userInfo.PhoneNumber,
                        TwitterLink  = userInfo.TwitterLink,
                    };

                    if (userInfo.ProfilePictureData != null)
                    {
                        userEncoded.ProfilePictureDataEncoded = Convert.ToBase64String(userInfo.ProfilePictureData);
                    }
                    return(Ok(userEncoded)); //  String serialized = Newtonsoft.Json.JsonConvert.SerializeObject(userEncoded);
                }
            }

            return(NotFound());
        }
        public IHttpActionResult getPrivateUsersNearMe()

        {
            IEnumerable <string> headerValues;

            headerValues = Request.Headers.GetValues("id");
            String id  = headerValues.FirstOrDefault();
            int    id5 = Int32.Parse(id);


            //mozda da se napravi jos jedan parametar za radijus

            decimal?mineLongitude = 0;
            decimal?mineLatitude  = 0;


            using (var context = new EntityFrameworkModels.birdtouchEntities2())
            {
                var me = context.active_users.SingleOrDefault(x => x.user_id == id5 && x.active_mode == 1);
                mineLatitude  = me.location_latitude;
                mineLongitude = me.location_longitude;

                //sada imamo moju lokaciju iz baze


                List <int?> listOfUsersIdAroundMe = new List <int?>();


                foreach (var active_user in context.active_users)
                {
                    if (active_user.user_id != id5 && active_user.active_mode == 1)   //da ne uporedjujemo sa samim sobom
                    {
                        double distance = new Coordinates((double)mineLatitude, (double)mineLongitude)
                                          .DistanceTo(
                            new Coordinates((double)active_user.location_latitude, (double)active_user.location_longitude),
                            UnitOfLength.Kilometers
                            );

                        if (distance < 1.5)
                        {
                            listOfUsersIdAroundMe.Add(active_user.user_id);
                        }
                    }
                }



                var tempResult = context.user_info.Where(x => listOfUsersIdAroundMe.Contains(x.id_user_private)).ToList <EntityFrameworkModels.user_info>();


                //ovaj deo koji sledi mozda nije potreban, treba ispitati da li moze bez ovog encoded dela, ali ovako je jasnije
                //takodje, username ostaje null zbog zastite

                List <UserEncodedImage> result = new List <UserEncodedImage>();

                foreach (var item in tempResult)
                {
                    UserEncodedImage userEncoded = new UserEncodedImage()
                    {
                        Adress       = item.adress,
                        DateOfBirth  = item.dateOfBirth,
                        Email        = item.email,
                        FbLink       = item.fbLink,
                        FirstName    = item.firstName,
                        GPlusLink    = item.gPlusLink,
                        Id           = item.id_user_private,
                        LastName     = item.lastName,
                        LinkedInLink = item.linkedInLink,
                        PhoneNumber  = item.phoneNumber,
                        TwitterLink  = item.twLink
                    };
                    if (item.profilePictureData != null)
                    {
                        userEncoded.ProfilePictureDataEncoded = Convert.ToBase64String(item.profilePictureData);
                    }


                    result.Add(userEncoded);
                }

                return(Ok(result));
            }
        }