public async Task <IActionResult> AddFriend(string id)
        {
            if (string.IsNullOrEmpty(id))
            {
                ModelState.AddModelError("null_id", "id string can't be empty.");
                return(BadRequest(ModelState));
            }

            var user = await _profileService.QueryUserOrDefault(id, User);

            if (user == null)
            {
                ModelState.AddModelError("null_profile", "can't find user profile with specified id.");
                return(BadRequest(ModelState));
            }

            var result = await _profileService.AddFriend(id, User);

            if (result == false)
            {
                ModelState.AddModelError("null_profile", "can't find user profile with specified id.");
                return(BadRequest(ModelState));
            }

            return(Ok());
        }
 public ActionResult Message()
 {
     profileService.AddFriend(1, 2);
     return(RedirectToAction("Home", "Profile"));
 }