public async Task <IActionResult> AuthReturn(
            [FromQuery] string code,
            [FromQuery] string state)
        {
            var stateFromCookie = HttpContext.Session.GetString(_githubSessionSettings.StateKey);

            if (stateFromCookie != state)
            {
                return(RedirectToAction("Index", "Home"));
            }

            var accessToken = await _githubService.GetAccessToken(code);

            HttpContext.Session.SetString(_githubSessionSettings.AccessTokenKey, accessToken);

            return(RedirectToAction("Repositories"));
        }