public async Task <IActionResult> Index()
{
string accessToken = "";
using (var httpClient = _httpClientFactory.CreateClient())
{
var dictionary = _configuration.GetSection("AzureAd").GetChildren()
.Select(item => new KeyValuePair <string, string>(item.Key, item.Value))
.ToDictionary(x => x.Key, x => x.Value);
dictionary["userName"] = User.Identity.Name;
try
{
//obtain an access token if it exists in the token cache.
//if no access token exists in the token cache an error will be thrown
accessToken = await _tokenHandler.GetAccessTokenSilently(dictionary);
}
catch (Exception e)
{
//catches error thrown if no token exists in the token cache. Will cause a redirect to sign the user in
//and run through the authN process to ensure an access token is loaded into the token cache
return(RedirectToAction("SignIn", "Account"));
}
//uses access token to call ModernAuth_API
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
var response = await httpClient.GetAsync(_configuration["apiURL"] + dictionary["userName"]);
var responseContent = await response.Content.ReadAsStringAsync();
//Deserializes user data returned from Graph API, which is called by ModernAuth_API.
var userBody = JsonConvert.DeserializeObject <User>(responseContent);
return(View(userBody));
}
}