private static async Task ObtainTokenAndSetOnClient(FhirClient fhirClient, List <KeyValuePair <string, string> > formData)
{
using var formContent = new FormUrlEncodedContent(formData);
using HttpResponseMessage tokenResponse = await fhirClient.HttpClient.PostAsync(fhirClient.TokenUri, formContent);
var openIdConnectMessage = new OpenIdConnectMessage(await tokenResponse.Content.ReadAsStringAsync());
fhirClient.SetBearerToken(openIdConnectMessage.AccessToken);
}
/// <summary>
/// Sets the authenticated token on the FhirClient to the supplied resource via Managed Identity.
/// </summary>
/// <param name="fhirClient">The FhirClient to authenticate.</param>
/// <param name="resource">The resource to obtain a token to.</param>
/// <returns>A task representing the successful setting of the token.</returns>
public static async Task AuthenticateWithManagedIdentity(this FhirClient fhirClient, string resource)
{
EnsureArg.IsNotNull(fhirClient, nameof(fhirClient));
EnsureArg.IsNotNullOrWhiteSpace(resource, nameof(resource));
var azureServiceTokenProvider = new AzureServiceTokenProvider();
string accessToken = await azureServiceTokenProvider.GetAccessTokenAsync(resource);
fhirClient.SetBearerToken(accessToken);
}
