public Function(IConfiguration configuration)
{
this.configuration = configuration;
this.azureAdB2COptions = new AzureAdB2COptions();
configuration.GetSection(nameof(azureAdB2COptions)).Bind(azureAdB2COptions);
}
public async Task <AuthenticationResult> GetAuthenticationResultAsync(Uri redirectUri, AzureAdB2COptions options)
{
IConfidentialClientApplication app = ConfidentialClientApplicationBuilder.Create($"{options.ClientId}")
.WithRedirectUri(redirectUri.AbsoluteUri)
.WithClientSecret(options.ClientSecret)
.WithB2CAuthority(options.Authority)
.Build();
// make sure you cannot use Refresh Token with MSAL anymore.
var scopes = options.ApiScopes.Split(' ');
// OAuth authorization code is contains in `code`, short live 10min.
// https://docs.microsoft.com/ja-jp/azure/active-directory-b2c/active-directory-b2c-reference-oauth-code
var auth = await app.AcquireTokenByAuthorizationCode(scopes, code).ExecuteAsync();
return(auth);
}