/// <summary>
/// Adds <see cref="OpenIdAuthenticationMiddleware{TOptions}"/> to the specified
/// <see cref="IApplicationBuilder"/>, which enables OpenID2 authentication capabilities.
/// </summary>
/// <param name="app">The <see cref="IApplicationBuilder"/>.</param>
/// <param name="configuration">The delegate used to configure the OAuth2 options.</param>
/// <returns>The <see cref="IApplicationBuilder"/>.</returns>
public static IApplicationBuilder UseOpenIdAuthentication(
[NotNull] this IApplicationBuilder app,
[NotNull] Action<OpenIdAuthenticationOptions> configuration) {
if (app == null) {
throw new ArgumentNullException(nameof(app));
}
if (configuration == null) {
throw new ArgumentNullException(nameof(configuration));
}
var options = new OpenIdAuthenticationOptions();
configuration(options);
return app.UseMiddleware<OpenIdAuthenticationMiddleware<OpenIdAuthenticationOptions>>(Options.Create(options));
}
