public async Task <ApiResponse> Logout()
{
var response = await _accountManager.Logout(User);
var vm = await _accountManager.BuildLoggedOutViewModelAsync(User, HttpContext, null);
// check if we need to trigger sign-out at an upstream identity provider
if (vm.TriggerExternalSignout)
{
// build a return URL so the upstream provider will redirect back
// to us after the user has logged out. this allows us to then
// complete our single sign-out processing.
string url = Url.Action("Logout", new { logoutId = vm.LogoutId });
// this triggers a redirect to the external provider for sign-out
SignOut(new AuthenticationProperties {
RedirectUri = url
}, vm.ExternalAuthenticationScheme);
}
return(response);
}