public async Task <LoggedOutResult> LogOut(string logoutId, Option <ClaimsPrincipal> user, Func <string, Task <bool> > schemeSupportsSignoutLookup)
{
// get context information (client name, post logout redirect URI and iframe for federated signout)
var logoutRequest = (await _interaction.GetLogoutContextAsync(logoutId)).SomeNotNull();
var logoutResult = new LoggedOutResult
{
AutomaticRedirectAfterSignOut = AccountOptions.AutomaticRedirectAfterSignOut,
PostLogoutRedirectUri = logoutRequest.Map(x => x.PostLogoutRedirectUri),
ClientName = logoutRequest.FlatMap(x => x.ClientName.SomeNotNull().Filter(cn => !string.IsNullOrEmpty(cn)).Else(x.ClientId.SomeNotNull())),
SignOutIframeUrl = logoutRequest.Map(x => x.SignOutIFrameUrl),
LogoutId = logoutId
};
// perform ext ID-provider signout if applicable
await user
.FlatMap(u => u.FindFirst(JwtClaimTypes.IdentityProvider).SomeNotNull())
.Filter(idpClaim => idpClaim.Value != IdentityServerConstants.LocalIdentityProvider)
.MatchSomeAsync(async extIdpClaim =>
{
if (await schemeSupportsSignoutLookup(extIdpClaim.Value))
{
if (logoutResult.LogoutId == null)
{
// if there's no current logout context, we need to create one
// this captures necessary info from the current logged in user
// before we signout and redirect away to the external IdP for signout
logoutResult.LogoutId = await _interaction.CreateLogoutContextAsync();
}
logoutResult.ExternalAuthenticationScheme = extIdpClaim.Value;
}
});
// raise the logout event
await user.MatchSomeAsync(u => _events.RaiseAsync(new UserLogoutSuccessEvent(u.GetSubjectId(), u.GetDisplayName())));
return(logoutResult);
}
public LoggedOutViewModel(LoggedOutResult logoutResult)
{
_logoutResult = logoutResult;
}