public async Task <string> GetLoginJavascriptCode(ClaimsIdentity identity, string returnUrl)
{
identity.CheckNotNull(nameof(identity));
UserClientStore.CheckNotNull(nameof(UserClientStore));
var userClients = UserClientStore.GetUserClients(identity.Name);
var allowHosts = userClients.Where(p => !p.Host.IsNullOrWhiteSpace()).Select(p => p.Host).ToList();
identity = identity.InitializeWithAllowHosts(allowHosts);
var token = await GenerateToken(identity);
var loginNotifyUrls =
userClients.Where(p => !p.LoginNotifyUrl.IsNullOrWhiteSpace()).Select(p => p.LoginNotifyUrl).ToList();
return(Javascript.GetLoginCode(token, loginNotifyUrls, returnUrl));
}