internal static async Task <Subscription> CreateSubscription(string baseUrl, string userId = null)
{
var graphClient = GraphHelper.GetAuthenticatedClient(string.IsNullOrEmpty(userId) ? CurrentUserId : userId, baseUrl);
var subscription = new Subscription
{
Resource = "me/mailFolders('Inbox')/messages",
ChangeType = "created",
NotificationUrl = ConfigurationManager.AppSettings["ida:NotificationUrl"],
ClientState = Guid.NewGuid().ToString(),
ExpirationDateTime = DateTime.UtcNow + new TimeSpan(0, 0, 15, 0) // shorter duration useful for testing
};
var newSubscription = await graphClient.Subscriptions.Request().AddAsync(subscription);
// This sample temporarily stores the current subscription ID, client state, and user object ID.
// This info is required so the NotificationController, which is not authenticated, can retrieve
// an access token from the cache and validate the subscription.
// Production apps typically use some method of persistent storage.
var subscriptionDetails = new SubscriptionDetails(
newSubscription.Id,
newSubscription.ClientState,
CurrentUserId,
baseUrl);
SubscriptionCache.GetSubscriptionCache().SaveSubscriptionInfo(subscriptionDetails);
return(newSubscription);
}
public static SubscriptionCache GetSubscriptionCache()
{
if (cache != null)
{
return(cache);
}
cache = new SubscriptionCache();
return(cache);
}
