# Functions
GetLoggedInUserID gets the logged in user ID from the session.
GetRedirectData gets the redirect URI from the session with request payload.
GetReturnURI gets the return URI from the session.
IsLoggedIn checks if the user is logged in.
Logout logs the user out.
StoreCurrentURI stores the current URI in the session as the return URI.
StoreLoggedInUserID stores the logged in user ID in the session.
StoreRedirectData stores the redirect URI in the session with request payload.
StoreReturnURI stores the return URI in the session.
# Constants
LoggedInUserIDKey is the key used to store the logged in user ID in the session.
RedirectDataKey is the key used to store the redirect URI in the session.
ReturnURIKey is the key used to store the return URI in the session.