On Friday, September 16, 2016 at 2:49:25 PM UTC+1, Rupert Smith wrote:
> I think I am going to try the solution from the "Inter-Component 
> Communication in 0.17" thread. Which is to create pairs of messaging ports.

The module I came with is below. I can import it anywhere and make use of 
these auth functions - this will come in handy for setting the not authed 
state on any http request that fails with a 401.

I just need to think about how to add functions to query the auth state on 
this module too, as it would also be nice to be able to query that all over 
the place too. Something like

isLoggedIn : Bool
hasPermission : String -> Bool

would cover my needs. Anyway, here is the Auth module:

port module Auth exposing (..)

type alias Credentials =
    { username : String
    , password : String

login : Credentials -> Cmd msg
login authRequest =
    sendLogin authRequest

logout : Cmd msg
logout =
    sendLogout ()

unauthed : Cmd msg
unauthed =
    sendUnauthed ()

port sendLogin : Credentials -> Cmd msg

port sendLogout : () -> Cmd msg

port sendUnauthed : () -> Cmd msg

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