Showing login token error message in the UI

2 files changed, 16 insertions, 3 deletions

diff --git a/src/client/Main.elm b/src/client/Main.elm
index e79fe2b..519360a 100644
--- a/src/client/Main.elm
+++ b/src/client/Main.elm
@@ -15,6 +15,7 @@ import Model exposing (Model, initialModel)
 import Model.Payment exposing (Payments, paymentsDecoder)
 
 import Update exposing (Action(..), actions, updateModel)
+import Update.SignIn exposing (..)
 
 import View.Page exposing (renderPage)
 
@@ -28,13 +29,21 @@ main = Signal.map renderPage model
 model : Signal Model
 model = Signal.foldp updateModel initialModel actions.signal
 
+-------------------------
+
+port signInError : Maybe String
+
 ---------------------------------------
 
 port fetchPayments : Task Http.Error ()
 port fetchPayments =
-  getPayments
-    |> flip Task.andThen reportSuccess
-    |> flip Task.onError reportError
+  case signInError of
+    Just msg ->
+      Signal.send actions.address (SignInError msg)
+    Nothing ->
+      getPayments
+        |> flip Task.andThen reportSuccess
+        |> flip Task.onError reportError
 
 reportSuccess : Payments -> Task x ()
 reportSuccess payments = Signal.send actions.address (UpdatePayments payments)
diff --git a/src/client/Update.elm b/src/client/Update.elm
index 1d0fe95..508ee2f 100644
--- a/src/client/Update.elm
+++ b/src/client/Update.elm
@@ -14,6 +14,7 @@ import Update.SignIn exposing (..)
 type Action =
   NoOp
   | SignIn
+  | SignInError String
   | UpdateSignIn SignInAction
   | UpdatePayments Payments
 
@@ -27,6 +28,9 @@ updateModel action model =
       model
     SignIn ->
       { model | view <- SignInView initSignIn }
+    SignInError msg ->
+      let signIn = { initSignIn | result <- Just (Err msg) }
+      in  { model | view <- SignInView signIn }
     UpdateSignIn signInAction ->
       case model.view of
         SignInView signIn ->