1 files changed, 27 insertions, 0 deletions
diff --git a/src/client/elm/Update/LoggedIn/Monthly.elm b/src/client/elm/Update/LoggedIn/Monthly.elm
new file mode 100644
index 0000000..1379323
--- /dev/null
+++ b/src/client/elm/Update/LoggedIn/Monthly.elm
@@ -0,0 +1,27 @@
+module Update.LoggedIn.Monthly
+  ( MonthlyAction(..)
+  , updateMonthly
+  ) where
+
+import Model.Payment exposing (Payment, PaymentId)
+import Model.View.LoggedIn.Monthly exposing (..)
+
+type MonthlyAction =
+  ToggleDetail
+  | AddPayment Payment
+  | DeletePayment PaymentId
+
+updateMonthly : MonthlyAction -> Monthly -> Monthly
+updateMonthly action monthly =
+  case action of
+    ToggleDetail ->
+      { monthly | visibleDetail <- not monthly.visibleDetail }
+    AddPayment payment ->
+      { monthly
+      | payments <- payment :: monthly.payments
+      , visibleDetail <- True
+      }
+    DeletePayment id ->
+      { monthly
+      | payments <- List.filter (\payment -> payment.id /= id) monthly.payments
+      }