1 files changed, 21 insertions, 0 deletions
diff --git a/src/client/elm/LoggedIn/Home/Monthly/Update.elm b/src/client/elm/LoggedIn/Home/Monthly/Update.elm
new file mode 100644
index 0000000..70b2f9c
--- /dev/null
+++ b/src/client/elm/LoggedIn/Home/Monthly/Update.elm
@@ -0,0 +1,21 @@
+module LoggedIn.Home.Monthly.Update
+  ( update
+  ) where
+
+import LoggedIn.Home.Monthly.Action as MonthlyAction
+import LoggedIn.Home.Monthly.Model as MonthlyModel
+
+update : MonthlyAction.Action -> MonthlyModel.Model -> MonthlyModel.Model
+update action monthly =
+  case action of
+    MonthlyAction.ToggleDetail ->
+      { monthly | visibleDetail = not monthly.visibleDetail }
+    MonthlyAction.AddPayment payment ->
+      { monthly
+      | payments = payment :: monthly.payments
+      , visibleDetail = True
+      }
+    MonthlyAction.DeletePayment payment ->
+      { monthly
+      | payments = List.filter (((/=) payment.id) << .id) monthly.payments
+      }