1 files changed, 16 insertions, 0 deletions
diff --git a/src/Update/UpdateTimer.elm b/src/Update/UpdateTimer.elm
new file mode 100644
index 0000000..d8861b7
--- /dev/null
+++ b/src/Update/UpdateTimer.elm
@@ -0,0 +1,16 @@
+module Update.UpdateTimer
+  ( TimerAction(..)
+  , updateTimer
+  ) where
+
+import Model.Timer (..)
+import Model.Id (..)
+
+type TimerAction =
+  ToggleRunning
+
+updateTimer : TimerAction -> Timer -> Timer
+updateTimer action timer =
+  case action of
+    ToggleRunning ->
+      { timer | isRunning <- not timer.isRunning }