fix(watch): advance rep based on distance swum instead of lap count

targets/watch/WorkoutManager.swift

@@ -11,7 +11,7 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
     @Published var selectedWorkout: StoredWorkout?
     @Published var currentSetIndex = 0
     @Published var currentRep = 0
-    @Published var currentLapDistance = 0
+    @Published var currentRepDistanceSwum: Int = 0
     @Published var elapsedSeconds: TimeInterval = 0
     @Published var heartRate: Double = 0
     @Published var activeCalories: Double = 0
@@ -157,6 +157,7 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
         completedLaps = []
         healthKitLapCount = 0
         currentStrokeCount = 0
+        currentRepDistanceSwum = 0
 
         startHealthKitWorkout(poolLength: selectedWorkout?.poolLength ?? 25)
         startHeartRateQuery()
@@ -235,6 +236,8 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
         guard let workout = selectedWorkout else { return }
         let currentSet = workout.sets[currentSetIndex]
 
+        currentRepDistanceSwum = 0
+
         if currentRep + 1 < currentSet.repCount {
             currentRep += 1
             lapStartTime = Date()
@@ -296,10 +299,9 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
     }
 
     var currentSetDistanceSwum: Double {
-        guard let workout = selectedWorkout, currentSetIndex < workout.sets.count else { return 0 }
-        let setDistance = workout.sets[currentSetIndex].distancePerRep
-        let completedInSet = completedLaps.filter { $0.setPosition == currentSetIndex + 1 }.count
-        return Double(setDistance) * Double(completedInSet)
+        completedLaps
+            .filter { $0.setPosition == currentSetIndex + 1 }
+            .reduce(0) { $0 + Double($1.distance) }
     }
 
     var currentSetTotalDistance: Double {
@@ -490,11 +492,12 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
 
         let now = Date()
         let duration = lapStartTime.map { now.timeIntervalSince($0) } ?? 0
+        let lapDistance = Int(workout.poolLength)
 
         let lap = CompletedLap(
             setPosition: currentSetIndex + 1,
             repNumber: currentRep + 1,
-            distance: workout.sets[currentSetIndex].distancePerRep,
+            distance: lapDistance,
             duration: duration,
             heartRate: Int(heartRate),
             strokeType: workout.sets[currentSetIndex].stroke,
@@ -503,6 +506,8 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
         completedLaps.append(lap)
         currentStrokeCount = 0
 
+        currentRepDistanceSwum += lapDistance
+
         WKInterfaceDevice.current().play(.click)
 
         DispatchQueue.main.async {
@@ -512,7 +517,9 @@ class WorkoutManager: NSObject, ObservableObject, HKLiveWorkoutBuilderDelegate {
             self.lapDetected = false
         }
 
+        if currentRepDistanceSwum >= workout.sets[currentSetIndex].distancePerRep {
             advanceToNextRep()
+        }
         lapStartTime = Date()
     }