import 'ffi.dart' as ffi;
export 'ffi.dart' show Sex;

class Exercise {
  ffi.RwLockExercise? ptr;

  Future<void> init() async {
    ptr = await ffi.api.newExercise();
  }

  Future<void> set({
    required int age,
    required ffi.Sex sex,
    required double weightKg,
    required double heightCm,
    required double rhr,
  }) {
    return ffi.api.runExerciseSet(
        exercise: ptr!,
        age: age,
        sex: sex,
        weightKg: weightKg,
        heightCm: heightCm,
        rhr: rhr);
  }


  Future<void> hrPush(int hr, DateTime ts)async{
    if(ptr != null){
      await ffi.api.runExerciseHrPush(
          exercise: ptr!,
          hr: ffi.HR(hr: hr, timeMs: ts.millisecondsSinceEpoch));
    }
  }
  Future<double> hrPercent(int hr){
    return ffi.api.runExerciseHrPercent(
        exercise: ptr!,
        hr: hr);
  }
  Future<double> ei(){
    return ffi.api.runExerciseEi(exercise: ptr!);
  }
  Future<double> ck(){
    return ffi.api.runExerciseCk(exercise: ptr!);
  }
  Future<double> kCal(){
    return ffi.api.runExerciseKcal(exercise: ptr!);
  }
  Future<double> exerciseKcal(){
    return ffi.api.runExerciseExerciseKcal(exercise: ptr!);
  }
  Future<int> hrMean(){
    return ffi.api.runExerciseHrMean(exercise: ptr!);
  }
  Future<int> hrMax(){
    return ffi.api.runExerciseHrMax(exercise: ptr!);
  }


  void close() {
    ptr?.dispose();
    ptr = null;
  }
}