fis_lib_measure/lib/process/calcuators/lv_mass.dart

import 'package:fis_measure/configs/patient.dart';
import 'package:fis_measure/interfaces/process/items/terms.dart';
import 'package:fis_measure/process/primitives/combos/lv_mass.dart';
import 'package:vid/us/vid_us_unit.dart';

import 'calculator.dart';
import 'formulas/cardiac.dart';

class LvdMassALCal extends Calculator<LVMass, double> {
  LvdMassALCal(super.ref);

  @override
  void calculate() {
    if (ref.feature == null) return;

    final feature = ref.feature!;

    double? epi = pickChildFloatValue(ref.epi);
    double? endo = pickChildFloatValue(ref.endo);
    double? l = pickChildFloatValue(ref.l);

    double? lvdmass;
    double? lvdMassIndex;
    if (epi != null && endo != null && l != null) {
      lvdmass = CardiacFormulas.lvdMassAL(epi, endo, l);
    }
    if (lvdmass != null && GlobalPatientConfig.bsa > 0) {
      lvdMassIndex =
          CardiacFormulas.lvdMassIndex(lvdmass, GlobalPatientConfig.bsa);
    }

    for (var output in ref.meta.outputs) {
      switch (output.name) {
        case MeasureTerms.LVdMass:
          if (lvdmass != null) {
            feature.updateFloatValue(output, lvdmass, VidUsUnit.kg);
          }
          break;
        case MeasureTerms.LVdMassIndex:
          if (lvdMassIndex != null) {
            feature.updateFloatValue(output, lvdMassIndex, VidUsUnit.gm2);
          }
          break;
      }
    }
  }
}