import 'package:fis_measure/interfaces/process/items/terms.dart';
import 'package:fis_measure/process/primitives/rvsp.dart';
import 'package:vid/us/vid_us_unit.dart';

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

class RvspCal extends Calculator<Rvsp, double> {
  RvspCal(super.ref);

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

    final feature = ref.feature!;

    final tRVmax = pickChildFloatValue(ref.tRVmax);
    if (tRVmax == null) {
      updateStringValue("");
      return;
    }

    final rap = ref.rap.value ?? 0;

    final rvsp = GeneralFormulas.countPressure(tRVmax) + rap;

    // TODO: ??? PG=RVSP-RAP
    final pg = rvsp - rap;

    for (var output in ref.meta.outputs) {
      switch (output.name) {
        case MeasureTerms.RVSP:
          updateFloatValue(rvsp);
          break;
        case MeasureTerms.RAP:
          feature.updateFloatValue(output, rap, VidUsUnit.mmHg);
          break;
        case MeasureTerms.PG:
          feature.updateFloatValue(output, pg, VidUsUnit.mmHg);
          break;
      }
    }
  }
}