import 'package:fis_measure/interfaces/process/calculators/output.dart';
import 'package:fis_measure/interfaces/process/calculators/values.dart';
import 'package:fis_measure/process/calcuators/formulas/general.dart';
import 'package:fis_measure/process/items/item.dart';
import 'package:fis_measure/process/primitives/combos/lwh_straightline.dart';
import 'package:fis_measure/process/primitives/ellipse.dart';
import 'package:fis_measure/process/primitives/straightline.dart';
import 'package:vid/us/vid_us_unit.dart';

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

class VolumeThreeDistanceCal extends Calculator<LWHStraightLine, double> {
  VolumeThreeDistanceCal(LWHStraightLine ref) : super(ref);

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

    final l = pickChildFloatValue(ref.l);
    final w = pickChildFloatValue(ref.w);
    final h = pickChildFloatValue(ref.h);

    final feature = ref.feature!;
    final viewport = feature.hostVisualArea!.viewport!;

    if (l != null && w != null && h != null) {
      final value = GeneralFormulas.volumeWithCoefficient(
        l,
        w,
        h,
        GeneralFormulas.VolumeCofficient,
      );
      updateFloatValue(value);
    }
  }
}

class ThreeDistMeanCalculator extends Calculator<LWHStraightLine, double> {
  ThreeDistMeanCalculator(LWHStraightLine ref) : super(ref);

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

    final l = pickChildFloatValue(ref.l);
    final w = pickChildFloatValue(ref.w);
    final h = pickChildFloatValue(ref.h);

    if (l != null && w != null && h != null) {
      final value = ObstetricsFormulas.gsMean(l, w, h);
      updateFloatValue(value);
    }
  }
}

class ThreeDistMaxCalculator extends Calculator<LWHStraightLine, double> {
  ThreeDistMaxCalculator(LWHStraightLine ref) : super(ref);

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

    final l = findChildFeature(ref.l);
    final w = findChildFeature(ref.w);
    final h = findChildFeature(ref.h);
    if (l == null && w == null && h == null) return;

    double lineL = 0;
    double lineW = 0;
    double lineH = 0;
    if (l != null) lineL = l.value?.pickFloat() ?? 0;
    if (w != null) lineW = w.value?.pickFloat() ?? 0;
    if (h != null) lineH = h.value?.pickFloat() ?? 0;

    double gs = ObstetricsFormulas.gsMax(lineL, lineW, lineH);
    updateFloatValue(gs, unit: VidUsUnit.cm, useRound: true);
  }
}