import 'package:fis_measure/interfaces/enums/items.dart';
import 'package:fis_measure/interfaces/process/calculators/values.dart';
import 'package:fis_measure/interfaces/process/items/item.dart';
import 'package:fis_measure/interfaces/process/items/item_metas.dart';
import 'package:fis_measure/interfaces/process/items/terms.dart';
import 'package:fis_measure/interfaces/process/workspace/point_info.dart';
import 'package:fis_measure/process/calcuators/rvsp.dart';
import 'package:fis_measure/process/calcuators/velocity.dart';
import 'package:fis_measure/process/items/top_item.dart';
import 'package:fis_measure/process/items/top_item_feature.dart';
import 'package:vid/us/vid_us_unit.dart';

import 'location.dart';

class Rvsp extends TopMeasureItem<RvspFeature> {
  static const String tRVmaxKey = "TR Vmax";

  late final Location tRVmax;
  late final FloatValue _rap;

  Rvsp(super.meta) {
    final tRVmaxMeta = meta.getChildByName(tRVmaxKey)!;
    tRVmax = _TRVmaxLocation(tRVmaxMeta, this);
    tRVmax.calculator = VelocityCal(tRVmax);
    childItems.add(tRVmax);

    final rapOutputMeta =
        ItemOutputMeta(MeasureTerms.RAP, "RAP", VidUsUnit.mmHg);

    _rap = FloatValue(rapOutputMeta, 0.0, rapOutputMeta.unit);
  }

  FloatValue get rap => _rap;

  @override
  bool get repeatableEditable => false;

  @override
  bool get finishAfterUnactive => true;

  @override
  RvspFeature buildFeature() => RvspFeature(this);

  @override
  bool onExecuteMouse(PointInfo args) {
    if (feature == null) {
      feature = buildFeature();
      listenChildrenUpdate();
    }
    if (args.pointType == PointInfoType.mouseDown) {
      if (childrenAllDone) {
        workingChild.clear();
      }
    }
    feature?.hostVisualArea = args.hostVisualArea;
    if (!childrenAllDone) {
      final result = workingChild.execute(args);
      if (result) {
        doCalculate();
      }
      return result;
    }
    return true;
  }

  void updateRap(double val) {
    _rap.value = val;
    calculator?.calculate();
    update();
  }

  static Rvsp createRvsp(
    ItemMeta meta, [
    IMeasureItem? parent,
  ]) {
    Rvsp ins = Rvsp(meta);
    ins.calculator = RvspCal(ins);
    return ins;
  }
}

class RvspFeature extends TopMeasureItemFeature {
  RvspFeature(
    ITopMeasureItem refItem,
  ) : super(refItem);
}

class _TRVmaxLocation extends Location {
  _TRVmaxLocation(super.meta, super.parent);

  @override
  bool onExecuteMouse(PointInfo args) {
    if (state == ItemStates.finished || state == ItemStates.waiting) {
      if (args.pointType == PointInfoType.mouseDown) {
        measuredFeatures.clear();
      } else if (args.pointType == PointInfoType.mouseMove) {
        handleMouseMoveWhileFinish(args);
      }
    }
    if (state == ItemStates.running) {
      if (args.pointType == PointInfoType.mouseUp) return false;

      feature?.point = args;
      doCalculate();
      if (args.pointType == PointInfoType.mouseDown) {
        doFeatureFinish();
      }
    }
    return true;
  }
}