fis_lib_measure/lib/view/result/converter.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_feature.dart';
import 'package:fis_measure/interfaces/process/items/item_metas.dart';
import 'package:fis_measure/process/unit/convert/convert.dart';
import 'package:fis_measure/values/unit_desc.dart';
import 'package:fis_measure/view/result/results_panel.dart';

class FeatureValueDescConverter {
  final IMeasureItemFeature feature;
  FeatureValueDescConverter(this.feature);

  String idPlaceStr = ' ';
  String idStr = ' ';

  List<ResultLine> generate(int idLength) {
    idPlaceStr = ' '.padRight(idLength, ' ');
    idStr = feature.id.toString().padRight(idLength, ' ');

    final List<ResultLine> arr = [];
    final mainLines = _findFeatureLines(feature);
    arr.addAll(mainLines);

    final ref = feature.refItem;
    if (ref is ITopMeasureItem) {
      for (var child in ref.childItems) {
        for (var feature in child.measuredFeatures) {
          final str = _findChildLine(feature);
          if (str != null && str.isNotEmpty) {
            arr.add(str);
          }
        }
        if (child.feature != null) {
          final str = _findChildLine(child.feature!);
          if (str != null && str.isNotEmpty) {
            arr.add(str);
          }
        }
      }
    }

    return arr;
  }

  ResultLine? _findChildLine(IMeasureItemFeature feature) {
    if (feature.value == null) return null;

    final value = feature.value!;
    final valueStr = _pickValueStr(value);

    final name = feature.refItem.description;

    return ResultLine(label: ' $idPlaceStr $name', value: valueStr);
  }

  List<ResultLine> _findFeatureLines(IMeasureItemFeature feature) {
    final count = feature.values.length;
    final itemName = _findMetaDisplayName(
        feature.refItem.meta, feature.featureStyle.showBriefAnnotation);
    if (count == 0) {
      return [ResultLine(label: '$idStr $itemName')];
    }

    List<ResultLine> arr = [];
    for (var i = 0; i < count; i++) {
      final val = feature.values[i];
      final meta = val.meta;
      final valueStr = _pickValueStr(val);

      if (i == 0) {
        arr.add(ResultLine(label: "$idStr $itemName", value: valueStr));
      } else {
        final name = _findOutputMetaDisplayName(
            meta, feature.featureStyle.showBriefAnnotation);
        arr.add(ResultLine(label: "$idPlaceStr $name", value: valueStr));
      }
    }
    return arr;
  }

  String _pickValueStr(ValueBase value) {
    if (value is FloatValue) {
      final floatVal = _roundDouble(value.value!, 6);
      if (floatVal.isNaN) {
        return '';
      }

      final unit = value.unit;
      final targetUnit = value.targetUnit;
      final targetVal = UnitValueConverter.convert(unit, targetUnit, floatVal);
      final targetValRound =
          _roundDouble(targetVal, value.meta.fractionalDigits);
      final unitStr = UnitDescriptionMap.getDesc(targetUnit);
      return '$targetValRound $unitStr';
    } else if (value is StringValue) {
      return value.value!;
    }
    return '';
  }

  String _findMetaDisplayName(ItemMeta meta,
      [bool showBriefAnnotation = false]) {
    if (showBriefAnnotation) {
      if (meta.briefAnnotation.isNotEmpty) {
        return meta.briefAnnotation;
      }
    }
    return meta.description;
  }

  String _findOutputMetaDisplayName(ItemOutputMeta meta,
      [bool showBriefAnnotation = false]) {
    if (showBriefAnnotation) {
      if (meta.briefAnnotation != null && meta.briefAnnotation!.isNotEmpty) {
        return meta.briefAnnotation!;
      }
    }
    return meta.description;
  }

  double _roundDouble(double value, [int digits = 2]) {
    final digitsStr = value.toStringAsFixed(digits);
    final result = double.parse(digitsStr);
    return result;
  }
}