import 'dart:developer';

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/interfaces/process/items/terms.dart';
import 'package:fis_measure/interfaces/process/items/types.dart';
import 'package:fis_measure/process/unit/convert/convert.dart';
import 'package:fis_measure/process/workspace/measure_data_controller.dart';
import 'package:fis_measure/values/unit_desc.dart';
import 'package:fis_measure/view/result/results_panel.dart';
import 'package:get/get.dart';
import 'package:vid/us/vid_us_unit.dart';

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

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

  String kidIdPlaceStr = ' ';
  String kidIdStr = ' ';
  bool _isCurrURM = false;

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

    _isCurrURM = feature.refItem.meta.name.contains("URM");

    final List<ResultLine> arr = [];
    List<ResultLine> mainLines = [];

    if ([
      MeasureTypes.URMShellDenMeasure,
      MeasureTypes.URMShellVelMeasure,
      MeasureTypes.URMShellDenVelMeasure
    ].contains(feature.refItem.meta.measureType)) {
      mainLines = _findSpecialRimFeatureLines(feature);
    } else {
      mainLines = _findFeatureLines(feature);
    }

    arr.addAll(mainLines);

    final ref = feature.refItem;
    if (ref is ITopMeasureItem && ref.canChildOutputSelf) {
      _buildChildOutputs(arr, ref.childItems);
    }

    return arr;
  }

  void _buildChildOutputs(List<ResultLine> arr, List<IMeasureItem> childItems) {
    for (var i = 0; i < childItems.length; i++) {
      kidIdPlaceStr = '   '.padRight(2, ' ');
      kidIdStr = "  ${i + 1}".padRight(2, ' ');

      final child = childItems[i];
      for (final feature in child.measuredFeatures) {
        arr.addAll(_pickFeatureLines(feature));
      }
      if (child.feature != null) {
        arr.addAll(_pickFeatureLines(child.feature!));
      }
    }
  }

  List<ResultLine> _pickFeatureLines(IMeasureItemFeature feature) {
    final lines = _findKidFeatureLines(feature);
    return lines;
  }

  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> _findKidFeatureLines(IMeasureItemFeature feature) {
    final count = feature.values.length;
    final itemName = _findMetaDisplayName(feature.refItem.meta, true);
    if (count == 0) {
      return [];
    }

    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: "$kidIdStr $itemName", value: valueStr));
      } else {
        final name = _findOutputMetaDisplayName(
            meta, feature.featureStyle.showBriefAnnotation);
        arr.add(ResultLine(label: "$kidIdPlaceStr $name", value: valueStr));
      }
    }
    return arr;
  }

  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;
  }

  List<ResultLine> _findSpecialRimFeatureLines(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 $itemName", value: valueStr));
      } else {
        if (meta.description == MeasureTerms.Area) {
          final name = _findOutputMetaDisplayName(
              meta, feature.featureStyle.showBriefAnnotation);
          arr.add(ResultLine(label: "$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 = getUnitFromConfig(value.metaUnit);
      final targetVal =
          UnitValueConverter.convert(unit, value.metaUnit, floatVal);
      final targetValRound =
          _roundDoubleToString(targetVal, value.meta.fractionalDigits);
      final unitStr = UnitDescriptionMap.getDesc(value.metaUnit);
      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;
  }

  String _roundDoubleToString(double value, [int digits = 2]) {
    final digitsStr = value.toStringAsFixed(digits);
    return digitsStr;
  }

  VidUsUnit getUnitFromConfig(VidUsUnit unit) {
    try {
      final measureData = Get.find<MeasureDataController>();
      if (distanceUnits.contains(unit)) {
        if (_isCurrURM) {
          return VidUsUnitMap.getUnit(
              measureData.measureSystemSetting.uRMDistanceUnit.index);
        } else {
          return VidUsUnitMap.getUnit(
              measureData.measureSystemSetting.distanceUnit.index);
        }
      }
      if (areaUnits.contains(unit)) {
        return VidUsUnitMap.getUnit(
            measureData.measureSystemSetting.areaUnit.index);
      }
      if (velocityUnits.contains(unit)) {
        return VidUsUnitMap.getUnit(
            measureData.measureSystemSetting.velocityUnit.index);
      }
      if (timeUnits.contains(unit)) {
        return VidUsUnitMap.getUnit(
            measureData.measureSystemSetting.timeUnit.index);
      }
      return unit;
    } catch (e) {
      log('getUnitFromConfig error: $e');
      return unit;
    }
  }

  static final List<VidUsUnit> distanceUnits = [
    VidUsUnit.mm,
    VidUsUnit.cm,
    VidUsUnit.um,
    VidUsUnit.inch,
    VidUsUnit.ft,
  ];

  static final List<VidUsUnit> areaUnits = [
    VidUsUnit.mm2,
    VidUsUnit.cm2,
    VidUsUnit.m2,
  ];

  static final List<VidUsUnit> velocityUnits = [
    VidUsUnit.mms,
    VidUsUnit.cms,
    VidUsUnit.ms,
  ];

  static final List<VidUsUnit> timeUnits = [
    VidUsUnit.msec,
    VidUsUnit.s,
    VidUsUnit.hour,
    VidUsUnit.minute,
  ];

  static final List<VidUsUnit> volumeUnits = [
    VidUsUnit.cm3,
    VidUsUnit.ml,
    VidUsUnit.mm3,
    VidUsUnit.L,
  ];

  static final List<VidUsUnit> weightUnits = [
    VidUsUnit.kg,
    VidUsUnit.g,
    VidUsUnit.mg,
  ];

  static final List<VidUsUnit> pressureUnits = [
    VidUsUnit.cm3s,
    VidUsUnit.mls,
    VidUsUnit.mlmin,
    VidUsUnit.Lmin,
  ];
}