cofounderella/lib/helper.dart

import 'package:collection/collection.dart';

///
/// Compare two lists by their content ignoring their elements order.
///
bool equalContent(List<dynamic> list1, List<dynamic> list2) {
  return const DeepCollectionEquality.unordered().equals(list1, list2);
}

///
/// Convert decimal coordinate to degrees minutes seconds (DMS).
///
String convertDecimalToDMS(double decimalValue) {
  bool isNegative = decimalValue < 0;
  double absoluteValue = decimalValue.abs();

  int degrees = absoluteValue.toInt();
  double minutesDecimal = (absoluteValue - degrees) * 60;
  int minutes = minutesDecimal.toInt();
  double secondsDecimal = (minutesDecimal - minutes) * 60;
  double seconds = double.parse(secondsDecimal.toStringAsFixed(2));

  String direction = isNegative
      ? (decimalValue < 0 ? 'W' : 'S')
      : (decimalValue >= 0 ? (degrees != 0 ? 'N' : 'E') : '');

  // return formatted string
  return '${degrees.abs()}° ${minutes.abs()}\' ${seconds.abs()}" $direction';
}