formatNumber function

String formatNumber(num? value, { required FormatType formatType, DecimalType? decimalType, String? currency, bool toLowerCase = false, String? format, String? locale, })

Implementation

String formatNumber(
  num? value, {
  required FormatType formatType,
  DecimalType? decimalType,
  String? currency,
  bool toLowerCase = false,
  String? format,
  String? locale,
}) {
  if (value == null) {
    return '';
  }
  var formattedValue = '';
  switch (formatType) {
    case FormatType.decimal:
      switch (decimalType!) {
        case DecimalType.automatic:
          formattedValue = NumberFormat.decimalPattern().format(value);
          break;
        case DecimalType.periodDecimal:
          formattedValue = NumberFormat.decimalPattern('en_US').format(value);
          break;
        case DecimalType.commaDecimal:
          formattedValue = NumberFormat.decimalPattern('es_PA').format(value);
          break;
      }
      break;
    case FormatType.percent:
      formattedValue = NumberFormat.percentPattern().format(value);
      break;
    case FormatType.scientific:
      formattedValue = NumberFormat.scientificPattern().format(value);
      if (toLowerCase) {
        formattedValue = formattedValue.toLowerCase();
      }
      break;
    case FormatType.compact:
      formattedValue = NumberFormat.compact().format(value);
      break;
    case FormatType.compactLong:
      formattedValue = NumberFormat.compactLong().format(value);
      break;
    case FormatType.custom:
      final hasLocale = locale != null && locale.isNotEmpty;
      formattedValue =
          NumberFormat(format, hasLocale ? locale : null).format(value);
  }

  if (formattedValue.isEmpty) {
    return value.toString();
  }

  if (currency != null) {
    final currencySymbol = currency.isNotEmpty
        ? currency
        : NumberFormat.simpleCurrency().format(0.0).substring(0, 1);
    formattedValue = '$currencySymbol$formattedValue';
  }

  return formattedValue;
}