getExampleShortNumberForCost method

@visibleForTesting String getExampleShortNumberForCost(String regionCode, ShortNumberCost cost)

Gets a valid short number for the specified cost category.

regionCode the region for which an example short number is needed cost the cost category of number that is needed returns a valid short number for the specified region and cost category. Returns an empty string when the metadata does not contain such information, or the cost is ShortNumberCost.unknownCost.

Implementation

@visibleForTesting
String getExampleShortNumberForCost(String regionCode, ShortNumberCost cost) {
  PhoneMetadata? phoneMetadata = _getShortNumberMetadataForRegion(regionCode);
  if (phoneMetadata == null) {
    return "";
  }
  PhoneNumberDesc? desc;
  switch (cost) {
    case ShortNumberCost.tollFree:
      desc = phoneMetadata.tollFree;
      break;
    case ShortNumberCost.standardRate:
      desc = phoneMetadata.standardRate;
      break;
    case ShortNumberCost.premiumRate:
      desc = phoneMetadata.premiumRate;
      break;
    default:
    // UNKNOWN_COST numbers are computed by the process of elimination from the other cost
    // categories.
  }
  if (desc != null && desc.hasExampleNumber()) {
    return desc.exampleNumber;
  }
  return "";
}