isImage method

bool isImage()

Implementation

bool isImage() {
  RegExp pattern = RegExp(r'IMG-\d\d\d\d\d\d\d\d-WA\d\d\d\d\d?\d?[.]jpg');
  if (dateTime != null && msg != null) {
    String dateTimeString = dateTime!.year.toString() +
        FixDateUtilities.fixMonthOrDayTo01(dateTime!.month.toString()) +
        FixDateUtilities.fixMonthOrDayTo01(dateTime!.day.toString());
    return msg!.startsWith("IMG-$dateTimeString-WA") &&
        msg!.startsWith(pattern);
  } else if (msg != null) {
    return msg!.startsWith(pattern);
  }
  return false;
}