getRemainSubDuration method
Implementation
Duration getRemainSubDuration(String? time, String id) {
DateTime currentTime = DateTime.now();
DateTime purchaseDate = DateTime.fromMillisecondsSinceEpoch(
int.parse(time ?? "0"),
).add(
Duration(
days: int.tryParse(id.split("_days_")[0]) ?? 0,
),
);
print(currentTime.toString());
print(purchaseDate.toString());
print(currentTime.difference(purchaseDate));
print(purchaseDate.difference(currentTime));
return purchaseDate.difference(currentTime);
}