TetraStats/lib/utils/relative_timestamps.dart

59 lines
2.4 KiB
Dart

import 'package:tetra_stats/utils/numers_formats.dart';
/// Returns string, that represents time difference between [dateTime] and now
String relativeDateTime(DateTime dateTime){
Duration difference = dateTime.difference(DateTime.now());
bool inPast = difference.isNegative;
Duration absDifference = difference.abs();
double timeInterval;
// years
timeInterval = absDifference.inSeconds / 31536000;
if (timeInterval >= 100.0) {
return inPast ? "${timeInterval.truncate()} years ago" : "in ${timeInterval.truncate()} years";
} else if (timeInterval >= 10.0) {
return inPast ? "${f1.format(timeInterval)} years ago" : "in ${f1.format(timeInterval)} years";
} else if (timeInterval >= 1.0) {
return inPast ? "${f2.format(timeInterval)} years ago" : "in ${f2.format(timeInterval)} years";
}
// months
timeInterval = absDifference.inSeconds / 2592000;
if (timeInterval >= 10.0) {
return inPast ? "${timeInterval.truncate()} months ago" : "in ${timeInterval.truncate()} months";
} else if (timeInterval >= 1.0) {
return inPast ? "${f1.format(timeInterval)} months ago" : "in ${f1.format(timeInterval)} months";
}
// days
timeInterval = absDifference.inSeconds / 86400;
if (timeInterval >= 10.0) {
return inPast ? "${timeInterval.truncate()} days ago" : "in ${timeInterval.truncate()} days";
} else if (timeInterval >= 1.0) {
return inPast ? "${f1.format(timeInterval)} days ago" : "in ${f1.format(timeInterval)} days";
}
// hours
timeInterval = absDifference.inSeconds / 3600;
if (timeInterval >= 10.0) {
return inPast ? "${timeInterval.truncate()} hours ago" : "in ${timeInterval.truncate()} hours";
} else if (timeInterval >= 1.0) {
return inPast ? "${f1.format(timeInterval)} hours ago" : "in ${f1.format(timeInterval)} hours";
}
// minutes
timeInterval = absDifference.inSeconds / 60;
if (timeInterval >= 10.0) {
return inPast ? "${timeInterval.truncate()} minutes ago" : "in ${timeInterval.truncate()} minutes";
} else if (timeInterval >= 1.0) {
return inPast ? "${f1.format(timeInterval)} minutes ago" : "in ${f1.format(timeInterval)} minutes";
}
// seconds
timeInterval = absDifference.inMilliseconds / 1000;
if (timeInterval >= 10.0) {
return inPast ? "${timeInterval.truncate()} seconds ago" : "in ${timeInterval.truncate()} seconds";
} else {
return inPast ? "${f1.format(timeInterval)} seconds ago" : "in ${f1.format(timeInterval)} seconds";
}
}