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Fr4nz D13trich 2026-02-02 15:06:40 +01:00
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commit 9efa9bc6dd
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mobile/lib/extensions/datetime_extensions.dart Normal file
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import 'dart:ui';
import 'package:easy_localization/easy_localization.dart';
extension TimeAgoExtension on DateTime {
/// Displays the time difference of this [DateTime] object to the current time as a [String]
String timeAgo({bool numericDates = true}) {
DateTime date = toLocal();
final now = DateTime.now().toLocal();
final difference = now.difference(date);
if (difference.inSeconds < 5) {
return 'Just now';
} else if (difference.inSeconds < 60) {
return '${difference.inSeconds} seconds ago';
} else if (difference.inMinutes <= 1) {
return (numericDates) ? '1 minute ago' : 'A minute ago';
} else if (difference.inMinutes < 60) {
return '${difference.inMinutes} minutes ago';
} else if (difference.inHours <= 1) {
return (numericDates) ? '1 hour ago' : 'An hour ago';
} else if (difference.inHours < 60) {
return '${difference.inHours} hours ago';
} else if (difference.inDays <= 1) {
return (numericDates) ? '1 day ago' : 'Yesterday';
} else if (difference.inDays < 6) {
return '${difference.inDays} days ago';
} else if ((difference.inDays / 7).ceil() <= 1) {
return (numericDates) ? '1 week ago' : 'Last week';
} else if ((difference.inDays / 7).ceil() < 4) {
return '${(difference.inDays / 7).ceil()} weeks ago';
} else if ((difference.inDays / 30).ceil() <= 1) {
return (numericDates) ? '1 month ago' : 'Last month';
} else if ((difference.inDays / 30).ceil() < 30) {
return '${(difference.inDays / 30).ceil()} months ago';
} else if ((difference.inDays / 365).ceil() <= 1) {
return (numericDates) ? '1 year ago' : 'Last year';
}
return '${(difference.inDays / 365).floor()} years ago';
}
}
/// Extension to format date ranges according to UI requirements
extension DateRangeFormatting on DateTime {
/// Formats a date range according to specific rules:
/// - Single date of this year: "Aug 28"
/// - Single date of other year: "Aug 28, 2023"
/// - Date range of this year: "Mar 23-May 31"
/// - Date range of other year: "Aug 28 - Sep 30, 2023"
/// - Date range over multiple years: "Apr 17, 2021 - Apr 9, 2022"
static String formatDateRange(DateTime startDate, DateTime endDate, Locale? locale) {
final now = DateTime.now();
final currentYear = now.year;
final localeString = locale?.toString() ?? 'en_US';
// Check if it's a single date (same day)
if (startDate.year == endDate.year && startDate.month == endDate.month && startDate.day == endDate.day) {
if (startDate.year == currentYear) {
// Single date of this year: "Aug 28"
return DateFormat.MMMd(localeString).format(startDate);
} else {
// Single date of other year: "Aug 28, 2023"
return DateFormat.yMMMd(localeString).format(startDate);
}
}
// It's a date range
if (startDate.year == endDate.year) {
// Same year
if (startDate.year == currentYear) {
// Date range of this year: "Mar 23-May 31"
final startFormatted = DateFormat.MMMd(localeString).format(startDate);
final endFormatted = DateFormat.MMMd(localeString).format(endDate);
return '$startFormatted - $endFormatted';
} else {
// Date range of other year: "Aug 28 - Sep 30, 2023"
final startFormatted = DateFormat.MMMd(localeString).format(startDate);
final endFormatted = DateFormat.MMMd(localeString).format(endDate);
return '$startFormatted - $endFormatted, ${startDate.year}';
}
} else {
// Date range over multiple years: "Apr 17, 2021 - Apr 9, 2022"
final startFormatted = DateFormat.yMMMd(localeString).format(startDate);
final endFormatted = DateFormat.yMMMd(localeString).format(endDate);
return '$startFormatted - $endFormatted';
}
}
}