79 lines
2.5 KiB
Dart
79 lines
2.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'package:intl/intl.dart';
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/// Provides extra functionality for formatting the time.
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extension DateTimeExtension on DateTime {
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bool operator <(DateTime other) {
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return millisecondsSinceEpoch < other.millisecondsSinceEpoch;
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}
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bool operator >(DateTime other) {
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return millisecondsSinceEpoch > other.millisecondsSinceEpoch;
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}
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bool operator >=(DateTime other) {
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return millisecondsSinceEpoch >= other.millisecondsSinceEpoch;
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}
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bool operator <=(DateTime other) {
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return millisecondsSinceEpoch <= other.millisecondsSinceEpoch;
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}
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/// Checks if two DateTimes are close enough to belong to the same
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/// environment.
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bool sameEnvironment(DateTime prevTime) =>
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difference(prevTime) < const Duration(hours: 1);
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/// Returns a simple time String.
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String localizedTimeOfDay(BuildContext context) =>
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L10n.of(context).alwaysUse24HourFormat == 'true'
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? DateFormat('HH:mm', L10n.of(context).localeName).format(this)
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: DateFormat('h:mm a', L10n.of(context).localeName).format(this);
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/// Returns [localizedTimeOfDay()] if the ChatTime is today, the name of the week
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/// day if the ChatTime is this week and a date string else.
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String localizedTimeShort(BuildContext context) {
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final now = DateTime.now();
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final sameYear = now.year == year;
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final sameDay = sameYear && now.month == month && now.day == day;
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final sameWeek = sameYear &&
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!sameDay &&
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now.millisecondsSinceEpoch - millisecondsSinceEpoch <
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1000 * 60 * 60 * 24 * 7;
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if (sameDay) {
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return localizedTimeOfDay(context);
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} else if (sameWeek) {
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return DateFormat.E(Localizations.localeOf(context).languageCode)
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.format(this);
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} else if (sameYear) {
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return DateFormat.MMMd(Localizations.localeOf(context).languageCode)
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.format(this);
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}
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return DateFormat.yMMMd(Localizations.localeOf(context).languageCode)
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.format(this);
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}
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/// If the DateTime is today, this returns [localizedTimeOfDay()], if not it also
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/// shows the date.
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/// TODO: Add localization
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String localizedTime(BuildContext context) {
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final now = DateTime.now();
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final sameYear = now.year == year;
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final sameDay = sameYear && now.month == month && now.day == day;
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if (sameDay) return localizedTimeOfDay(context);
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return L10n.of(context).dateAndTimeOfDay(
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localizedTimeShort(context),
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localizedTimeOfDay(context),
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);
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}
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}
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