mirror of
https://github.com/krille-chan/fluffychat
synced 2024-09-10 10:25:11 +00:00
96 lines
3 KiB
Dart
96 lines
3 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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/// Two message events can belong to the same environment. That means that they
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/// don't need to display the time they were sent because they are close
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/// enaugh.
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static const minutesBetweenEnvironments = 10;
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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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return millisecondsSinceEpoch - prevTime.millisecondsSinceEpoch <
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1000 * 60 * minutesBetweenEnvironments;
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}
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/// Returns a simple time String.
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/// TODO: Add localization
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String localizedTimeOfDay(BuildContext context) {
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if (MediaQuery.of(context).alwaysUse24HourFormat) {
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return '${_z(hour)}:${_z(minute)}';
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} else {
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return '${_z(hour % 12 == 0 ? 12 : hour % 12)}:${_z(minute)} ${hour > 11 ? "pm" : "am"}';
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}
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}
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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.EEEE(Localizations.localeOf(context).languageCode)
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.format(this);
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} else if (sameYear) {
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return L10n.of(context)!.dateWithoutYear(
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month.toString().padLeft(2, '0'),
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day.toString().padLeft(2, '0'),
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);
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}
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return L10n.of(context)!.dateWithYear(
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year.toString(),
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month.toString().padLeft(2, '0'),
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day.toString().padLeft(2, '0'),
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);
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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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static String _z(int i) => i < 10 ? '0${i.toString()}' : i.toString();
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}
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