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67 lines
2.2 KiB
Dart
67 lines
2.2 KiB
Dart
import 'package:flutter/foundation.dart';
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import 'package:intl/intl.dart';
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final _fullDateFormat = DateFormat('EEEE, MMMM d, y');
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/// Returns "Today", "Yesterday", or a full date like "Monday, March 31, 2026".
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///
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/// [now] is exposed for testing; production callers should omit it.
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String formatDayHeading(int unixSeconds, {@visibleForTesting DateTime? now}) {
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final date = DateTime.fromMillisecondsSinceEpoch(
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unixSeconds * 1000,
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isUtc: true,
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).toLocal();
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now ??= DateTime.now();
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final today = DateTime(now.year, now.month, now.day);
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final messageDay = DateTime(date.year, date.month, date.day);
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if (today.year == messageDay.year &&
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today.month == messageDay.month &&
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today.day == messageDay.day) {
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return 'Today';
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}
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final yesterday = DateTime(now.year, now.month, now.day - 1);
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if (yesterday.year == messageDay.year &&
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yesterday.month == messageDay.month &&
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yesterday.day == messageDay.day) {
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return 'Yesterday';
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}
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return _fullDateFormat.format(date);
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}
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/// Whether two unix-second timestamps fall on the same calendar day (local time).
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bool isSameDay(int a, int b) {
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final dtA = DateTime.fromMillisecondsSinceEpoch(
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a * 1000,
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isUtc: true,
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).toLocal();
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final dtB = DateTime.fromMillisecondsSinceEpoch(
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b * 1000,
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isUtc: true,
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).toLocal();
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return dtA.year == dtB.year && dtA.month == dtB.month && dtA.day == dtB.day;
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}
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/// Returns a compact relative time string like "just now", "5m ago", "3h ago",
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/// "2d ago", or a short date for older timestamps.
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String relativeTime(int unixSeconds) {
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final now = DateTime.now();
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final time = DateTime.fromMillisecondsSinceEpoch(
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unixSeconds * 1000,
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isUtc: true,
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).toLocal();
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final diff = now.difference(time);
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if (diff.inMinutes < 1) return 'just now';
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if (diff.inMinutes < 60) return '${diff.inMinutes}m ago';
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if (diff.inHours < 24) return '${diff.inHours}h ago';
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if (diff.inDays < 7) return '${diff.inDays}d ago';
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return '${time.month}/${time.day}/${time.year}';
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}
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/// Truncates a hex pubkey to the first 8 characters with an ellipsis.
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String shortPubkey(String pubkey) {
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if (pubkey.length > 12) return '${pubkey.substring(0, 8)}\u2026';
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return pubkey;
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}
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