Initial commit: Krow Worker App

lib/core/formatters.dart

@@ -0,0 +1,51 @@
+import 'package:intl/intl.dart';
+
+final _money = NumberFormat.currency(locale: 'en_US', symbol: r'$');
+final _time = DateFormat('h:mm a');
+final _dayFull = DateFormat('EEEE d MMMM');
+final _dayShort = DateFormat('EEE, d MMM yyyy');
+final _monthYear = DateFormat('MMMM yyyy');
+
+abstract final class Fmt {
+  static String money(num v) => _money.format(v);
+
+  static String time(DateTime d) => _time.format(d);
+
+  static String window(DateTime start, DateTime end) =>
+      '${_time.format(start)} - ${_time.format(end)}';
+
+  static String dayFull(DateTime d) => _dayFull.format(d);
+
+  static String dayShort(DateTime d) => _dayShort.format(d);
+
+  static String monthYear(DateTime d) => _monthYear.format(d);
+
+  /// `5h 48m`, the form used on every hours figure.
+  static String duration(Duration d) {
+    final h = d.inHours;
+    final m = d.inMinutes.remainder(60);
+    if (h == 0) return '${m}m';
+    return '${h}h ${m.toString().padLeft(2, '0')}m';
+  }
+
+  /// `05:48:12`, for the running clock-in timer.
+  static String stopwatch(Duration d) {
+    final h = d.inHours.toString().padLeft(2, '0');
+    final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
+    final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
+    return '$h:$m:$s';
+  }
+
+  /// A human countdown to a shift start: `in 41 min`, `in 3 hr`, `tomorrow`.
+  static String untilStart(DateTime start, {DateTime? now}) {
+    final from = now ?? DateTime.now();
+    final diff = start.difference(from);
+    if (diff.isNegative) return 'Started';
+    if (diff.inMinutes < 60) return 'In ${diff.inMinutes} min';
+    if (diff.inHours < 24) return 'In ${diff.inHours} hr';
+    return 'In ${diff.inDays} d';
+  }
+
+  static bool sameDay(DateTime a, DateTime b) =>
+      a.year == b.year && a.month == b.month && a.day == b.day;
+}