import 'package:flutter/material.dart';

class DayHeader extends StatelessWidget {
  const DayHeader({
    super.key,
    required this.date,
    required this.totalDuration,
  });

  final DateTime date;
  final Duration totalDuration;

  @override
  Widget build(BuildContext context) {
    final colorScheme = Theme.of(context).colorScheme;
    return Padding(
      padding: const EdgeInsets.fromLTRB(16, 16, 16, 4),
      child: Row(
        children: [
          Text(
            _label(date),
            style: Theme.of(context).textTheme.labelLarge?.copyWith(
                  color: colorScheme.primary,
                  fontWeight: FontWeight.bold,
                ),
          ),
          const Spacer(),
          Text(
            _fmt(totalDuration),
            style: Theme.of(context).textTheme.labelMedium?.copyWith(
                  color: colorScheme.onSurfaceVariant,
                ),
          ),
        ],
      ),
    );
  }

  String _label(DateTime d) {
    final now = DateTime.now();
    final today = DateTime(now.year, now.month, now.day);
    final yesterday = today.subtract(const Duration(days: 1));
    final target = DateTime(d.year, d.month, d.day);

    if (target == today) return 'Today';
    if (target == yesterday) return 'Yesterday';

    const weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                    'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    return '${weekdays[d.weekday - 1]}, ${d.day} ${months[d.month - 1]}';
  }

  String _fmt(Duration d) {
    final h = d.inHours;
    final m = d.inMinutes % 60;
    if (h > 0) return '${h}h ${m}m';
    return '${m}m';
  }
}