import 'package:flutter/material.dart';
import '../services/ble_service.dart';

class StatisticsCard extends StatelessWidget {
  final BLEService ble;

  const StatisticsCard({super.key, required this.ble});

  @override
  Widget build(BuildContext context) {
    final duration = ble.streamingDuration;
    final durationStr = duration != null
        ? '${duration.inMinutes}:${(duration.inSeconds % 60).toString().padLeft(2, '0')}'
        : '0:00';

    return Card(
      margin: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            _StatItem(
              icon: Icons.data_usage,
              label: 'Packets',
              value: '${ble.packetCount}',
            ),
            _StatItem(
              icon: Icons.speed,
              label: 'Rate',
              value: '${ble.packetsPerSecond.toStringAsFixed(2)}/s',
            ),
            _StatItem(
              icon: Icons.timer,
              label: 'Duration',
              value: durationStr,
            ),
          ],
        ),
      ),
    );
  }
}

class _StatItem extends StatelessWidget {
  final IconData icon;
  final String label;
  final String value;

  const _StatItem({
    required this.icon,
    required this.label,
    required this.value,
  });

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: [
        Icon(icon, size: 24, color: Theme.of(context).primaryColor),
        const SizedBox(height: 4),
        Text(
          value,
          style: Theme.of(context).textTheme.titleMedium?.copyWith(
                fontWeight: FontWeight.bold,
              ),
        ),
        Text(
          label,
          style: Theme.of(context).textTheme.bodySmall,
        ),
      ],
    );
  }
}