import 'package:flutter/material.dart';
import 'package:mileograph_flutter/services/data_service.dart';

import 'package:provider/provider.dart';

class TopTractionPanel extends StatelessWidget {
  const TopTractionPanel({super.key});

  @override
  Widget build(BuildContext context) {
    final data = context.watch<DataService>();
    final stats = data.homepageStats;
    final locos = stats?.topLocos ?? [];
    final textTheme = Theme.of(context).textTheme;
    if (data.isHomepageLoading && locos.isEmpty) {
      return const Padding(
        padding: EdgeInsets.all(16.0),
        child: Center(child: CircularProgressIndicator()),
      );
    }
    return Card(
      clipBehavior: Clip.antiAlias,
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Row(
              children: [
                const Icon(Icons.train, size: 20),
                const SizedBox(width: 8),
                Expanded(
                  child: Text(
                    "Top traction",
                    style: textTheme.titleMedium?.copyWith(
                      fontWeight: FontWeight.w800,
                    ),
                  ),
                ),
              ],
            ),
            const SizedBox(height: 8),
            if (locos.isEmpty)
              const Padding(
                padding: EdgeInsets.all(8.0),
                child: Text('No traction data yet'),
              )
            else
              Column(
                children: [
                  for (int index = 0; index < locos.length; index++) ...[
                    ListTile(
                      contentPadding: EdgeInsets.zero,
                      dense: true,
                      leading: CircleAvatar(
                        radius: 18,
                        backgroundColor:
                            Theme.of(context).colorScheme.primaryContainer,
                        child: Text(
                          '${index + 1}',
                          style: textTheme.labelLarge?.copyWith(
                            fontWeight: FontWeight.w800,
                          ),
                        ),
                      ),
                      title: Text(
                        '${locos[index].locoClass} ${locos[index].number}',
                        style: textTheme.titleSmall?.copyWith(
                          fontWeight: FontWeight.w700,
                        ),
                      ),
                      subtitle: (locos[index].name ?? '').isEmpty
                          ? null
                          : Text(
                              locos[index].name ?? '',
                              style: textTheme.bodySmall?.copyWith(
                                fontStyle: FontStyle.italic,
                              ),
                            ),
                      trailing: Text(
                        '${locos[index].mileage?.toStringAsFixed(1)} mi',
                        style: textTheme.labelLarge?.copyWith(
                          fontWeight: FontWeight.w700,
                        ),
                      ),
                    ),
                    if (index != locos.length - 1) const Divider(height: 12),
                  ],
                ],
              ),
          ],
        ),
      ),
    );
  }
}