import 'package:flutter/material.dart';
import '/data/models/contact_model.dart';

class ContactTile extends StatelessWidget {
  final Contact contact;
  final VoidCallback? onTap;

  const ContactTile({super.key, required this.contact, this.onTap});

  String get displayName {
    final full = '${contact.name != 'Unknown' ? contact.name : ''} ${contact.surname != 'Unknown' ? contact.surname : ''}'.trim();
    if (full.isNotEmpty) return full;
    if ((contact.username != 'Unknown' ? contact.username : '').isNotEmpty) return contact.username!;
    return 'User';
  }

  @override
  Widget build(BuildContext context) {
    final primary = Theme.of(context).colorScheme.primary;

    final username = contact.username;
    final initials = (displayName.isNotEmpty ? displayName : (username != 'Unknown' ? username : 'U'))
        .trim()
        .split(RegExp(r'\s+'))
        .where((p) => p.isNotEmpty)
        .take(2)
        .map((p) => p[0].toUpperCase())
        .join();

    return ListTile(
      onTap: onTap,
      contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      leading: CircleAvatar(
        radius: 28,
        backgroundColor: primary.withAlpha((0.1 * 255).round()),
        child: Text(
          initials,
          style: TextStyle(
            color: Theme.of(context).colorScheme.primary,
            fontWeight: FontWeight.bold,
          ),
        ),
      ),
      title: Text(
        contact.name,
        style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
      ),
      subtitle: Text(
        contact.lastMessage ?? "Нет сообщений",
        maxLines: 1,
        overflow: TextOverflow.ellipsis,
        style: const TextStyle(color: Colors.grey),
      ),
      trailing: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.end,
        children: [
          Text(
            _formatTime(contact.lastMessageTime),
            style: const TextStyle(
              color: Colors.grey,
              fontSize: 12,
            ),
          ),
          const SizedBox(height: 4),
          if (contact.unreadCount > 0)
            Container(
              padding: const EdgeInsets.all(6),
              decoration: BoxDecoration(
                color: primary.withAlpha((0.5 * 255).round()),
                shape: BoxShape.circle,
              ),
              child: Text(
                '${contact.unreadCount}',
                style: const TextStyle(color: Colors.white, fontSize: 10),
              ),
            ),
        ],
      ),
    );
  }

  String _formatTime(DateTime? time) {
    if (time == null) return "";
    return "${time.hour}:${time.minute.toString().padLeft(2, '0')}";
  }
}