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

class NetworkDemoWidget extends StatefulWidget {
  final NetworkGroupService networkService;
  
  const NetworkDemoWidget({
    super.key,
    required this.networkService,
  });

  @override
  State<NetworkDemoWidget> createState() => _NetworkDemoWidgetState();
}

class _NetworkDemoWidgetState extends State<NetworkDemoWidget> {
  bool _isDemoMode = false;
  
  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.only(bottom: 16),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: const Color(0xFF2D2D2D),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: const Color(0xFF6366F1), width: 1),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              const Icon(
                Icons.developer_mode,
                color: Color(0xFF6366F1),
                size: 20,
              ),
              const SizedBox(width: 8),
              const Text(
                'Demo Mode',
                style: TextStyle(
                  color: Color(0xFF6366F1),
                  fontWeight: FontWeight.bold,
                  fontSize: 14,
                ),
              ),
              const Spacer(),
              Switch(
                value: _isDemoMode,
                onChanged: (value) {
                  setState(() {
                    _isDemoMode = value;
                  });
                  _toggleDemoMode(value);
                },
                activeColor: const Color(0xFF6366F1),
              ),
            ],
          ),
          if (_isDemoMode) ...[
            const SizedBox(height: 12),
            const Text(
              'Demo mode simulates network connectivity and adds sample users for testing.',
              style: TextStyle(
                color: Colors.grey,
                fontSize: 12,
              ),
            ),
            const SizedBox(height: 12),
            Row(
              children: [
                Expanded(
                  child: ElevatedButton(
                    onPressed: _addDemoUser,
                    style: ElevatedButton.styleFrom(
                      backgroundColor: const Color(0xFF6366F1).withOpacity(0.2),
                      foregroundColor: const Color(0xFF6366F1),
                      elevation: 0,
                    ),
                    child: const Text('Add Demo User'),
                  ),
                ),
                const SizedBox(width: 8),
                Expanded(
                  child: ElevatedButton(
                    onPressed: _simulateVote,
                    style: ElevatedButton.styleFrom(
                      backgroundColor: const Color(0xFF22C55E).withOpacity(0.2),
                      foregroundColor: const Color(0xFF22C55E),
                      elevation: 0,
                    ),
                    child: const Text('Simulate Vote'),
                  ),
                ),
              ],
            ),
          ],
        ],
      ),
    );
  }
  
  void _toggleDemoMode(bool enabled) {
    if (enabled) {
      // Simulate network connection
      widget.networkService.simulateNetworkConnection();
      _addInitialDemoUsers();
    } else {
      // Clear demo users
      widget.networkService.clearDemoUsers();
    }
  }
  
  void _addInitialDemoUsers() {
    final demoUsers = [
      {'name': 'Alex M.', 'votes': 5},
      {'name': 'Sarah K.', 'votes': 3},
      {'name': 'Marco R.', 'votes': 7},
      {'name': 'Lisa F.', 'votes': 2},
    ];
    
    for (var user in demoUsers) {
      widget.networkService.addDemoUser(user['name'] as String, user['votes'] as int);
    }
  }
  
  void _addDemoUser() {
    final names = ['Tom B.', 'Emma W.', 'David L.', 'Anna K.', 'Mike R.', 'Julia S.'];
    final randomName = names[DateTime.now().millisecond % names.length];
    final randomVotes = (DateTime.now().millisecond % 10) + 1;
    
    widget.networkService.addDemoUser(randomName, randomVotes);
  }
  
  void _simulateVote() {
    widget.networkService.updateUserVotes(widget.networkService.currentUser.votes + 1);
  }
}