flutter_traccar_api 0.1.0

flutter_traccar_api: ^0.1.0 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_traccar_api/flutter_traccar_api.dart';
import 'realtime_dashboard.dart';

void main() {
  runApp(const TraccarApiExampleApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Traccar API Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        useMaterial3: true,
      ),
      home: const LoginScreen(),
    );
  }
}

class LoginScreen extends StatefulWidget {
  const LoginScreen({super.key});

  @override
  State<LoginScreen> createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
  final _formKey = GlobalKey<FormState>();
  final _usernameController = TextEditingController();
  final _passwordController = TextEditingController();
  final _serverUrlController = TextEditingController(text: 'https://demo.traccar.org');
  final _api = FlutterTraccarApi();
  bool _isLoading = false;

  @override
  void initState() {
    super.initState();
    _initializeApi();
  }

  Future<void> _initializeApi() async {
    await _api.initialize();
    
    // Check for cached credentials
    if (await _api.hasCachedCredentials()) {
      final success = await _api.refreshAuth();
      if (success && mounted) {
        Navigator.of(context).pushReplacement(
          MaterialPageRoute(builder: (context) => const DashboardScreen()),
        );
      }
    }
  }

  Future<void> _login() async {
    if (!_formKey.currentState!.validate()) return;

    setState(() => _isLoading = true);

    try {
      final success = await _api.login(
        username: _usernameController.text,
        password: _passwordController.text,
        serverUrl: _serverUrlController.text,
      );

      if (success && mounted) {
        Navigator.of(context).pushReplacement(
          MaterialPageRoute(builder: (context) => const DashboardScreen()),
        );
      } else {
        _showError('Login failed. Please check your credentials.');
      }
    } catch (e) {
      _showError('Error: $e');
    } finally {
      setState(() => _isLoading = false);
    }
  }

  void _showError(String message) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text(message), backgroundColor: Colors.red),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Traccar API Login'),
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Icon(Icons.location_on, size: 80, color: Colors.blue),
              const SizedBox(height: 32),
              TextFormField(
                controller: _serverUrlController,
                decoration: const InputDecoration(
                  labelText: 'Server URL',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.cloud),
                ),
                validator: (value) => value?.isEmpty == true ? 'Required' : null,
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _usernameController,
                decoration: const InputDecoration(
                  labelText: 'Username',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.person),
                ),
                validator: (value) => value?.isEmpty == true ? 'Required' : null,
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _passwordController,
                decoration: const InputDecoration(
                  labelText: 'Password',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.lock),
                ),
                obscureText: true,
                validator: (value) => value?.isEmpty == true ? 'Required' : null,
              ),
              const SizedBox(height: 24),
              SizedBox(
                width: double.infinity,
                child: ElevatedButton(
                  onPressed: _isLoading ? null : _login,
                  child: _isLoading
                      ? const CircularProgressIndicator()
                      : const Text('Login'),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  @override
  void dispose() {
    _usernameController.dispose();
    _passwordController.dispose();
    _serverUrlController.dispose();
    super.dispose();
  }
}

class DashboardScreen extends StatefulWidget {
  const DashboardScreen({super.key});

  @override
  State<DashboardScreen> createState() => _DashboardScreenState();
}

class _DashboardScreenState extends State<DashboardScreen> {
  final _api = FlutterTraccarApi();
  List<Device> _devices = [];
  bool _isLoading = true;

  @override
  void initState() {
    super.initState();
    _loadDevices();
  }

  Future<void> _loadDevices() async {
    try {
      final devices = await _api.getDevices();
      if (mounted) {
        setState(() {
          _devices = devices;
          _isLoading = false;
        });
      }
    } catch (e) {
      if (mounted) {
        setState(() => _isLoading = false);
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('Error loading devices: $e')),
        );
      }
    }
  }

  Future<void> _logout() async {
    await _api.logout();
    if (mounted) {
      Navigator.of(context).pushReplacement(
        MaterialPageRoute(builder: (context) => const LoginScreen()),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dashboard - ${_api.currentUsername ?? 'User'}'),
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        actions: [
          IconButton(
            icon: const Icon(Icons.timeline),
            onPressed: () {
              Navigator.of(context).push(
                MaterialPageRoute(
                  builder: (context) => RealtimeDashboard(api: _api),
                ),
              );
            },
            tooltip: 'Real-time Dashboard',
          ),
          IconButton(
            icon: const Icon(Icons.logout),
            onPressed: _logout,
          ),
        ],
      ),
      body: _isLoading
          ? const Center(child: CircularProgressIndicator())
          : _devices.isEmpty
              ? const Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Icon(Icons.devices, size: 64, color: Colors.grey),
                      SizedBox(height: 16),
                      Text('No devices found'),
                    ],
                  ),
                )
              : ListView.builder(
                  itemCount: _devices.length,
                  itemBuilder: (context, index) {
                    final device = _devices[index];
                    return Card(
                      margin: const EdgeInsets.all(8.0),
                      child: ListTile(
                        leading: CircleAvatar(
                          backgroundColor: device.status == 'online'
                              ? Colors.green
                              : Colors.grey,
                          child: const Icon(Icons.device_hub, color: Colors.white),
                        ),
                        title: Text(device.name ?? 'Unknown Device'),
                         subtitle: Column(
                           crossAxisAlignment: CrossAxisAlignment.start,
                           children: [
                             Text('Status: ${device.status ?? 'Unknown'}'),
                             if (device.lastUpdate != null)
                               Text('Last Update: ${device.lastUpdate}'),
                           ],
                         ),
                        trailing: const Icon(Icons.arrow_forward_ios),
                        onTap: () {
                          // Navigate to device details
                          Navigator.of(context).push(
                            MaterialPageRoute(
                              builder: (context) => DeviceDetailScreen(device: device),
                            ),
                          );
                        },
                      ),
                    );
                  },
                ),
      floatingActionButton: FloatingActionButton(
        onPressed: _loadDevices,
        child: const Icon(Icons.refresh),
      ),
    );
  }
}

class DeviceDetailScreen extends StatelessWidget {
  final Device device;

  const DeviceDetailScreen({super.key, required this.device});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
         title: Text(device.name ?? 'Unknown Device'),
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
       ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Device Information',
                      style: Theme.of(context).textTheme.headlineSmall,
                    ),
                    const SizedBox(height: 16),
                    _buildInfoRow('Name', device.name ?? 'Unknown'),
                     _buildInfoRow('Status', device.status ?? 'Unknown'),
                     _buildInfoRow('Unique ID', device.uniqueId ?? 'Unknown'),
                    if (device.lastUpdate != null)
                      _buildInfoRow('Last Update', device.lastUpdate.toString()),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildInfoRow(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4.0),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          SizedBox(
            width: 100,
            child: Text(
              '$label:',
              style: const TextStyle(fontWeight: FontWeight.bold),
            ),
          ),
          Expanded(child: Text(value)),
        ],
      ),
    );
  }
}