PanicButton_DART/lib/main.dart

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:geolocator/geolocator.dart';


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


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


  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Panic Button',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.red),
        useMaterial3: true,
      ),
      home: const PanicButtonPage(),
    );
  }
}


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


  @override
  State<PanicButtonPage> createState() => _PanicButtonPageState();
}


class _PanicButtonPageState extends State<PanicButtonPage> {
  bool _isLoading = false;
  String? _message;
  String _selectedAlertType = 'fire';
  String? _currentLocation;


  final List<Map<String, String>> alertTypes = [
    {'label': 'Fire', 'value': 'fire', 'icon': '🔥'},
    {'label': 'Earthquake', 'value': 'earthquake', 'icon': '🌍'},
    {'label': 'Flood', 'value': 'flood', 'icon': '💧'},
  ];


  Future<void> _getCurrentLocation() async {
    try {
      final position = await Geolocator.getCurrentPosition(
        desiredAccuracy: LocationAccuracy.high,
      );
      setState(() {
        _currentLocation = 'Lat: ${position.latitude.toStringAsFixed(6)}, Lng: ${position.longitude.toStringAsFixed(6)}';
      });
    } catch (e) {
      setState(() {
        _currentLocation = 'Location error: $e';
      });
    }
  }


  Future<void> _sendPanicAlert() async {
    setState(() {
      _isLoading = true;
      _message = null;
    });


    try {
      final url = Uri.parse('https://ntfy.ubharajaya.ac.id/panic-button');
      final alertMessage = 
        'PANIC ALERT - $_selectedAlertType detected! Emergency button pressed!\nLocation : $_currentLocation';
      final response = await http.post(
        url,
        body: alertMessage,
      ).timeout(const Duration(seconds: 10));


      if (response.statusCode == 200 || response.statusCode == 201) {
        setState(() {
          _message = 'Alert sent successfully!';
          _isLoading = false;
        });
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            content: Text('Panic alert sent!'),
            backgroundColor: Colors.green,
            duration: Duration(seconds: 2),
          ),
        );
      } else {
        setState(() {
          _message = 'Failed to send alert. Status: ${response.statusCode}';
          _isLoading = false;
        });
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text('Error: ${response.statusCode}'),
            backgroundColor: Colors.orange,
            duration: const Duration(seconds: 2),
          ),
        );
      }
    } catch (e) {
      setState(() {
        _message = 'Error: $e';
        _isLoading = false;
      });
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('Error: $e'),
          backgroundColor: Colors.red,
          duration: const Duration(seconds: 2),
        ),
      );
    }
  }


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


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Panic Button'),
        backgroundColor: Colors.red,
        centerTitle: true,
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            // Alert Type Selection
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 32.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text(
                    'Select Alert Type:',
                    style: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                  const SizedBox(height: 12),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: alertTypes.map((alert) {
                      final isSelected = _selectedAlertType == alert['value'];
                      return GestureDetector(
                        onTap: _isLoading ? null : () {
                          setState(() {
                            _selectedAlertType = alert['value']!;
                          });
                        },
                        child: Container(
                          padding: const EdgeInsets.all(12),
                          decoration: BoxDecoration(
                            border: Border.all(
                              color: isSelected ? Colors.red : Colors.grey,
                              width: isSelected ? 3 : 2,
                            ),
                            borderRadius: BorderRadius.circular(12),
                            color: isSelected ? Colors.red.shade50 : Colors.transparent,
                          ),
                          child: Column(
                            children: [
                              Text(
                                alert['icon']!,
                                style: const TextStyle(fontSize: 28),
                              ),
                              const SizedBox(height: 4),
                              Text(
                                alert['label']!,
                                style: TextStyle(
                                  fontSize: 12,
                                  fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
                                  color: isSelected ? Colors.red : Colors.black,
                                ),
                              ),
                            ],
                          ),
                        ),
                      );
                    }).toList(),
                  ),
                ],
              ),
            ),
            const SizedBox(height: 50),
            // Panic Button
            GestureDetector(
              onTap: _isLoading ? null : _sendPanicAlert,
              child: Container(
                width: 200,
                height: 200,
                decoration: BoxDecoration(
                  shape: BoxShape.circle,
                  color: _isLoading ? Colors.red.shade300 : Colors.red,
                  boxShadow: [
                    BoxShadow(
                      color: Colors.red.withOpacity(0.5),
                      blurRadius: 20,
                      spreadRadius: 5,
                    ),
                  ],
                ),
                child: Center(
                  child: _isLoading
                      ? const SizedBox(
                          width: 60,
                          height: 60,
                          child: CircularProgressIndicator(
                            valueColor:
                                AlwaysStoppedAnimation<Color>(Colors.white),
                            strokeWidth: 4,
                          ),
                        )
                      : const Text(
                          'PANIC',
                          style: TextStyle(
                            color: Colors.white,
                            fontSize: 32,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                ),
              ),
            ),
            const SizedBox(height: 40),
            if (_message != null)
              Text(
                _message!,
                style: const TextStyle(fontSize: 16),
                textAlign: TextAlign.center,
              ),
            const SizedBox(height: 20),
            // Tampilkan Koordinat Lokasi
            if (_currentLocation != null)
              Container(
                padding: const EdgeInsets.all(16),
                decoration: BoxDecoration(
                  border: Border.all(color: Colors.red),
                  borderRadius: BorderRadius.circular(8),
                ),
                child: Column(
                  children: [
                    const Text(
                      'Current Location:',
                      style: TextStyle(
                        fontSize: 14,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                    const SizedBox(height: 8),
                    Text(
                      _currentLocation!,
                      style: const TextStyle(fontSize: 12),
                      textAlign: TextAlign.center,
                    ),
                  ],
                ),
              ),
          ],
        ),
      ),
    );
  }
}