import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:geolocator/geolocator.dart';
import 'package:permission_handler/permission_handler.dart';

Future<void> main() async {
  await dotenv.load(fileName: ".env");
  runApp(SignLocatorApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Sign Locator',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: SignMapScreen(),
    );
  }
}

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

  @override
  SignMapScreenState createState() => SignMapScreenState();
}

class SignMapScreenState extends State<SignMapScreen> {
  GoogleMapController? mapController;
  Set<Marker> markers = {};
  LatLng _initialPosition = const LatLng(37.7749, -122.4194); // Default: SF
  BitmapDescriptor customIcon = BitmapDescriptor.defaultMarker;

  void customMarker() {
    BitmapDescriptor.asset(
      ImageConfiguration(),
      'assets/icons/sign_marker.png',
    ).then((icon) {
      setState(() {
        customIcon = icon;
      });
    });
  }

  @override
  void initState() {
    super.initState();
    _requestPermissions();
    customMarker();
  }

  Future<void> _requestPermissions() async {
    await Permission.locationWhenInUse.request();
    _goToUserLocation();
  }

  Future<void> _goToUserLocation() async {
    bool serviceEnabled = await Geolocator.isLocationServiceEnabled();
    if (!serviceEnabled) return;

    LocationPermission permission = await Geolocator.checkPermission();
    if (permission == LocationPermission.denied ||
        permission == LocationPermission.deniedForever) {
      permission = await Geolocator.requestPermission();
    }

    Position position = await Geolocator.getCurrentPosition();
    _initialPosition = LatLng(position.latitude, position.longitude);

    mapController?.animateCamera(CameraUpdate.newLatLng(_initialPosition));
  }

  void _addMarker() async {
    Position position = await Geolocator.getCurrentPosition();
    final markerId = MarkerId(DateTime.now().toString());
    final newMarker = Marker(
      markerId: markerId,
      position: LatLng(position.latitude, position.longitude),
      infoWindow: InfoWindow(title: 'Sign Location'),
      icon: customIcon,
    );
    setState(() {
      markers.add(newMarker);
    });
  }

  void _clearMarkers() {
    setState(() {
      markers.clear();
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: SizedBox(
          width: MediaQuery.of(context).size.width,
          child: Image.asset(
            'assets/app_title.png', // Replace with your image path
            fit: BoxFit.contain, // Adjust the height as needed
          ),
        ),
      ),
      body: GoogleMap(
        zoomGesturesEnabled: true,
        scrollGesturesEnabled: true,
        tiltGesturesEnabled: true,
        rotateGesturesEnabled: true,
        mapType: MapType.normal,
        onMapCreated: (controller) {
          mapController = controller;
        },
        initialCameraPosition: CameraPosition(
          target: _initialPosition,
          zoom: 14,
        ),
        myLocationEnabled: true,
        markers: markers,
      ),
      floatingActionButton: Column(
        mainAxisAlignment: MainAxisAlignment.end,
        children: [
          FloatingActionButton(
            onPressed: _addMarker,
            tooltip: 'Drop Pin',
            child: Icon(Icons.add_location),
          ),
          SizedBox(height: 12),
          FloatingActionButton(
            onPressed: _clearMarkers,
            backgroundColor: Colors.red,
            tooltip: 'Clear Pins',
            child: Icon(Icons.clear),
          ),
        ],
      ),
    );
  }
}