import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import '../../services/location_service.dart';

class MapScreen extends ConsumerStatefulWidget {
  const MapScreen({super.key});

  @override
  ConsumerState<MapScreen> createState() => _MapScreenState();
}

class _MapScreenState extends ConsumerState<MapScreen> {
  GoogleMapController? _mapController;
  MapType _currentMapType = MapType.normal;

  @override
  Widget build(BuildContext context) {
    final locationAsync = ref.watch(locationStreamProvider);

    // Position is handled inside the when block

    return Scaffold(
      appBar: AppBar(
        title: const Text('Map'),
        actions: [
          IconButton(
            icon: Icon(
              _currentMapType == MapType.normal
                  ? Icons.satellite
                  : Icons.map,
            ),
            onPressed: () {
              setState(() {
                _currentMapType = _currentMapType == MapType.normal
                    ? MapType.satellite
                    : MapType.normal;
              });
            },
          ),
        ],
      ),
      body: locationAsync.when(
        data: (position) {
          final currentLatLng = LatLng(position.latitude, position.longitude);
          
          if (_mapController != null) {
            _mapController!.animateCamera(
              CameraUpdate.newCameraPosition(
                CameraPosition(
                  target: currentLatLng,
                  zoom: 17.0,
                  bearing: position.heading,
                ),
              ),
            );
          }

          return GoogleMap(
            initialCameraPosition: CameraPosition(
              target: currentLatLng,
              zoom: 17.0,
            ),
            mapType: _currentMapType,
            myLocationEnabled: true,
            myLocationButtonEnabled: true,
            compassEnabled: true,
            onMapCreated: (controller) {
              _mapController = controller;
            },
          );
        },
        loading: () => const Center(child: CircularProgressIndicator()),
        error: (error, stack) => Center(child: Text('Error: $error')),
      ),
    );
  }
}