/**********************************
 * main.dart
 *
 * demo how to access 
 * accelerometer values from flutter
 *
 ***********************************/
import 'dart:async'; 
import 'dart:typed_data';
import 'package:flutter/material.dart'; 
import 'package:sensors_plus/sensors_plus.dart'; 

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

class MyApp extends StatelessWidget { 
@override Widget build(BuildContext context) { 
  return MaterialApp( 
  debugShowCheckedModeBanner: false, 
  home: AccelerometerExample()); }} 

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

@override 
State<AccelerometerExample> createState() => _AccelerometerExampleState(); } 

class _AccelerometerExampleState extends State<AccelerometerExample> {
  AccelerometerEvent? accel;
  late StreamSubscription<AccelerometerEvent> subs;
  late Timer timer; 

@override void dispose(){
  super.dispose();
  subs.cancel();
  timer.cancel();}

  @override void initState() { 
	super.initState();
	subs = accelerometerEventStream().listen((AccelerometerEvent event){
	  setState((){ accel = event; });});
	  
  timer = Timer.periodic(const Duration(milliseconds: 500), (_) {
    setState(() { refresh();});});}

  void refresh(){
    // send to bluetooth data
    int x = accel!.x.toInt();
    int y = accel!.y.toInt();
    if (x > 2)  print('left');
    if (x < -2) print('right');
    if (y < -2) print('up');
    if (y > 2)  print('down');}

@override 
Widget build(BuildContext context) { 
  return Scaffold(appBar: AppBar(title: Text('Accelerometer Example')), 
	body: Center(child: Column( 
	  mainAxisAlignment: MainAxisAlignment.center, 
	  children: <Widget>[ 
	    Text('Accelerometer Data:',style: TextStyle(fontSize: 20)),
			 
		SizedBox(height: 10),
			
		Text('X: ${accel!.x.toInt()}, '
		         'Y: ${accel!.y.toInt()}',)
])));}}