import 'package:flutter/material.dart';
import 'dart:async';
import 'package:permission_handler/permission_handler.dart';
import 'package:flutter_smartconfig/flutter_smartconfig.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'ESP Onetouch Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'ESP Onetouch Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  final TextEditingController _bssidFilter = new TextEditingController();
  final TextEditingController _ssidFilter = new TextEditingController();
  final TextEditingController _passwordFilter = new TextEditingController();

  bool _isLoading = false;

  String _ssid = "";
  String _bssid = "";
  String _password = "";

  _MyHomePageState() {
    _ssidFilter.addListener(_ssidListen);
    _passwordFilter.addListener(_passwordListen);
    _bssidFilter.addListener(_bssidListen);
  }

  void _ssidListen() {
    if (_ssidFilter.text.isEmpty) {
      _ssid = "";
    } else {
      _ssid = _ssidFilter.text;
    }
  }

  void _bssidListen() {
    if (_bssidFilter.text.isEmpty) {
      _bssid = "";
    } else {
      _bssid = _bssidFilter.text;
    }
  }

  void _passwordListen() {
    if (_passwordFilter.text.isEmpty) {
      _password = "";
    } else {
      _password = _passwordFilter.text;
    }
  }

  Future<void> _configureEsp() async {
    setState(() {
      _isLoading = true;
    });

    dynamic data = await FlutterSmartconfig.configureEsp(
        ssid: _ssid, bssid: _bssid, password: _password);

    print(data);

    setState(() {
      _isLoading = false;
    });
  }

  Future<void> _getConnectedWiFiInfo() async {
    Map<PermissionGroup, PermissionStatus> permissions =
        await PermissionHandler().requestPermissions([
      PermissionGroup.location,
      PermissionGroup.locationAlways,
      PermissionGroup.locationWhenInUse
    ]);

    if (permissions[PermissionGroup.location] != PermissionStatus.granted ||
        permissions[PermissionGroup.locationAlways] !=
            PermissionStatus.granted ||
        permissions[PermissionGroup.locationWhenInUse] !=
            PermissionStatus.granted) {
      showDialog(
        context: context,
        builder: (BuildContext context) {
          return AlertDialog(
            title: new Text("Fehler!"),
            content: new Text(
                "Wir benötigen Zugriff auf deinen Standort um auf die WLAN Funktion deines Betriessystems zugreifen zu können!"),
            actions: <Widget>[
              new FlatButton(
                child: new Text("Close"),
                onPressed: () {
                  Navigator.of(context).pop();
                },
              ),
            ],
          );
        },
      );
      return;
    }

    Map<String, String> data = await FlutterSmartconfig.getConnectedWiFiInfo();

    setState(() {
      _ssidFilter.text = data["ssid"];
      _bssidFilter.text = data["bssid"];
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Center(
            child: _isLoading
                ? Container(
                    child: Center(
                      child: CircularProgressIndicator(
                        valueColor:
                            AlwaysStoppedAnimation<Color>(Colors.lightBlue),
                      ),
                    ),
                    color: Colors.white.withOpacity(0.8),
                  )
                : new Container(
                    padding: new EdgeInsets.all(10.0),
                    child: new Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: <Widget>[
                        new Container(height: 10),
                        new Container(
                            child: Column(
                                mainAxisAlignment: MainAxisAlignment.start,
                                children: <Widget>[
                              Text("ESP Touch v0.3.7.0"),
                              new TextField(
                                controller: _ssidFilter,
                                decoration:
                                    new InputDecoration(labelText: 'ssid'),
                              ),
                              new TextField(
                                controller: _bssidFilter,
                                decoration:
                                    new InputDecoration(labelText: 'bssid'),
                              ),
                              RaisedButton(
                                child: Text('Get Connected WiFi details'),
                                onPressed: _getConnectedWiFiInfo,
                              )
                            ])),
                        new Container(
                          child: new TextField(
                            controller: _passwordFilter,
                            decoration:
                                new InputDecoration(labelText: 'Password'),
                          ),
                        ),
                        new RaisedButton(
                          child: new Text('Configure ESP'),
                          onPressed: _configureEsp,
                        ),
                      ],
                    ))) // This trailing comma makes auto-formatting nicer for build methods.
        );
  }
}