import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:toast/toast.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'url_laucher'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  abrirUrl() async {
    const url = 'http://unilavras.edu.br';
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      Toast.show("Não foi possível abrir o site $url", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  abrirWhatsApp() async {
    var whatsappUrl = "whatsapp://send?phone=5535988489468&text=Olá,tudo bem?";

    if (await canLaunch(whatsappUrl)) {
      await launch(whatsappUrl);
    } else {
      Toast.show("Não foi possível abrir o WhatsApp", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  abrirEmail() async {
    final Uri params = Uri(
      scheme: 'mailto',
      path: 'joaocesar@unilavras.edu.br',
      query: 'subject=Reportar&body=Detalhe aqui qual bug você encontrou: ',
    );
    String url = params.toString();
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      Toast.show("Não foi possível abrir o cliente de email", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  abrirGoogleMaps() async {
    const urlMap =
        "https://www.google.com/maps/search/?api=1&query=-21.245138,-44.994862";
    if (await canLaunch(urlMap)) {
      await launch(urlMap);
    } else {
      Toast.show("Não foi possível abrir o Google Maps", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  abrirMessenger() async {
    var messengerUrl = 'http://m.me/unilavras';
    if (await canLaunch(messengerUrl)) {
      await launch(messengerUrl);
    } else {
      Toast.show("Não foi possível abrir o Messenger", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  abrirContatos() async {
    const url = 'content://com.android.contacts/contacts';
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      Toast.show("Não foi possível abrir os contatos", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  enviarSms() async {
    const url = "sms:99999999999?body=Olá, tudo bem?";
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      Toast.show("Não foi possível abrir abrir o aplicativo", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  fazerLigacao() async {
    const url = "tel:99999999999";
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      Toast.show("Não foi possível abrir abrir o discador", context,
          duration: Toast.LENGTH_SHORT, gravity: Toast.BOTTOM);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirUrl();
              },
              child: new Text("Navegador"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirWhatsApp();
              },
              child: new Text("Whatsapp"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirEmail();
              },
              child: new Text("Email"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirGoogleMaps();
              },
              child: new Text("Mapas"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirMessenger();
              },
              child: new Text("Messenger"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                abrirContatos();
              },
              child: new Text("Contatos"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                enviarSms();
              },
              child: new Text("SMS"),
            ),
            new RaisedButton(
              padding: const EdgeInsets.all(8.0),
              textColor: Colors.white,
              color: Colors.blue,
              onPressed: () {
                fazerLigacao();
              },
              child: new Text("Telefone"),
            ),
          ],
        ),
      ),
    );
  }
}