import 'package:flutter/material.dart';
import 'package:uni_links/uni_links.dart';
import 'package:shared_preferences/shared_preferences.dart';
import './page/gopher.dart';
import './page/settings.dart';
import './constants.dart';
import './gopher.dart';

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

class MyApp extends StatelessWidget {
  MyApp() {
    WidgetsFlutterBinding.ensureInitialized(); // for settings
    SharedPreferences.getInstance().then((prefs) {
      var init = prefs.getBool("initial_settings");
      if (init == null || !init) {
        prefs.setDouble("font_size", DEFAULT_FONT_SIZE);

        prefs.setBool("initial_settings", true);
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'gopher',
      theme: ThemeData(
        brightness: Brightness.dark,
        primaryColor: Colors.indigo,
      ),
      home: MyHomePage(title: 'gopher'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

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

  @override
  _MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
  String url = "";
  bool forceLoad = false;

  _MyHomePageState() {
    getInitialLink().then((s) {
      if (s != null) {
        setState(() {
          forceLoad = true;
          url = parseWeakInput(s).toString();
        });
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    Widget _createEntry(String title, String url) {
      return ListTile(
        title: Text(title),
        onTap: () { GopherPage.openURI(context, Uri.parse(url)); },
      );
    }

    if (forceLoad) {
      var uri = Uri.parse(url);
      forceLoad = false;
      return GopherPage(uri: uri);
    }

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Builder(
        builder: (BuildContext context) {
          return Center(
            child: ListView(
              padding: EdgeInsets.all(8.0),
              children: <Widget>[
                const Text(
                  "URL:",
                ),
                TextField(
                  enabled: true,
                  enableInteractiveSelection: true,
                  controller: TextEditingController(text: url),
                  onSubmitted: (s) {
                    url = s;
                    var uri = parseWeakInput(s);
                    GopherPage.openURI(context, uri);
                  },
                ),
                const Divider(),
                const Text(
                  "Creators favorites:",
                ),
                _createEntry("Bitreich", "gopher://bitreich.org/1"),
                _createEntry("Floodgap", "gopher://gopher.floodgap.com/1"),
                _createEntry("Gopherpedia", "gopher://gopherpedia.com/1"),
                _createEntry("HackerNews mirror", "gopher://hngopher.com/1"),
                const Divider(),
                ListTile(
                  title: Text("Settings"),
                  onTap: () { Navigator.push(context, MaterialPageRoute<void>(
                    builder: (BuildContext context) {
                      return SettingsPage();
                    },
                  ));},
                ),
              ],
            ),
          );
        },
      ),
    );
  }
}