// GCG.MeinCantor - Die Schulplattform für Cantorianer.
// Copyright (C) 2021-2022 Georg-Cantor-Gymnasium Halle (Saale)

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import 'package:background_fetch/background_fetch.dart';
import 'package:flutter/material.dart';
import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
import 'package:meincantor/background_fetch.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:meincantor/login.dart';

class DevSettings extends StatefulWidget {
  const DevSettings({Key? key}) : super(key: key);

  @override
  State<StatefulWidget> createState() => _DevSettingsState();
}

class _DevSettingsState extends State<DevSettings> {
  int _status = 0;

  void _onClickStatus() async {
    int status = await BackgroundFetch.status;
    print('[BackgroundFetch] status: $status');
    setState(() {
      _status = status;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text("Entwickler-Einstellungen"),
          centerTitle: true,
        ),
        body: LayoutBuilder(builder: (context, constraints) {
          double widgetWidth = constraints.maxWidth;

          int factor;

          if (widgetWidth <= 600) {
            factor = 1;
          } else if (widgetWidth <= 1400) {
            factor = 2;
          } else if (widgetWidth <= 2000) {
            factor = 3;
          } else {
            factor = 1;
          }

          return Center(
            heightFactor: 1,
            child: Container(
                constraints: BoxConstraints(
                  maxWidth: MediaQuery.of(context).size.width / factor,
                ),
                child: ListView(
                  padding: const EdgeInsets.fromLTRB(20, 20, 20, 20),
                  children: [
                    Padding(
                        padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
                        child: TextField(
                            decoration: const InputDecoration(
                              icon: Icon(MdiIcons.keyOutline),
                              border: OutlineInputBorder(),
                              labelText: 'MeinCantor API-Schlüssel',
                            ),
                            onSubmitted: (String value) async {
                              SharedPreferences prefs =
                                  await SharedPreferences.getInstance();
                              String apiKey = value;
                              await prefs.setString('api_key', apiKey);
                              final snackBar = SnackBar(
                                  content: Text(
                                      'Neuer API-Schlüssel gesetzt: $apiKey'));
                              ScaffoldMessenger.of(context)
                                  .showSnackBar(snackBar);
                            })),
                    const Divider(),
                    Padding(
                        padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
                        child: OutlinedButton(
                          onPressed: () async {
                            Navigator.push(
                              context,
                              MaterialPageRoute(builder: (context) => Login()),
                            );
                          },
                          child: const Text("Benutzerdaten neu laden"),
                        )),
                    const Divider(),
                    Padding(
                        padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
                        child: OutlinedButton(
                          onPressed: () {
                            _onClickStatus();
                          },
                          child: const Text(
                              "Status der Hintergrundoperation anzeigen"),
                        )),
                    const Divider(),
                    Padding(
                        padding: const EdgeInsets.fromLTRB(10, 10, 10, 10),
                        child: Text(_status.toString())),
                    const Divider(),
                    Padding(
                        padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
                        child: OutlinedButton(
                          onPressed: () async {
                            await backgroundFetchTimetable();
                          },
                          child: const Text(
                              "Stundenplan im Hintergrund neu laden"),
                        )),
                    const Divider(),
                    Padding(
                        padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
                        child: OutlinedButton(
                          onPressed: () async {
                            await backgroundFetchArticles();
                          },
                          child: const Text(
                              "Schülerzeitung im Hintergrund neu laden"),
                        )),
                  ],
                )),
          );
        }));
  }
}