meincantor-app/lib/dashboard.dart

import 'package:MeinCantor/raumuebersicht.dart';
import 'package:MeinCantor/schulbibliothek.dart';
import 'package:MeinCantor/schulcomputer.dart';
import 'package:MeinCantor/schuelerzeitung.dart';
import 'package:MeinCantor/Settings/dashboard.dart';

import 'package:MeinCantor/main.dart';
import 'package:MeinCantor/networking.dart';
import 'package:MeinCantor/login.dart';

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';

class Dashboard extends StatefulWidget {
  const Dashboard({Key? key, this.restorationId}) : super(key: key);

  final String? restorationId;

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

Future<String> getSettingsString(String key) async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  String? value = prefs.getString(key);
  if (value == null || value.isEmpty) {
    value = "";
  }
  return value;
}

Widget buildSettingsString(String key, TextStyle? style) {
  return FutureBuilder(
      future: getSettingsString(key),
      builder: (context, snapshot) {
        if (snapshot.hasData) {
          return Text(snapshot.data as String, style: style);
        } else {
          return (const Center(child: CircularProgressIndicator()));
        }
      });
}

class _DashboardState extends State<Dashboard> with RestorationMixin {
  final RestorableInt _currentIndex = RestorableInt(0);
  @override
  Widget build(BuildContext context) {
    final drawerElements = ListView(
      children: [
        UserAccountsDrawerHeader(
            accountName: buildSettingsString('name', const TextStyle()),
            accountEmail: buildSettingsString('user', const TextStyle()),
            currentAccountPicture:
                Image.asset("assets/images/meincantor_r.png")),
        ListTile(
          title: const Text("Einstellungen"),
          onTap: () {
            Navigator.push(
              context,
              MaterialPageRoute(builder: (context) => const Settings()),
            );
          },
          leading: const Icon(Icons.settings_outlined),
        ),
        ListTile(
          title: const Text("Abmelden"),
          onTap: () async {
            SharedPreferences prefs = await SharedPreferences.getInstance();
            prefs.setString('api_key', "");
            Navigator.pushReplacement(
              context,
              MaterialPageRoute(builder: (context) => Login()),
            );
          },
          leading: const Icon(Icons.exit_to_app_outlined),
        ),
      ],
    );
    var bottomNavBarItems = [
      const BottomNavigationBarItem(
        icon: Icon(MdiIcons.homeOutline),
        label: "Startseite",
      ),
      const BottomNavigationBarItem(
          icon: Icon(MdiIcons.timetable), label: "Vertretungsplan"),
      const BottomNavigationBarItem(
          icon: Icon(Icons.notifications_outlined), label: "Hinweise"),
    ];
    return Scaffold(
      appBar: AppBar(
        title: const Text("GCG.MeinCantor"),
        centerTitle: true,
      ),
      body: _DashboardBottomNavView(
          key: UniqueKey(), item: bottomNavBarItems[_currentIndex.value]),
      drawer: Drawer(
        child: drawerElements,
      ),
      bottomNavigationBar: BottomNavigationBar(
        showUnselectedLabels: false,
        items: bottomNavBarItems,
        currentIndex: _currentIndex.value,
        onTap: (index) {
          setState(() {
            _currentIndex.value = index;
          });
        },
      ),
    );
  }

  @override
  String? get restorationId => widget.restorationId;

  @override
  void restoreState(RestorationBucket? oldBucket, bool initialRestore) {
    registerForRestoration(_currentIndex, 'bottom_navigation_tab_index');
  }
}

class _DashboardBottomNavView extends StatelessWidget {
  const _DashboardBottomNavView({Key? key, required this.item})
      : super(key: key);
  final BottomNavigationBarItem item;

  @override
  Widget build(BuildContext context) {
    if (item.label == "Startseite") {
      double _timeOfDayToDouble(TimeOfDay tod) => tod.hour + tod.minute / 60.0;
      int lessonCount;
      if (_timeOfDayToDouble(TimeOfDay.now()) <=
          _timeOfDayToDouble(const TimeOfDay(hour: 7, minute: 30))) {
        lessonCount = 1;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 7, minute: 30)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 8, minute: 20))) {
        lessonCount = 2;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 8, minute: 20)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 9, minute: 25))) {
        lessonCount = 3;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 9, minute: 25)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 10, minute: 15))) {
        lessonCount = 4;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 10, minute: 15)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 11, minute: 30))) {
        lessonCount = 5;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 11, minute: 30)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 12, minute: 20))) {
        lessonCount = 6;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 12, minute: 20)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 13, minute: 30))) {
        lessonCount = 7;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 13, minute: 30)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 14, minute: 20))) {
        lessonCount = 8;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
              _timeOfDayToDouble(const TimeOfDay(hour: 14, minute: 20)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 15, minute: 10))) {
        lessonCount = 9;
      } else if (_timeOfDayToDouble(TimeOfDay.now()) >
          _timeOfDayToDouble(const TimeOfDay(hour: 15, minute: 10)) &&
          _timeOfDayToDouble(TimeOfDay.now()) <=
              _timeOfDayToDouble(const TimeOfDay(hour: 16, minute: 00))) {
        lessonCount = 10;
      } else {
        lessonCount = -1;
      }

      var view = SingleChildScrollView(
        child: Column(children: [
          Row(
            mainAxisSize: MainAxisSize.max,
            children: [
              Padding(
                padding: const EdgeInsets.fromLTRB(20, 30, 20, 5),
                child: Text(
                  'Hallo,',
                  style: GoogleFonts.robotoSlab(
                    fontSize: 20,
                  ),
                ),
              ),
            ],
          ),
          Row(
            mainAxisSize: MainAxisSize.max,
            children: [
              Padding(
                padding: const EdgeInsets.fromLTRB(20, 5, 20, 20),
                child: buildSettingsString(
                  "name",
                  GoogleFonts.robotoSlab(
                    fontSize: 28,
                    fontWeight: FontWeight.w800,
                  ),
                ),
              )
            ],
          ),
          Row(
            mainAxisSize: MainAxisSize.max,
            children: [
              Padding(
                padding: const EdgeInsets.fromLTRB(20, 10, 0, 10),
                child: Text(
                  'Deine nächste Unterrichtsstunde:',
                  style: GoogleFonts.robotoSlab(
                    fontSize: 20,
                    fontWeight: FontWeight.w100,
                  ),
                ),
              )
            ],
          ),
          Padding(
            padding: const EdgeInsets.fromLTRB(20, 20, 20, 10),
            child: buildTodayClassTimetableLesson(lessonCount),
          ),
          Padding(
            padding: const EdgeInsets.fromLTRB(20, 20, 20, 10),
            child: Wrap(
              children: [
                SizedBox(
                  child: GestureDetector(
                    onTap: () async {
                      Navigator.push(
                        context,
                        MaterialPageRoute(builder: (context) => const SZ()),
                      );
                    },
                    child: Card(
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(10),
                        ),
                        child: const Padding(
                          padding: EdgeInsets.all(10),
                          child: ListTile(
                            title: Padding(
                              padding: EdgeInsets.fromLTRB(0, 0, 0, 10),
                              child: Icon(
                                MdiIcons.newspaper,
                                color: Palette.accent,
                                size: 48,
                              ),
                            ),
                            subtitle: Center(
                              child: Padding(
                                padding: EdgeInsets.fromLTRB(0, 10, 0, 0),
                                child: Text(
                                  'Schülerzeitung',
                                ),
                              ),
                            ),
                          ),
                        )),
                  ),
                  width: 175,
                ),
                SizedBox(
                  width: 175,
                  child: GestureDetector(
                    onTap: () async {
                      Navigator.push(
                        context,
                        MaterialPageRoute(builder: (context) => const SB()),
                      );
                    },
                    child: Card(
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(10),
                        ),
                        child: const Padding(
                          padding: EdgeInsets.all(10),
                          child: ListTile(
                            title: Padding(
                              padding: EdgeInsets.fromLTRB(0, 0, 0, 10),
                              child: Icon(
                                MdiIcons.libraryShelves,
                                color: Palette.accent,
                                size: 48,
                              ),
                            ),
                            subtitle: Center(
                              child: Padding(
                                padding: EdgeInsets.fromLTRB(0, 10, 0, 0),
                                child: Text(
                                  'Schulbibliothek',
                                ),
                              ),
                            ),
                          ),
                        )),
                  ),
                ),
                SizedBox(
                  width: 175,
                  child: GestureDetector(
                    onTap: () async {
                      Navigator.push(
                        context,
                        MaterialPageRoute(builder: (context) => const SC()),
                      );
                    },
                    child: Card(
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(10),
                        ),
                        child: const Padding(
                          padding: EdgeInsets.all(10),
                          child: ListTile(
                            title: Padding(
                              padding: EdgeInsets.fromLTRB(0, 0, 0, 10),
                              child: Icon(
                                MdiIcons.laptop,
                                color: Palette.accent,
                                size: 48,
                              ),
                            ),
                            subtitle: Center(
                              child: Padding(
                                padding: EdgeInsets.fromLTRB(0, 10, 0, 0),
                                child: Text(
                                  'Schulcomputer',
                                ),
                              ),
                            ),
                          ),
                        )),
                  ),
                ),
                SizedBox(
                  width: 175,
                  child: GestureDetector(
                    onTap: () async {
                      Navigator.push(
                        context,
                        MaterialPageRoute(
                            builder: (context) => const RoomOverview()),
                      );
                    },
                    child: Card(
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(10),
                        ),
                        child: const Padding(
                          padding: EdgeInsets.all(10),
                          child: ListTile(
                            title: Padding(
                              padding: EdgeInsets.fromLTRB(0, 0, 0, 10),
                              child: Icon(
                                MdiIcons.door,
                                color: Palette.accent,
                                size: 48,
                              ),
                            ),
                            subtitle: Center(
                              child: Padding(
                                padding: EdgeInsets.fromLTRB(0, 10, 0, 0),
                                child: Text(
                                  'Raumübersicht',
                                ),
                              ),
                            ),
                          ),
                        )),
                  ),
                )
              ],
            ),
          ),
        ]),
      );
      return view;
    } else if (item.label == "Vertretungsplan") {
      return 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;
        }

        // print(screenType);
        return Center(
          child: Container(
            constraints: BoxConstraints(
              // minHeight: 500, //minimum height
              // minWidth: 300, // minimum width
              //maximum height set to 100% of vertical height
              maxWidth: MediaQuery.of(context).size.width / factor,
              //maximum width set to 100% of width
            ),
            child: DefaultTabController(
              initialIndex: 0,
              length: 3,
              child: Scaffold(
                appBar: AppBar(
                  elevation: 0,
                  title: const TabBar(
                    tabs: <Widget>[
                      Tab(
                        text: "Heute",
                        icon: Icon(CupertinoIcons.calendar_today),
                      ),
                      Tab(
                        text: "Morgen",
                        icon: Icon(CupertinoIcons.calendar_today),
                      ),
                      Tab(
                        text: "Neuster Plan",
                        icon: Icon(CupertinoIcons.calendar),
                      ),
                    ],
                  ),
                ),
                body: TabBarView(
                  children: <Widget>[
                    buildTodayClassTimetable(),
                    buildTomorrowClassTimetable(),
                    buildClassTimetable(),
                  ],
                ),
              ),
            ),
          ),
        );
      });
    } else {
      return const Center(child: Text("Derzeit nichts hier..."));
    }
  }
}