meincantor-app/lib/timetable.dart

import 'package:MeinCantor/teacher_presets.dart';
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'subject_presets.dart';

import 'color_presets.dart';

class ClassTimetableBuilder {
  final RefreshIndicator view;
  ClassTimetableBuilder({required this.view});
  factory ClassTimetableBuilder.buildView(Map<String, dynamic> json, BuildContext context) {
    List<Widget> list = LessonsListBuilder.buildList(json).lessons;
    String info = TimetableInfo.fromJson(json).info;
    if(info.isNotEmpty) {
      list.insert(0, ListTile(title: Text("Informationen"), leading: Icon(MdiIcons.information), onTap: () {
        showModalBottomSheet<void>(
          isScrollControlled: true,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(25.0),
          ),
          context: context,
          builder: (BuildContext context) {
            return Container(
              height: 400,
              child: ListView(
                //mainAxisAlignment: MainAxisAlignment.center,
                //mainAxisSize: MainAxisSize.min,
                children: <Widget>[
                  ListTile(
                    title: Text("Informationen", style: TextStyle(fontWeight: FontWeight.bold)),
                    leading: Icon(Icons.arrow_back),
                    onTap: () {
                      Navigator.of(context).pop();
                    },
                  ),
                  Padding(
                    padding: const EdgeInsets.all(20),
                    child: Text(info),
                  ),
                  /*ElevatedButton(
                              child: const Text('Close BottomSheet'),
                              onPressed: () => Navigator.pop(context),
                            )*/
                ],
              ),
            );
          },
        );
      },
      )
      );
    }
    return ClassTimetableBuilder(
        view: RefreshIndicator(
          onRefresh: () {
            return Future.delayed(const Duration(seconds: 1));
          },
          child: ListView(
            //shrinkWrap: true,
            physics: const AlwaysScrollableScrollPhysics(),
            children: list,
          ),
      )
    );
  }
}

Future<Color> buildLessonColor(String lesson) async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  if (!prefs.containsKey("color$lesson")) {
    Color lessonPresetColor = colors[lesson] ?? Colors.grey[700];
    prefs.setInt("color$lesson", lessonPresetColor.value);
  }
  Color lessonColor = Color(prefs.getInt("color$lesson")!);
  return lessonColor;
}

class LessonsListBuilder {
  final List<Widget> lessons;
  LessonsListBuilder({required this.lessons});
  factory LessonsListBuilder.buildList(Map<String, dynamic> json, {int count: 0}) {
    List<Widget> children = [];
    ClassTimetable.fromJson(json).timetable.forEach((element) {
      List<Widget> cardChildren = [];
      print(element.count.toString() + " " + count.toString());
      if (element.count.toString() == count.toString() || count == 0) {
        cardChildren.add(ListTile(
            title: Text(element.count.toString() + '.' + ' ' + element.name,
                style: TextStyle(color: element.fontColor)),
            subtitle: Row(children: [
              Icon(CupertinoIcons.person, color: element.fontColor),
              const SizedBox(width: 5),
              Text(element.teacher, style: TextStyle(color: element.fontColor)),
              const Spacer(),
              Icon(CupertinoIcons.home, color: element.fontColor),
              const SizedBox(width: 5),
              Text(element.room, style: TextStyle(color: element.fontColor))
            ]),
            leading: Icon(CupertinoIcons.time, color: element.fontColor)));
        if (element.info != '') {
          cardChildren.add(ListTile(
              title: Text(element.info,
                  style: TextStyle(color: element.fontColor))));
        }
        Widget card = FutureBuilder(
          future: element.color,
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              return Card(
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(15.0),
                  ),
                  color: snapshot.data as Color,
                  child: Column(
                    children: cardChildren,
                  ));
            } else {
              return (const Center(child: CircularProgressIndicator()));
            }
          },
        );
        children.add(card);
      }
    });
    return LessonsListBuilder(lessons: children);
  }
}

class TimetableInfo {
  final String info;
  TimetableInfo({required this.info});
  factory TimetableInfo.fromJson(Map<String, dynamic> json) {
    return TimetableInfo(info: json['info']);
  }
}

class ClassTimetable {
  final List timetable;
  ClassTimetable({required this.timetable});
  factory ClassTimetable.fromJson(Map<String, dynamic> json) {
    print(json);
    List<TimetableLesson> lessons = [];
    json['courses'].forEach((value) {
      var name;
      var teacher;
      var room;

      if (value['Fa'].runtimeType != String) {
        name = value['Fa']['#text'];
      } else {
        name = value['Fa'];
      }
      if (value['Le'].runtimeType != String) {
        teacher = value['Le']['#text'];
      } else {
        teacher = value['Le'];
      }
      print(value['Ra']);
      if (value['Ra'].runtimeType != String && value['Ra'].runtimeType != int) {
        if (value['Ra']['#text'] == '&nbsp;') {
          room = '';
        } else if (value['Ra']['#text'] == null) {
          room = '';
        } else {
          room = value['Ra']['#text'];
        }
      } else if (value['Ra'] == '&nbsp;') {
        room = '';
      } else {
        room = value['Ra'];
      }
      Color fontColor;
      if (name == '---') {
        fontColor = Colors.red;
      } else {
        fontColor = Colors.white;
      }
      var info;
      if (value['If'].runtimeType != String) {
        info = '';
      } else {
        info = value['If'];
      }

      Future<Color> lessonColor = buildLessonColor(name);

      lessons.add(TimetableLesson(
          value['St'],
          names[name] ?? name.toString(),
          teachers[teacher] ?? teacher.toString(),
          room.toString(),
          value['If'].toString(),
          lessonColor,
          fontColor,
          info));
    });

    return ClassTimetable(timetable: lessons);
  }
}

class TimetableLesson {
  final int count;
  final String name;
  final String teacher;
  final String room;
  final String comment;
  final Future<Color> color;
  final Color fontColor;
  final String info;
  const TimetableLesson(this.count, this.name, this.teacher, this.room,
      this.comment, this.color, this.fontColor, this.info);
}