ambito/lib/src/pages/calendar/calendar_page.dart

import 'package:ambito/src/entity/_general/filter/item_filter.dart';
import 'package:ambito/src/entity/_general/filter/item_filter_repository.dart';
import 'package:ambito/src/entity/measure/measure_repository.dart';
import 'package:ambito/src/entity/measure/types/measure_types.dart';
import 'package:ambito/src/extensions/extensions.dart';
import 'package:ambito/src/packages/ambito_theme/ambito_theme.dart';
import 'package:collection/collection.dart';
import 'package:flutter/material.dart';
import 'package:screen_breakpoints/screen_breakpoints.dart';
import 'package:syncfusion_flutter_calendar/calendar.dart';

import '../../consts/consts.dart';
import '../../widgets/appbar/ambito_appbar.dart';

class CalendarPage extends StatefulWidget {
  const CalendarPage({super.key});

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

class CalendarPageState extends State<CalendarPage> {
  List<Appointment> appointments = <Appointment>[];

  Set<ItemFilter>? monthFilter = {};

  @override
  void initState() {
    initDataSource();
    super.initState();
  }

  initDataSource() {
    monthFilter = ItemFilterRepository().getByType('month');
    for (String month in months) {
      DateTime now = DateTime.now();
      int monthInt = months.indexOf(month) + 1;

      DateTime startDate = DateTime(now.year, monthInt, 1, 0, 0, 0);
      DateTime endDate = DateTime(
          now.year, monthInt, startDate.lastDayOfMonth.day, 23, 59, 59);

      ItemFilter? itemFilter =
          monthFilter?.firstWhereOrNull((item) => item.name == month);
      if (itemFilter != null) {
        List<MeasureTypes?> currentMeasures =
            MeasureRepository().getByIds(itemFilter.ids!);
        for (var measure in currentMeasures) {
          appointments.add(
            Appointment(
              startTime: startDate,
              endTime: endDate,
              isAllDay: true,
              subject: measure!.measureType ?? '',
              color: actionGroupColors[measure.measureGroup!.value!]!,
            ),
          );
        }
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    final AmbitoTheme theme = getTheme(context);

    return Scaffold(
      appBar: AmbitoAppbar(
        links: const ['dashboard', 'massnahmen'],
        breakpoint: Breakpoint.fromContext(context),
        theme: theme,
      ),
      body: Center(
        child: Padding(
          padding: const EdgeInsets.all(32),
          child: SfCalendar(
            firstDayOfWeek: 1,
            showNavigationArrow: true,
            view: CalendarView.month,
            dataSource: _AppointmentDataSource(appointments),
            monthViewSettings: const MonthViewSettings(
              appointmentDisplayMode: MonthAppointmentDisplayMode.appointment,
              appointmentDisplayCount: 64,
            ),
          ),
        ),
      ),
    );
  }

  _AppointmentDataSource _getCalendarDataSource() {
    List<Appointment> appointments = <Appointment>[];
    appointments.add(Appointment(
      startTime: DateTime.now(),
      endTime: DateTime.now().add(const Duration(minutes: 10)),
      subject: 'Meeting',
      isAllDay: true,
      color: Colors.blue,
      startTimeZone: '',
      endTimeZone: '',
    ));

    return _AppointmentDataSource(appointments);
  }
}

class _AppointmentDataSource extends CalendarDataSource {
  _AppointmentDataSource(List<Appointment> source) {
    appointments = source;
  }
}

/*class ActionDataSource extends CalendarDataSource {
  ActionDataSource(List<Action> source) {
    appointments = source;
  }

  @override
  DateTime getStartTime(int index) {
    return appointments![index].from;
  }

  @override
  DateTime getEndTime(int index) {
    return appointments![index].to;
  }

  @override
  bool isAllDay(int index) {
    return appointments![index].isAllDay;
  }

  @override
  String getSubject(int index) {
    return appointments![index].eventName;
  }

  @override
  String getStartTimeZone(int index) {
    return appointments![index].startTimeZone;
  }

  @override
  String getEndTimeZone(int index) {
    return appointments![index].endTimeZone;
  }

  @override
  Color getColor(int index) {
    return appointments![index].background;
  }
}

class Action {
  Action(
      {this.eventName = '',
      required this.from,
      required this.to,
      required this.background,
      this.isAllDay = false});

  String eventName;
  DateTime from;
  DateTime to;
  Color background;
  bool isAllDay;
}*/