import 'package:flutter/material.dart';

class Days extends StatefulWidget {
  final ValueChanged<String> onChanged;

  const Days({required this.onChanged, super.key});

  @override
  createState() => _DaysState();
}

class _DaysState extends State<Days> {
  final List<bool> _selections = List.generate(7, (_) => false);
  final List<String> _days = [
    'Monday',
    'Tuesday',
    'Wednesday',
    'Thursday',
    'Friday',
    'Saturday',
    'Sunday'
  ];

  String _getSelectedDaysString() {
    List<String> selectedDays = [];
    for (int i = 0; i < _selections.length; i++) {
      if (_selections[i]) {
        selectedDays.add(_days[i]);
      }
    }
    return selectedDays.join(",");
  }

  void _updateSelections(int index) {
    setState(() {
      _selections[index] = !_selections[index];
      widget.onChanged(_getSelectedDaysString());
    });
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: List.generate(7, (index) {
        return SwitchListTile(
          title: Text(_days[index]),
          value: _selections[index],
          onChanged: (value) => _updateSelections(index),
        );
      }),
    );
  }
}