todo-flutter/lib/modals/edittodomodal.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:todoapp/elems/todo.dart';
import 'package:todoapp/modals/datepickermodal.dart';
import 'package:todoapp/modals/timepickermodal.dart';
import 'package:todoapp/providers/todoprovider.dart';

class EditTodoModal {
  static void add(BuildContext context, String title, DateTime dueTime) {
    showModalBottomSheet(
      context: context,
      showDragHandle: true,
      useSafeArea: true,
      scrollControlDisabledMaxHeightRatio: 1,
      builder: (context) => ModalEditTodo(
          oldValue: title,
          initDate: DateTime(dueTime.year, dueTime.month, dueTime.day),
          initTime: TimeOfDay(hour: dueTime.hour, minute: dueTime.minute)),
    );
  }
}

class ModalEditTodo extends StatefulWidget {
  const ModalEditTodo(
      {super.key,
      required this.oldValue,
      required this.initDate,
      required this.initTime});

  final String oldValue;
  final DateTime initDate;
  final TimeOfDay initTime;

  @override
  State<ModalEditTodo> createState() => _ModalEditTodoState();
}

class _ModalEditTodoState extends State<ModalEditTodo> {
  String tempValue = "";
  TimeOfDay tempTimeSelect = TimeOfDay.now();
  DateTime tempDateSelect = DateTime.now();

  String formatNumber(int number) {
    if (number < 10) {
      return "0$number";
    }
    return number.toString();
  }

  DateTime combineTime() {
    return DateTime(tempDateSelect.year, tempDateSelect.month,
        tempDateSelect.day, tempTimeSelect.hour, tempTimeSelect.minute);
  }

  bool firstBuild = true;

  @override
  Widget build(BuildContext context) {
    if (firstBuild) {
      tempValue = widget.oldValue;
      tempDateSelect = widget.initDate;
      tempTimeSelect = widget.initTime;
      firstBuild = false;
    }

    return Padding(
      padding: const EdgeInsets.only(left: 30, right: 30),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          TextFormField(
            autofocus: true,
            initialValue: widget.oldValue,
            decoration: const InputDecoration(labelText: "Title"),
            onChanged: (value) => tempValue = value,
            onFieldSubmitted: (value) {
              context.read<TodoProvider>().updateTodo(widget.oldValue, value, combineTime());
              Navigator.pop(context);
            },
          ),
          const SizedBox(height: 20),
          FilledButton.tonal(
            onPressed: () async {
              tempDateSelect =
                  (await DatePickerModal.add(context, tempDateSelect))!;
              print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
              print(tempDateSelect);
              setState(() {});
            },
            child: Row(
              mainAxisAlignment: MainAxisAlignment.start,
              children: [
                const Icon(Icons.date_range),
                const SizedBox(width: 20),
                Text(
                    "${tempDateSelect.year}-${formatNumber(tempDateSelect.month)}-${formatNumber(tempDateSelect.day)}")
              ],
            ),
          ),
          const SizedBox(height: 10),
          FilledButton.tonal(
            onPressed: () async {
              tempTimeSelect =
                  (await TimePickerModal.add(context, tempTimeSelect))!;
              setState(() {});
            },
            child: Row(
              mainAxisAlignment: MainAxisAlignment.start,
              children: [
                const Icon(Icons.timer),
                const SizedBox(width: 20),
                Text(
                    "${formatNumber(tempTimeSelect.hour)}:${formatNumber(tempTimeSelect.minute)}")
              ],
            ),
          ),
          const SizedBox(height: 20),
          SegmentedButton(
            segments: const [
              ButtonSegment(
                  value: "Delete",
                  label: Text("Delete"),
                  icon: Icon(Icons.delete)),
              ButtonSegment(
                  value: "Cancel",
                  label: Text("Cancel"),
                  icon: Icon(Icons.cancel)),
              ButtonSegment(
                  value: "Save", label: Text("Save"), icon: Icon(Icons.save)),
            ],
            selected: const {"None"},
            style: ButtonStyle(
                iconColor: WidgetStatePropertyAll(
                    Theme.of(context).colorScheme.primary)),
            onSelectionChanged: (p0) {
              if (p0.last == "Save") {
                context.read<TodoProvider>().updateTodo(widget.oldValue, tempValue, combineTime());
              } else if (p0.last == "Delete") {
                context.read<TodoProvider>().removeTodo(widget.oldValue);
              }
              Navigator.pop(context);
            },
          )
        ],
      ),
    );
  }
}