import 'package:flutter/material.dart';
import 'package:cpd/database/habit.dart';
import '../database/todo_interface.dart';
import '../pages/iconpage.dart';

class EditHabitDialog extends StatefulWidget {
  final Habit todo;
  final ToDoInterface todoDB;
  final Function fetchTodos;

  const EditHabitDialog({super.key,
    required this.todo,
    required this.todoDB,
    required this.fetchTodos,
  });

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

class EditHabitDialogState extends State<EditHabitDialog> {
  late String newTitle;
  late String newSubtitle;
  late IconData newIcon;

  @override
  void initState() {
    super.initState();
    newTitle = widget.todo.title;
    newSubtitle = widget.todo.subtitle;
    newIcon = widget.todo.icon;
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Edit Habit'),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          TextFormField(
            initialValue: newTitle,
            onChanged: (value) {
              newTitle = value;
            },
            decoration: const InputDecoration(
              icon: Icon(Icons.title),
              labelText: "Title",
              hintText: "Enter task title",
            ),
            onFieldSubmitted: (_) =>
                _submitForm(context, widget.todo, newTitle, newSubtitle),
          ),

          TextFormField(
            initialValue: newSubtitle,
            onChanged: (value) {
              newSubtitle = value;
            },
            decoration: const InputDecoration(
              icon: Icon(Icons.title),
              labelText: "Subtitle",
              hintText: "Enter task subtitle",
            ),
            onFieldSubmitted: (_) =>
                _submitForm(context, widget.todo, newTitle, newSubtitle),
          ),
          IconButton(
            icon: Icon(newIcon),
            onPressed: () async {
              IconData? selectedIcon = await Navigator.push(
                context,
                MaterialPageRoute(
                  builder: (context) => IconPage(selectedIcon: newIcon,
                  onIconSelected: (icon) {
                    setState(() {
                      newIcon = icon;
                    });
                  },)
                ),
              );
              if (selectedIcon != null) {
                setState(() {
                  newIcon = selectedIcon;
                });
              }
            },
          ),
        ],
      ),
      actions: [
        TextButton(
          onPressed: () {
            widget.fetchTodos();
            Navigator.pop(context);
          },
          child: const Text('Cancel'),
        ),
        TextButton(
          onPressed: () async {
            await widget.todoDB.update(
              id: widget.todo.id,
              title: newTitle,
              subtitle: newSubtitle,
              icon: newIcon,
            );
            if (!context.mounted) return;
            widget.todo.updateIcon(newIcon.codePoint, newIcon.fontFamily!);
            widget.fetchTodos();
            Navigator.of(context).pop();
          },
          child: const Text('Save'),
        ),
      ],
    );
  }

  void _submitForm(BuildContext context, Habit todo, String newTitle,
      String newSubtitle) async {

    await widget.todoDB.update(
      id: todo.id,
      title: newTitle,
      subtitle: newSubtitle,
      icon: newIcon,
    );
    if (!context.mounted) return;
    widget.todo.updateIcon(newIcon.codePoint, newIcon.fontFamily!);
    widget.fetchTodos();
    Navigator.of(context).pop();
  }
}