using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace ILSOS_KS.Views.Dialog
{
    public interface IDialogService
    {
        string ShowInputDialog(string windowTitle, string iputLable);
    }

    public class DialogService : IDialogService
    {
        private static DialogService _instance;
        public static DialogService Instance
        {
            get
            {
                if (_instance == null)
                    _instance = new DialogService();
                return _instance;
            }
        }

        private DialogService() { }

        public string ShowInputDialog(string windowTitle, string iputLable)
        {
            string result = null;

            // UI 스레드에서 InputWindow 생성 및 ShowDialog 호출
            Application.Current.Dispatcher.Invoke(() =>
            {
                var window = new InputWindow(windowTitle, iputLable);
 
                bool? dialogResult = window.ShowDialog();
                if (dialogResult == true)
                    result = window.InputValue;
            });

            return result;
        }
    }

    public class InputService
    {
        private static InputService _instance;
        public static InputService Instance
        {
            get
            {
                if (_instance == null)
                    _instance = new InputService(DialogService.Instance);
                return _instance;
            }
        }

        private readonly IDialogService _dialogService;

        private InputService(IDialogService dialogService)
        {
            _dialogService = dialogService;
        }

        public string RequestUserInput(string windowTitle, string iputLable)
        {
            string input = _dialogService.ShowInputDialog(windowTitle, iputLable);
            if (!string.IsNullOrEmpty(input))
            {
                return input;
            }

            return null;
        }
    }
}