using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows;
using System.Windows.Controls;
using Intromat.ViewModels;

namespace Intromat.Views
{
    public enum ESupportedFileTypes
    {
        Network,
        Shader
    }

    /// <summary>
    /// Interaction logic for NewFileWindow.xaml
    /// </summary>
    public partial class NewFileWindow
    {
        public NewFileWindow()
        {
            InitializeComponent();
            Type.SelectedItem = ESupportedFileTypes.Network;
        }

        public Func<FileViewModel>? Result { get; set; }

        public static Func<FileViewModel>? Show(Window? owner, MainViewModel mainVm, string? defaultValue = null)
        {
            var window = new NewFileWindow
            {
                MainViewModel = mainVm,
                Owner = owner
            };
            if (defaultValue != null)
                window.FileName.Text = defaultValue;
            window.FileName.SelectAll();
            window.FileName.Focus();
            window.UpdateResult();
            return window.ShowDialog() == true ? window.Result : null;
        }

        public MainViewModel? MainViewModel { get; set; }

        private void Type_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            UpdateResult();
        }

        private void Name_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            UpdateResult();
        }

        private void UpdateResult()
        {
            if (MainViewModel == null)
                return;

            var module = MainViewModel.Explorer.CurrentModule!;
            var parent = MainViewModel.Explorer.CurrentFolder!;
            Result = (ESupportedFileTypes)Type.SelectedItem switch
            {
                ESupportedFileTypes.Network => () => new DocumentViewModel(MainViewModel, module, parent, FileName.Text),
                ESupportedFileTypes.Shader  => () => new ShaderFileViewModel(MainViewModel, module, parent, FileName.Text),
                _                           => throw new NotImplementedException()
            };
        }

        private void ButtonOK_OnClick(object sender, RoutedEventArgs e)
        {
            DialogResult = true;
            Close();
        }

        private void ButtonCancel_OnClick(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
            Close();
        }

        private void NewFileWindow_OnClosing(object sender, CancelEventArgs e)
        {
            if (DialogResult != true)
                Result = null;
        }
    }
}