//
//  FileDialog.cs
//
//  Author:
//       Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
//  Copyright (c) 2015 jp
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Xml.Serialization;
using System.ComponentModel;
using System.IO;
using System.Collections.Generic;
using System.Diagnostics;
using OpenTK.Input;
using System.Linq;
using System.Text.RegularExpressions;

namespace go
{
	public class FileDialog: IValueChange
	{
		#region IValueChange implementation
		public event EventHandler<ValueChangeEventArgs> ValueChanged;
		public virtual void NotifyValueChanged(string MemberName, object _value)
		{
			ValueChanged.Raise(this, new ValueChangeEventArgs(MemberName, _value));			
		}
		#endregion

		Window window;
		DirectoryInfo currentDir;
		FileInfo selectedFile;
		string searchPattern = "*";

		#region CTOR
		public FileDialog ()
		{
			currentDir = new DirectoryInfo (Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments));
			window = Interface.Load("#go.Templates.FileDialog.goml") as Window;
			window.DataSource = this;
		}
		#endregion

		public string CurrentPath {
			get { return currentDir.FullName; }
			set {
				currentDir = new DirectoryInfo (value);
				NotifyValueChanged ("CurrentPath", CurrentPath);
			}
		}
		public string SearchPattern {
			get { return searchPattern; }
			set {
				searchPattern = value;
				NotifyValueChanged ("Files", Files);
			}
		}

		public DirectoryInfo[] Directories
		{
			get {
				//currentDir.GetDirectories
				List<DirectoryInfo> tmp = currentDir.GetDirectories ().Where(fi => !fi.Attributes.HasFlag(FileAttributes.Hidden)).ToList();
				if (currentDir.Parent != null)
					tmp.Insert (0, currentDir.Parent);
				return tmp.ToArray ();
			}
		}
		public FileInfo[] Files
		{
			get {
				string[] exts = searchPattern.Replace("*","").Split ('|');
				//return currentDir.GetFiles (searchPattern).Where(fi => !fi.Attributes.HasFlag(FileAttributes.Hidden)).ToArray();
				return currentDir.GetFiles().Where(f => exts.Any
					(x => f.Name.EndsWith (x, StringComparison.InvariantCultureIgnoreCase))).ToArray();
			}
		}

		public void Show(){
			OpenTKGameWindow.currentWindow.AddWidget(window);
		}

		void OnSelectedItemChanged (object sender, SelectionChangeEventArgs e)
		{
			currentDir = e.NewValue as DirectoryInfo;
			NotifyValueChanged ("CurrentPath", CurrentPath);
			NotifyValueChanged ("Directories", Directories);
			NotifyValueChanged ("Files", Files);

		}
		void onFileListItemChanged (object sender, SelectionChangeEventArgs e)
		{
			selectedFile = e.NewValue as FileInfo;
		}
		void onFileSelect(object sender, OpenTK.Input.MouseButtonEventArgs e){
			OpenTKGameWindow.currentWindow.DeleteWidget(window);
		}
	}
	public class DirContainer: IValueChange
	{
		#region IValueChange implementation
		public event EventHandler<ValueChangeEventArgs> ValueChanged;
		public void NotifyValueChanged(string name, object value)
		{
			ValueChanged.Raise (this, new ValueChangeEventArgs (name, value));
		}
		#endregion

		public DirectoryInfo CurDir;
		public DirContainer(DirectoryInfo _dir){
			CurDir = _dir;
		}
		public string Name {
			get { return CurDir.Name; }
		}

		void onDirUp(object sender, MouseButtonEventArgs e)
		{

		}
		public void onMouseDown(object sender, MouseButtonEventArgs e)
		{
			Debug.WriteLine (sender.ToString ());
		}

	}
}