using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CustomComponents
{
	public partial class ListBoxObjects : UserControl
	{
		private string LayoutString;
		private string StartS;
		private string EndS;
		private int SelectedStr;
		public ListBoxObjects()
		{
			InitializeComponent();
		}
		public int SelectedIndex {
			get { 
			if (listBox.SelectedIndex == -1) 
				{
					return -1;
				} 
			return listBox.SelectedIndex;
			}
			set 
			{ 
			if(listBox.Items.Count != 0)
				{
					listBox.SelectedIndex = value;
				}
			}
		}
		public void SetLayout(string layoutString, string startS, string endS)
		{
			if (layoutString == null || startS == null || endS == null) return;
			LayoutString = layoutString;
			StartS = startS;
			EndS = endS;
		}
		public void AddItemInList<T>(T Object)
		{
			if (Object == null)
			{
				throw new ArgumentNullException();
			}
			if (!LayoutString.Contains(StartS) && !LayoutString.Contains(EndS))
			{
				return;
			}
			string str = LayoutString;

			foreach (var prop in Object.GetType().GetProperties())
			{
				string str1 = $"{StartS}" + prop.Name + $"{EndS}";
				str = str.Replace(str1, $"{StartS}" + prop.GetValue(Object).ToString() + $"{EndS}");
			}
			listBox.Items.Add(str);
		}

		public T GetItemFromList<T>() where T : class, new()
		{
			string SelectedStr = "";
			if (listBox.SelectedIndex != -1)
			{
				SelectedStr = listBox.SelectedItem.ToString();
			}

			T currentObject = new T();

			foreach (var prop in typeof(T).GetProperties())
			{
				if (!prop.CanWrite) 
				{
					continue;
				}
				int startS = SelectedStr.IndexOf(StartS);
				int endS = SelectedStr.IndexOf(EndS);
				if (startS == -1 || endS == -1)
				{
					break;
				}
				string propValue = SelectedStr.Substring(startS + 1, endS - startS - 1);
				SelectedStr = SelectedStr.Substring(endS + 1);
				prop.SetValue(currentObject, Convert.ChangeType(propValue, prop.PropertyType));
			}
			return currentObject;
		}
	}
}