using System.Text.RegularExpressions;
using ToolTip = System.Windows.Forms.ToolTip;

namespace CustomComponents
{
	public partial class DateTextBox : UserControl
	{

		private string? pattern;

		private string example = "22.09.2023";
		public DateTextBox()
		{
			InitializeComponent();
		}

		public string? Pattern
		{
			get { return pattern; }
			set { pattern = value; }
		}

		public string? TextBoxValue
		{
			get
			{
				if (pattern == null) 
				{ 
					Error = "pattern is null";
					return null; 
				}
				Regex regex = new Regex(Pattern);
				bool isValid = regex.IsMatch(textBox.Text);
				if (isValid)
				{
					return textBox.Text;
				}
				else
				{
					Error = "Uncorrect";
					return null;
				}
			}
			set
			{
				Regex regex = new Regex(Pattern);
				bool isValid = regex.IsMatch(value);
				if (isValid)
				{
					textBox.Text = value;
				}
				else
				{
					Error = "Uncorrect";
				}
			}
		}

		public string Error { get; private set; }

		public void setExample(string str)
		{
			Regex regex = new Regex(Pattern);
			bool isValid = regex.IsMatch(str);
			if (isValid)
			{
				example = str;
			}

		}

		private void textBox_Enter(object sender, EventArgs e)
		{
			int VisibleTime = 3000;

			ToolTip tt = new ToolTip();
			tt.Show(example, textBox, 30, -20, VisibleTime);
		}

		private EventHandler _explicitEvent;

		public event EventHandler ExplicitEvent
		{
			add
			{
				_explicitEvent += value;
			}
			remove
			{
				_explicitEvent -= value;
			}
		}

		private void textBox_TextChanged(object sender, EventArgs e)
		{
			_explicitEvent?.Invoke(sender, e);
		}
	}
}