using Microsoft.Win32;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Utils;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Sarand.Net.Standard.Dbas.Base
{
	//=======================================================================
	public class SaDbDfnOdbcDriver
	{
		//-------------------------------------------------------------------
		// Data members.

		//-------------------------------------------------------------------
		// Construction.
		public SaDbDfnOdbcDriver(String name)
		{
			Name = name;
		}

		//-------------------------------------------------------------------
		// Properties.
		public String Name { get; }
		public Dictionary<String, String> Attributes { get; } = new Dictionary<String, String>();

		//-------------------------------------------------------------------
		// Utilities.
		/// <summary>Add 'Driver' attribute from registry. Fails if driver name not found.</summary>
		public bool AddDriverConfig()
		{
			if (StringUtil.IsEmpty(Name)) return false;
			try
			{
#pragma warning disable CA1416
				// Retrieve 'Driver' (location of DLL) parameter for this driver:
				using (RegistryKey localMachineHive = Registry.LocalMachine)
				using (RegistryKey odbcDriverKey = localMachineHive.OpenSubKey(@"SOFTWARE\ODBC\ODBCINST.INI\" + Name))
				{
					if (odbcDriverKey != null)
					{
						object driverName = odbcDriverKey.GetValue("Driver");
						if (driverName != null && driverName is String)
							Attributes["Driver"] = driverName.ToString();
					}
					return true;
				}
#pragma warning restore CA1416
			}
			catch (Exception) { }
			return true;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}