using System;
using System.Collections.Generic;
using System.Linq;

namespace Asb.Base.V2;

public class SysAuthenticatorServiceCache : SynchronizedKeyedCollection<Guid, SystemAuthenticationServiceAuthentication>
{
	private static readonly SysAuthenticatorServiceCache serviceConnections = new SysAuthenticatorServiceCache();

	private static readonly object serviceCacheLockObject = new object();

	private SysAuthenticatorServiceCache()
	{
	}

	public static IEnumerable<SystemAuthenticationServiceAuthentication> GetAllServiceAuthenticators()
	{
		return serviceConnections.Items.AsEnumerable();
	}

	public static void AddServiceAuthenticator(SystemAuthenticationServiceAuthentication serviceAuthenticator)
	{
		if (serviceAuthenticator == null)
		{
			return;
		}
		lock (serviceCacheLockObject)
		{
			if (!serviceConnections.Contains(serviceAuthenticator.ConnectionId))
			{
				serviceConnections.Add(serviceAuthenticator);
			}
		}
	}

	public static SystemAuthenticationServiceAuthentication GetServiceAuthenticator(Guid connectionId)
	{
		SystemAuthenticationServiceAuthentication result = null;
		lock (serviceCacheLockObject)
		{
			if (serviceConnections.Contains(connectionId))
			{
				result = serviceConnections[connectionId];
			}
		}
		return result;
	}

	public static SystemAuthenticationServiceAuthentication RemoveServiceAuthenticator(Guid connectionId)
	{
		SystemAuthenticationServiceAuthentication serviceAuthenticator = GetServiceAuthenticator(connectionId);
		if (serviceAuthenticator != null)
		{
			lock (serviceCacheLockObject)
			{
				serviceConnections.Remove(connectionId);
			}
		}
		return serviceAuthenticator;
	}

	protected override Guid GetKeyForItem(SystemAuthenticationServiceAuthentication item)
	{
		return item.ConnectionId;
	}
}