using System;
using System.Security.Permissions;

namespace AspClassic.Scripting.Hosting;

public class ScriptHost : MarshalByRefObject
{
	private ScriptRuntime _runtime;

	public ScriptRuntime Runtime
	{
		get
		{
			if (_runtime == null)
			{
				throw new InvalidOperationException("Host not initialized");
			}
			return _runtime;
		}
	}

	public virtual PlatformAdaptationLayer PlatformAdaptationLayer => PlatformAdaptationLayer.Default;

	internal void SetRuntime(ScriptRuntime runtime)
	{
		_runtime = runtime;
		RuntimeAttached();
	}

	protected virtual void RuntimeAttached()
	{
	}

	protected internal virtual void EngineCreated(ScriptEngine engine)
	{
	}

	[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.Infrastructure)]
	public override object InitializeLifetimeService()
	{
		return null;
	}
}