using System;
using System.IO;
using System.Security.Permissions;
using System.Text;
using AspClassic.Scripting.Runtime;
using AspClassic.Scripting.Utils;

namespace AspClassic.Scripting.Hosting;

public sealed class ScriptIO : MarshalByRefObject
{
	private readonly SharedIO _io;

	public Stream InputStream => _io.InputStream;

	public Stream OutputStream => _io.OutputStream;

	public Stream ErrorStream => _io.ErrorStream;

	public TextReader InputReader => _io.InputReader;

	public TextWriter OutputWriter => _io.OutputWriter;

	public TextWriter ErrorWriter => _io.ErrorWriter;

	public Encoding InputEncoding => _io.InputEncoding;

	public Encoding OutputEncoding => _io.OutputEncoding;

	public Encoding ErrorEncoding => _io.ErrorEncoding;

	internal SharedIO SharedIO => _io;

	internal ScriptIO(SharedIO io)
	{
		_io = io;
	}

	public void SetOutput(Stream stream, Encoding encoding)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(encoding, "encoding");
		_io.SetOutput(stream, new StreamWriter(stream, encoding));
	}

	public void SetOutput(Stream stream, TextWriter writer)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(writer, "writer");
		_io.SetOutput(stream, writer);
	}

	public void SetErrorOutput(Stream stream, Encoding encoding)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(encoding, "encoding");
		_io.SetErrorOutput(stream, new StreamWriter(stream, encoding));
	}

	public void SetErrorOutput(Stream stream, TextWriter writer)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(writer, "writer");
		_io.SetErrorOutput(stream, writer);
	}

	public void SetInput(Stream stream, Encoding encoding)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(encoding, "encoding");
		_io.SetInput(stream, new StreamReader(stream, encoding), encoding);
	}

	public void SetInput(Stream stream, TextReader reader, Encoding encoding)
	{
		ContractUtils.RequiresNotNull(stream, "stream");
		ContractUtils.RequiresNotNull(reader, "writer");
		ContractUtils.RequiresNotNull(encoding, "encoding");
		_io.SetInput(stream, reader, encoding);
	}

	public void RedirectToConsole()
	{
		_io.RedirectToConsole();
	}

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