// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace Microsoft.AspNetCore.Server.IIS.Core;
 
internal sealed class HttpUpgradeStream : Stream
{
    private readonly Stream _requestStream;
    private readonly Stream _responseStream;
 
    public HttpUpgradeStream(Stream requestStream, Stream responseStream)
    {
        _requestStream = requestStream;
        _responseStream = responseStream;
    }
 
    public override bool CanRead
    {
        get
        {
            return _requestStream.CanRead;
        }
    }
 
    public override bool CanSeek
    {
        get
        {
            return _requestStream.CanSeek;
        }
    }
 
    public override bool CanTimeout
    {
        get
        {
            return _responseStream.CanTimeout || _requestStream.CanTimeout;
        }
    }
 
    public override bool CanWrite
    {
        get
        {
            return _responseStream.CanWrite;
        }
    }
 
    public override long Length
    {
        get
        {
            return _requestStream.Length;
        }
    }
 
    public override long Position
    {
        get
        {
            return _requestStream.Position;
        }
        set
        {
            _requestStream.Position = value;
        }
    }
 
    public override int ReadTimeout
    {
        get
        {
            return _requestStream.ReadTimeout;
        }
        set
        {
            _requestStream.ReadTimeout = value;
        }
    }
 
    public override int WriteTimeout
    {
        get
        {
            return _responseStream.WriteTimeout;
        }
        set
        {
            _responseStream.WriteTimeout = value;
        }
    }
 
    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            _requestStream.Dispose();
            _responseStream.Dispose();
        }
    }
 
    public override void Flush()
    {
        _responseStream.Flush();
    }
 
    public override Task FlushAsync(CancellationToken cancellationToken)
    {
        return _responseStream.FlushAsync(cancellationToken);
    }
 
    public override void Close()
    {
        _requestStream.Close();
        _responseStream.Close();
    }
 
    public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback? callback, object? state)
    {
        return _requestStream.BeginRead(buffer, offset, count, callback, state);
    }
 
    public override int EndRead(IAsyncResult asyncResult)
    {
        return _requestStream.EndRead(asyncResult);
    }
 
    public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback? callback, object? state)
    {
        return _responseStream.BeginWrite(buffer, offset, count, callback, state);
    }
 
    public override void EndWrite(IAsyncResult asyncResult)
    {
        _responseStream.EndWrite(asyncResult);
    }
 
    public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
    {
        return _requestStream.ReadAsync(buffer, offset, count, cancellationToken);
    }
 
    public override ValueTask<int> ReadAsync(Memory<byte> destination, CancellationToken cancellationToken = default)
    {
        return _requestStream.ReadAsync(destination, cancellationToken);
    }
 
    public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
    {
        return _requestStream.CopyToAsync(destination, bufferSize, cancellationToken);
    }
 
    public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
    {
        return _responseStream.WriteAsync(buffer, offset, count, cancellationToken);
    }
 
    public override ValueTask WriteAsync(ReadOnlyMemory<byte> source, CancellationToken cancellationToken = default)
    {
        return _responseStream.WriteAsync(source, cancellationToken);
    }
 
    public override long Seek(long offset, SeekOrigin origin)
    {
        return _requestStream.Seek(offset, origin);
    }
 
    public override void SetLength(long value)
    {
        _requestStream.SetLength(value);
    }
 
    public override int Read(byte[] buffer, int offset, int count)
    {
        return _requestStream.Read(buffer, offset, count);
    }
 
    public override int ReadByte()
    {
        return _requestStream.ReadByte();
    }
 
    public override void Write(byte[] buffer, int offset, int count)
    {
        _responseStream.Write(buffer, offset, count);
    }
 
    public override void WriteByte(byte value)
    {
        _responseStream.WriteByte(value);
    }
}