FEX-Emu--FEX/Source/Tools/LinuxEmulation/LinuxSyscalls/NetStream.h

// SPDX-License-Identifier: MIT
#pragma once

#include <FEXCore/Utils/CompilerDefs.h>
#include <FEXCore/fextl/string.h>
#include <FEXCore/fextl/vector.h>

#include <optional>
#include <variant>

namespace FEX::Utils {
class NetStream final {
public:
  NetStream();

  void OpenSocket(int _socketfd) {
    socketfd = _socketfd;
  }

  void InvalidateSocket() {
    socketfd = -1;
  }

  bool HasSocket() const {
    return socketfd != -1;
  }

  struct ReturnGet final : public std::variant<char, bool> {
    bool HasHangup() const {
      return std::holds_alternative<bool>(*this) && std::get<bool>(*this);
    }
    bool HasData() const {
      return std::holds_alternative<char>(*this);
    }
    char GetData() const {
      return std::get<char>(*this);
    }
  };

  ReturnGet get();
  size_t read(char* buf, size_t size, bool ContinueOnInterrupt);

  void InterruptReader();

  bool SendPacket(const fextl::string& packet);
private:
  int socketfd {-1};
  int eventfd {-1};
  size_t read_offset {};
  size_t receive_offset {};
  fextl::vector<char> receive_buffer;
};
} // namespace FEX::Utils