/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: UnixIO.cpp
    Date: 2022-4-12
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "UnixIO.hpp"
#include "FDIpcServer.hpp"

namespace Aurora::IO::UNIX
{
    AUKN_SYM AuString ShareFileDescriptor(int fd)
    {
        IPC::IPCToken token;
        IPC::IPCHandle handle;

        if (!FDServe(fd, token))
        {
            return {};
        }

        handle.PushId(IPC::EIPCHandleType::eIPCSharedFd, token);

        return handle.ToString();
    }

    AUKN_SYM void ShareFileDescriptorStop(const AuString &handle)
    {
        IPC::IPCHandle handle2;
        if (!handle2.FromString(handle))
        {
            SysPushErrorIO("Invalid handle string");
            return;
        }

        if (auto val = handle2.GetToken(IPC::EIPCHandleType::eIPCSharedFd, 0))
        {
            FDServeEnd(val->token);
        }
    }

    AUKN_SYM int ShareFileDescriptorAccept(const AuString &handle)
    {
        IPC::IPCHandle handle2;
        if (!handle2.FromString(handle))
        {
            SysPushErrorIO("Invalid handle string");
            return -1;
        }

        auto val = handle2.GetToken(IPC::EIPCHandleType::eIPCSharedFd, 0);
        if (!val)
        {
            return -1;
        }

        int fd {-1};
        if (!FDAccept(val->token, fd))
        {
            SysPushErrorNested();
            return -1;
        }

        return fd;
    }

    void InitUnixIO()
    {
        InitIPCBackend();
    }

    void DeinitUnixIO()
    {
        DeinitIPCBackend();
    }
}