// SPDX-License-Identifier: MIT
/*
$info$
tags: LinuxSyscalls|syscalls-x86-64
$end_info$
*/

#include "LinuxSyscalls/FileManagement.h"
#include "LinuxSyscalls/Syscalls.h"
#include "LinuxSyscalls/x64/Syscalls.h"
#include "LinuxSyscalls/x64/Types.h"

#include <FEXCore/Utils/CompilerDefs.h>
#include <FEXCore/Utils/MathUtils.h>

#include <fcntl.h>
#include <poll.h>
#include <stdint.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/sendfile.h>
#include <sys/timerfd.h>
#include <syscall.h>
#include <time.h>
#include <unistd.h>

namespace FEX::HLE::x64 {
  void RegisterFD(FEX::HLE::SyscallHandler *Handler) {
    REGISTER_SYSCALL_IMPL_X64(poll, [](FEXCore::Core::CpuStateFrame *Frame, struct pollfd *fds, nfds_t nfds, int timeout) -> uint64_t {
      uint64_t Result = ::poll(fds, nfds, timeout);
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(select, [](FEXCore::Core::CpuStateFrame *Frame, int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout) -> uint64_t {
      uint64_t Result = ::select(nfds, readfds, writefds, exceptfds, timeout);
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(fcntl, [](FEXCore::Core::CpuStateFrame *Frame, int fd, int cmd, uint64_t arg) -> uint64_t {
      uint64_t Result{};
      switch (cmd) {
      case F_GETFL:
        Result = ::fcntl(fd, cmd, arg);
        if (Result != -1) {
          Result = FEX::HLE::RemapToX86Flags(Result);
        }
        break;
      case F_SETFL:
        Result = ::fcntl(fd, cmd, FEX::HLE::RemapFromX86Flags(arg));
        break;
      default:
        Result = ::fcntl(fd, cmd, arg);
        break;
      }
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(futimesat, [](FEXCore::Core::CpuStateFrame *Frame, int dirfd, const char *pathname, const struct timeval times[2]) -> uint64_t {
      uint64_t Result = ::syscall(SYSCALL_DEF(futimesat), dirfd, pathname, times);
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(stat, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, FEX::HLE::x64::guest_stat *buf) -> uint64_t {
      struct stat host_stat;
      uint64_t Result = FEX::HLE::_SyscallHandler->FM.Stat(pathname, &host_stat);
      if (Result != -1) {
        *buf = host_stat;
      }
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(fstat, [](FEXCore::Core::CpuStateFrame *Frame, int fd, FEX::HLE::x64::guest_stat *buf) -> uint64_t {
      struct stat host_stat;
      uint64_t Result = ::fstat(fd, &host_stat);
      if (Result != -1) {
        *buf = host_stat;
      }
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(lstat, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, FEX::HLE::x64::guest_stat *buf) -> uint64_t {
      struct stat host_stat;
      uint64_t Result = FEX::HLE::_SyscallHandler->FM.Lstat(path, &host_stat);
      if (Result != -1) {
        *buf = host_stat;
      }
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(newfstatat, [](FEXCore::Core::CpuStateFrame *Frame, int dirfd, const char *pathname, FEX::HLE::x64::guest_stat *buf, int flag) -> uint64_t {
      struct stat host_stat;
      uint64_t Result = FEX::HLE::_SyscallHandler->FM.NewFSStatAt(dirfd, pathname, &host_stat, flag);
      if (Result != -1) {
        *buf = host_stat;
      }
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(getdents, [](FEXCore::Core::CpuStateFrame *Frame, int fd, void *dirp, uint32_t count) -> uint64_t {
      return GetDentsEmulation<false>(fd, reinterpret_cast<FEX::HLE::x64::linux_dirent*>(dirp), count);
    });

    REGISTER_SYSCALL_IMPL_X64(dup2, [](FEXCore::Core::CpuStateFrame *Frame, int oldfd, int newfd) -> uint64_t {
      uint64_t Result = ::dup2(oldfd, newfd);
      SYSCALL_ERRNO();
    });

    REGISTER_SYSCALL_IMPL_X64(statfs, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, struct statfs *buf) -> uint64_t {
      uint64_t Result = FEX::HLE::_SyscallHandler->FM.Statfs(path, buf);
      SYSCALL_ERRNO();
    });
  }
}