//go:build !linux

package safefile

import (
	"fmt"
	"io"
	"os"
	"path/filepath"
)

func MkdirAll(path string, mode os.FileMode) error { return os.MkdirAll(path, mode) }
func OpenFile(path string, flags int, mode os.FileMode) (*os.File, error) {
	return os.OpenFile(path, flags, mode)
}
func Remove(path string) error { return os.Remove(path) }
func Write(path string, mode os.FileMode, write func(io.Writer) error) error {
	f, err := os.CreateTemp(filepath.Dir(path), ".carlos-write-*")
	if err != nil {
		return err
	}
	defer os.Remove(f.Name())
	defer f.Close()
	if err := write(f); err != nil {
		return err
	}
	if err := f.Chmod(mode); err != nil {
		return err
	}
	if err := f.Sync(); err != nil {
		return err
	}
	if err := f.Close(); err != nil {
		return err
	}
	return os.Rename(f.Name(), path)
}

func OpenDir(path string) (*os.File, error) {
	st, err := os.Lstat(path)
	if err != nil {
		return nil, err
	}
	if !st.IsDir() {
		return nil, fmt.Errorf("%s is not a directory", path)
	}
	f, err := os.Open(path)
	if err != nil {
		return nil, err
	}
	st, err = f.Stat()
	if err != nil {
		f.Close()
		return nil, err
	}
	if !st.IsDir() {
		f.Close()
		return nil, fmt.Errorf("%s is not a directory", path)
	}
	return f, nil
}