//go:build !windows

package pi

import (
	"errors"
	"os"
	"path/filepath"
)

// durableReplace acknowledges both the data file and its directory entry. A successful return
// is the strongest atomic replacement guarantee supported by Unix filesystems.
func durableReplace(temporary, target, directory string) error {
	if err := os.Rename(temporary, target); err != nil {
		return err
	}
	dir, err := os.Open(directory)
	if err != nil {
		return err
	}
	defer dir.Close()
	return dir.Sync()
}

func durableRemove(path string) error {
	if err := os.Remove(path); err != nil && !errors.Is(err, os.ErrNotExist) {
		return err
	}
	dir, err := os.Open(filepath.Dir(path))
	if err != nil {
		return err
	}
	defer dir.Close()
	return dir.Sync()
}