//go:build !windows

// for windows builds func [writable] should be refactored
package fs

import (
	"fmt"
	"os"

	"golang.org/x/sys/unix"
)

func dirExists(path string) (bool, error) {
	return pathExists(path, true)
}

func fileExists(path string) (bool, error) {
	return pathExists(path, false)
}

func pathExists(path string, isDir bool) (bool, error) {
	if fi, err := os.Stat(path); err != nil {
		if os.IsNotExist(err) {
			return false, nil
		}
		return false, err
	} else {
		if isDir != fi.IsDir() {
			return false, fmt.Errorf("wrong type: "+path+" mode=%s isDir=%t", fi.Mode(), isDir)
		}
		return true, nil
	}
}

func writable(filepath string) (bool, error) {
	return unix.Access(filepath, unix.W_OK) == nil, nil
}