package sys

import (
	"os"
	"runtime"
)

// HomeDir return user home directory
func HomeDir() string {
	if dirname, err := os.UserHomeDir(); err == nil {
		return dirname
	}
	return os.TempDir()
}

// HiddenFile get hidden file prefix
func HiddenFile(name string) string {
	switch runtime.GOOS {
	case "windows":
		return "~" + name
	default:
		return "." + name
	}
}

// CacheDir return user cache directory
func CacheDir() string {
	if dirname, err := os.UserCacheDir(); err == nil {
		return dirname
	}
	return os.TempDir()
}

func TempFile() (*os.File, error) {
	return os.CreateTemp(os.TempDir(), "kos_*")
}