package config

import (
	"fmt"
	"os"
	"time"
)

const TimeFormat = "2006-01-02/15:04:05"

const BufSize = 1024

const IoTimeout = 5 * time.Second

func GetSystemSocketPath() string {
	return "/run/tunnel/socket"
}

func getuid() int {
	uid := os.Getuid()
	if uid < 0 {
		panic("os.Getuid() returns negative uid")
	}
	return uid
}

func runAsRoot() bool {
	uid := os.Getuid()
	if uid < 0 {
		panic("os.Getuid() returns negative uid")
	}
	return uid == 0
}

func GetSocketPath() string {
	if uid := getuid(); uid == 0 {
		return GetSystemSocketPath()
	} else {
		return fmt.Sprintf("/run/user/%d/tunnel/socket", uid)
	}
}

func GetConfigPath() string {
	if uid := getuid(); uid == 0 {
		return "/etc/tunnel.conf"
	} else if s, err := os.UserConfigDir(); err == nil {
		return s + "/tunnel/config"
	} else {
		return ""
	}
}