utils

var (
	ExeName      string
	ExeBaseName  string
	ExePath      string
	ExePathHash  string
	ExeDirectory string
	UserHomeDir  = sync.OnceValue(func() string {
		homeDir, err := os.UserHomeDir()
		if err != nil {
			log.Fatal().Err(err).Msg("failed to get user home directory")
		}
		return homeDir
	})
	// ShareDirectory is the directory where the app stores its data in non-portable mode
	ShareDirectory = sync.OnceValue(func() string {
		return filepath.Join(UserHomeDir(), ".local/share/system-link")
	})
	PortableMode = sync.OnceValue(func() bool {

		return FileExists(filepath.Join(ExeDirectory, "config.yaml"))
	})
	ConfigPath = sync.OnceValue(func() string {

		if PortableMode() {
			return filepath.Join(ExeDirectory, "config.yaml")
		}

		if env := os.Getenv("SYSTEM_LINK_CONFIG"); env != "" {
			return env
		}

		return filepath.Join(UserHomeDir(), ".config/system-link/config.yaml")
	})
	ConfigDirectory = sync.OnceValue(func() string {
		return filepath.Dir(ConfigPath())
	})
	LogsPath = sync.OnceValue(func() string {

		if PortableMode() {
			return filepath.Join(ExeDirectory, ExeBaseName+".log")
		}
		logName := ExeBaseName + "." + ExePathHash + ".log"

		if env := os.Getenv("SYSTEM_LINK_LOGS_DIR"); env != "" {
			return filepath.Join(env, logName)
		}

		return filepath.Join(ShareDirectory(), logName)
	})
	LockPath = sync.OnceValue(func() string {
		if PortableMode() {
			return ExePath + ".lock"
		}
		lockName := ExeBaseName + "." + ExePathHash + ".lock"

		if env := os.Getenv("SYSTEM_LINK_LOCKS_DIR"); env != "" {
			return filepath.Join(env, lockName)
		}

		if env := os.Getenv("SYSTEM_LINK_LOGS_DIR"); env != "" {
			return filepath.Join(env, lockName)
		}

		return filepath.Join(ShareDirectory(), lockName)
	})
)