refactor: handle purge command

cmd/cli/purge/purge.go

@@ -19,6 +19,8 @@ and usage of using your command. For example:
 Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
+	SilenceUsage:  true,
+	SilenceErrors: true,
 	PreRunE: func(cmd *cobra.Command, args []string) error {
 		if len(args) > 0 {
 			return utils.ErrTooManyArgs
@@ -37,7 +39,7 @@ to quickly create a Cobra application.`,
 		if err != nil {
 			logger.Error().Str("command", cmd.Name()).Err(err).Msg(constants.FailedToProcessCommand)
 
-			return &utils.CommandError{Err: err, Code: 10}
+			return &utils.CommandError{Err: err, Code: 12}
 		}
 
 		logger.Info().

internal/constants/errors.go

@@ -23,4 +23,5 @@ const (
 	FailedToInitializeIPC             = "failed to initialize IPC"
 	FailedToRemoveRouteEntry          = "failed to remove RouteEntry from state"
 	EntryAlreadyExists                = "route entry already exists in state"
+	NoRoutesToPurge                   = "no routes to purge"
 )

internal/ipc/ipc.go

@@ -192,6 +192,20 @@ func handleAddCommand(logger zerolog.Logger, gw string, domains []string, conn n
 func handlePurgeCommand(logger zerolog.Logger, conn net.Conn, st *state.State) {
 	logger = logger.With().Str("operation", "purge").Logger()
 
+	if len(st.Entries) == 0 {
+		if err := writeResponse(&DaemonResponse{
+			Success:  false,
+			Response: "",
+			Error:    errors.New(constants.NoRoutesToPurge).Error(),
+		}, conn); err != nil {
+			logger.Error().
+				Err(err).
+				Msg(constants.FailedToWriteToUnixDomainSocket)
+		}
+
+		return
+	}
+
 	for _, entry := range st.Entries {
 		for _, ip := range entry.ResolvedIPs {
 			if err := utils.RemoveRoute(ip); err != nil {