[management, client] Add logout feature (#4268)

client/cmd/logout.go

@@ -0,0 +1,57 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os/user"
+	"time"
+
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var logoutCmd = &cobra.Command{
+	Use:   "logout",
+	Short: "logout from the Netbird Management Service and delete peer",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*7)
+		defer cancel()
+
+		conn, err := DialClientGRPCServer(ctx, daemonAddr)
+		if err != nil {
+			return fmt.Errorf("connect to daemon: %v", err)
+		}
+		defer conn.Close()
+
+		daemonClient := proto.NewDaemonServiceClient(conn)
+
+		req := &proto.LogoutRequest{}
+
+		if profileName != "" {
+			req.ProfileName = &profileName
+
+			currUser, err := user.Current()
+			if err != nil {
+				return fmt.Errorf("get current user: %v", err)
+			}
+			username := currUser.Username
+			req.Username = &username
+		}
+
+		if _, err := daemonClient.Logout(ctx, req); err != nil {
+			return fmt.Errorf("logout: %v", err)
+		}
+
+		cmd.Println("Logged out successfully")
+		return nil
+	},
+}
+
+func init() {
+	logoutCmd.PersistentFlags().StringVar(&profileName, profileNameFlag, "", profileNameDesc)
+}