fix: better error handling & proper context deletion for server rm

cli/internal/validate.go

@@ -185,12 +185,12 @@ func ValidateSubCmdFlags(c *cli.Context) bool {
 }
 
 // ValidateServer ensures the server name arg is valid.
-func ValidateServer(c *cli.Context) (string, error) {
+func ValidateServer(c *cli.Context) string {
 	serverName := c.Args().First()
 
 	serverNames, err := config.ReadServerNames()
 	if err != nil {
-		return serverName, err
+		logrus.Fatal(err)
 	}
 
 	if serverName == "" && !NoInput {
@@ -199,17 +199,28 @@ func ValidateServer(c *cli.Context) (string, error) {
 			Options: serverNames,
 		}
 		if err := survey.AskOne(prompt, &serverName); err != nil {
-			return serverName, err
+			logrus.Fatal(err)
 		}
 	}
 
+	matched := false
+	for _, name := range serverNames {
+		if name == serverName {
+			matched = true
+		}
+	}
+
+	if !matched {
+		ShowSubcommandHelpAndError(c, errors.New("server doesn't exist?"))
+	}
+
 	if serverName == "" {
 		ShowSubcommandHelpAndError(c, errors.New("no server provided"))
 	}
 
 	logrus.Debugf("validated %s as server argument", serverName)
 
-	return serverName, nil
+	return serverName
 }
 
 // EnsureDNSProvider ensures a DNS provider is chosen.