Switch to structured error

Author: MatteoPologruto

commands/cmderrors/cmderrors.go

@@ -212,6 +212,20 @@ func (e *UnknownProfileError) GRPCStatus() *status.Status {
 	return status.New(codes.NotFound, e.Error())
 }
 
+// DuplicateProfileError is returned when the profile is a duplicate of an already existing one
+type DuplicateProfileError struct {
+	Profile string
+}
+
+func (e *DuplicateProfileError) Error() string {
+	return i18n.Tr("Profile '%s' already exists", e.Profile)
+}
+
+// GRPCStatus converts the error into a *status.Status
+func (e *DuplicateProfileError) GRPCStatus() *status.Status {
+	return status.New(codes.NotFound, e.Error())
+}
+
 // InvalidProfileError is returned when the profile has errors
 type InvalidProfileError struct {
 	Cause error

commands/service_profile_init.go

@@ -57,7 +57,7 @@ func (s *arduinoCoreServerImpl) InitProfile(ctx context.Context, req *rpc.InitPr
 
 		// Check that the profile name is unique
 		if profile, _ := sk.GetProfile(req.ProfileName); profile != nil {
-			return nil, fmt.Errorf("%s: the profile already exists", req.ProfileName)
+			return nil, &cmderrors.DuplicateProfileError{Profile: req.ProfileName}
 		}
 
 		pme, release, err := instances.GetPackageManagerExplorer(req.GetInstance())