wip: Some changes

internal/utils/kustomize/kustomize.go

@@ -134,23 +134,42 @@ func Generate(path string, gh githelper.Githelper) error {
 		},
 		ConfigMapGenerator: kustomize.CmGeneratorFromFiles(),
 	}
+
 	if len(kustomize.Secrets) > 0 {
 		kustomization.Generators = []string{"sec-generator.yaml"}
 		if err := kustomize.SecGeneratorCreate(path); err != nil {
 			return err
 		}
-
+	} else {
+		if err := os.RemoveAll(fmt.Sprintf("%s/sec-generator.yaml", path)); err != nil {
+			return err
+		}
 	}
+
 	manifest, err := yaml.Marshal(kustomization)
 	if err != nil {
 		return err
 	}
-	file, err := os.Create(path + "/kustomization.yaml")
-	if err != nil {
+	dstFilePath := path + "/kustomization.yaml"
+	var dstFile *os.File
+	if _, err = os.Stat(dstFilePath); err == nil {
+		dstFile, err = os.Open(dstFilePath)
+		if err != nil {
+			return err
+		}
+		defer dstFile.Close()
+	} else if errors.Is(err, os.ErrNotExist) {
+		dstFile, err = os.Create(dstFilePath)
+		if err != nil {
+			return nil
+		}
+		defer dstFile.Close()
+	} else {
 		return err
 	}
-	if _, err := file.Write(manifest); err != nil {
-		return err
+
+	if err := os.WriteFile(dstFilePath, manifest, os.ModeExclusive); err != nil {
+		return nil
 	}
 
 	if err := gh.AddAllAndCommit(path, "Update the root kustomization"); err != nil {