code refactor: tidy-up

scanner/scanner.go

@@ -42,6 +42,28 @@ type (
 
 const METADATA_FILENAME = "metadata.toml"
 
+func InitialiseDirectory(directory string) error {
+	dirInfo, err := os.Stat(directory)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return fmt.Errorf("no such directory: %s", directory)
+		}
+		return fmt.Errorf("failed to open directory: %v", err)
+	}
+	if !dirInfo.IsDir() {
+		return fmt.Errorf("not a directory: %s", directory)
+	}
+
+	_, err = os.Stat(path.Join(directory, METADATA_FILENAME))
+	if err == nil {
+		return fmt.Errorf("directory already initialised: %s", directory)
+	}
+
+	err = WriteMetadata(directory, DefaultMetadata())
+
+	return err
+}
+
 func ScanSegments(directory string, extension string) ([]string, error) {
 	entries, err := os.ReadDir(directory)
 	if err != nil {