improve startup with deferred scan

internal/cli/cli.go

@@ -66,13 +66,6 @@ func (cli *CLI) RunE(cmd *cobra.Command, rootDirs []string) error {
 		return errors.New("at least one extension required")
 	}
 
-	files, err := cli.db.MultiScan(rootDirs...)
-	if err != nil {
-		return err
-	}
-
-	cli.db.Import(files.WithExtensions(extensions...))
-
 	router := mux.NewRouter()
 	router.Use(middlewares.NewCorsOrigin("*").Middleware)
 	router.Use(mux.CORSMethodMiddleware(router))
@@ -91,11 +84,23 @@ func (cli *CLI) RunE(cmd *cobra.Command, rootDirs []string) error {
 	srv.ConfigureStaticAssets(router)
 
 	errch := make(chan error)
+
+	// Start HTTP server
 	go func() {
 		addr := net.JoinHostPort(host, strconv.Itoa(port))
 		errch <- http.ListenAndServe(addr, router)
 	}()
 
+	// Initial scan of root directories
+	go func() {
+		files, err := cli.db.MultiScan(rootDirs...)
+		if err != nil {
+			errch <- err
+		}
+
+		cli.db.Import(files.WithExtensions(extensions...))
+	}()
+
 	cli.log.Info().Int("port", port).Msg("Listening for HTTP connections")
 	return <-errch
 }