feat: server playground

server/cmd/marka-server/main.go

@@ -24,8 +24,21 @@ func main() {
 	var roots multi
 	flag.Var(&roots, "root", "repeatable; specify multiple -root flags")
 	addr := flag.String("addr", ":8080", "listen address")
+	playgroundRoot := flag.String("playground-root", "", "path to playground build directory")
 	flag.Parse()
 
+	if *playgroundRoot != "" {
+		absPlaygroundRoot, err := filepath.Abs(*playgroundRoot)
+		must(err)
+		info, err := os.Stat(absPlaygroundRoot)
+		must(err)
+		if !info.IsDir() {
+			log.Fatalf("playground-root %s is not a directory", *playgroundRoot)
+		}
+		log.Printf("serving playground from %s", absPlaygroundRoot)
+		http.Handle("/_playground/", http.StripPrefix("/_playground/", http.FileServer(http.Dir(absPlaygroundRoot))))
+	}
+
 	if len(roots) == 0 {
 		log.Fatal("at least one -root flag must be specified")
 	}