server.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
	"path/filepath"

	"github.com/gorilla/mux"
)

type spaHandler struct {
	staticPath string
	indexPath  string
}

func (h spaHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Println(r.URL.Path)
	if (r.URL.Path == "/VirtualDOM/VirtualDOM") {
		fmt.Println("!!!!!!!!!!!!");
		r.URL.Path = "/VirtualDOM/VirtualDOM.js"
	}
	path, err := filepath.Abs(r.URL.Path)
	
	fmt.Println(path ,err)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	path = filepath.Join(h.staticPath, path)
	_, err = os.Stat(path)
	if os.IsNotExist(err) {
		http.ServeFile(w, r, filepath.Join(h.staticPath, h.indexPath))
		return
	} else if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	http.FileServer(http.Dir(h.staticPath)).ServeHTTP(w, r)
}

func main() {
	mux := mux.NewRouter()

	spa := spaHandler{staticPath: "public", indexPath: "index.html"}
	mux.PathPrefix("/").Handler(spa)

	srv := &http.Server{
		Handler: mux,
		Addr:         ":80",
		WriteTimeout: http.DefaultClient.Timeout,
		ReadTimeout:  http.DefaultClient.Timeout,
	}

	// log.Fatal(srv.ListenAndServe())
	log.Fatal(srv.ListenAndServe())
}