more refactor

api/Spa.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"embed"
+	"fmt"
+	"net/http"
+	"path"
+)
+
+//go:embed frontend/*
+var Frontend embed.FS
+
+func SpaHandler(fs http.FileSystem) http.Handler {
+	fileServer := http.FileServer(fs)
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == "POST" {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		fmt.Println("/frontend" + r.URL.Path)
+		r.URL.Path = "/frontend" + path.Clean(r.URL.Path)
+		if _, err := fs.Open(path.Clean(r.URL.Path)); err != nil {
+			r.URL.Path = "/"
+		}
+		fileServer.ServeHTTP(w, r)
+	})
+}