barcodes/web/root.route.go

package web

import (
	"fmt"
	"html/template"
	"net/http"
	"os"
)

func rootHandler(w http.ResponseWriter, r *http.Request) {
	path := r.URL.Path
	if path == "/" {
		path = "/index"
	}

	templatePath := "templates" + path + ".html"
	if _, err := os.Stat(templatePath); err == nil {
		tmpl, err := template.ParseFiles("./templates/base.html", "./"+templatePath)
		if err != nil {
			fmt.Println("Error parsing template: ", err)
			http.Error(w, "Error parsing template", http.StatusInternalServerError)
			return
		}
		tmpl.Execute(w, nil)
		return
	}

	staticPath := "static" + path
	if _, err := os.Stat(staticPath); err == nil {
		http.ServeFile(w, r, staticPath)
		return
	}

	// Return a 404 if the file does not exist in either directory.
	http.NotFound(w, r)
}