A basic webserver in Go, including a route table loaded from a subpackage

main.go

package main

import (
  "fmt"
	"github.com/gorilla/mux"
	"html/template"
	"mywebsite/api"
	"log"
	"net/http"
	"os"
)

func defaultHandler(w http.ResponseWriter, h *http.Request) {
	t, err := template.ParseFiles("templates/index.html")
	if err != nil {
		panic("Couldn't parse the template file")
	}
	t.Execute(w, nil)
}

func aboutHandler(w http.ResponseWriter, h *http.Request) {
	fmt.Fprint(w, "About this website")
}

func Log(handler http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		remoteAddr := r.RemoteAddr
		if len(remoteAddr) == 0 {
			remoteAddr = r.Header.Get("x-forwarded-for")
		}
		log.Printf("%s %s %s", r.RemoteAddr, r.Method, r.URL)
		handler.ServeHTTP(w, r)
	})
}

func main() {
	// Set up the site's routes
	r := mux.NewRouter()
	r.HandleFunc("/", defaultHandler)
	r.HandleFunc("/about", aboutHandler)
	// Register the API routes and attach them to "/api"
	apiRouter := r.PathPrefix("/api").Subrouter()
	api.RegisterRoutes(apiRouter)

	port := os.Getenv("PORT")
	if len(port) == 0 {
		port = "8080"
	}

	http.Handle("/", r)
	http.Handle("/static/",
		http.StripPrefix("/static", http.FileServer(http.Dir("./static"))))

	log.Printf("[+] Starting Application...")
	

routes.go

package api

import (
  "fmt"
	"github.com/gorilla/mux"
	"net/http"
)

func defaultHandler(w http.ResponseWriter, h *http.Request) {
	fmt.Fprint(w, "API Documentation will be coming at a later date")
}

func pingHandler(w http.ResponseWriter, h *http.Request) {
	// pingHandler returns the userName from the user's auth cookie
	fmt.Fprint(w, "ping")
}

func RegisterRoutes(r *mux.Router) {
	r.HandleFunc("/", defaultHandler)

	// The ping handler tests for whether or not the user is authenticated
	r.HandleFunc("/ping", RequireAuth(WhoAmI))

	// Authorization routes
	r.HandleFunc("/register", RegisterAccount).Methods("POST")
	r.HandleFunc("/auth", LogIn).Methods("POST")
	r.HandleFunc("/auth/logout", RequireAuth(LogOut))
	r.HandleFunc("/changepassword", RequireAuth(ChangePassword))
	r.HandleFunc("/forgotpassword", ForgotPassword)

	// Client handlers
	r.HandleFunc("/client", RequireAuth(Compress(GetClients))).Methods("GET")
	r.HandleFunc("/client", RequireAuth(AddClient)).Methods("POST")
	r.HandleFunc("/client/{id}", RequireAuth(Compress(GetClient))).Methods("GET")
	r.HandleFunc("/client/{id}", RequireAuth(UpdateClient)).Methods("POST")
	r.HandleFunc("/client/{id}", RequireAuth(DeleteClient)).Methods("DELETE")
	r.HandleFunc("/client/tagged/{tag}", RequireAuth(Compress(GetTaggedClients)))
}