package main

import (
	"flag"
	"fmt"
	"github.com/gorilla/mux"
	"gitto.work/shortcut/enhancedfileserver"
	"log"
	"net/http"
)

type config struct {
	Listen   string
	Port     int
	Username string
	Password string
}

var c config

func init() {
	flag.StringVar(&c.Listen, "listen", "0.0.0.0", "IP address to listen.")
	flag.IntVar(&c.Port, "port", 8000, "Listen port for interface (ports below 1024 may require super user privileges)")
	flag.StringVar(&c.Username, "username", "", "Require this username tp access")
	flag.StringVar(&c.Password, "password", "", "Require this password to access interface")
	flag.Parse()
}

func main() {
	r := mux.NewRouter()
	r.Use(BasicAuth)
	r.Use(QueryLog)

	r.PathPrefix("/").Handler(http.StripPrefix("/", enhancedfileserver.FileServer(http.Dir("./"))))

	a := fmt.Sprintf("%s:%d", c.Listen, c.Port)

	log.Fatal(http.ListenAndServe(a, r))
}

func BasicAuth(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if c.Username != "" && c.Password != "" {
			user, pass, ok := r.BasicAuth()
			if !ok || user != c.Username || pass != c.Password {
				w.Header().Set("WWW-Authenticate", `Basic realm="mydomains"`)

				http.Error(w, "Unauthorized", http.StatusUnauthorized)
			}
		}

		next.ServeHTTP(w, r)

	})
}

func QueryLog(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		log.Printf("%s - %s", r.RemoteAddr, r.URL)
		next.ServeHTTP(w, r)
	})
}