package main

import (
	"crypto/rand"
	"flag"
	"log"
	"net"
	"net/http"
	"os"
	"time"

	"forgejo.gwairfelin.com/max/gonotes/internal/conf"
	"forgejo.gwairfelin.com/max/gonotes/internal/middleware"
	"forgejo.gwairfelin.com/max/gonotes/internal/notes/views"
)

func main() {
	var confFile string

	cache := make(map[string]string, 20)

	flag.StringVar(&confFile, "c", "/etc/gonotes/conf.toml", "Specify path to config file.")
	flag.Parse()

	conf.LoadConfig(confFile)

	log.SetOutput(os.Stdout)

	router := http.NewServeMux()
	notesRouter := views.GetRoutes("/notes")

	cacheExpiration, err := time.ParseDuration("24h")
	if err != nil {
		log.Fatal(err)
	}

	etag := middleware.NewETag("static", cacheExpiration)

	if !conf.Conf.Production {
		router.HandleFunc("/login/", func(w http.ResponseWriter, r *http.Request) {
			user := r.FormValue("user")
			log.Printf("Trying to log in %s", user)

			sessionID := rand.Text()
			cache[sessionID] = user

			cookie := http.Cookie{
				Name: "id", Value: sessionID, MaxAge: 3600,
				Secure: true, HttpOnly: true, Path: "/",
			}
			http.SetCookie(w, &cookie)
			http.Redirect(w, r, "/notes/", http.StatusFound)
		})
	}

	router.Handle("/", middleware.LoggingMiddleware(http.RedirectHandler("/notes/", http.StatusFound)))
	router.Handle("/notes/", middleware.SessionMiddleware(cache, middleware.LoggingMiddleware(http.StripPrefix("/notes", notesRouter))))
	router.Handle(
		"/static/",
		middleware.LoggingMiddleware(
			middleware.StaticEtagMiddleware(
				*etag,
				http.FileServer(http.FS(conf.Static)),
			),
		),
	)

	listener, err := net.Listen(conf.Conf.Protocol, conf.Conf.Address)
	if err != nil {
		log.Fatal(err)
	}
	log.Fatal(http.Serve(listener, router))
}