package main

import (
	"crypto/rand"
	"fmt"
	"log"
	"net/http"

	"github.com/gorilla/sessions"
)

const ADDRESS = "127.0.0.1"
const PORT = "8080"

type Server struct {
	Users    map[string]UserData
	Sessions *sessions.CookieStore
}

func main() {
	// Set up encryption for session tokens
	fmt.Print("Generating encryption key... ")
	secret := make([]byte, 32)
	_, err := rand.Read(secret)
	if err != nil {
		fmt.Println("Error generating key:")
		log.Fatal(err)
		return
	}
	fmt.Println("Done!")
	// Create server object
	server := Server{
		Users:    make(map[string]UserData),
		Sessions: sessions.NewCookieStore(secret),
	}
	// Host static files
	static_files := http.FileServer(http.Dir("static/"))
	http.Handle("/", static_files)
	// Response generated by code
	http.HandleFunc("/handle-register", server.handle_register)
	http.HandleFunc("/handle-login", server.handle_login)

	// Start web server at 127.0.0.1:8080
	fmt.Printf("Listening to %s on port %s...\n", ADDRESS, PORT)
	e := http.ListenAndServe(ADDRESS+":"+PORT, nil)
	// Print any errors
	if e != nil {
		fmt.Println("Error starting server:")
		log.Fatal(e)
	}
}