package main

import (
	"errors"
	"log"
	"net/http"
)

const (
	addr = ":8080"
)

/*
@app.route("/")
def index():
*/
func RouteIndex(w http.ResponseWriter, r *http.Request) {
	http.Redirect(w, r, "/contacts", http.StatusSeeOther)
}

func setupRoutes(mux *http.ServeMux) {
	mux.HandleFunc("/", RouteIndex)
	mux.Handle("/contacts", http.NotFoundHandler())
}

func main() {
	mux := http.NewServeMux()
	setupRoutes(mux)
	log.Printf("Listening on http://localhost%s", addr)
	if err := http.ListenAndServe(addr, mux); err != nil {
		if !errors.Is(err, http.ErrServerClosed) {
			log.Printf("Server error: %v\n", err)
			return
		}
	}
	log.Println("Server shutdown")
}