package main

import (
	"net/http"

	"github.com/google/uuid"
)

type createHandler int
type showHandler int
type deleteHandler int

func (a createHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	uuid := uuid.New().String()
	cookie := &http.Cookie{Name: "keks", Value: uuid}
	http.SetCookie(w, cookie)
	w.Write([]byte("Cookie erstellt!"))
}

func (b showHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	cookie, err := r.Cookie("keks")
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	w.Write([]byte("Keks Wert: " + cookie.Value))
}

func (b deleteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	cookie, err := r.Cookie("keks")
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	cookie.MaxAge = -1
	http.SetCookie(w, cookie)
	w.Write([]byte("Keks gelöscht"))
}

func main() {
	var a createHandler
	var b showHandler
	var c deleteHandler
	mux := http.NewServeMux()
	mux.Handle("/create-cookie", a)
	mux.Handle("/show-cookie", b)
	mux.Handle("/delete-cookie", c)
	http.ListenAndServe("localhost:8080", mux)
}