package main

import (
	"encoding/json"
	"net/http"
)

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, q *http.Request) {
		message := map[string]string{
			"message": "hello world",
		}
		jsonMessage, err := json.Marshal(message)
		if err != nil {
			panic(err.Error())
		}
		w.Write(jsonMessage)
	})
	http.ListenAndServe("127.0.0.1:3000", mux)
}