package main

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

func respondWithError(w http.ResponseWriter, code int, msg string) {
	if code / 100 == 5 {
		log.Println("Responding with 5XX error:", msg)
	}

	type ErrorResponse struct {
		Error string `json:"error"`
	}

	respondWithJSON(w, code, ErrorResponse{ Error: msg })
}

func respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
	dat, err := json.Marshal(payload)
	if err != nil {
		log.Printf("Failed to marshal JSON response: %v\n", payload)
		w.WriteHeader(500)
		return
	}

	w.Header().Add("Content-Type", "application/json");
	w.WriteHeader(code);
	w.Write(dat)
}