package main

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

func sendJSON(w http.ResponseWriter, jsonMessage interface{}) {
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(jsonMessage)
}

func sendError(w http.ResponseWriter, err YggError) {
	w.WriteHeader(err.Code)
	sendJSON(w, err)
}

func unmarshalTo(r *http.Request, v any) error {
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return err
	}
	err = json.Unmarshal(body, &v)
	if err != nil {
		return err
	}
	return nil
}

func handleError(w http.ResponseWriter, err error) {
	switch err.Error() {
	case "unexpected end of JSON input":
		sendError(w, YggError{Code: 400, Error: "Bad Request", ErrorMessage: "The request data is malformed."})
	default:
		sendError(w, YggError{Code: 500, Error: "Unspecified error", ErrorMessage: "An error has occured handling your request."})
	}
	log.Println("error processing:", err)
}

func sendEmpty(w http.ResponseWriter) {
	w.WriteHeader(http.StatusNoContent)
}