json.go

package main

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

func respondWithError(w http.ResponseWriter, code int, msg string, logErr error) {
	if logErr != nil {
		log.Printf("internal error: %v", logErr) // avoid raw prints
	}

	if code >= 500 {
		log.Printf("Responding with 5XX error: %s", msg)
	}

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

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

func respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
	w.Header().Set("Content-Type", "application/json")

	dat, err := json.Marshal(payload)
	if err != nil {
		log.Printf("error marshalling JSON: %v", err)
		http.Error(w, "internal server error", http.StatusInternalServerError)
		return
	}

	w.WriteHeader(code)

	// ✅ FIX: handle write error (G104)
	if _, err := w.Write(dat); err != nil {
		log.Printf("failed to write response: %v", err)
	}
}