package handlers

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

func writeJSON(w http.ResponseWriter, v any) {
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	enc := json.NewEncoder(w)
	enc.SetEscapeHTML(false)
	_ = enc.Encode(v)
}

func atoiDef(s string, def int) int {
	if s == "" {
		return def
	}
	n, err := strconv.Atoi(s)
	if err != nil || n < 1 {
		return def
	}
	return n
}

func jsonDecode(r *http.Request, v any) error {
	defer r.Body.Close()
	dec := json.NewDecoder(io.LimitReader(r.Body, 1<<20))
	return dec.Decode(v)
}