package handler

import (
	"fmt"
	"net/http"
	"os"
	"strings"
)

const legacyAPIEnvVar = "VCTP_ENABLE_LEGACY_API"

func legacyAPIEnabled() bool {
	return strings.TrimSpace(os.Getenv(legacyAPIEnvVar)) == "1"
}

func (h *Handler) denyLegacyAPI(w http.ResponseWriter, endpoint string) bool {
	if legacyAPIEnabled() {
		return false
	}
	h.Logger.Warn("legacy endpoint request blocked", "endpoint", endpoint, "env_var", legacyAPIEnvVar)
	writeJSONError(w, http.StatusGone, fmt.Sprintf("%s is deprecated and disabled; set %s=1 to temporarily re-enable", endpoint, legacyAPIEnvVar))
	return true
}