import type { KnownConfigKey } from "./registry";

const TRIMMABLE_GLOBAL_CONFIG_KEYS = [
  "siteName",
  "commentMailFromEmail",
  "commentSmtpHost",
  "commentSmtpUser",
  "commentSmtpPass",
] as const;

export function normalizeGlobalConfigValue<K extends KnownConfigKey>(key: K, value: unknown): unknown {
  if (typeof value !== "string") {
    return value;
  }
  if ((TRIMMABLE_GLOBAL_CONFIG_KEYS as readonly string[]).includes(key)) {
    return value.trim();
  }
  return value;
}