import type { TranslationParams } from "../../i18n";

/** Keep IDs and parameters in state so open results follow later locale changes. */
export type AdminMessage = string | {
  message: string;
  params?: Readonly<Record<string, string | number | { message: string }>>;
};

export function adminMessage(message: string, params?: Exclude<AdminMessage, string>["params"]): AdminMessage {
  return { message, params };
}

/** Local API diagnostics retain their code; translate only the known message body. */
export function renderAdminDiagnostic(t: (message: string) => string, diagnostic: string): string {
  const match = /^([a-z][a-z_]+): (.+)$/.exec(diagnostic);
  return match ? `${match[1]}: ${t(match[2])}` : t(diagnostic);
}

export function renderAdminMessage(
  t: (message: string, params?: TranslationParams) => string,
  value: AdminMessage,
): string {
  if (typeof value === "string") return t(value);
  const params = value.params && Object.fromEntries(Object.entries(value.params).map(([key, param]) =>
    [key, typeof param === "object" ? t(param.message) : param],
  ));
  return t(value.message, params);
}