function getNested(obj: any, path: string): any {
  return path.split(".").reduce((o, k) => o?.[k], obj);
}

export function applyDisplayFormat(item: any, format: string): string {
  if (!item || typeof item !== "object") return String(item ?? "");
  return format.replace(/\{([\w.]+)\}/g, (_, key) => {
    const val = getNested(item, key);
    return val != null ? String(val) : "";
  });
}

/**
 * Resolve a media/image URL against the API base so relative paths
 * like `/uploads/entity_logos/x.svg` point at the backend origin.
 * Absolute (http/data/blob) URLs are returned untouched.
 */
export function resolveMediaUrl(value: string | null | undefined, baseUrl?: string): string | undefined {
  if (value == null || value === "") return undefined;
  if (value.startsWith("http") || value.startsWith("data:") || value.startsWith("blob:")) return value;
  if (value.startsWith("/") && baseUrl) return `${baseUrl.replace(/\/+$/, "")}${value}`;
  return value;
}