import type { Media } from "@/payload-types";

type MediaSize = "thumbnail" | "card" | "hero";

/** Resolves a populated (depth >= 1) media relationship to a usable image URL. */
export function mediaUrl(
  value: Media | number | null | undefined,
  size?: MediaSize,
): string | undefined {
  if (!value || typeof value === "number") return undefined;
  if (size) {
    const sized = value.sizes?.[size]?.url;
    if (sized) return sized;
  }
  return value.url ?? undefined;
}

export function mediaAlt(value: Media | number | null | undefined): string | undefined {
  if (!value || typeof value === "number") return undefined;
  return value.alt;
}