import type { MediaAsset } from "./api";

const tokens = (value: string) => value
  .toLocaleLowerCase("ru")
  .replaceAll("ё", "е")
  .replace(/^(оз\.|р\.)\s*/, "")
  .replace(/[^a-zа-я0-9]+/giu, " ")
  .trim()
  .split(/\s+/)
  .filter(Boolean);

export const findMediaByLabel = (assets: MediaAsset[], label: string): MediaAsset | undefined => {
  const wanted = tokens(label);
  const exact = assets.filter((asset) => tokens(asset.label ?? "").join(" ") === wanted.join(" "));
  if (exact.length === 1) return exact[0];

  const wantedSet = new Set(wanted);
  const candidates = assets.filter((asset) => {
    const available = new Set(tokens(asset.label ?? ""));
    return wanted.every((token) => available.has(token)) || [...available].every((token) => wantedSet.has(token));
  });
  return candidates.length === 1 ? candidates[0] : undefined;
};