export const leaderboardDifficulties = [
  "all",
  "easy",
  "normal",
  "hard",
] as const;
export type LeaderboardDifficulty = (typeof leaderboardDifficulties)[number];
export type LeaderboardEntry =
  import("./profile-appearance").ProfileAppearance & {
    rank: number;
    player_id: string;
    display_name: string;
    name_glow?: boolean;
    best_score: number;
    average_score: number;
    games_played: number;
  };
export type LeaderboardData = {
  entries: LeaderboardEntry[];
  leaders: LeaderboardEntry[];
  total_players: number;
  total_games: number;
  matching_players: number;
  page: number;
  pages: number;
};

export function leaderboardFilters(
  params: Record<string, string | string[] | undefined>,
) {
  const difficulty =
    leaderboardDifficulties.find((value) => value === params.difficulty) ??
    "all";
  const search =
    typeof params.q === "string" ? params.q.trim().slice(0, 64) : "";
  const rawPage = typeof params.page === "string" ? Number(params.page) : 1;
  const page =
    Number.isSafeInteger(rawPage) && rawPage > 0
      ? Math.min(rawPage, 1_000_000)
      : 1;
  return { difficulty, search, page };
}

export function leaderboardHref(
  difficulty: LeaderboardDifficulty,
  search = "",
  page = 1,
) {
  const params = new URLSearchParams();
  if (difficulty !== "all") params.set("difficulty", difficulty);
  if (search) params.set("q", search);
  if (page > 1) params.set("page", String(page));
  return `/leaderboard${params.size ? `?${params}` : ""}`;
}

export const formatScore = (score: number) => score.toLocaleString("en-US");