// Pure derivations for the statistics screen, extracted so they are unit-testable.

import type { Stats } from './model';

/** gamesPlayed is the total finished games (wins + losses + draws). */
export function gamesPlayed(s: Stats): number {
  return s.wins + s.losses + s.draws;
}

/** winRate is the percentage of finished games won, rounded; 0 when none played. */
export function winRate(s: Stats): number {
  const n = gamesPlayed(s);
  return n > 0 ? Math.round((s.wins / n) * 100) : 0;
}