fix: more imports 2

packages/core/src/blitz/generateStats.ts

@@ -0,0 +1,57 @@
+import { BlitzStats, calculateWN8 } from '@blitzkit/core';
+
+export type Stat = keyof ReturnType<typeof generateStats>;
+
+export const STAT_NAMES: Record<Stat, string> = {
+  battles: 'Battles',
+  winrate: 'Winrate',
+  wn8: 'WN8',
+  averageDamage: 'Damage',
+  damage: 'Accumulated damage',
+  wins: 'Wins',
+};
+
+export const STAT_KEYS = Object.keys(STAT_NAMES) as Stat[];
+
+export function generateStats(s: BlitzStats, e?: BlitzStats) {
+  return {
+    battles: s.battles,
+    wins: s.wins,
+    winrate: s.wins / s.battles,
+    wn8: e ? calculateWN8(e, s) : null,
+    damage: s.damage_dealt,
+    averageDamage: s.damage_dealt / s.battles,
+  };
+}
+
+export function prettifyStats(s: ReturnType<typeof generateStats>) {
+  return {
+    battles: `${s.battles}`,
+    wins: `${s.wins}`,
+    winrate: `${(s.winrate * 100).toFixed(0)}%`,
+    wn8: s.wn8 ? s.wn8.toFixed(0) : '--',
+    damage: `${s.damage}`,
+    averageDamage: s.averageDamage.toFixed(0),
+  } satisfies Record<Stat, string>;
+}
+
+export function sumBlitzStarsStats(s: ReturnType<typeof generateStats>[]) {
+  function sum(slice: (stat: ReturnType<typeof generateStats>) => number) {
+    return s.reduce((a, b) => a + slice(b), 0);
+  }
+
+  const battles = sum((s) => s.battles);
+  const wins = sum((s) => s.wins);
+  const damage = sum((s) => s.damage);
+
+  return {
+    battles,
+    wins,
+    winrate: wins / battles,
+    damage,
+    averageDamage: damage / battles,
+    wn8:
+      sum((s) => (s.wn8 ? s.wn8 * s.battles : 0)) /
+      sum((s) => (s.wn8 ? s.battles : 0)),
+  } satisfies ReturnType<typeof generateStats>;
+}