feat: beggening of player stats

src/core/statistics/getBkniPercentile.ts

@@ -0,0 +1,46 @@
+/**
+ * (10)   0 -  10: super malum
+ * (10)  10 -  20: malum
+ * (20)  20 -  40: very bad
+ * (20)  40 -  60: bad
+ * (20)  60 -  80: below average
+ * (40)  80 - 120: average
+ * (20) 120 - 140: above average
+ * (20) 140 - 160: good
+ * (20) 160 - 180: very good
+ * (10) 180 - 190: unicum
+ * (10) 190 - 200: super unicum
+ */
+
+export enum BkniPercentile {
+  SuperMalum,
+  Malum,
+  VeryBad,
+  Bad,
+  BelowAverage,
+  Average,
+  AboveAverage,
+  Good,
+  VeryGood,
+  Unicum,
+  SuperUnicum,
+}
+
+const BKNI_PERCENTILES = [
+  { min: 0, percentile: BkniPercentile.SuperMalum },
+  { min: 10, percentile: BkniPercentile.Malum },
+  { min: 20, percentile: BkniPercentile.VeryBad },
+  { min: 40, percentile: BkniPercentile.Bad },
+  { min: 60, percentile: BkniPercentile.BelowAverage },
+  { min: 80, percentile: BkniPercentile.Average },
+  { min: 120, percentile: BkniPercentile.AboveAverage },
+  { min: 140, percentile: BkniPercentile.Good },
+  { min: 160, percentile: BkniPercentile.VeryGood },
+  { min: 180, percentile: BkniPercentile.Unicum },
+  { min: 190, percentile: BkniPercentile.SuperUnicum },
+];
+
+export default function getBkniPercentile(wn8: number) {
+  const lastIndex = BKNI_PERCENTILES.findLastIndex(({ min }) => min <= wn8);
+  return BKNI_PERCENTILES[lastIndex === -1 ? 0 : lastIndex].percentile;
+}