predictions

src/features/bracket/utils/group.ts

@@ -0,0 +1,37 @@
+import { Match } from "@/features/matches/types";
+import { BracketData } from "../types";
+
+export const groupMatchesIntoBracket = (matches?: Match[]): BracketData => {
+  if (!matches || matches.length === 0) {
+    return { winners: [], losers: [] };
+  }
+
+  const winnersMap = new Map<number, Match[]>();
+  const losersMap = new Map<number, Match[]>();
+
+  matches
+    .filter((match) => match.round !== -1)
+    .sort((a, b) => a.lid - b.lid)
+    .forEach((match) => {
+      if (!match.is_losers_bracket) {
+        if (!winnersMap.has(match.round)) {
+          winnersMap.set(match.round, []);
+        }
+        winnersMap.get(match.round)!.push(match);
+      } else {
+        if (!losersMap.has(match.round)) {
+          losersMap.set(match.round, []);
+        }
+        losersMap.get(match.round)!.push(match);
+      }
+    });
+
+  const winners = Array.from(winnersMap.entries())
+    .sort(([a], [b]) => a - b)
+    .map(([, matches]) => matches);
+
+  const losers = Array.from(losersMap.entries())
+    .sort(([a], [b]) => a - b)
+    .map(([, matches]) => matches);
+  return { winners, losers };
+};