styling

src/features/bracket/utils/group-label.ts

@@ -0,0 +1,49 @@
+export interface GroupConfig {
+  num_groups: number;
+  advance_per_group: number;
+}
+
+export function getGroupLabel(
+  seed: number | undefined,
+  groupConfig: GroupConfig | undefined
+): string | undefined {
+  if (!seed || !groupConfig) return undefined;
+
+  const groupNames = ["A", "B", "C", "D", "E", "F", "G", "H"];
+  const numGroups = groupConfig.num_groups;
+  const advancePerGroup = groupConfig.advance_per_group;
+
+  const totalQualifiedTeams = numGroups * advancePerGroup;
+  const nextPowerOf2 = Math.pow(2, Math.ceil(Math.log2(totalQualifiedTeams)));
+  const wildcardsNeeded = nextPowerOf2 - totalQualifiedTeams;
+
+  if (seed > totalQualifiedTeams && wildcardsNeeded > 0) {
+    const wildcardNumber = seed - totalQualifiedTeams;
+    return `Wildcard ${wildcardNumber}`;
+  }
+
+  const pairIndex = Math.floor((seed - 1) / 2);
+  const isFirstInPair = (seed - 1) % 2 === 0;
+
+  if (isFirstInPair) {
+    const groupIndex = pairIndex % numGroups;
+    const rankIndex = Math.floor(pairIndex / numGroups);
+
+    const rank = rankIndex + 1;
+    const groupName = groupNames[groupIndex] || `${groupIndex + 1}`;
+    const rankSuffix =
+      rank === 1 ? "1st" : rank === 2 ? "2nd" : rank === 3 ? "3rd" : `${rank}th`;
+
+    return `${groupName} ${rankSuffix}`;
+  } else {
+    const groupIndex = (pairIndex + 1) % numGroups;
+    const rankIndex = advancePerGroup - 1 - Math.floor(pairIndex / numGroups);
+
+    const rank = rankIndex + 1;
+    const groupName = groupNames[groupIndex] || `${groupIndex + 1}`;
+    const rankSuffix =
+      rank === 1 ? "1st" : rank === 2 ? "2nd" : rank === 3 ? "3rd" : `${rank}th`;
+
+    return `${groupName} ${rankSuffix}`;
+  }
+}