added option for impact route to return a specific map with ?mapName parameter

discord_verificiation/playtime-frontend/app/api/maps/impact/route.ts

@@ -8,6 +8,17 @@ export async function GET(req: NextRequest) {
   const directionParam = req.nextUrl.searchParams.get('direction');
   const offset = Math.max(0, Number(req.nextUrl.searchParams.get('offset')) || 0);
 
+  // Accept either `mapName=foo` or `mapNames=foo,bar` (also tolerate
+  // repeated `mapName` params), so individual maps can be looked up
+  // directly instead of paging through the whole leaderboard.
+  const mapNames = [
+    ...req.nextUrl.searchParams.getAll('mapName'),
+    ...req.nextUrl.searchParams.getAll('mapNames'),
+  ]
+    .flatMap((v) => v.split(','))
+    .map((v) => v.trim())
+    .filter(Boolean);
+
   const sortBy = sortByParam === 'popularity' ? 'popularity' : 'impact';
   // Impact defaults to ascending (worst/most population-harming first, the
   // whole point of the feature); popularity defaults to descending (most
@@ -16,8 +27,15 @@ export async function GET(req: NextRequest) {
     ? directionParam
     : sortBy === 'popularity' ? 'desc' : 'asc';
 
-  const maps = await getMapImpactLeaderboard(sortBy, direction, PAGE_SIZE, offset);
-  const hasMore = maps.length === PAGE_SIZE;
+  const maps = await getMapImpactLeaderboard(
+    sortBy,
+    direction,
+    PAGE_SIZE,
+    offset,
+    mapNames.length > 0 ? mapNames : undefined,
+  );
+  // Pagination only applies when not filtering by name (see getMapImpactLeaderboard).
+  const hasMore = mapNames.length === 0 && maps.length === PAGE_SIZE;
 
   return NextResponse.json({ maps, hasMore });
 }