치지직 채팅창 인식 추가 및 주사위 횟수 증가 추가.

app/api/rooms/[roomId]/leave/route.ts

@@ -0,0 +1,59 @@
+import { NextResponse } from 'next/server';
+import { scheduleDisconnectRoomChat } from '@/lib/chzzk/chat-session';
+import {
+  getRoom,
+  getRoomViewerCount,
+  removeRoomViewer,
+  toPublicRoom,
+} from '@/lib/rooms/store';
+
+export const runtime = 'nodejs';
+
+type Params = { params: Promise<{ roomId: string }> };
+
+/**
+ * 탭/창 종료·페이지 이탈 시 호출.
+ * 마지막 시청자면 치지직 채팅 웹소켓을 유예 후 끊는다 (빠른 재입장 대비).
+ */
+export async function POST(request: Request, { params }: Params) {
+  const { roomId } = await params;
+  const room = getRoom(roomId);
+  if (!room) {
+    return NextResponse.json({ ok: true, emptied: true });
+  }
+
+  let clientId = '';
+  const contentType = request.headers.get('content-type') || '';
+  try {
+    if (contentType.includes('application/json')) {
+      const body = (await request.json()) as { clientId?: string };
+      clientId = body.clientId?.trim() || '';
+    } else {
+      const text = await request.text();
+      if (text.startsWith('{')) {
+        const body = JSON.parse(text) as { clientId?: string };
+        clientId = body.clientId?.trim() || '';
+      } else {
+        clientId = new URLSearchParams(text).get('clientId')?.trim() || '';
+      }
+    }
+  } catch {
+    clientId = '';
+  }
+
+  if (!clientId) {
+    return NextResponse.json({ ok: true, viewers: getRoomViewerCount(roomId) });
+  }
+
+  const { viewers, emptied } = removeRoomViewer(roomId, clientId);
+  if (emptied) {
+    scheduleDisconnectRoomChat(roomId);
+  }
+
+  return NextResponse.json({
+    ok: true,
+    viewers,
+    emptied,
+    room: toPublicRoom(getRoom(roomId) ?? room),
+  });
+}