📑 :: (#178) UserAnswerCountUsecase 파일 생성

src/usecase/user/user-answer-count.ts

@@ -0,0 +1,11 @@
+import { VideoRepository } from 'src/domain/repositories/video.repository';
+
+export class UserAnswerCountUsecase {
+  constructor(private readonly videoRepository: VideoRepository) {}
+
+  async execute(userId: number): Promise<number> {
+    const userAnswerCnt = await this.videoRepository.userAnswerCount(userId);
+
+    return userAnswerCnt;
+  }
+}