feat: Phase 1-3 全部完成 — 沙盒增强、学情分析、学习路径

backend/src/common/interceptors/logging.interceptor.ts

@@ -0,0 +1,22 @@
+import { Injectable, NestInterceptor, ExecutionContext, CallHandler, Logger } from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { tap } from 'rxjs/operators';
+
+@Injectable()
+export class LoggingInterceptor implements NestInterceptor {
+  private readonly logger = new Logger('HTTP');
+
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    const request = context.switchToHttp().getRequest();
+    const { method, url } = request;
+    const now = Date.now();
+
+    return next.handle().pipe(
+      tap(() => {
+        const response = context.switchToHttp().getResponse();
+        const ms = Date.now() - now;
+        this.logger.log(`${method} ${url} ${response.statusCode} ${ms}ms`);
+      }),
+    );
+  }
+}