251123:2300 Update T1

backend/src/common/interceptors/audit-log.interceptor.ts

@@ -0,0 +1,80 @@
+import {
+  CallHandler,
+  ExecutionContext,
+  Injectable,
+  NestInterceptor,
+  Logger,
+} from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { Observable } from 'rxjs';
+import { tap } from 'rxjs/operators';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { Request } from 'express';
+
+import { AuditLog } from '../entities/audit-log.entity';
+import { AUDIT_KEY, AuditMetadata } from '../decorators/audit.decorator';
+import { User } from '../../modules/user/entities/user.entity';
+
+@Injectable()
+export class AuditLogInterceptor implements NestInterceptor {
+  private readonly logger = new Logger(AuditLogInterceptor.name);
+
+  constructor(
+    private reflector: Reflector,
+    @InjectRepository(AuditLog)
+    private auditLogRepo: Repository<AuditLog>,
+  ) {}
+
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    const auditMetadata = this.reflector.getAllAndOverride<AuditMetadata>(
+      AUDIT_KEY,
+      [context.getHandler(), context.getClass()],
+    );
+
+    if (!auditMetadata) {
+      return next.handle();
+    }
+
+    const request = context.switchToHttp().getRequest<Request>();
+    const user = (request as any).user as User;
+    const rawIp = request.ip || request.socket.remoteAddress;
+    const ip = Array.isArray(rawIp) ? rawIp[0] : rawIp;
+    const userAgent = request.get('user-agent');
+
+    return next.handle().pipe(
+      tap(async (data) => {
+        try {
+          let entityId = null;
+
+          if (data && typeof data === 'object') {
+            if ('id' in data) entityId = String(data.id);
+            else if ('audit_id' in data) entityId = String(data.audit_id);
+            else if ('user_id' in data) entityId = String(data.user_id);
+          }
+
+          if (!entityId && request.params.id) {
+            entityId = String(request.params.id);
+          }
+
+          // ✅ FIX: ใช้ user?.user_id || null
+          const auditLog = this.auditLogRepo.create({
+            userId: user ? user.user_id : null,
+            action: auditMetadata.action,
+            entityType: auditMetadata.entityType,
+            entityId: entityId,
+            ipAddress: ip,
+            userAgent: userAgent,
+            severity: 'INFO',
+          } as unknown as AuditLog); // ✨ Trick: Cast ผ่าน unknown เพื่อล้าง Error ถ้า TS ยังไม่อัปเดต
+
+          await this.auditLogRepo.save(auditLog);
+        } catch (error) {
+          this.logger.error(
+            `Failed to create audit log for ${auditMetadata.action}: ${(error as Error).message}`,
+          );
+        }
+      }),
+    );
+  }
+}