backend/src/common/middlewares/device-info.middleware.ts

import { Injectable, NestMiddleware } from '@nestjs/common';
import { Request, Response, NextFunction } from 'express';

@Injectable()
export class DeviceInfoMiddleware implements NestMiddleware {
  use(req: Request, res: Response, next: NextFunction) {
    const deviceInfo = {
      ip: req.ip,
      userAgent: req.headers['user-agent'],
    };
    req['device-info'] = deviceInfo;
    next();
  }
}