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

@Injectable()
export class AuthMiddleware implements NestMiddleware {
  use(req: Request, res: Response, next: NextFunction) {
    if (!req.session.user) {
      if (req.header('content-type')?.includes('application/json')) {
        throw new UnauthorizedException('Unauthorized');
      }

      res.redirect('/login?redirectTo=' + encodeURIComponent(req.originalUrl));
      return;
    }
    next();
  }
}