nest auth middleware

session-auth.middleware.ts

import { Injectable, NestMiddleware } from '@nestjs/common';
import { ExpressMiddleware } from '@nestjs/common/interfaces/middlewares/express-midleware.interface';
import { NextFunction } from 'express';

@Injectable()
export class SessionAuthMiddleware implements NestMiddleware {
  constructor() {
  }

  async resolve(...args: any[]): Promise<ExpressMiddleware> {
    return async (req: any, res: Response, next: NextFunction) => {
      if (req.query.socketId) {
        req.session.socketId = req.query.socketId;
      }
      next();
    };

  }
}

strategy-callback.middleware.ts

import { Injectable, NestMiddleware } from '@nestjs/common';
import { ExpressMiddleware } from '@nestjs/common/interfaces/middlewares/express-midleware.interface';
import { NextFunction } from 'express';

@Injectable()
export class StrategyCallbackMiddleware implements NestMiddleware {
  constructor() {
  }

  async resolve(...args: any[]): Promise<ExpressMiddleware> {
    return async (req: any, res: any, next: NextFunction) => {
      // Get the io object stored into bootstrap on main.ts
      const io = req.app.get('io');
      const user = {
        name: req.user.displayName,
        photo: req.user.photo,
      };
      // get the socketId of client and send it the user connected.
      io.in(req.session.socketId).emit(args[0].provider, user);
      res.end();
    };

  }
}

strategy.middleware.ts

import { Injectable, NestMiddleware } from '@nestjs/common';
import { ExpressMiddleware } from '@nestjs/common/interfaces/middlewares/express-midleware.interface';
import * as passport from 'passport';

@Injectable()
export class StrategyMiddleware implements NestMiddleware {
  constructor() {
  }

  async resolve(...args: any[]): Promise<ExpressMiddleware> {
    if (args.length === 0 || !args[0].provider) {
      throw new Error('Missing provider for authenticate oauth');
    }
    // 'google', 'facebook', 'github', 'twitter', ....
    const provider = args[0].provider;
    return passport.authenticate(provider, { scope: ['profile', 'email'] });
  }
}