feat: add auth middleware

for signup add google middleware to verify google access_token

#18

src/auth/google/google.middleware.ts

@@ -0,0 +1,45 @@
+import { Injectable, NestMiddleware, Logger } from '@nestjs/common';
+import { Request, Response, NextFunction } from 'express';
+import axios from 'axios';
+
+@Injectable()
+export class GoogleMiddleware implements NestMiddleware {
+  private readonly logger = new Logger(GoogleMiddleware.name);
+  constructor() {}
+
+  async use(req: Request, res: Response, next: NextFunction) {
+    const rawCookies = req.headers.cookie?.split(';');
+    const parsedCookies: any = {};
+    rawCookies?.forEach((rawCookie) => {
+      const parsedCookie = rawCookie.split('=');
+      parsedCookies[parsedCookie[0].trim()] = parsedCookie[1];
+    });
+    const token = parsedCookies.google_token;
+
+    if (token) {
+      try {
+        const response = await axios.get(
+          'https://www.googleapis.com/oauth2/v3/tokeninfo',
+          {
+            params: {
+              access_token: token,
+            },
+          },
+        );
+        const userInfo = response.data;
+        if (!userInfo) {
+          throw new Error('Invalid token');
+        }
+        req['user'] = userInfo;
+        console.log('userInfo', userInfo);
+        next();
+      } catch (error) {
+        this.logger.error(error);
+        res.status(401).json({ message: 'Invalid token' });
+      }
+    } else {
+      this.logger.error('Token not found');
+      res.status(401).json({ message: 'Token not found' });
+    }
+  }
+}