Re-implement authentication (#136)

* Remove hasura and hasura-auth

* Implement authentication

server/src/auth/google.auth.controller.ts

@@ -0,0 +1,27 @@
+import { Controller, Get, Req, Res, UseGuards } from '@nestjs/common';
+import { AuthGuard } from '@nestjs/passport';
+import { Request, Response } from 'express';
+import { AuthService } from './services/auth.service';
+import { Profile } from 'passport-google-oauth20';
+
+@Controller('auth/google')
+export class GoogleAuthController {
+  constructor(private authService: AuthService) {}
+
+  @Get()
+  @UseGuards(AuthGuard('google'))
+  async googleAuth(@Req() req) {}
+
+  @Get('redirect')
+  @UseGuards(AuthGuard('google'))
+  async googleAuthRedirect(@Req() req: Request, @Res() res: Response) {
+    const user = await this.authService.upsertUser(req.user as { firstName: string, lastName: string, email: string })
+
+    if (!user) {
+      return res.status(400).send('User not created');
+    }
+    const refreshToken = await this.authService.registerRefreshToken(user)
+    return res.redirect(this.authService.computeRedirectURI(refreshToken.refreshToken));
+  }
+  
+}