Se agregó el inicio de sesion de google

src/auth/google.strategy.ts

@@ -0,0 +1,39 @@
+// google.strategy.ts
+import { PassportStrategy } from '@nestjs/passport';
+import { Injectable, UnauthorizedException } from '@nestjs/common';
+import { Strategy, VerifyCallback } from 'passport-google-oauth20';
+import { ConfigService } from '@nestjs/config';
+import { AuthService } from './auth.service';
+
+@Injectable()
+export class GoogleStrategy extends PassportStrategy(Strategy, 'google') {
+  constructor(
+    private readonly authService: AuthService,
+    private readonly config: ConfigService,
+  ) {
+    super({
+      clientID: config.get<string>('GOOGLE_CLIENT_ID'),
+      clientSecret: config.get<string>('GOOGLE_CLIENT_SECRET'),
+      callbackURL: config.get<string>('GOOGLE_CALLBACK_URL'),
+      scope: ['email', 'profile'],
+    });
+  }
+
+  async validate(
+    accessToken: string,
+    refreshToken: string,
+    profile: any,
+    done: VerifyCallback,
+  ): Promise<any> {
+    const { emails } = profile;
+    const email = emails[0].value;
+
+    const user = await this.authService.validateGoogleUser(email);
+
+    if (!user) {
+      throw new UnauthorizedException('Usuario no registrado en el sistema');
+    }
+
+    done(null, user);
+  }
+}