// 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'],
      failureRedirect: `${process.env.FRONTEND_URL}?error=oauth_failed`,
    });
  }

  async validate(
    accessToken: string,
    refreshToken: string,
    profile: any,
    done: VerifyCallback,
  ): Promise<any> {
    try{
    const { emails } = profile;
    const email = emails[0].value;

    const user = await this.authService.validateGoogleUser(email);

    if (!user) {
      done(null, false);
    }

    done(null, user);
    }catch(err){
      done(null, false);
    }
  }
}