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import { BadRequestException, Injectable, Logger } from "@nestjs/common";
import { PassportStrategy } from "@nestjs/passport";
import { createId } from "@paralleldrive/cuid2";
import { User } from "@prisma/client";
import { ErrorMessage, processUsername } from "@reactive-resume/utils";
import { Profile, Strategy, StrategyOptions, VerifyCallback } from "passport-google-oauth20";
import { UserService } from "@/server/user/user.service";
@Injectable()
export class GoogleStrategy extends PassportStrategy(Strategy, "google") {
constructor(
readonly clientID: string,
readonly clientSecret: string,
readonly callbackURL: string,
private readonly userService: UserService,
) {
super({ clientID, clientSecret, callbackURL, scope: ["email", "profile"] } as StrategyOptions);
}
async validate(
_accessToken: string,
_refreshToken: string,
profile: Profile,
done: VerifyCallback,
) {
const { displayName, emails, photos, username } = profile;
const email = (emails?.[0].value ?? `${username}@google.com`).toLocaleLowerCase();
const picture = photos?.[0].value;
let user: User | null = null;
if (!email) throw new BadRequestException(ErrorMessage.InvalidCredentials);
try {
user =
(await this.userService.findOneByIdentifier(email)) ??
(username ? await this.userService.findOneByIdentifier(username) : null);
if (!user) throw new BadRequestException(ErrorMessage.InvalidCredentials);
done(null, user);
} catch {
try {
user = await this.userService.create({
email,
picture,
locale: "en-US",
provider: "google",
name: displayName || createId(),
emailVerified: true, // auto-verify emails
username: processUsername(username ?? email.split("@")[0]),
secrets: { create: {} },
});
done(null, user);
} catch (error) {
Logger.error(error);
throw new BadRequestException(ErrorMessage.UserAlreadyExists);
}
}
}
}
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