@next-nest-auth/nestauth/src/nestauth-jwt.strategy.ts

NestAuth is an authentication solution for NestJS applications, designed to handle user login, session management, and token-based authentication (JWT). It integrates seamlessly with Next.js and other frontends to provide a unified authentication system,

import { ExtractJwt, Strategy } from "passport-jwt";
import { PassportStrategy } from "@nestjs/passport";
import { Inject, Injectable, UnauthorizedException } from "@nestjs/common";
import { JwtPayload } from "jsonwebtoken";
import * as macaddress from "macaddress";

@Injectable()
export class NestAuthJwtStrategy extends PassportStrategy(Strategy) {
    constructor(@Inject("JWT_SECRET") jwtSecret: string) {
        super({
            jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
            ignoreExpiration: false,
            secretOrKey: jwtSecret,
        });
    }

    async validate(payload: JwtPayload) {
        // return {
        //     userId: payload.sub,
        //     macId: payload.macId ?? (await macaddress.one()),
        //     email: payload.email,
        //     role: payload.role,
        //     name: payload.name,
        //     username: payload.username,
        //     pic: payload.pic,
        // };

        if (!payload) {
            throw new UnauthorizedException("Invalid token payload");
        }

        const macId = payload.macId ?? (await macaddress.one());

        const userData: Record<string, any> = {
            sub: payload.sub,
            macId,
        };

        for (const key of Object.keys(payload)) {
            if (key !== "sub" && key !== "macId") {
                userData[key] = payload[key];
            }
        }

        return userData;
    }
}