nest-project/src/auth/strategies/jwt.strategy.ts

import { Strategy, ExtractJwt } from 'passport-jwt'
import { PassportStrategy } from '@nestjs/passport'
import { Injectable, UnauthorizedException } from '@nestjs/common'
import { ConfigService } from '@nestjs/config'
import { User } from '@prisma/client'
import { PrismaService } from 'nestjs-prisma'

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(
    private prismaService: PrismaService,
    readonly configService: ConfigService,
  ) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      secretOrKey: configService.get('JWT_ACCESS_SECRET', 'JWT_ACCESS_SECRET'),
    })
  }

  async validate(payload: { userId: string }): Promise<User> {
    const user = await this.prismaService.user.findUnique({
      where: { id: payload.userId },
    })
    if (!user) {
      throw new UnauthorizedException()
    }
    return user
  }
}