import { Injectable, UnauthorizedException } from '@nestjs/common'
import { PassportStrategy } from '@nestjs/passport'
import { ExtractJwt, Strategy } from 'passport-jwt'
import { JWT_SECRET } from './auth.module'
import { UsersService } from 'src/users/users.service'

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy, 'jwt') {
  constructor(private usersService: UsersService) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      secretOrKey: JWT_SECRET,
    })
  }

  async validate(payload: { userId: number }) {
    const user = await this.usersService.findOne(payload.userId)
    if (!user) {
      throw new UnauthorizedException()
    }
    return user
  }
}