import { Injectable, UnauthorizedException } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';
import { UserService } from '~/user/services';
import { IJwtPayload } from '../interfaces';

@Injectable()
export class AccessTokenStrategy extends PassportStrategy(Strategy, 'access-token') {
  constructor(configService: ConfigService, private userService: UserService) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: configService.get<string>('JWT_ACCESS_TOKEN_SECRET'),
    });
  }

  async validate(payload: IJwtPayload) {
    const user = await this.userService.findUser({ id: payload.sub });

    if (!user) {
      throw new UnauthorizedException();
    }

    return payload;
  }
}