ticket-auth-project/src/auth/jwt.strategy.ts

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

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(private usersService: UsersService) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: 'secretMerhad',
    });
  }
  async validate(payload: any) {
    const user = await this.usersService.findByUsername(payload.username);
    if (!user) {
      throw new UnauthorizedException();
    }
    return user;
  }
}