import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy, ExtractJwt, StrategyOptions } from 'passport-jwt';
import { ConfigService } from '@nestjs/config';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(configService: ConfigService) {
    const secret = configService.get<string>('JWT_SECRET');
    if (!secret) {
      throw new Error('JWT_SECRET is not defined');
    }

    const opts: StrategyOptions = {
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: secret,
    };

    super(opts);
  }

  async validate(payload: any) {
    // Devuelve lo que estará disponible en Request.user
    return { userId: payload.sub, email: payload.email, origen: payload.tipo, tipo: payload.tipo, };
  }
}