pcpuma_unam_api/src/bcrypt/bcrypt.service.ts

import * as bcrypt from 'bcrypt';
import { Injectable } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';

@Injectable()
export class BcryptService {
  constructor(private configService: ConfigService) {}

  comparar(password: string, passwordDb: string) {
    return bcrypt.compareSync(password, passwordDb);
  }

  encriptar(password: string) {
    const salt = bcrypt.genSaltSync(
      parseInt(this.configService.get<string>('SALT_ROUNDS')),
    );

    return bcrypt.hashSync(password, salt);
  }

  generarPassword = () => {
    const length = 8;
    const charset =
      'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    let password = '';

    for (let i = 0; i < length; i++)
      password += charset.charAt(Math.floor(Math.random() * charset.length));
    return password;
  };
}