import { Injectable, NotFoundException } from '@nestjs/common';
import { UserRepository } from '../users/UserRepository';
import * as md5 from 'md5';

@Injectable()
export class ChangePasswordService {
  constructor(private readonly userRepository: UserRepository) {}

  async execute(userId: number, oldPassword: string, newPassword: string) {
    const current = await this.userRepository.findByIdAndPassword(
      userId,
      md5(oldPassword).toUpperCase(),
    );

    if (!current) {
      throw new NotFoundException('Usuário não encontrado ou senha inválida');
    }

    const newPasswordHash = md5(newPassword).toUpperCase();
    await this.userRepository.updatePassword(userId, newPasswordHash);
    return current;
  }
}