agregando metodo para actualizar preferencias de usuarios

import { Injectable } from '@nestjs/common';

import { BadRequestException, Injectable } from '@nestjs/common';

import { InjectRepository } from '@nestjs/typeorm';

import { User } from './entities/user.entity';

import { Repository } from 'typeorm';

import { CreateUserDto } from './dto/create-user.dto';

import { Category } from 'src/category/entities/category.entity';

import { CategoryService } from 'src/category/category.service';

import { LANGUAGES } from 'src/shared/enum/languages.enum';

@Injectable()

/**

 * Service responsible for handling user-related operations.

 */

export class UserService {

  constructor(@InjectRepository(User) private userRepository: Repository<User>) {}

  constructor(

    @InjectRepository(User) private userRepository: Repository<User>,

    private categoryService: CategoryService,

  ) {}

  async findOne(email: string) {

    return await this.userRepository.findOneBy({ email });

  async updatePassword(email: string, password: string) {

    await this.userRepository.update({ email }, { password });

  }

  async updatePreferedCategories(email: string, idCategories: number[]) {

    const user = await this.userRepository.findOneBy({ email });

    const categories: Category[] = [];

    for (const idCategory of idCategories) {

      const categoryEN: Category = await this.categoryService.findOne(idCategory);

      if (!categoryEN) throw new BadRequestException('Category not found');

      categoryEN.language = LANGUAGES.EN;

      const categoryES: Category = {

        ...categoryEN,

        language: LANGUAGES.ES,

      };

      categories.push(categoryEN);

      categories.push(categoryES);

    }

    user.preferedCategories = categories;

    await this.userRepository.save(user);

  }

  async getPreferedCategories(email: string, language: LANGUAGES): Promise<any[]> {

    const user: any = await this.userRepository.findOne({

      relations: {

        preferedCategories: true,

      },

      where: {

        email,

        preferedCategories: {

          language,

        },

      },

    });

    return user?.preferedCategories || [];

  }

}