add-book-use-case.ts

import { Injectable } from '@nestjs/common';
import { Book } from '../../../core/entities';
import { IDataServices, ICrmServices } from '../../../core/abstracts';
import { CreateBookDto, UpdateBookDto } from '../../../core/dtos';
import { BookFactoryService } from './book-factory.service';

@Injectable()
export class BookServices {
  constructor(
    private dataServices: IDataServices,
    private crmServices: ICrmServices,
  ) {}

  async createBook(book: Book): Promise<Book> {
    try {
      // call to our dependencies
      const createdBook = await this.dataServices.books.create(book);
      await this.crmServices.bookAdded(createdBook);

      return createdBook;
    } catch (error) {
      throw error;
    }
  }
}