library

/* eslint-disable linebreak-style */
import { libraryShelf } from '../common/library-shelf.js';

export class Library {

    _shelves;
    constructor() {
      this._shelves = {};
    }


    addBook(book, shelf) {
      if (!Object.values(libraryShelf).includes(shelf)) {
        throw Error('The shelf value is invalid');
      }

      if (!(shelf in this._shelves)) {
        this._shelves[shelf] = [];
      }

      this._shelves[shelf].push(book);
    }

    printBooks() {
      const title = '---Task Board ---\nTasks:\n';

      if (Object.keys(this._shelves).length === 0) {

        console.log(title + 'No books added');

      } else {

        let shelfAsString = '';
        // eslint-disable-next-line guard-for-in
        for (const key in this._shelves) {
          const element = this._shelves[key];
          shelfAsString += ` == ${libraryShelf[key]} == \n`;

          element.forEach(el => {
            shelfAsString += `${el.title}, by ${el.authors}, ${el.pages} \n`;
          });

          // if (Object.hasOwn(this._shelves, key)) {
          //   element.map(el => shelfAsString += console.log(el.toString()));
          //   // shelfAsString += this._shelves[key].map(el => el.toString());
          // }
        }
        console.log(title + shelfAsString);
      }
    }

};