import { menuEnum } from "../constants/index.js";
import { fetchData, downloadBook, searchByAuthor } from "../requests/index.js";

export default class BookSection {
  subElements = [];
  element;

  constructor({ url = "", label = "" } = {}) {
    this.url = url;
    this.label = label;
    this.render();
  }

  get template() {
    return `
        <div class='main-book__wrapper'>
            <div data-element="body"></div>
            <div class='flowers mh-auto'></div>
        </div>
      `;
  }

  initialize() {
    this.initEventListeners();
  }

  initEventListeners() {
    const booksListener = document.querySelector(".main-book__wrapper");
    booksListener.addEventListener("click", (event) => {
      let id, title;
      const isLike = event.target.closest("[data-like]");

      const isMenu = event.target.closest("[data-menu]");
      const isAction = event.target.closest("[data-action]");
      const isLink = event.target.closest("[data-link]");
      const isAuthor = event.target.closest("[data-author]");

      switch (true) {
        case !!isAction:
          id = isAction.dataset.action;
          const { authorid, bookid } =
            isAction.parentNode.parentNode.dataset || {};
          this.makeAction({ id, authorid, bookid });

          break;
        case !!isLike:
          this.makeLike(isLike);
          break;

        case !!isMenu:
          this.openMenu(isMenu);

          break;
        case !!isLink:
          id = isLink.dataset.bookid;
          title = isLink.dataset.title;
          let format = isLink.dataset.format.toLowerCase();
          downloadBook({ id, title, format });

          break;
        case !!isAuthor:
          id = isAuthor.dataset.author;
          this.update({ isByAuthor: true, id });

        default:
          this.closeMenu();

          break;
      }
    });
  }

  destroyEventListeners() {}

  getBookBody(data) {
    return (data || [])
      .map(
        ({
          id,
          authors,
          description,
          format,
          genres,
          imageUrl,
          title,
          series,
          subseries,
          year,
          tags,
          isFavorite,
        }) => {
          const { name, id: authorid } = authors[0] || "Неизвестно";
          return `
            <article data-element="card" class="main-book__card d-fl mb-m mh-auto">
                <div class="main-book__menu_wrapper d-fl">
                    <div class="main-book__menu_like ${
                      isFavorite ? "liked" : "not-liked"
                    }" data-like data-bookid=${id}></div>

                      <nav class="main-book__menu main-book__menu_closed" 
                      data-authorid=${authorid}
                      data-bookid=${id}
                      data-menu></nav>
                </div>
                <div class="main-book__image mr-m">
                    <div class='d-fl'>
                        <div class="main-book__format pr-s">
                          <a class="main-book__link" 
                          data-link 
                          data-bookid=${id} 
                          data-title=${(title || "Unknown")
                            .split(" ")
                            .join("_")}
                          data-format=${format}
                          >${format}</a>
                        </div>
                        <div>
                            <img class="d-bl" src=${
                              imageUrl ? imageUrl : "../web/assets/cover.jpg"
                            } alt="cover" style="width:80px;height:128px;">
                            <a class="main-card__author main-book__link second-text mt-s" data-author=${authorid}>
                            ${name || ""}</a>
                            <div class="second-text mt-s">
                            ${year || "Год неизвестен"}</div>
                        </div>
                    </div>
        
                </div>
                <div class="main-book__description ">
                    <div class="main-book__header">
                        <span class="second-text mt-s no-wrap "><strong>
                        ${title || "Название неизвестно"}</strong></span>
                        <span class="second-text pl-xs no-wrap">
                        ${series || ""}</span>
                        <span class="second-text pl-xs no-wrap ">
                        ${subseries || ""}</span>
                    </div>
                    <div class="main-book__body  mt-s">
                        <div>
                            <span class="second-text">
                            ${description || "Нет описания"}</span>
                        </div>
                    </div>
                    <div class="main-book__footer d-fl mt-m">${this.getTags(
                      tags
                    )}</div>
                </div>
                            
            </article>`;
        }
      )
      .join("");
  }

  getEmptyBody() {
    return `
        <article class="no-book__card d-fl mb-m mh-auto">
            <div class="mh-auto">Ничего не найдено</div>
        </article>`;
  }

  getMenuBody() {
    return menuEnum
      .map(({ label, id }) => {
        return `
        <li class="main-book__action second-text" id="main-book__action" data-action=${id}>
          ${label}
        </li>`;
      })
      .join("");
  }

  getTags(tags) {
    return (tags || [])
      .map(({ id, name }) => {
        return `<a class="main-book__tag main-book__link" data-id=${id}>#${name}</a>`;
      })
      .join("");
  }

  openMenu(element) {
    this.closeMenu();
    element.classList.remove("main-book__menu_closed");

    const divElement = document.createElement("ul");
    divElement.innerHTML = this.getMenuBody();

    element.append(divElement);
    element.classList.add("main-book__menu_opened");
  }

  closeMenu() {
    const elements = document.querySelectorAll(".main-book__menu_opened");

    if (elements && elements.length) {
      for (const subElement of elements) {
        subElement.firstElementChild.remove();
        subElement.classList.remove("main-book__menu_opened");
        subElement.classList.add("main-book__menu_closed");
      }
    }
  }

  async makeAction({ id, authorid, bookid }) {
    this.element.classList.add("blur", "spinner");

    if (menuEnum[id].action) {
      const data = await menuEnum[id].action({ id, authorid, bookid });
    } else {
      alert("Напиши меня");
    }

    this.element.classList.remove("spinner");
    this.closeMenu()
  }

  makeLike(element) {
    const { bookid: likedBookId } = element.dataset || {};
    this.makeAction({ id: 0, authorid: "", bookid: likedBookId });
    element.classList.add("liked");
  }

  async update(params) {
    this.element.classList.add("blur", "spinner");

    let data = [];
    if (params?.isByAuthor) {
      data = await searchByAuthor({ id: params.id });
    } else {
      const query = params;
      data = await fetchData({ query, url: this.url });
    }
    console.log("data", data);
    if (data && Object.values(data).length) {
      this.subElements.body.innerHTML = this.getBookBody(data);
      this.initialize();
    } else {
      this.subElements.body.innerHTML = this.getEmptyBody();
    }
    this.element.classList.remove("spinner");
  }

  getSubElements(element) {
    const result = {};
    const elements = element.querySelectorAll("[data-element]");

    for (const subElement of elements) {
      const name = subElement.dataset.element;

      result[name] = subElement;
    }
    return result;
  }

  render() {
    const divElement = document.createElement("div");

    divElement.innerHTML = this.template;

    this.element = divElement.firstElementChild;
    this.subElements = this.getSubElements(this.element);
  }

  remove() {
    if (this.element) {
      this.element.remove();
      destroyEventListeners();
    }
  }

  destroy() {
    this.remove();
    this.element = null;
  }
}