const cheerio = require('cheerio');
const languages = require('@libs/languages');
const isUrlAbsolute = require('@libs/isAbsoluteUrl');
const fetchApi = require('@libs/fetchApi');
const fetchFile = require('@libs/fetchFile');

const pluginId = 'LNR.org';
const baseUrl = 'https://lightnovelreader.org';

async function popularNovels(page) {
  const url = baseUrl + '/ranking/top-rated/' + page;
  const result = await fetchApi(url);
  const body = await result.text();

  const loadedCheerio = cheerio.load(body);

  const novels = [];

  loadedCheerio('.category-items.ranking-category.cm-list > ul > li').each(
    function () {
      let novelUrl = loadedCheerio(this).find('a').attr('href');

      if (novelUrl && !isUrlAbsolute(novelUrl)) {
        novelUrl = baseUrl + novelUrl;
      }

      if (novelUrl) {
        const novelName = loadedCheerio(this)
          .find('.category-name a')
          .text()
          .trim();
        let novelCover = loadedCheerio(this)
          .find('.category-img img')
          .attr('src');

        if (novelCover && !isUrlAbsolute(novelCover)) {
          novelCover = baseUrl + novelCover;
        }

        const novel = {
          url: novelUrl,
          name: novelName,
          cover: novelCover,
        };

        novels.push(novel);
      }
    },
  );

  return novels;
};

async function parseNovelAndChapters (novelUrl) {
  const url = novelUrl;
  const result = await fetchApi(url);
  const body = await result.text();

  let loadedCheerio = cheerio.load(body);

  const novel = {
    url: novelUrl,
    chapters: [],
  };

  novel.name = loadedCheerio('.section-header-title > h2').text();

  let novelCover = loadedCheerio('.novels-detail img').attr('src');

  novel.cover = novelCover
    ? isUrlAbsolute(novelCover)
      ? novelCover
      : baseUrl + novelCover
    : undefined;

  novel.summary = loadedCheerio(
    'div.container > div > div.col-12.col-xl-9 > div > div:nth-child(5) > div',
  )
    .text()
    .trim();

  novel.author = loadedCheerio(
    'div.novels-detail-right > ul > li:nth-child(6) > .novels-detail-right-in-right > a',
  )
    .text()
    .trim();

  novel.genres = loadedCheerio(
    'body > section:nth-child(4) > div > div > div.col-12.col-xl-9 > div > div:nth-child(2) > div > div.novels-detail-right > ul > li:nth-child(3) > div.novels-detail-right-in-right',
  )
    .text()
    .trim()

  novel.status = loadedCheerio(
    'div.novels-detail-right > ul > li:nth-child(2) > .novels-detail-right-in-right',
  )
    .text()
    .trim();

  loadedCheerio('.cm-tabs-content > ul > li').each(function () {
    let chapterUrl = loadedCheerio(this).find('a').attr('href');

    if (chapterUrl && !isUrlAbsolute(chapterUrl)) {
      chapterUrl = baseUrl + chapterUrl;
    }

    if (chapterUrl) {
      const chapterName = loadedCheerio(this).find('a').text().trim();
      const releaseDate = null;

      const chapter = {
        name: chapterName,
        releaseTime: releaseDate,
        url: chapterUrl,
      };

      novel.chapters.push(chapter);
    }
  });

  return novel;
};

async function parseChapter(chapterUrl) {
  const url = chapterUrl;
  const result = await fetchApi(url);
  const body = await result.text();

  const loadedCheerio = cheerio.load(body);

  const chapterText = loadedCheerio('#chapterText').html() || '';

  return chapterText;
};


async function searchNovels (searchTerm) {
  const url = baseUrl + `/search/autocomplete?dataType=json&query=${searchTerm}`;
  const result = await fetchApi(url);
  const body = await result.json();
  const data = body.results || [];

  const novels = [];

  data.forEach(item => {
    let novelUrl = item.link;
    let novelName = item.original_title
    let novelCover = item.image;

    novels.push({
      url: novelUrl,
      name: novelName,
      cover: novelCover,
    });
  });

  return novels;
};

async function fetchImage (url) {
  return await fetchFile(url, {});
}

module.exports = {
    id: pluginId,
    name: 'LightNovelReader',
    icon: 'src/en/lightnovelreader/icon.png',
    version: '1.0.0',
    site: baseUrl,
    lang: languages.English,
    description: 'This is description for plugin',
    protected: false,
    fetchImage,
    popularNovels,
    parseNovelAndChapters,
    parseChapter,
    searchNovels,
}