import { fetchApi, fetchFile } from '@libs/fetch';
import { Filters, FilterTypes } from '@libs/filterInputs';
import { Plugin } from '@typings/plugin';
import { CheerioAPI, load as parseHTML } from 'cheerio';
import { defaultCover } from '@libs/defaultCover';
import { NovelStatus } from '@libs/novelStatus';
import dayjs from 'dayjs';

const includesAny = (str: string, keywords: string[]) =>
  new RegExp(keywords.join('|')).test(str);

interface MadaraOptions {
  useNewChapterEndpoint?: boolean;
  lang?: string;
  orderBy?: string;
  versionIncrements?: number;
}

export interface MadaraMetadata {
  id: string;
  sourceSite: string;
  sourceName: string;
  options?: MadaraOptions;
  filters?: any;
}

class MadaraPlugin implements Plugin.PluginBase {
  id: string;
  name: string;
  icon: string;
  site: string;
  version: string;
  options?: MadaraOptions;
  filters?: Filters | undefined;

  constructor(metadata: MadaraMetadata) {
    this.id = metadata.id;
    this.name = metadata.sourceName;
    this.icon = `multisrc/madara/${metadata.id.toLowerCase()}.png`;
    this.site = metadata.sourceSite;
    const versionIncrements = metadata.options?.versionIncrements || 0;
    this.version = `1.0.${1 + versionIncrements}`;
    this.options = metadata.options;
    this.filters = metadata.filters;
  }

  getHostname(url: string): string {
    return url.split('/')[2];
  }

  async getCheerio(url: string): Promise<CheerioAPI> {
    const r = await fetchApi(url);
    if (!r.ok)
      throw new Error(
        'Could not reach site (' + r.status + ') try to open in webview.',
      );
    const $ = parseHTML(await r.text());
    const title = $('title').text().trim();
    if (
      this.getHostname(url) != this.getHostname(r.url) ||
      title == 'Bot Verification' ||
      title == 'You are being redirected...' ||
      title == 'Un instant...' ||
      title == 'Just a moment...' ||
      title == 'Redirecting...'
    )
      throw new Error('Captcha error, please open in webview');
    return $;
  }

  parseNovels(loadedCheerio: CheerioAPI): Plugin.NovelItem[] {
    const novels: Plugin.NovelItem[] = [];

    loadedCheerio('.manga-title-badges').remove();

    loadedCheerio('.page-item-detail, .c-tabs-item__content').each(
      (index, element) => {
        const novelName = loadedCheerio(element)
          .find('.post-title')
          .text()
          .trim();
        const novelUrl =
          loadedCheerio(element).find('.post-title').find('a').attr('href') ||
          '';
        if (!novelName || !novelUrl) return;
        const image = loadedCheerio(element).find('img');
        const novelCover = image.attr('data-src') || image.attr('src');
        const novel: Plugin.NovelItem = {
          name: novelName,
          cover: novelCover,
          path: novelUrl.replace(this.site, ''),
        };
        novels.push(novel);
      },
    );

    return novels;
  }

  async popularNovels(
    pageNo: number,
    {
      filters,
      showLatestNovels,
    }: Plugin.PopularNovelsOptions<typeof this.filters>,
  ): Promise<Plugin.NovelItem[]> {
    let url = this.site + '/page/' + pageNo + '/?s=&post_type=wp-manga';
    if (!filters) filters = {};
    if (showLatestNovels) url += '&m_orderby=latest';
    for (const key in filters) {
      if (typeof filters[key].value === 'object')
        for (const value of filters[key].value as string[])
          url += `&${key}=${value}`;
      else if (filters[key].value) url += `&${key}=${filters[key].value}`;
    }
    const loadedCheerio = await this.getCheerio(url);
    return this.parseNovels(loadedCheerio);
  }

  async parseNovel(novelPath: string): Promise<Plugin.SourceNovel> {
    const body = await fetchApi(this.site + novelPath).then(res => res.text());
    let loadedCheerio = parseHTML(body);

    loadedCheerio('.manga-title-badges, #manga-title span').remove();
    const novel: Plugin.SourceNovel = {
      path: novelPath,
      name:
        loadedCheerio('.post-title h1').text().trim() ||
        loadedCheerio('#manga-title h1').text(),
    };

    novel.cover =
      loadedCheerio('.summary_image > a > img').attr('data-lazy-src') ||
      loadedCheerio('.summary_image > a > img').attr('data-src') ||
      loadedCheerio('.summary_image > a > img').attr('src') ||
      loadedCheerio('.summary_image > a > img').attr('src') ||
      defaultCover;

    loadedCheerio('.post-content_item, .post-content').each(function () {
      const detailName = loadedCheerio(this).find('h5').text().trim();
      const detail = loadedCheerio(this).find('.summary-content').text().trim();

      switch (detailName) {
        case 'Genre(s)':
        case 'Género(s)':
        case 'التصنيفات':
          novel.genres = detail;
          break;
        case 'Author(s)':
        case 'Autor(es)':
        case 'المؤلف':
        case 'المؤلف (ين)':
          novel.author = detail;
          break;
        case 'Status':
        case 'Estado':
          novel.status =
            detail.includes('OnGoing') || detail.includes('مستمرة')
              ? NovelStatus.Ongoing
              : NovelStatus.Completed;
          break;
      }
    });

    loadedCheerio('div.summary__content .code-block,script').remove();
    novel.summary =
      loadedCheerio('div.summary__content').text().trim() ||
      loadedCheerio('#tab-manga-about').text().trim() ||
      loadedCheerio('.post-content_item h5:contains("Summary")')
        .next()
        .text()
        .trim();
    const chapters: Plugin.ChapterItem[] = [];
    let html = '';

    if (this.options?.useNewChapterEndpoint) {
      html = await fetchApi(this.site + novelPath + 'ajax/chapters/', {
        method: 'POST',
      }).then(res => res.text());
    } else {
      const novelId =
        loadedCheerio('.rating-post-id').attr('value') ||
        loadedCheerio('#manga-chapters-holder').attr('data-id') ||
        '';

      const formData = new FormData();
      formData.append('action', 'manga_get_chapters');
      formData.append('manga', novelId);

      html = await fetchApi(this.site + 'wp-admin/admin-ajax.php', {
        method: 'POST',
        body: formData,
      }).then(res => res.text());
    }

    if (html !== '0') {
      loadedCheerio = parseHTML(html);
    }

    const totalChapters = loadedCheerio('.wp-manga-chapter').length;
    loadedCheerio('.wp-manga-chapter').each((chapterIndex, element) => {
      const chapterName = loadedCheerio(element).find('a').text().trim();

      let releaseDate = loadedCheerio(element)
        .find('span.chapter-release-date')
        .text()
        .trim();

      if (releaseDate) {
        releaseDate = this.parseData(releaseDate);
      } else {
        releaseDate = dayjs().format('LL');
      }

      let chapterUrl = loadedCheerio(element).find('a').attr('href') || '';

      chapters.push({
        name: chapterName,
        path: chapterUrl.replace(this.site, ''),
        releaseTime: releaseDate || null,
        chapterNumber: totalChapters - chapterIndex,
      });
    });

    novel.chapters = chapters.reverse();
    return novel;
  }

  async parseChapter(chapterPath: string): Promise<string> {
    const body = await fetchApi(this.site + chapterPath).then(res =>
      res.text(),
    );

    const loadedCheerio = parseHTML(body);
    const chapterText =
      loadedCheerio('.text-left').html() ||
      loadedCheerio('.text-right').html() ||
      loadedCheerio('.entry-content').html() ||
      loadedCheerio('.c-blog-post > div > div:nth-child(2)').html() ||
      '';

    return chapterText;
  }

  async searchNovels(
    searchTerm: string,
    pageNo?: number | undefined,
  ): Promise<Plugin.NovelItem[]> {
    const url =
      this.site +
      'page/' +
      pageNo +
      '/?s=' +
      searchTerm +
      '&post_type=wp-manga';
    const loadedCheerio = await this.getCheerio(url);
    return this.parseNovels(loadedCheerio);
  }

  fetchImage = fetchFile;

  parseData = (date: string) => {
    const dayJSDate = dayjs(); // today
    const timeAgo = date.match(/\d+/)?.[0] || '';
    const timeAgoInt = parseInt(timeAgo, 10);

    if (!timeAgo) return date; // there is no number!

    if (includesAny(date, ['detik', 'segundo', 'second', 'วินาที'])) {
      dayJSDate.subtract(timeAgoInt, 'second'); // go back N seconds
    } else if (
      includesAny(date, [
        'menit',
        'dakika',
        'min',
        'minute',
        'minuto',
        'นาที',
        'دقائق',
      ])
    ) {
      dayJSDate.subtract(timeAgoInt, 'minute'); // go back N minute
    } else if (
      includesAny(date, [
        'jam',
        'saat',
        'heure',
        'hora',
        'hour',
        'ชั่วโมง',
        'giờ',
        'ore',
        'ساعة',
        '小时',
      ])
    ) {
      dayJSDate.subtract(timeAgoInt, 'hours'); // go back N hours
    } else if (
      includesAny(date, [
        'hari',
        'gün',
        'jour',
        'día',
        'dia',
        'day',
        'วัน',
        'ngày',
        'giorni',
        'أيام',
        '天',
      ])
    ) {
      dayJSDate.subtract(timeAgoInt, 'days'); // go back N days
    } else if (includesAny(date, ['week', 'semana'])) {
      dayJSDate.subtract(timeAgoInt, 'week'); // go back N a week
    } else if (includesAny(date, ['month', 'mes'])) {
      dayJSDate.subtract(timeAgoInt, 'month'); // go back N months
    } else if (includesAny(date, ['year', 'año'])) {
      dayJSDate.subtract(timeAgoInt, 'year'); // go back N years
    } else {
      return date;
    }

    return dayJSDate.format('LL');
  };
}