/*
 * This file is part of FYReader.
 * FYReader is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * FYReader is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with FYReader.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Copyright (C) 2020 - 2022 fengyuecanzhu
 */

package xyz.fycz.myreader.webapi.crawler.read;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.TextNode;
import org.jsoup.select.Elements;

import java.util.ArrayList;

import xyz.fycz.myreader.entity.SearchBookBean;
import xyz.fycz.myreader.enums.LocalBookSource;
import xyz.fycz.myreader.greendao.entity.Book;
import xyz.fycz.myreader.greendao.entity.Chapter;
import xyz.fycz.myreader.model.mulvalmap.ConMVMap;
import xyz.fycz.myreader.webapi.crawler.base.BaseReadCrawler;
import xyz.fycz.myreader.webapi.crawler.base.BookInfoCrawler;

/**
 * 此小说源书籍详情页可添加推荐书籍，暂未开始做
 */
public class Du1DuReadCrawler extends BaseReadCrawler implements BookInfoCrawler {
    public static final String NAME_SPACE = "http://du1du.org";
    public static final String NOVEL_SEARCH = "http://du1du.org/search.htm?keyword={key}";
    public static final String CHARSET = "GBK";
    public static final String SEARCH_CHARSET = "utf-8";

    @Override
    public String getSearchLink() {
        return NOVEL_SEARCH;
    }

    @Override
    public String getCharset() {
        return CHARSET;
    }

    @Override
    public String getNameSpace() {
        return NAME_SPACE;
    }

    @Override
    public Boolean isPost() {
        return false;
    }

    @Override
    public String getSearchCharset() {
        return SEARCH_CHARSET;
    }

    /**
     * 从html中获取章节正文
     *
     * @param html
     * @return
     */
    public String getContentFormHtml(String html) {
        Document doc = Jsoup.parse(html);
        Element divContent = doc.getElementById("txtContent");
        StringBuilder sb = new StringBuilder();
        for (TextNode textNode : divContent.textNodes()) {
            sb.append(textNode.text());
            sb.append("\n");
        }
        String content = sb.toString();
        char c = 160;
        String spaec = "" + c;
        content = content.replace(spaec, "  ");
        return content;
    }

    /**
     * 从html中获取章节列表
     *
     * @param html
     * @return
     */
    public ArrayList<Chapter> getChaptersFromHtml(String html) {
        ArrayList<Chapter> chapters = new ArrayList<>();
        Document doc = Jsoup.parse(html);
        Element divList = doc.getElementById("chapters-list");
        Elements elementsByTag = divList.getElementsByTag("a");
        int i = 0;
        for (int j = 0; j < elementsByTag.size(); j++) {
            Element a = elementsByTag.get(j);
            String title = a.text();
            String url = a.attr("href");
            Chapter chapter = new Chapter();
            chapter.setNumber(i++);
            chapter.setTitle(title);
            chapter.setUrl(url);
            chapters.add(chapter);
        }
        return chapters;
    }

    /**
     * 从搜索html中得到书列表
     *
     * @param html
     * @return
     */
    public ConMVMap<SearchBookBean, Book> getBooksFromSearchHtml(String html) {
        ConMVMap<SearchBookBean, Book> books = new ConMVMap<>();
        Document doc = Jsoup.parse(html);
        Elements divs = doc.getElementsByClass("panel-body");
        Element div = divs.get(0);
        Elements lis = div.getElementsByClass("clearfix");
        for (int i = 1; i < lis.size(); i++) {
            Element li = lis.get(i);
            Book book = new Book();
            Elements info = li.getElementsByTag("div");
            book.setName(info.get(1).text());
            book.setInfoUrl(info.get(1).getElementsByTag("a").attr("href"));
            book.setChapterUrl(book.getInfoUrl() + "mulu.htm");
            book.setAuthor(info.get(3).text());
            book.setNewestChapterTitle(info.get(2).text());
            book.setType(info.get(0).text() + "小说");
            book.setUpdateDate(info.get(4).text());
            book.setSource(LocalBookSource.du1du.toString());
            SearchBookBean sbb = new SearchBookBean(book.getName(), book.getAuthor());
            books.add(sbb, book);
        }
        return books;
    }

    /**
     * 获取书籍详细信息
     *
     * @param book
     */
    public Book getBookInfo(String html, Book book) {
        Document doc = Jsoup.parse(html);
        Element img = doc.selectFirst("meta[property=og:image]");
        book.setImgUrl(img.attr("content"));
        Element desc = doc.selectFirst("meta[property=og:description]");
        book.setDesc(desc.attr("content"));
        Element type = doc.selectFirst("meta[property=og:novel:category]");
        book.setType(type.attr("content"));
        return book;
    }

}
