jul11co-mangadl/handlers/h/nhentai.js

Jul11co Web Manga Downloader

var path = require('path');
var urlutil = require('url');
var utils = require('jul11co-wdt').Utils;

module.exports = {
  
  name: 'NHentai',
  website: 'http://nhentai.net',

  match: function(link, options) {
    return /nhentai\.net\//g.test(link);
  },

  dispatch: function(saver, $, page, options, callback) {

    if (options.group_by_site && !options.orig_output_dir) {
      options.orig_output_dir = options.output_dir;
      options.output_dir = path.join(options.output_dir, 'NHentai');
      saver.setMangaOutputDir(options.output_dir);
    }

    var state = saver.getStateData(page.url);
    if (state && state.done && !options.refresh_info) {
      if (options.cbz && state.chapter_images && state.output_dir
        && utils.directoryExists(path.join(options.output_dir, state.output_dir))) {
        return saver.createComicFile(page.output_dir, state.chapter_images, callback);
      } else {
        return callback();
      }
    }

    var updateDownloadState = function(cb) {

      if (options.chapter_url == '' || typeof options.chapter_url == 'undefined') {
        return cb();
      }

      // Check if all chapter pages are visited
      var all_chapter_pages_visited = true;
      for (var chapter_page_url in options.chapter_pages) {
        if (options.chapter_pages[chapter_page_url].visited == false) {
          all_chapter_pages_visited = false;
          break;
        }
      }

      if (all_chapter_pages_visited) {
        var chapter_images = [];
        for (var chapter_page_url in options.chapter_pages) {
          // var chapter_page = options.chapter_pages[chapter_page_url];
          var chapter_page = saver.getStateData(chapter_page_url);
          chapter_images = chapter_images.concat(chapter_page.images);
        }
        if (options.debug) console.log(chapter_images);

        var chapter_url = options.chapter_url;

        // Reset chapter_pages
        options.chapter_pages = {};
        options.chapter_url = '';
      
        saver.downloadMangaChapter({
          chapter_url: chapter_url,
          chapter_title: options.chapter_title,
          chapter_images: chapter_images,
          output_dir: options.chapter_output_dir
        }, options, cb);

      } else {

        // Get next unprocessed page in options.chapter_pages
        var next_page_url = '';
        for (var chapter_page_url in options.chapter_pages) {
          if (options.chapter_pages[chapter_page_url].visited == false) {
            next_page_url = chapter_page_url;
            break;
          }
        }

        var all_chapter_pages_count = 0;
        var visited_chapter_pages_count = 0;
        for (var chapter_page_url in options.chapter_pages) {
          all_chapter_pages_count++;
          if (options.chapter_pages[chapter_page_url].visited) visited_chapter_pages_count++;
        }

        console.log('Chapter page:', (visited_chapter_pages_count+1) + '/' + all_chapter_pages_count, next_page_url);

        // Process next page
        saver.processPage(next_page_url, options, cb);
      }
    }

    var linkExists = function(link, container) {
      var links = saver.getLinks($, page, container || 'body', {
        filters: [link]
      });
      return (links.length > 0);
    }

    var matchLinksArray = function(base_link, array, container) {
      var matched = false;
      for (var i = 0; i < array.length; i++) {
        if (linkExists(base_link + array[i].toLowerCase(), container || '#info')) {
          matched = true;
          break;
        }
      }
      return matched;
    }

    if ($('#info-block').length) {
      console.log('----');
      console.log('Gallery page: ' + page.url);

      var page_script = '';
      $('script').each(function() {
        page_script += $(this).html();
      });

      var gallery_info = null;
      if (page_script) {
        var gallery_info_str = utils.extractSubstring(page_script, 'var gallery = new N.gallery(', ');');
        try {
          gallery_info = JSON.parse(gallery_info_str);
        } catch(e) {
          console.log(e);
        }
      }

      var manga_title = $('#info h1').first().text().trim();
      if (gallery_info && gallery_info['title']) {
        manga_title = gallery_info['title']['pretty'] || gallery_info['title']['english'] || gallery_info['title']['japanese'];
      }
      manga_title = utils.replaceAll(manga_title, '/', '-');
      console.log('Gallery: ' + manga_title);

      // Filters
      if (options.title && manga_title.indexOf(options.title) == -1) {
        console.log('Title not match');
        return callback();
      }
      if (options.language && !linkExists('/language/' + options.language.toLowerCase(), '#info')) {
        console.log('Language not match');
        return callback();
      }
      if (options.languages && typeof options.languages == 'string') {
        options.languages = options.languages.split(',');
      }
      if (options.languages && Array.isArray(options.languages)) {
        if (!matchLinksArray('/language/', options.languages, '#info')) {
          console.log('Language not match (required: ' + options.languages.join(',') + ')');
          return callback();
        }
      }
      if (options.category && !linkExists('/category/' + options.category.toLowerCase(), '#info')) {
        console.log('Category not match');
        return callback();
      }
      if (options.tag && !linkExists('/tag/' + options.tag.toLowerCase(), '#info')) {
        console.log('Tag not match');
        return callback();
      }
      if (options.artist && !linkExists('/artist/' + options.artist.toLowerCase(), '#info')) {
        console.log('Artist not match');
        return callback();
      }

      if (options.auto_manga_dir && !options.batch_download) {
        options.output_dir = path.join(options.output_dir, manga_title);
        saver.deleteStateData(page.url);
        saver.setMangaOutputDir(options.output_dir);
      } else if (/*options.auto_manga_dir && */options.batch_download) {
        var manga_output_dir = path.join(options.batch_output_dir, manga_title);
        saver.deleteStateData(page.url);
        saver.setMangaOutputDir(manga_output_dir, {save_old_state: true});
        options.output_dir = manga_output_dir;
      }

      if (saver.isDone(page.url) && !options.refresh_info) {
        return callback();
      }

      saver.updateStateData('url', page.url);
      if (options.save_index_html) {
        saver.saveHtmlSync(path.join(options.output_dir, 'index.html'), $.html());
      }
      var manga_info = this.getMangaInfo($, page, options);
      if (gallery_info && gallery_info['title']) {
        manga_info.name = gallery_info['title']['pretty'] || gallery_info['title']['english'] || gallery_info['title']['japanese'];
        manga_info.japanese_name = gallery_info['title']['japanese'];
        manga_info.english_name = gallery_info['title']['english']; 
      }
      if (manga_info && manga_info.url) {
        saver.saveJsonSync(path.join(options.output_dir, 'manga.json'), manga_info);
      }

      options.chapter_url = page.url;
      options.chapter_title = manga_title;

      var chapter_url_obj = urlutil.parse(options.chapter_url);
      var chapter_output_dir_name = path.basename(chapter_url_obj.pathname);
      options.chapter_output_dir = path.join(options.output_dir, chapter_output_dir_name);

      if (gallery_info) {
        saver.saveJsonSync(path.join(options.output_dir, 'gallery.json'), gallery_info);
      }

      if (gallery_info && gallery_info['images'] && gallery_info['images']['pages']) {
        var num_pages = gallery_info['num_pages'];
        var media_type = {j:"jpg", p:"png", g:"gif"};
        var chapter_images = [];

        gallery_info['images']['pages'].forEach(function(page,idx) {
          chapter_images.push({
            src: "https://i.nhentai.net/galleries/" + gallery_info['media_id'] + "/" + (idx+1) + "." + media_type[page.t],
            file: (idx+1) + "." + media_type[page.t],
            width: page.w,
            height: page.h
          });
        });

        saver.downloadMangaChapter({
          chapter_url: options.chapter_url,
          chapter_title: options.chapter_title,
          chapter_images: chapter_images,
          output_dir: options.chapter_output_dir
        }, options, function(err) {
          if (err) return callback(err);

          saver.setStateData('last_update', new Date());
          callback();
        });

      } else {

        saver.fixLinks($, page, '#thumbnail-container');
        
        var links = [];
        $('#thumbnail-container a.gallerythumb').each(function() {
          links.push($(this).attr('href'));
        });

        if (typeof options.chapter_pages == 'undefined') {
          // Init data holder for chapter pages in options (passed through all callback)
          options.chapter_pages = {};
        }

        for (var i = 0; i < links.length; i++) {
          var chapter_page_link = links[i];
          if (typeof options.chapter_pages[chapter_page_link] == 'undefined') {
            var chapter_page_cache = saver.getStateData(chapter_page_link);
            if (chapter_page_cache && chapter_page_cache.visited && chapter_page_cache.images) {
              options.chapter_pages[chapter_page_link] = {
                visited: true,
                // images: chapter_page_cache.images
              };
            }
            else {
              options.chapter_pages[chapter_page_link] = {
                visited: false,
                // images: []
              };
            }
          }
        }

        updateDownloadState(callback);
      }
    } else if ($('#image-container').length) {
     
      if (typeof options.chapter_pages != 'undefined' 
        && typeof options.chapter_pages[page.url] != 'undefined') {
        options.chapter_pages[page.url].visited = true;
      } else {
        console.log('Wrong state! This page not included in chapter links');
        return callback();
      }

      // Get images on current page
      var images = saver.getImages($, page, '#image-container');
      if (options.debug) console.log(images);

      saver.updateStateData(page.url, {images: images});

      // Save to options
      // options.chapter_pages[page.url].images = options.chapter_pages[page.url].images.concat(images);

      updateDownloadState(callback);

    } else if ($('.index-container .gallery').length) {
      
      options.paging_links = options.paging_links || {};
      if (options.paging_links[page.url]) {
        return callback();
      }

      options.paging_links[page.url] = 1;

      console.log('-----');
      console.log('Gallery list: ' + page.url);

      options.batch_download = true;
      if (!options.batch_url) {
        options.batch_url = page.url;
      }
      if (!options.batch_output_dir) {
        options.batch_output_dir = options.output_dir;
      }
      if (options.batch_output_dir != options.output_dir) {
        saver.deleteStateData(page.url);
        saver.setMangaOutputDir(options.batch_output_dir, {save_old_state: true});
        options.output_dir = options.batch_output_dir;
      }

      if (!saver.getStateData('url')) {
        saver.updateStateData('url', page.url);
      }

      var gallery_links = saver.getLinks($, page, '.gallery', {
        filters: ['https://nhentai.net/g/']
      });

      var paging_links = saver.getLinks($, page, '.pagination');
      
      saver.downloadMangaList(gallery_links, options, function(err) {
        if (err) return callback(err);
        
        saver.setMangaOutputDir(options.batch_output_dir, {save_old_state: true});
        options.output_dir = options.batch_output_dir;
        gallery_links.forEach(function(link) {
          if (!saver.isVisited(link)) saver.setVisited(link);
        });
        saver.setStateData('last_update', new Date());

        if (options.all_pages && paging_links.length > 0) {
          if (options.refresh_info) {
            paging_links = paging_links.filter(function(link) {
              return !options.paging_links[link];
            });
            paging_links.forEach(function(link) {
              saver.updateStateData(link, {visited: 0});
            });
          } else {
            paging_links = paging_links.filter(function(link) {
              return !saver.isVisited(link);
            });
          }
          saver.processPages(paging_links, options, callback);
        } else {
          callback();
        }
      });
    } else {
      callback();
    }
  },

  getMangaInfo: function($, page, options) {
    var manga_info = {};
    if (page.url.indexOf('/g/') != -1 && $('#info-block').length) {
      manga_info.url = page.url;
      manga_info.name = $('#info-block #info h1').first().text().trim();
      manga_info.subtitle = $('#info-block #info h2').first().text().trim();

      manga_info.cover_image = $('#cover img').first().attr('data-src');
      // manga_info.description = $('.manga-detail .detail .content').text().trim();

      $('#info-block #info #tags a.tag span.count').remove();
      $('#info-block #info #tags a.tag').each(function() {
        var tag_url = $(this).attr('href');
        var tag_name = $(this).text().trim();
        if (tag_url.indexOf('/parody/') != -1) {
          manga_info.parodies = manga_info.parodies || [];
          manga_info.parodies.push({
            name: tag_name,
            url: tag_url
          });
        } else if (tag_url.indexOf('/character/') != -1) {
          manga_info.characters = manga_info.characters || [];
          manga_info.characters.push({
            name: tag_name,
            url: tag_url
          });
        } else if (tag_url.indexOf('/tag/') != -1) {
          manga_info.tags = manga_info.tags || [];
          manga_info.tags.push({
            name: tag_name,
            url: tag_url
          });
        } else if (tag_url.indexOf('/artist/') != -1) {
          manga_info.artists = manga_info.artists || [];
          manga_info.artists.push({
            name: tag_name,
            url: tag_url
          });
        } else if (tag_url.indexOf('/group/') != -1) {
          manga_info.groups = manga_info.groups || [];
          manga_info.groups.push({
            name: tag_name,
            url: tag_url
          });
        } else if (tag_url.indexOf('/language/') != -1) {
          if (tag_name != 'translated') {
            manga_info.language = {
              name: tag_name,
              url: tag_url
            };
          }
        } else if (tag_url.indexOf('/category/') != -1) {
          manga_info.categories = manga_info.categories || [];
          manga_info.categories.push({
            name: tag_name,
            url: tag_url
          });
        }
      });

      var added = $('#info-block #info').find('time').attr('datetime');
      manga_info.added = new Date(added);

      if (options.with_chapters) {
        manga_info.chapter_url = manga_info.url;
        manga_info.chapter_title = manga_info.name;

        manga_info.chapters = [];
        manga_info.chapters.push({
          url: manga_info.url,
          title: manga_info.name
        });
      }
      manga_info.chapter_count = 1;

      // manga_info.read_url = $('#cover a').attr('href');

      if (options.verbose) {
        console.log('Manga:');
        console.log('    Name:', manga_info.name);
        console.log('    Cover image:', manga_info.cover_image);
        // console.log('    Description:', manga_info.description);
        console.log('    Authors:', manga_info.authors);
        console.log('    Genres:', manga_info.genres);
        console.log('    Status:', manga_info.status);
        console.log('    Chapter count:', manga_info.chapter_count);
      }

      if (options.with_chapter_pages) {

        var links = [];
        $('#thumbnail-container a.gallerythumb').each(function() {
          links.push($(this).attr('href'));
        });

        manga_info.chapter_pages = links.map(function(link_url) {
          return { url: link_url };
        });
      }
    }
    return manga_info;
  }
}