class NhentaiRipper extends AbstractHTMLRipper {

    private String albumTitle;
    private Document firstPage;

    // Thread pool for finding direct image links from "image" pages (html)
    private DownloadThreadPool nhentaiThreadPool = new DownloadThreadPool("nhentai");

    @Override
    public boolean hasQueueSupport() {
        return true;
    }

    @Override
    public boolean pageContainsAlbums(URL url) {
        Pattern pa = Pattern.compile("^https?://nhentai\\.net/tag/([a-zA-Z0-9_\\-]+)/?");
        Matcher ma = pa.matcher(url.toExternalForm());
        return ma.matches();
    }

    @Override
    public List<String> getAlbumsToQueue(Document doc) {
        List<String> urlsToAddToQueue = new ArrayList<>();
        for (Element elem : doc.select("a.cover")) {
            urlsToAddToQueue.add("https://" + getDomain() + elem.attr("href"));
        }
        return urlsToAddToQueue;
    }

    @Override
    public DownloadThreadPool getThreadPool() {
        return nhentaiThreadPool;
    }

    public NhentaiRipper(URL url) throws IOException {
        super(url);
    }

    @Override
    public String getDomain() {
        return "nhentai.net";
    }

    @Override
    public String getHost() {
        return "nhentai";
    }

    @Override
    public String getAlbumTitle(URL url) throws MalformedURLException {
        if (firstPage == null) {
            try {
                firstPage = Http.url(url).get();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        String title = firstPage.select("#info > h1").text();
        if (title == null) {
            return getAlbumTitle(url);
        }
        return "nhentai" + title;
    }

    public List<String> getTags(Document doc) {
        List<String> tags = new ArrayList<>();
        for (Element tag : doc.select("a.tag")) {
            String tagString = tag.attr("href").replaceAll("/tag/", "").replaceAll("/", "");
            LOGGER.info("Found tag: " + tagString);
            tags.add(tagString);
        }
        return tags;
    }

    @Override
    public String getGID(URL url) throws MalformedURLException {<FILL_FUNCTION_BODY>}

    @Override
    public Document getFirstPage() throws IOException {
        if (firstPage == null) {
            firstPage = Http.url(url).get();
        }

        String blacklistedTag = RipUtils.checkTags(Utils.getConfigStringArray("nhentai.blacklist.tags"), getTags(firstPage));
        if (blacklistedTag != null) {
            sendUpdate(RipStatusMessage.STATUS.DOWNLOAD_WARN, "Skipping " + url.toExternalForm() + " as it " +
                    "contains the blacklisted tag \"" + blacklistedTag + "\"");
            return null;
        }
        return firstPage;
    }

    @Override
    public List<String> getURLsFromPage(Document page) {
        List<String> imageURLs = new ArrayList<>();
        Elements thumbs = page.select("a.gallerythumb > img");
        for (Element el : thumbs) {
            imageURLs.add(el.attr("data-src").replaceAll("t\\.n", "i.n").replaceAll("t\\.", "."));
        }
        return imageURLs;
    }

    @Override
    public void downloadURL(URL url, int index) {
        addURLToDownload(url, getPrefix(index), "", this.url.toExternalForm(), null);
    }


}

        // Ex: https://nhentai.net/g/159174/
        Pattern p = Pattern.compile("^https?://nhentai\\.net/g/(\\d+).*$");
        Matcher m = p.matcher(url.toExternalForm());
        if (m.matches()) {
            // Return the text contained between () in the regex - 159174 in this case
            return m.group(1);
        }
        throw new MalformedURLException("Expected nhentai.net URL format: " +
                "nhentai.net/g/albumid - got " + url + " instead");
    
<methods>public boolean addURLToDownload(java.net.URL, java.io.File, java.lang.String, Map<java.lang.String,java.lang.String>, java.lang.Boolean) ,public boolean addURLToDownload(java.net.URL, java.io.File) ,public boolean canRip(java.net.URL) ,public void downloadCompleted(java.net.URL, java.io.File) ,public void downloadErrored(java.net.URL, java.lang.String) ,public void downloadExists(java.net.URL, java.io.File) ,public int getCompletionPercentage() ,public int getCount() ,public abstract java.lang.String getHost() ,public Document getNextPage(Document) throws java.io.IOException,public java.lang.String getStatusText() ,public void rip() throws java.io.IOException,public java.net.URL sanitizeURL(java.net.URL) throws java.net.MalformedURLException,public boolean saveText(java.net.URL, java.lang.String, java.lang.String, int) ,public void setWorkingDir(java.net.URL) throws java.io.IOException<variables>private Map<java.net.URL,java.io.File> itemsCompleted,private Map<java.net.URL,java.lang.String> itemsErrored,private Map<java.net.URL,java.io.File> itemsPending