307 lines
12 KiB
Java
307 lines
12 KiB
Java
package org.schabi.newpipe.extractor.services.youtube.extractors;
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import com.grack.nanojson.JsonArray;
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import com.grack.nanojson.JsonObject;
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import com.grack.nanojson.JsonParser;
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import com.grack.nanojson.JsonParserException;
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import org.jsoup.nodes.Document;
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import org.schabi.newpipe.extractor.StreamingService;
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import org.schabi.newpipe.extractor.channel.ChannelExtractor;
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import org.schabi.newpipe.extractor.downloader.Downloader;
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import org.schabi.newpipe.extractor.downloader.Response;
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import org.schabi.newpipe.extractor.exceptions.ExtractionException;
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import org.schabi.newpipe.extractor.exceptions.ParsingException;
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import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
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import org.schabi.newpipe.extractor.localization.TimeAgoParser;
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import org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeParsingHelper;
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import org.schabi.newpipe.extractor.stream.StreamInfoItem;
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import org.schabi.newpipe.extractor.stream.StreamInfoItemsCollector;
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import org.schabi.newpipe.extractor.utils.Utils;
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import java.io.IOException;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.annotation.Nonnull;
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import static org.schabi.newpipe.extractor.utils.Utils.HTTP;
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import static org.schabi.newpipe.extractor.utils.Utils.HTTPS;
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/*
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* Created by Christian Schabesberger on 25.07.16.
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*
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* Copyright (C) Christian Schabesberger 2018 <chris.schabesberger@mailbox.org>
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* YoutubeChannelExtractor.java is part of NewPipe.
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*
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* NewPipe is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* NewPipe is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
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*/
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@SuppressWarnings("WeakerAccess")
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public class YoutubeChannelExtractor extends ChannelExtractor {
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/*package-private*/ static final String CHANNEL_URL_BASE = "https://www.youtube.com/channel/";
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private JsonObject initialData;
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public YoutubeChannelExtractor(StreamingService service, ListLinkHandler linkHandler) {
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super(service, linkHandler);
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}
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@Override
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public void onFetchPage(@Nonnull Downloader downloader) throws IOException, ExtractionException {
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final String url = super.getUrl() + "/videos?pbj=1";
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JsonArray ajaxJson;
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Map<String, List<String>> headers = new HashMap<>();
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headers.put("X-YouTube-Client-Name", Collections.singletonList("1"));
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// Use the hardcoded client version first to get JSON with a structure we know
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// TODO: Use YoutubeParsingHelper.getClientVersion() as fallback
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headers.put("X-YouTube-Client-Version",
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Collections.singletonList(YoutubeParsingHelper.HARDCODED_CLIENT_VERSION));
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final String response = getDownloader().get(url, headers, getExtractorLocalization()).responseBody();
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if (response.length() < 50) { // ensure to have a valid response
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throw new ParsingException("Could not parse json data for next streams");
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}
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try {
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ajaxJson = JsonParser.array().from(response);
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} catch (JsonParserException e) {
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throw new ParsingException("Could not parse json data for next streams", e);
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}
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initialData = ajaxJson.getObject(1).getObject("response");
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}
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@Override
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public String getNextPageUrl() throws ExtractionException {
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return getNextPageUrlFrom(getVideoTab().getObject("content").getObject("sectionListRenderer")
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.getArray("contents").getObject(0).getObject("itemSectionRenderer")
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.getArray("contents").getObject(0).getObject("gridRenderer").getArray("continuations"));
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}
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@Nonnull
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@Override
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public String getUrl() throws ParsingException {
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try {
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return CHANNEL_URL_BASE + getId();
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} catch (ParsingException e) {
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return super.getUrl();
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}
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}
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@Nonnull
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@Override
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public String getId() throws ParsingException {
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try {
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return initialData.getObject("header").getObject("c4TabbedHeaderRenderer").getString("channelId");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel id", e);
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}
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}
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@Nonnull
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@Override
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public String getName() throws ParsingException {
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try {
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return initialData.getObject("header").getObject("c4TabbedHeaderRenderer").getString("title");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel name", e);
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}
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}
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@Override
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public String getAvatarUrl() throws ParsingException {
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try {
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return initialData.getObject("header").getObject("c4TabbedHeaderRenderer").getObject("avatar")
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.getArray("thumbnails").getObject(0).getString("url");
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} catch (Exception e) {
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throw new ParsingException("Could not get avatar", e);
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}
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}
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@Override
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public String getBannerUrl() throws ParsingException {
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try {
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String url = null;
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try {
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url = initialData.getObject("header").getObject("c4TabbedHeaderRenderer").getObject("banner")
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.getArray("thumbnails").getObject(0).getString("url");
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} catch (Exception ignored) {}
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if (url == null || url.contains("s.ytimg.com") || url.contains("default_banner")) {
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return null;
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}
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// the first characters of the banner URLs are different for each channel and some are not even valid URLs
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if (url.startsWith("//")) {
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url = url.substring(2);
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}
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if (url.startsWith(HTTP)) {
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url = Utils.replaceHttpWithHttps(url);
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} else if (!url.startsWith(HTTPS)) {
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url = HTTPS + url;
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}
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return url;
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} catch (Exception e) {
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throw new ParsingException("Could not get banner", e);
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}
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}
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@Override
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public String getFeedUrl() throws ParsingException {
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try {
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return YoutubeParsingHelper.getFeedUrlFrom(getId());
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} catch (Exception e) {
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throw new ParsingException("Could not get feed url", e);
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}
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}
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@Override
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public long getSubscriberCount() throws ParsingException {
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final JsonObject subscriberInfo = initialData.getObject("header").getObject("c4TabbedHeaderRenderer").getObject("subscriberCountText");
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if (subscriberInfo != null) {
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try {
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return Utils.mixedNumberWordToLong(subscriberInfo.getArray("runs").getObject(0).getString("text"));
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} catch (NumberFormatException e) {
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throw new ParsingException("Could not get subscriber count", e);
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}
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} else {
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// If the element is null, the channel have the subscriber count disabled
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return -1;
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}
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}
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@Override
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public String getDescription() throws ParsingException {
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try {
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return initialData.getObject("metadata").getObject("channelMetadataRenderer").getString("description");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel description", e);
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}
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}
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@Nonnull
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@Override
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public InfoItemsPage<StreamInfoItem> getInitialPage() throws ExtractionException {
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StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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JsonArray videos = getVideoTab().getObject("content").getObject("sectionListRenderer").getArray("contents")
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.getObject(0).getObject("itemSectionRenderer").getArray("contents").getObject(0)
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.getObject("gridRenderer").getArray("items");
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collectStreamsFrom(collector, videos);
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return new InfoItemsPage<>(collector, getNextPageUrl());
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getPage(String pageUrl) throws IOException, ExtractionException {
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if (pageUrl == null || pageUrl.isEmpty()) {
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throw new ExtractionException(new IllegalArgumentException("Page url is empty or null"));
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}
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// Unfortunately, we have to fetch the page even if we are only getting next streams,
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// as they don't deliver enough information on their own (the channel name, for example).
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fetchPage();
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StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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JsonArray ajaxJson;
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Map<String, List<String>> headers = new HashMap<>();
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headers.put("X-YouTube-Client-Name", Collections.singletonList("1"));
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// Use the hardcoded client version first to get JSON with a structure we know
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// TODO: Use YoutubeParsingHelper.getClientVersion() as fallback
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headers.put("X-YouTube-Client-Version",
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Collections.singletonList(YoutubeParsingHelper.HARDCODED_CLIENT_VERSION));
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final String response = getDownloader().get(pageUrl, headers, getExtractorLocalization()).responseBody();
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if (response.length() < 50) { // ensure to have a valid response
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throw new ParsingException("Could not parse json data for next streams");
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}
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try {
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ajaxJson = JsonParser.array().from(response);
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} catch (JsonParserException e) {
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throw new ParsingException("Could not parse json data for next streams", e);
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}
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JsonObject sectionListContinuation = ajaxJson.getObject(1).getObject("response")
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.getObject("continuationContents").getObject("gridContinuation");
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collectStreamsFrom(collector, sectionListContinuation.getArray("items"));
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return new InfoItemsPage<>(collector, getNextPageUrlFrom(sectionListContinuation.getArray("continuations")));
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}
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private String getNextPageUrlFrom(JsonArray continuations) {
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if (continuations == null) {
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return "";
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}
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JsonObject nextContinuationData = continuations.getObject(0).getObject("nextContinuationData");
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String continuation = nextContinuationData.getString("continuation");
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String clickTrackingParams = nextContinuationData.getString("clickTrackingParams");
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return "https://www.youtube.com/browse_ajax?ctoken=" + continuation + "&continuation=" + continuation
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+ "&itct=" + clickTrackingParams;
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}
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private void collectStreamsFrom(StreamInfoItemsCollector collector, JsonArray videos) throws ParsingException {
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collector.reset();
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final String uploaderName = getName();
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final String uploaderUrl = getUrl();
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final TimeAgoParser timeAgoParser = getTimeAgoParser();
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for (Object video : videos) {
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if (((JsonObject) video).getObject("gridVideoRenderer") != null) {
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collector.commit(new YoutubeStreamInfoItemExtractor(
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((JsonObject) video).getObject("gridVideoRenderer"), timeAgoParser) {
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@Override
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public String getUploaderName() {
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return uploaderName;
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}
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@Override
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public String getUploaderUrl() {
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return uploaderUrl;
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}
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});
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}
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}
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}
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private JsonObject getVideoTab() throws ParsingException {
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JsonArray tabs = initialData.getObject("contents").getObject("twoColumnBrowseResultsRenderer")
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.getArray("tabs");
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JsonObject videoTab = null;
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for (Object tab : tabs) {
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if (((JsonObject) tab).getObject("tabRenderer") != null) {
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if (((JsonObject) tab).getObject("tabRenderer").getString("title").equals("Videos")) {
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videoTab = ((JsonObject) tab).getObject("tabRenderer");
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break;
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}
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}
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}
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if (videoTab == null) {
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throw new ParsingException("Could not find Videos tab");
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}
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return videoTab;
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}
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}
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