483 lines
19 KiB
Java
483 lines
19 KiB
Java
package org.schabi.newpipe.extractor.services.youtube.extractors;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.addClientInfoHeaders;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.fixThumbnailUrl;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getJsonPostResponse;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getKey;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getValidJsonResponseBody;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.prepareDesktopJsonBuilder;
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import static org.schabi.newpipe.extractor.utils.Utils.EMPTY_STRING;
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import static org.schabi.newpipe.extractor.utils.Utils.UTF_8;
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import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
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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.JsonWriter;
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import org.schabi.newpipe.extractor.Page;
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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.ContentNotAvailableException;
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import org.schabi.newpipe.extractor.exceptions.ContentNotSupportedException;
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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.YoutubeParsingHelper;
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import org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeChannelLinkHandlerFactory;
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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.JsonUtils;
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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.ArrayList;
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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 javax.annotation.Nullable;
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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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public class YoutubeChannelExtractor extends ChannelExtractor {
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private JsonObject initialData;
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private JsonObject videoTab;
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/**
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* Some channels have response redirects and the only way to reliably get the id is by saving it
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* <p>
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* "Movies & Shows":
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* <pre>
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* UCuJcl0Ju-gPDoksRjK1ya-w ┐
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* UChBfWrfBXL9wS6tQtgjt_OQ ├ UClgRkhTL3_hImCAmdLfDE4g
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* UCok7UTQQEP1Rsctxiv3gwSQ ┘
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* </pre>
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*/
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private String redirectedChannelId;
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public YoutubeChannelExtractor(final StreamingService service,
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final 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 final Downloader downloader) throws IOException,
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ExtractionException {
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final String channelPath = super.getId();
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final String[] channelId = channelPath.split("/");
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String id = "";
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// If the url is an URL which is not a /channel URL, we need to use the
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// navigation/resolve_url endpoint of the InnerTube API to get the channel id. Otherwise,
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// we couldn't get information about the channel associated with this URL, if there is one.
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if (!channelId[0].equals("channel")) {
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final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(
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getExtractorLocalization(), getExtractorContentCountry())
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.value("url", "https://www.youtube.com/" + channelPath)
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.done())
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.getBytes(UTF_8);
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final JsonObject jsonResponse = getJsonPostResponse("navigation/resolve_url",
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body, getExtractorLocalization());
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if (!isNullOrEmpty(jsonResponse.getObject("error"))) {
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final JsonObject errorJsonObject = jsonResponse.getObject("error");
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final int errorCode = errorJsonObject.getInt("code");
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if (errorCode == 404) {
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throw new ContentNotAvailableException("This channel doesn't exist.");
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} else {
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throw new ContentNotAvailableException("Got error:\""
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+ errorJsonObject.getString("status") + "\": "
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+ errorJsonObject.getString("message"));
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}
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}
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final JsonObject endpoint = jsonResponse.getObject("endpoint");
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final String webPageType = endpoint.getObject("commandMetadata")
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.getObject("webCommandMetadata")
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.getString("webPageType", EMPTY_STRING);
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final JsonObject browseEndpoint = endpoint.getObject("browseEndpoint");
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final String browseId = browseEndpoint.getString("browseId", EMPTY_STRING);
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if (webPageType.equalsIgnoreCase("WEB_PAGE_TYPE_BROWSE")
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|| webPageType.equalsIgnoreCase("WEB_PAGE_TYPE_CHANNEL")
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&& !browseId.isEmpty()) {
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if (!browseId.startsWith("UC")) {
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throw new ExtractionException("Redirected id is not pointing to a channel");
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}
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id = browseId;
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redirectedChannelId = browseId;
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}
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} else {
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id = channelId[1];
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}
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JsonObject ajaxJson = null;
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int level = 0;
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while (level < 3) {
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final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(
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getExtractorLocalization(), getExtractorContentCountry())
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.value("browseId", id)
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.value("params", "EgZ2aWRlb3M%3D") // Equal to videos
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.done())
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.getBytes(UTF_8);
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final JsonObject jsonResponse = getJsonPostResponse("browse", body,
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getExtractorLocalization());
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if (!isNullOrEmpty(jsonResponse.getObject("error"))) {
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final JsonObject errorJsonObject = jsonResponse.getObject("error");
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final int errorCode = errorJsonObject.getInt("code");
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if (errorCode == 404) {
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throw new ContentNotAvailableException("This channel doesn't exist.");
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} else {
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throw new ContentNotAvailableException("Got error:\""
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+ errorJsonObject.getString("status") + "\": "
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+ errorJsonObject.getString("message"));
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}
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}
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final JsonObject endpoint = jsonResponse.getArray("onResponseReceivedActions")
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.getObject(0)
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.getObject("navigateAction")
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.getObject("endpoint");
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final String webPageType = endpoint.getObject("commandMetadata")
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.getObject("webCommandMetadata")
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.getString("webPageType", EMPTY_STRING);
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final String browseId = endpoint.getObject("browseEndpoint").getString("browseId",
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EMPTY_STRING);
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if (webPageType.equalsIgnoreCase("WEB_PAGE_TYPE_BROWSE")
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|| webPageType.equalsIgnoreCase("WEB_PAGE_TYPE_CHANNEL")
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&& !browseId.isEmpty()) {
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if (!browseId.startsWith("UC")) {
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throw new ExtractionException("Redirected id is not pointing to a channel");
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}
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id = browseId;
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redirectedChannelId = browseId;
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level++;
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} else {
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ajaxJson = jsonResponse;
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break;
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}
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}
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if (ajaxJson == null) {
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throw new ExtractionException("Could not fetch initial JSON data");
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}
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initialData = ajaxJson;
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YoutubeParsingHelper.defaultAlertsCheck(initialData);
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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 YoutubeChannelLinkHandlerFactory.getInstance().getUrl("channel/" + getId());
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} catch (final 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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final String channelId = initialData.getObject("header")
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.getObject("c4TabbedHeaderRenderer")
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.getString("channelId", EMPTY_STRING);
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if (!channelId.isEmpty()) {
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return channelId;
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} else if (!isNullOrEmpty(redirectedChannelId)) {
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return redirectedChannelId;
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} else {
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throw new ParsingException("Could not get channel id");
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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")
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.getString("title");
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} catch (final 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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final String url = initialData.getObject("header")
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.getObject("c4TabbedHeaderRenderer").getObject("avatar").getArray("thumbnails")
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.getObject(0).getString("url");
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return fixThumbnailUrl(url);
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} catch (final 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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final String url = initialData.getObject("header")
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.getObject("c4TabbedHeaderRenderer").getObject("banner").getArray("thumbnails")
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.getObject(0).getString("url");
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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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return fixThumbnailUrl(url);
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} catch (final 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 (final 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 c4TabbedHeaderRenderer = initialData.getObject("header")
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.getObject("c4TabbedHeaderRenderer");
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if (!c4TabbedHeaderRenderer.has("subscriberCountText")) {
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return UNKNOWN_SUBSCRIBER_COUNT;
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}
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try {
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return Utils.mixedNumberWordToLong(getTextFromObject(c4TabbedHeaderRenderer
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.getObject("subscriberCountText")));
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} catch (final NumberFormatException e) {
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throw new ParsingException("Could not get subscriber count", e);
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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")
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.getString("description");
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} catch (final 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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@Override
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public String getParentChannelName() {
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return "";
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}
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@Override
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public String getParentChannelUrl() {
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return "";
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}
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@Override
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public String getParentChannelAvatarUrl() {
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return "";
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}
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@Override
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public boolean isVerified() throws ParsingException {
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final JsonArray badges = initialData.getObject("header")
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.getObject("c4TabbedHeaderRenderer")
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.getArray("badges");
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return YoutubeParsingHelper.isVerified(badges);
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}
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@Nonnull
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@Override
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public InfoItemsPage<StreamInfoItem> getInitialPage() throws IOException, ExtractionException {
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final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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Page nextPage = null;
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if (getVideoTab() != null) {
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final JsonObject gridRenderer = getVideoTab().getObject("content")
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.getObject("sectionListRenderer")
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.getArray("contents").getObject(0).getObject("itemSectionRenderer")
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.getArray("contents").getObject(0).getObject("gridRenderer");
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final List<String> channelIds = new ArrayList<>();
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channelIds.add(getName());
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channelIds.add(getUrl());
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final JsonObject continuation = collectStreamsFrom(collector, gridRenderer
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.getArray("items"), channelIds);
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nextPage = getNextPageFrom(continuation, channelIds);
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}
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return new InfoItemsPage<>(collector, nextPage);
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getPage(final Page page) throws IOException,
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ExtractionException {
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if (page == null || isNullOrEmpty(page.getUrl())) {
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throw new IllegalArgumentException("Page doesn't contain an URL");
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}
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final List<String> channelIds = page.getIds();
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final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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final Map<String, List<String>> headers = new HashMap<>();
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addClientInfoHeaders(headers);
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final Response response = getDownloader().post(page.getUrl(), null, page.getBody(),
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getExtractorLocalization());
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final JsonObject ajaxJson = JsonUtils.toJsonObject(getValidJsonResponseBody(response));
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final JsonObject sectionListContinuation = ajaxJson.getArray("onResponseReceivedActions")
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.getObject(0)
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.getObject("appendContinuationItemsAction");
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final JsonObject continuation = collectStreamsFrom(collector, sectionListContinuation
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.getArray("continuationItems"), channelIds);
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return new InfoItemsPage<>(collector, getNextPageFrom(continuation, channelIds));
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}
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@Nullable
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private Page getNextPageFrom(final JsonObject continuations,
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final List<String> channelIds) throws IOException,
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ExtractionException {
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if (isNullOrEmpty(continuations)) {
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return null;
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}
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final JsonObject continuationEndpoint = continuations.getObject("continuationEndpoint");
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final String continuation = continuationEndpoint.getObject("continuationCommand")
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.getString("token");
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final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(getExtractorLocalization(),
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getExtractorContentCountry())
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.value("continuation", continuation)
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.done())
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.getBytes(UTF_8);
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return new Page(YOUTUBEI_V1_URL + "browse?key=" + getKey()
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+ DISABLE_PRETTY_PRINT_PARAMETER, null, channelIds, null, body);
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}
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/**
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* Collect streams from an array of items
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*
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* @param collector the collector where videos will be committed
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* @param videos the array to get videos from
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* @param channelIds the ids of the channel, which are its name and its URL
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* @return the continuation object
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*/
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private JsonObject collectStreamsFrom(@Nonnull final StreamInfoItemsCollector collector,
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@Nonnull final JsonArray videos,
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@Nonnull final List<String> channelIds) {
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collector.reset();
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final String uploaderName = channelIds.get(0);
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final String uploaderUrl = channelIds.get(1);
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final TimeAgoParser timeAgoParser = getTimeAgoParser();
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JsonObject continuation = null;
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for (final Object object : videos) {
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final JsonObject video = (JsonObject) object;
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if (video.has("gridVideoRenderer")) {
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collector.commit(new YoutubeStreamInfoItemExtractor(
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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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} else if (video.has("continuationItemRenderer")) {
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continuation = video.getObject("continuationItemRenderer");
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}
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}
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return continuation;
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}
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@Nullable
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private JsonObject getVideoTab() throws ParsingException {
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if (this.videoTab != null) {
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return this.videoTab;
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}
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final JsonArray tabs = initialData.getObject("contents")
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.getObject("twoColumnBrowseResultsRenderer")
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.getArray("tabs");
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JsonObject foundVideoTab = null;
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for (final Object tab : tabs) {
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if (((JsonObject) tab).has("tabRenderer")) {
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if (((JsonObject) tab).getObject("tabRenderer").getString("title",
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EMPTY_STRING).equals("Videos")) {
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foundVideoTab = ((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 (foundVideoTab == null) {
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throw new ContentNotSupportedException("This channel has no Videos tab");
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}
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final String messageRendererText = getTextFromObject(foundVideoTab.getObject("content")
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.getObject("sectionListRenderer").getArray("contents").getObject(0)
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.getObject("itemSectionRenderer").getArray("contents").getObject(0)
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.getObject("messageRenderer").getObject("text"));
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if (messageRendererText != null
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&& messageRendererText.equals("This channel has no videos.")) {
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return null;
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}
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this.videoTab = foundVideoTab;
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return foundVideoTab;
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}
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}
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