234 lines
8.8 KiB
Java
234 lines
8.8 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 org.schabi.newpipe.extractor.ListExtractor;
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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.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.playlist.PlaylistExtractor;
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import org.schabi.newpipe.extractor.services.youtube.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.JsonUtils;
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import java.io.IOException;
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import java.util.Collections;
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import java.util.List;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.extractCookieValue;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getJsonResponse;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getResponse;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getUrlFromNavigationEndpoint;
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import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
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/**
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* A {@link YoutubePlaylistExtractor} for a mix (auto-generated playlist).
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* It handles URLs in the format of
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* {@code youtube.com/watch?v=videoId&list=playlistId}
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*/
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public class YoutubeMixPlaylistExtractor extends PlaylistExtractor {
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/**
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* YouTube identifies mixes based on this cookie. With this information it can generate
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* continuations without duplicates.
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*/
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public static final String COOKIE_NAME = "VISITOR_INFO1_LIVE";
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private JsonObject initialData;
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private JsonObject playlistData;
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private String cookieValue;
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public YoutubeMixPlaylistExtractor(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)
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throws IOException, ExtractionException {
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final String url = getUrl() + "&pbj=1";
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final Response response = getResponse(url, getExtractorLocalization());
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final JsonArray ajaxJson = JsonUtils.toJsonArray(response.responseBody());
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initialData = ajaxJson.getObject(3).getObject("response");
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playlistData = initialData.getObject("contents").getObject("twoColumnWatchNextResults")
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.getObject("playlist").getObject("playlist");
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cookieValue = extractCookieValue(COOKIE_NAME, response);
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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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final String name = YoutubeParsingHelper.getTextAtKey(playlistData, "title");
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if (isNullOrEmpty(name)) {
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throw new ParsingException("Could not get playlist name");
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}
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return name;
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}
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@Override
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public String getThumbnailUrl() throws ParsingException {
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try {
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return getThumbnailUrlFromPlaylistId(playlistData.getString("playlistId"));
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} catch (final Exception e) {
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try {
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//fallback to thumbnail of current video. Always the case for channel mix
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return getThumbnailUrlFromVideoId(
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initialData.getObject("currentVideoEndpoint").getObject("watchEndpoint")
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.getString("videoId"));
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} catch (final Exception ignored) {
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}
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throw new ParsingException("Could not get playlist thumbnail", e);
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}
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}
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@Override
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public String getBannerUrl() {
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return "";
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}
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@Override
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public String getUploaderUrl() {
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//Youtube mix are auto-generated
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return "";
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}
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@Override
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public String getUploaderName() {
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//Youtube mix are auto-generated by YouTube
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return "YouTube";
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}
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@Override
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public String getUploaderAvatarUrl() {
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//Youtube mix are auto-generated by YouTube
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return "";
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}
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@Override
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public boolean isUploaderVerified() throws ParsingException {
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return false;
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}
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@Override
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public long getStreamCount() {
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// Auto-generated playlist always start with 25 videos and are endless
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return ListExtractor.ITEM_COUNT_INFINITE;
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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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final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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collectStreamsFrom(collector, playlistData.getArray("contents"));
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return new InfoItemsPage<>(collector,
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new Page(getNextPageUrlFrom(playlistData), Collections.singletonMap(COOKIE_NAME, cookieValue)));
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}
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private String getNextPageUrlFrom(final JsonObject playlistJson) throws ExtractionException {
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final JsonObject lastStream = ((JsonObject) playlistJson.getArray("contents")
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.get(playlistJson.getArray("contents").size() - 1));
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if (lastStream == null || lastStream.getObject("playlistPanelVideoRenderer") == null) {
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throw new ExtractionException("Could not extract next page url");
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}
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return getUrlFromNavigationEndpoint(
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lastStream.getObject("playlistPanelVideoRenderer").getObject("navigationEndpoint"))
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+ "&pbj=1";
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getPage(final Page page)
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throws ExtractionException, IOException {
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if (page == null || isNullOrEmpty(page.getUrl())) {
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throw new IllegalArgumentException("Page url is empty or null");
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}
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if (!page.getCookies().containsKey(COOKIE_NAME)) {
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throw new IllegalArgumentException("Cooke '" + COOKIE_NAME + "' is missing");
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}
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final JsonArray ajaxJson = getJsonResponse(page, getExtractorLocalization());
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final JsonObject playlistJson =
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ajaxJson.getObject(3).getObject("response").getObject("contents")
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.getObject("twoColumnWatchNextResults").getObject("playlist")
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.getObject("playlist");
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final JsonArray allStreams = playlistJson.getArray("contents");
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// Sublist because youtube returns up to 24 previous streams in the mix
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// +1 because the stream of "currentIndex" was already extracted in previous request
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final List<Object> newStreams =
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allStreams.subList(playlistJson.getInt("currentIndex") + 1, allStreams.size());
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final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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collectStreamsFrom(collector, newStreams);
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return new InfoItemsPage<>(collector,
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new Page(getNextPageUrlFrom(playlistJson), page.getCookies()));
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}
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private void collectStreamsFrom(
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@Nonnull final StreamInfoItemsCollector collector,
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@Nullable final List<Object> streams) {
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if (streams == null) {
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return;
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}
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final TimeAgoParser timeAgoParser = getTimeAgoParser();
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for (final Object stream : streams) {
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if (stream instanceof JsonObject) {
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final JsonObject streamInfo = ((JsonObject) stream)
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.getObject("playlistPanelVideoRenderer");
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if (streamInfo != null) {
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collector.commit(new YoutubeStreamInfoItemExtractor(streamInfo, timeAgoParser));
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}
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}
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}
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}
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private String getThumbnailUrlFromPlaylistId(final String playlistId) throws ParsingException {
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final String videoId;
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if (playlistId.startsWith("RDMM")) {
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videoId = playlistId.substring(4);
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} else if (playlistId.startsWith("RDCMUC")) {
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throw new ParsingException("is channel mix");
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} else {
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videoId = playlistId.substring(2);
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}
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if (videoId.isEmpty()) {
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throw new ParsingException("videoId is empty");
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}
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return getThumbnailUrlFromVideoId(videoId);
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}
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private String getThumbnailUrlFromVideoId(final String videoId) {
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return "https://i.ytimg.com/vi/" + videoId + "/hqdefault.jpg";
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}
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@Nonnull
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@Override
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public String getSubChannelName() {
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return "";
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}
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@Nonnull
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@Override
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public String getSubChannelUrl() {
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return "";
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}
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@Nonnull
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@Override
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public String getSubChannelAvatarUrl() {
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return "";
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}
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}
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