181 lines
7.5 KiB
Java
181 lines
7.5 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.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.prepareDesktopJsonBuilder;
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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.InfoItem;
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import org.schabi.newpipe.extractor.MultiInfoItemsCollector;
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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.ChannelTabExtractor;
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import org.schabi.newpipe.extractor.downloader.Downloader;
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import org.schabi.newpipe.extractor.exceptions.ExtractionException;
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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 java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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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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public class YoutubeChannelVideosTabExtractor extends ChannelTabExtractor {
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private final JsonObject tabRenderer;
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private final String channelName;
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private final String channelUrl;
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public YoutubeChannelVideosTabExtractor(final StreamingService service,
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final ListLinkHandler linkHandler,
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final JsonObject tabRenderer,
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final String channelName,
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final String channelUrl) {
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super(service, linkHandler);
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this.tabRenderer = tabRenderer;
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this.channelName = channelName;
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this.channelUrl = channelUrl;
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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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// nothing to do, all data was already fetched and is stored in the link handler
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}
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@Nonnull
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@Override
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public InfoItemsPage<InfoItem> getInitialPage() throws IOException, ExtractionException {
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final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
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final JsonObject tabContent = tabRenderer.getObject("content");
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JsonArray items = tabContent
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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").getArray("items");
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if (items.isEmpty()) {
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items = tabContent.getObject("richGridRenderer").getArray("contents");
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}
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final List<String> channelIds = new ArrayList<>();
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channelIds.add(channelName);
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channelIds.add(channelUrl);
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final JsonObject continuation = collectStreamsFrom(collector, items, channelIds);
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return new InfoItemsPage<>(collector, getNextPageFrom(continuation, channelIds));
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}
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@Override
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public InfoItemsPage<InfoItem> getPage(final Page page)
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throws IOException, 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 MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
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final JsonObject ajaxJson = getJsonPostResponse("browse", page.getBody(),
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getExtractorLocalization());
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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)
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throws IOException, 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(StandardCharsets.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 MultiInfoItemsCollector 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("richItemRenderer")) {
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collector.commit(new YoutubeStreamInfoItemExtractor(
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video.getObject("richItemRenderer")
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.getObject("content").getObject("videoRenderer"), 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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}
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