NewPipeExtractor/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeChannelTabExtractor....

435 lines
19 KiB
Java

package org.schabi.newpipe.extractor.services.youtube.extractors;
import com.grack.nanojson.JsonArray;
import com.grack.nanojson.JsonObject;
import com.grack.nanojson.JsonWriter;
import org.schabi.newpipe.extractor.InfoItem;
import org.schabi.newpipe.extractor.MultiInfoItemsCollector;
import org.schabi.newpipe.extractor.Page;
import org.schabi.newpipe.extractor.StreamingService;
import org.schabi.newpipe.extractor.channel.ChannelTabExtractor;
import org.schabi.newpipe.extractor.downloader.Downloader;
import org.schabi.newpipe.extractor.exceptions.ExtractionException;
import org.schabi.newpipe.extractor.exceptions.ParsingException;
import org.schabi.newpipe.extractor.linkhandler.ChannelTabs;
import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
import org.schabi.newpipe.extractor.localization.Localization;
import org.schabi.newpipe.extractor.services.youtube.YouTubeChannelHelper;
import org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeChannelTabLinkHandlerFactory;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.function.Consumer;
import static org.schabi.newpipe.extractor.services.youtube.YouTubeChannelHelper.ChannelResponseData;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
import static org.schabi.newpipe.extractor.services.youtube.YouTubeChannelHelper.getChannelResponse;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getJsonPostResponse;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getKey;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.prepareDesktopJsonBuilder;
import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.defaultAlertsCheck;
import static org.schabi.newpipe.extractor.services.youtube.YouTubeChannelHelper.resolveChannelId;
import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
public class YoutubeChannelTabExtractor extends ChannelTabExtractor {
private final boolean usePlaylist;
private JsonObject initialData;
private String channelId;
@Nullable
private String visitorData;
public YoutubeChannelTabExtractor(final StreamingService service,
final ListLinkHandler linkHandler) {
super(service, linkHandler);
usePlaylist = getName().equals(ChannelTabs.SHORTS);
}
private String getParams() throws ParsingException {
switch (getName()) {
case ChannelTabs.PLAYLISTS:
return "EglwbGF5bGlzdHPyBgQKAkIA";
case ChannelTabs.LIVESTREAMS:
return "EgdzdHJlYW1z8gYECgJ6AA%3D%3D";
case ChannelTabs.SHORTS:
return "EgZzaG9ydHPyBgUKA5oBAA%3D%3D";
case ChannelTabs.CHANNELS:
return "EghjaGFubmVsc_IGBAoCUgA%3D";
}
throw new ParsingException("tab " + getName() + " not supported");
}
@Override
public void onFetchPage(@Nonnull final Downloader downloader) throws IOException,
ExtractionException {
channelId = resolveChannelId(super.getId());
if (usePlaylist) {
// Get shorts from YouTube's internal playlist (ID: UUSH + channel id without UC prefix)
if (!channelId.startsWith("UC")) {
throw new ParsingException("channel ID does not start with 'UC'");
}
final String browseId = "VLUUSH" + channelId.substring(2);
final Localization localization = getExtractorLocalization();
final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(localization,
getExtractorContentCountry())
.value("browseId", browseId)
.done())
.getBytes(StandardCharsets.UTF_8);
initialData = getJsonPostResponse("browse", body, localization);
defaultAlertsCheck(initialData);
} else {
final String params = getParams();
final ChannelResponseData data = getChannelResponse(channelId, params,
getExtractorLocalization(), getExtractorContentCountry());
initialData = data.responseJson;
channelId = data.channelId;
visitorData = initialData.getObject("responseContext").getString("visitorData");
}
}
@Nonnull
@Override
public String getUrl() throws ParsingException {
try {
return YoutubeChannelTabLinkHandlerFactory.getInstance().getUrl("channel/" + getId(),
Collections.singletonList(getName()), "");
} catch (final ParsingException e) {
return super.getUrl();
}
}
@Nonnull
@Override
public String getId() throws ParsingException {
if (!usePlaylist) {
final String id = initialData.getObject("header")
.getObject("c4TabbedHeaderRenderer")
.getString("channelId", "");
if (!id.isEmpty()) {
return id;
}
final Optional<String> carouselHeaderId = initialData
.getObject("header")
.getObject("carouselHeaderRenderer")
.getArray("contents")
.stream()
.filter(JsonObject.class::isInstance)
.map(JsonObject.class::cast)
.filter(itm -> itm.has("topicChannelDetailsRenderer"))
.findFirst()
.flatMap(itm ->
Optional.ofNullable(itm.getObject("topicChannelDetailsRenderer")
.getObject("navigationEndpoint")
.getObject("browseEndpoint")
.getString("browseId")));
if (carouselHeaderId.isPresent()) {
return carouselHeaderId.get();
}
}
if (!isNullOrEmpty(channelId)) {
return channelId;
} else {
throw new ParsingException("Could not get channel id");
}
}
protected String getChannelName() {
final String metadataName = initialData
.getObject("metadata")
.getObject("channelMetadataRenderer")
.getString("title");
if (!isNullOrEmpty(metadataName)) {
return metadataName;
}
return YouTubeChannelHelper.getChannelHeader(initialData)
.map(header -> {
final Object title = header.json.get("title");
if (title instanceof String) {
return (String) title;
} else if (title instanceof JsonObject) {
final String headerName = getTextFromObject((JsonObject) title);
if (!isNullOrEmpty(headerName)) {
return headerName;
}
}
return "";
}).orElse("");
}
@Nonnull
@Override
public InfoItemsPage<InfoItem> getInitialPage() throws IOException, ExtractionException {
final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
JsonArray items = new JsonArray();
if (usePlaylist) {
final JsonArray contents = initialData.getObject("contents")
.getObject("twoColumnBrowseResultsRenderer")
.getArray("tabs")
.getObject(0)
.getObject("tabRenderer")
.getObject("content")
.getObject("sectionListRenderer")
.getArray("contents");
final Optional<JsonObject> videoPlaylistObject = contents.stream()
.filter(JsonObject.class::isInstance)
.map(JsonObject.class::cast)
.map(content -> content.getObject("itemSectionRenderer")
.getArray("contents")
.getObject(0))
.filter(contentItemSectionRendererContents ->
contentItemSectionRendererContents.has("playlistVideoListRenderer"))
.findFirst();
if (videoPlaylistObject.isPresent()) {
items = videoPlaylistObject.get()
.getObject("playlistVideoListRenderer").getArray("contents");
}
} else {
final Optional<JsonObject> tab = getTabData();
if (tab.isPresent()) {
final JsonObject tabContent = tab.get().getObject("content");
items = tabContent
.getObject("sectionListRenderer")
.getArray("contents").getObject(0).getObject("itemSectionRenderer")
.getArray("contents").getObject(0).getObject("gridRenderer")
.getArray("items");
if (items.isEmpty()) {
items = tabContent.getObject("richGridRenderer").getArray("contents");
if (items.isEmpty()) {
items = tabContent.getObject("sectionListRenderer").getArray("contents");
}
}
}
}
// If a channel tab is fetched, the next page requires channel ID and name,
// since channel videos dont have their channel specified.
final List<String> channelIds;
if (usePlaylist) {
channelIds = Collections.emptyList();
} else {
channelIds = List.of(getChannelName(), getUrl());
}
final JsonObject continuation = collectItemsFrom(collector, items, channelIds)
.orElse(null);
final Page nextPage = getNextPageFrom(continuation, channelIds);
return new InfoItemsPage<>(collector, nextPage);
}
@Override
public InfoItemsPage<InfoItem> getPage(final Page page)
throws IOException, ExtractionException {
if (page == null || isNullOrEmpty(page.getUrl())) {
throw new IllegalArgumentException("Page doesn't contain an URL");
}
final List<String> channelIds = page.getIds();
final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
final JsonObject ajaxJson = getJsonPostResponse("browse", page.getBody(),
getExtractorLocalization());
final JsonObject sectionListContinuation = ajaxJson.getArray("onResponseReceivedActions")
.getObject(0)
.getObject("appendContinuationItemsAction");
final JsonObject continuation = collectItemsFrom(collector, sectionListContinuation
.getArray("continuationItems"), channelIds).orElse(null);
return new InfoItemsPage<>(collector,
getNextPageFrom(continuation, channelIds));
}
Optional<JsonObject> getTabData() throws ParsingException {
final String urlSuffix = YoutubeChannelTabLinkHandlerFactory.getUrlSuffix(getName());
final JsonArray tabs = initialData.getObject("contents")
.getObject("twoColumnBrowseResultsRenderer")
.getArray("tabs");
return tabs.stream()
.filter(tab -> tab instanceof JsonObject && ((JsonObject) tab).has("tabRenderer"))
.map(tab -> ((JsonObject) tab).getObject("tabRenderer"))
.filter(tabRenderer -> tabRenderer.getObject("endpoint")
.getObject("commandMetadata").getObject("webCommandMetadata")
.getString("url").endsWith(urlSuffix))
.findFirst()
// Check if tab has no content
.filter(tabRenderer -> {
final JsonArray tabContents = tabRenderer.getObject("content")
.getObject("sectionListRenderer")
.getArray("contents").getObject(0)
.getObject("itemSectionRenderer").getArray("contents");
return tabContents.size() != 1
|| !tabContents.getObject(0).has("messageRenderer");
});
}
private Optional<JsonObject> collectItemsFrom(@Nonnull final MultiInfoItemsCollector collector,
@Nonnull final JsonArray items,
@Nonnull final List<String> channelIds) {
return items.stream()
.filter(JsonObject.class::isInstance)
.map(item -> collectItem(collector, (JsonObject) item, channelIds))
.reduce(Optional.empty(), (c1, c2) -> c1.or(() -> c2));
}
private Optional<JsonObject> collectItem(@Nonnull final MultiInfoItemsCollector collector,
@Nonnull final JsonObject item,
@Nonnull final List<String> channelIds) {
final Consumer<JsonObject> commitVideo = videoRenderer -> collector.commit(
new YoutubeStreamInfoItemExtractor(videoRenderer, getTimeAgoParser()) {
@Override
public String getUploaderName() throws ParsingException {
if (channelIds.size() == 2) {
return channelIds.get(0);
}
return super.getUploaderName();
}
@Override
public String getUploaderUrl() throws ParsingException {
if (channelIds.size() == 2) {
return channelIds.get(1);
}
return super.getUploaderUrl();
}
});
if (item.has("gridVideoRenderer")) {
commitVideo.accept(item.getObject("gridVideoRenderer"));
} else if (item.has("richItemRenderer")) {
final JsonObject richItem = item.getObject("richItemRenderer").getObject("content");
if (richItem.has("videoRenderer")) {
commitVideo.accept(richItem.getObject("videoRenderer"));
} else if (richItem.has("reelItemRenderer")) {
commitVideo.accept(richItem.getObject("reelItemRenderer"));
}
} else if (item.has("gridPlaylistRenderer")) {
collector.commit(new YoutubePlaylistInfoItemExtractor(
item.getObject("gridPlaylistRenderer")) {
@Override
public String getUploaderName() {
return channelIds.get(0);
}
});
} else if (item.has("gridChannelRenderer")) {
collector.commit(new YoutubeChannelInfoItemExtractor(
item.getObject("gridChannelRenderer")));
} else if (item.has("playlistVideoRenderer")) {
commitVideo.accept(item.getObject("playlistVideoRenderer"));
} else if (item.has("shelfRenderer")) {
return collectItem(collector, item.getObject("shelfRenderer")
.getObject("content"), channelIds);
} else if (item.has("itemSectionRenderer")) {
return collectItemsFrom(collector, item.getObject("itemSectionRenderer")
.getArray("contents"), channelIds);
} else if (item.has("horizontalListRenderer")) {
return collectItemsFrom(collector, item.getObject("horizontalListRenderer")
.getArray("items"), channelIds);
} else if (item.has("expandedShelfContentsRenderer")) {
return collectItemsFrom(collector, item.getObject("expandedShelfContentsRenderer")
.getArray("items"), channelIds);
} else if (item.has("continuationItemRenderer")) {
return Optional.ofNullable(item.getObject("continuationItemRenderer"));
}
return Optional.empty();
}
@Nullable
private Page getNextPageFrom(final JsonObject continuations,
final List<String> channelIds) throws IOException,
ExtractionException {
if (isNullOrEmpty(continuations)) {
return null;
}
final JsonObject continuationEndpoint = continuations.getObject("continuationEndpoint");
final String continuation = continuationEndpoint.getObject("continuationCommand")
.getString("token");
final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(getExtractorLocalization(),
getExtractorContentCountry(), visitorData)
.value("continuation", continuation)
.done())
.getBytes(StandardCharsets.UTF_8);
return new Page(YOUTUBEI_V1_URL + "browse?key=" + getKey()
+ DISABLE_PRETTY_PRINT_PARAMETER, null, channelIds, null, body);
}
public static class VideoTabExtractor extends YoutubeChannelTabExtractor {
private final JsonObject tabRenderer;
private final String channelName;
private final String channelId;
private final String channelUrl;
VideoTabExtractor(final StreamingService service,
final ListLinkHandler linkHandler,
final JsonObject tabRenderer,
final String channelName,
final String channelId,
final String channelUrl) {
super(service, linkHandler);
this.tabRenderer = tabRenderer;
this.channelName = channelName;
this.channelId = channelId;
this.channelUrl = channelUrl;
}
@Override
public void onFetchPage(@Nonnull final Downloader downloader) {
// nothing to do, all data was already fetched and is stored in the link handler
}
@Nonnull
@Override
public String getId() throws ParsingException {
return channelId;
}
@Nonnull
@Override
public String getUrl() throws ParsingException {
return channelUrl;
}
@Override
protected String getChannelName() {
return channelName;
}
@Override
Optional<JsonObject> getTabData() {
return Optional.of(tabRenderer);
}
}
}