[YouTube] Add common methods to get ID, name and age gate object of channels
Also move duplicate strings into constants and support pageHeader channel header in user channels on YoutubeChannelHelper methods.
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AudricV
parent
5a6da5f43e
commit
df26badd4a
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@ -4,16 +4,19 @@ import com.grack.nanojson.JsonObject;
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import com.grack.nanojson.JsonWriter;
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import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
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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.localization.ContentCountry;
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import org.schabi.newpipe.extractor.localization.Localization;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.util.Optional;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.defaultAlertsCheck;
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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.getTextFromObject;
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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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@ -21,6 +24,19 @@ import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
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* Shared functions for extracting YouTube channel pages and tabs.
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*/
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public final class YoutubeChannelHelper {
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private static final String BROWSE_ENDPOINT = "browseEndpoint";
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private static final String BROWSE_ID = "browseId";
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private static final String CAROUSEL_HEADER_RENDERER = "carouselHeaderRenderer";
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private static final String C4_TABBED_HEADER_RENDERER = "c4TabbedHeaderRenderer";
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private static final String CONTENT = "content";
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private static final String CONTENTS = "contents";
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private static final String HEADER = "header";
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private static final String PAGE_HEADER_VIEW_MODEL = "pageHeaderViewModel";
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private static final String TAB_RENDERER = "tabRenderer";
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private static final String TITLE = "title";
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private static final String TOPIC_CHANNEL_DETAILS_RENDERER = "topicChannelDetailsRenderer";
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private YoutubeChannelHelper() {
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}
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@ -64,8 +80,8 @@ public final class YoutubeChannelHelper {
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.getObject("webCommandMetadata")
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.getString("webPageType", "");
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final JsonObject browseEndpoint = endpoint.getObject("browseEndpoint");
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final String browseId = browseEndpoint.getString("browseId", "");
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final JsonObject browseEndpoint = endpoint.getObject(BROWSE_ENDPOINT);
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final String browseId = browseEndpoint.getString(BROWSE_ID, "");
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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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@ -140,7 +156,7 @@ public final class YoutubeChannelHelper {
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while (level < 3) {
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final byte[] body = JsonWriter.string(prepareDesktopJsonBuilder(
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localization, country)
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.value("browseId", id)
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.value(BROWSE_ID, id)
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.value("params", parameters)
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.done())
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.getBytes(StandardCharsets.UTF_8);
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@ -159,8 +175,8 @@ public final class YoutubeChannelHelper {
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.getObject("webCommandMetadata")
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.getString("webPageType", "");
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final String browseId = endpoint.getObject("browseEndpoint")
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.getString("browseId", "");
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final String browseId = endpoint.getObject(BROWSE_ENDPOINT)
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.getString(BROWSE_ID, "");
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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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@ -257,7 +273,7 @@ public final class YoutubeChannelHelper {
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* A {@code pageHeaderRenderer} channel header type.
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*
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* <p>
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* This header returns only the channel's name and its avatar.
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* This header returns only the channel's name and its avatar for system channels.
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* </p>
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*/
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PAGE
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@ -294,20 +310,20 @@ public final class YoutubeChannelHelper {
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@Nonnull
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public static Optional<ChannelHeader> getChannelHeader(
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@Nonnull final JsonObject channelResponse) {
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final JsonObject header = channelResponse.getObject("header");
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final JsonObject header = channelResponse.getObject(HEADER);
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if (header.has("c4TabbedHeaderRenderer")) {
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return Optional.of(header.getObject("c4TabbedHeaderRenderer"))
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if (header.has(C4_TABBED_HEADER_RENDERER)) {
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return Optional.of(header.getObject(C4_TABBED_HEADER_RENDERER))
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.map(json -> new ChannelHeader(json, ChannelHeader.HeaderType.C4_TABBED));
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} else if (header.has("carouselHeaderRenderer")) {
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return header.getObject("carouselHeaderRenderer")
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.getArray("contents")
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} else if (header.has(CAROUSEL_HEADER_RENDERER)) {
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return header.getObject(CAROUSEL_HEADER_RENDERER)
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.getArray(CONTENTS)
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast)
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.filter(item -> item.has("topicChannelDetailsRenderer"))
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.filter(item -> item.has(TOPIC_CHANNEL_DETAILS_RENDERER))
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.findFirst()
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.map(item -> item.getObject("topicChannelDetailsRenderer"))
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.map(item -> item.getObject(TOPIC_CHANNEL_DETAILS_RENDERER))
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.map(json -> new ChannelHeader(json, ChannelHeader.HeaderType.CAROUSEL));
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} else if (header.has("pageHeaderRenderer")) {
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return Optional.of(header.getObject("pageHeaderRenderer"))
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@ -333,22 +349,208 @@ public final class YoutubeChannelHelper {
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* @return whether the channel is verified
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*/
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public static boolean isChannelVerified(@Nonnull final ChannelHeader channelHeader) {
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// carouselHeaderRenderer and pageHeaderRenderer does not contain any verification
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// badges
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// Since they are only shown on YouTube internal channels or on channels of large
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// organizations broadcasting live events, we can assume the channel to be verified
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if (channelHeader.headerType == ChannelHeader.HeaderType.CAROUSEL
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|| channelHeader.headerType == ChannelHeader.HeaderType.PAGE) {
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return true;
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switch (channelHeader.headerType) {
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// carouselHeaderRenderers do not contain any verification badges
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// Since they are only shown on YouTube internal channels or on channels of large
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// organizations broadcasting live events, we can assume the channel to be verified
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case CAROUSEL:
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return true;
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case PAGE:
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final JsonObject pageHeaderViewModel = channelHeader.json.getObject(CONTENT)
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.getObject(PAGE_HEADER_VIEW_MODEL);
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final boolean hasCircleOrMusicIcon = pageHeaderViewModel.getObject(TITLE)
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.getObject("dynamicTextViewModel")
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.getObject("text")
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.getArray("attachmentRuns")
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast)
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.anyMatch(attachmentRun -> attachmentRun.getObject("element")
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.getObject("type")
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.getObject("imageType")
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.getObject("image")
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.getArray("sources")
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast)
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.anyMatch(source -> {
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final String imageName = source.getObject("clientResource")
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.getString("imageName");
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return "CHECK_CIRCLE_FILLED".equals(imageName)
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|| "MUSIC_FILLED".equals(imageName);
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}));
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if (!hasCircleOrMusicIcon && pageHeaderViewModel.getObject("image")
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.has("contentPreviewImageViewModel")) {
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// If a pageHeaderRenderer has no object in which a check verified may be
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// contained and if it has a contentPreviewImageViewModel, it should mean
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// that the header is coming from a system channel, which we can assume to
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// be verified
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return true;
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}
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return hasCircleOrMusicIcon;
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case INTERACTIVE_TABBED:
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// If the header has an autoGenerated property, it should mean that the channel has
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// been auto generated by YouTube: we can assume the channel to be verified in this
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// case
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return channelHeader.json.has("autoGenerated");
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default:
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return YoutubeParsingHelper.isVerified(channelHeader.json.getArray("badges"));
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}
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}
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/**
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* Get the ID of a channel from its response.
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*
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* <p>
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* For {@link ChannelHeader.HeaderType#C4_TABBED c4TabbedHeaderRenderer} and
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* {@link ChannelHeader.HeaderType#CAROUSEL carouselHeaderRenderer} channel headers, the ID is
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* get from the header.
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* </p>
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*
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* <p>
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* For other headers or if it cannot be got, the ID from the {@code channelMetadataRenderer}
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* in the channel response is used.
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* </p>
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*
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* <p>
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* If the ID cannot still be get, the fallback channel ID, if provided, will be used.
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* </p>
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*
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* @param header the channel header
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* @param fallbackChannelId the fallback channel ID, which can be null
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* @return the ID of the channel
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* @throws ParsingException if the channel ID cannot be got from the channel header, the
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* channel response and the fallback channel ID
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*/
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@Nonnull
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public static String getChannelId(
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@SuppressWarnings("OptionalUsedAsFieldOrParameterType")
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@Nonnull final Optional<ChannelHeader> header,
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@Nonnull final JsonObject jsonResponse,
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@Nullable final String fallbackChannelId) throws ParsingException {
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if (header.isPresent()) {
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final ChannelHeader channelHeader = header.get();
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switch (channelHeader.headerType) {
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case C4_TABBED:
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final String channelId = channelHeader.json.getObject(HEADER)
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.getObject(C4_TABBED_HEADER_RENDERER)
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.getString("channelId", "");
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if (!isNullOrEmpty(channelId)) {
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return channelId;
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}
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final String navigationC4TabChannelId = channelHeader.json
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.getObject("navigationEndpoint")
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.getObject(BROWSE_ENDPOINT)
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.getString(BROWSE_ID);
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if (!isNullOrEmpty(navigationC4TabChannelId)) {
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return navigationC4TabChannelId;
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}
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break;
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case CAROUSEL:
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final String navigationCarouselChannelId = channelHeader.json.getObject(HEADER)
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.getObject(CAROUSEL_HEADER_RENDERER)
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.getArray(CONTENTS)
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast)
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.filter(item -> item.has(TOPIC_CHANNEL_DETAILS_RENDERER))
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.findFirst()
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.orElse(new JsonObject())
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.getObject(TOPIC_CHANNEL_DETAILS_RENDERER)
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.getObject("navigationEndpoint")
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.getObject(BROWSE_ENDPOINT)
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.getString(BROWSE_ID);
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if (!isNullOrEmpty(navigationCarouselChannelId)) {
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return navigationCarouselChannelId;
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}
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break;
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default:
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break;
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}
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}
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if (channelHeader.headerType == ChannelHeader.HeaderType.INTERACTIVE_TABBED) {
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// If the header has an autoGenerated property, it should mean that the channel has
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// been auto generated by YouTube: we can assume the channel to be verified in this
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// case
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return channelHeader.json.has("autoGenerated");
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final String externalChannelId = jsonResponse.getObject("metadata")
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.getObject("channelMetadataRenderer")
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.getString("externalChannelId");
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if (!isNullOrEmpty(externalChannelId)) {
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return externalChannelId;
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}
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return YoutubeParsingHelper.isVerified(channelHeader.json.getArray("badges"));
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if (!isNullOrEmpty(fallbackChannelId)) {
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return fallbackChannelId;
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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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public static String getChannelName(@SuppressWarnings("OptionalUsedAsFieldOrParameterType")
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@Nonnull final Optional<ChannelHeader> channelHeader,
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@Nonnull final JsonObject jsonResponse,
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@Nullable final JsonObject channelAgeGateRenderer)
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throws ParsingException {
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if (channelAgeGateRenderer != null) {
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final String title = channelAgeGateRenderer.getString("channelTitle");
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if (isNullOrEmpty(title)) {
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throw new ParsingException("Could not get channel name");
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}
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return title;
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}
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final String metadataRendererTitle = jsonResponse.getObject("metadata")
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.getObject("channelMetadataRenderer")
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.getString(TITLE);
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if (!isNullOrEmpty(metadataRendererTitle)) {
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return metadataRendererTitle;
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}
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return channelHeader.map(header -> {
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final JsonObject channelJson = header.json;
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switch (header.headerType) {
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case PAGE:
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return channelJson.getObject(CONTENT)
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.getObject(PAGE_HEADER_VIEW_MODEL)
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.getObject(TITLE)
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.getObject("dynamicTextViewModel")
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.getObject("text")
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.getString(CONTENT, channelJson.getString("pageTitle"));
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case CAROUSEL:
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case INTERACTIVE_TABBED:
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return getTextFromObject(channelJson.getObject(TITLE));
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case C4_TABBED:
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default:
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return channelJson.getString(TITLE);
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}
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})
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// The channel name from a microformatDataRenderer may be different from the one
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// displayed, especially for auto-generated channels, depending on the language
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// requested for the interface (hl parameter of InnerTube requests' payload)
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.or(() -> Optional.ofNullable(jsonResponse.getObject("microformat")
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.getObject("microformatDataRenderer")
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.getString(TITLE)))
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.orElseThrow(() -> new ParsingException("Could not get channel name"));
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}
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@Nullable
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public static JsonObject getChannelAgeGateRenderer(@Nonnull final JsonObject jsonResponse) {
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return jsonResponse.getObject(CONTENTS)
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.getObject("twoColumnBrowseResultsRenderer")
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.getArray("tabs")
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast)
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.flatMap(tab -> tab.getObject(TAB_RENDERER)
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.getObject(CONTENT)
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.getObject("sectionListRenderer")
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.getArray(CONTENTS)
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.stream()
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.filter(JsonObject.class::isInstance)
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.map(JsonObject.class::cast))
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.filter(content -> content.has("channelAgeGateRenderer"))
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.map(content -> content.getObject("channelAgeGateRenderer"))
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.findFirst()
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.orElse(null);
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}
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}
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