[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 2024-04-04 19:36:31 +02:00
parent 5a6da5f43e
commit df26badd4a
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1 changed files with 229 additions and 27 deletions

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