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

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package org.schabi.newpipe.extractor.services.youtube.extractors;
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.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.linkHandler.YoutubeSearchQueryHandlerFactory.ALL;
import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.CHANNELS;
import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.PLAYLISTS;
import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.VIDEOS;
import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.getSearchParameter;
import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
import com.grack.nanojson.JsonArray;
import com.grack.nanojson.JsonBuilder;
import com.grack.nanojson.JsonObject;
import com.grack.nanojson.JsonWriter;
import org.schabi.newpipe.extractor.InfoItem;
import org.schabi.newpipe.extractor.MetaInfo;
import org.schabi.newpipe.extractor.MultiInfoItemsCollector;
import org.schabi.newpipe.extractor.Page;
import org.schabi.newpipe.extractor.StreamingService;
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.SearchQueryHandler;
import org.schabi.newpipe.extractor.localization.Localization;
import org.schabi.newpipe.extractor.localization.TimeAgoParser;
import org.schabi.newpipe.extractor.search.SearchExtractor;
import org.schabi.newpipe.extractor.services.youtube.YoutubeMetaInfoHelper;
import org.schabi.newpipe.extractor.utils.JsonUtils;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/*
* Created by Christian Schabesberger on 22.07.2018
*
* Copyright (C) 2018 Christian Schabesberger <chris.schabesberger@mailbox.org>
* YoutubeSearchExtractor.java is part of NewPipe Extractor.
*
* NewPipe Extractor is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* NewPipe Extractor is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NewPipe Extractor. If not, see <http://www.gnu.org/licenses/>.
*/
public class YoutubeSearchExtractor extends SearchExtractor {
@Nullable
private final String searchType;
private final boolean extractVideoResults;
private final boolean extractChannelResults;
private final boolean extractPlaylistResults;
private JsonObject initialData;
public YoutubeSearchExtractor(final StreamingService service,
final SearchQueryHandler linkHandler) {
super(service, linkHandler);
final List<String> contentFilters = linkHandler.getContentFilters();
searchType = isNullOrEmpty(contentFilters) ? null : contentFilters.get(0);
// Save whether we should extract video, channel and playlist results depending on the
// requested search type, as YouTube returns sometimes videos inside channel search results
// If no search type is provided or ALL filter is requested, extract everything
extractVideoResults = searchType == null || ALL.equals(searchType)
|| VIDEOS.equals(searchType);
extractChannelResults = searchType == null || ALL.equals(searchType)
|| CHANNELS.equals(searchType);
extractPlaylistResults = searchType == null || ALL.equals(searchType)
|| PLAYLISTS.equals(searchType);
}
@Override
public void onFetchPage(@Nonnull final Downloader downloader) throws IOException,
ExtractionException {
final String query = super.getSearchString();
final Localization localization = getExtractorLocalization();
final String params = getSearchParameter(searchType);
final JsonBuilder<JsonObject> jsonBody = prepareDesktopJsonBuilder(localization,
getExtractorContentCountry())
.value("query", query);
if (!isNullOrEmpty(params)) {
jsonBody.value("params", params);
}
final byte[] body = JsonWriter.string(jsonBody.done()).getBytes(StandardCharsets.UTF_8);
initialData = getJsonPostResponse("search", body, localization);
}
@Nonnull
@Override
public String getUrl() throws ParsingException {
return super.getUrl() + "&gl=" + getExtractorContentCountry().getCountryCode();
}
@Nonnull
@Override
public String getSearchSuggestion() throws ParsingException {
final JsonObject itemSectionRenderer = initialData.getObject("contents")
.getObject("twoColumnSearchResultsRenderer")
.getObject("primaryContents")
.getObject("sectionListRenderer")
.getArray("contents")
.getObject(0)
.getObject("itemSectionRenderer");
final JsonObject didYouMeanRenderer = itemSectionRenderer.getArray("contents")
.getObject(0)
.getObject("didYouMeanRenderer");
if (!didYouMeanRenderer.isEmpty()) {
return JsonUtils.getString(didYouMeanRenderer,
"correctedQueryEndpoint.searchEndpoint.query");
}
return Objects.requireNonNullElse(
getTextFromObject(itemSectionRenderer.getArray("contents")
.getObject(0)
.getObject("showingResultsForRenderer")
.getObject("correctedQuery")), "");
}
@Override
public boolean isCorrectedSearch() {
final JsonObject showingResultsForRenderer = initialData.getObject("contents")
.getObject("twoColumnSearchResultsRenderer").getObject("primaryContents")
.getObject("sectionListRenderer").getArray("contents").getObject(0)
.getObject("itemSectionRenderer").getArray("contents").getObject(0)
.getObject("showingResultsForRenderer");
return !showingResultsForRenderer.isEmpty();
}
@Nonnull
@Override
public List<MetaInfo> getMetaInfo() throws ParsingException {
return YoutubeMetaInfoHelper.getMetaInfo(
initialData.getObject("contents")
.getObject("twoColumnSearchResultsRenderer")
.getObject("primaryContents")
.getObject("sectionListRenderer")
.getArray("contents"));
}
@Nonnull
@Override
public InfoItemsPage<InfoItem> getInitialPage() throws IOException, ExtractionException {
final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
final JsonArray sections = initialData.getObject("contents")
.getObject("twoColumnSearchResultsRenderer")
.getObject("primaryContents")
.getObject("sectionListRenderer")
.getArray("contents");
Page nextPage = null;
for (final Object section : sections) {
final JsonObject sectionJsonObject = (JsonObject) section;
if (sectionJsonObject.has("itemSectionRenderer")) {
final JsonObject itemSectionRenderer =
sectionJsonObject.getObject("itemSectionRenderer");
collectStreamsFrom(collector, itemSectionRenderer.getArray("contents"));
} else if (sectionJsonObject.has("continuationItemRenderer")) {
nextPage = getNextPageFrom(
sectionJsonObject.getObject("continuationItemRenderer"));
}
}
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 Localization localization = getExtractorLocalization();
final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
// @formatter:off
final byte[] json = JsonWriter.string(prepareDesktopJsonBuilder(localization,
getExtractorContentCountry())
.value("continuation", page.getId())
.done())
.getBytes(StandardCharsets.UTF_8);
// @formatter:on
final JsonObject ajaxJson = getJsonPostResponse("search", json, localization);
final JsonArray continuationItems = ajaxJson.getArray("onResponseReceivedCommands")
.getObject(0)
.getObject("appendContinuationItemsAction")
.getArray("continuationItems");
final JsonArray contents = continuationItems.getObject(0)
.getObject("itemSectionRenderer")
.getArray("contents");
collectStreamsFrom(collector, contents);
return new InfoItemsPage<>(collector, getNextPageFrom(continuationItems.getObject(1)
.getObject("continuationItemRenderer")));
}
private void collectStreamsFrom(final MultiInfoItemsCollector collector,
@Nonnull final JsonArray contents)
throws NothingFoundException {
final TimeAgoParser timeAgoParser = getTimeAgoParser();
for (final Object content : contents) {
final JsonObject item = (JsonObject) content;
if (item.has("backgroundPromoRenderer")) {
throw new NothingFoundException(
getTextFromObject(item.getObject("backgroundPromoRenderer")
.getObject("bodyText")));
} else if (extractVideoResults && item.has("videoRenderer")) {
collector.commit(new YoutubeStreamInfoItemExtractor(
item.getObject("videoRenderer"), timeAgoParser));
} else if (extractChannelResults && item.has("channelRenderer")) {
collector.commit(new YoutubeChannelInfoItemExtractor(
item.getObject("channelRenderer")));
} else if (extractPlaylistResults && item.has("playlistRenderer")) {
collector.commit(new YoutubePlaylistInfoItemExtractor(
item.getObject("playlistRenderer")));
}
}
}
@Nullable
private Page getNextPageFrom(final JsonObject continuationItemRenderer) throws IOException,
ExtractionException {
if (isNullOrEmpty(continuationItemRenderer)) {
return null;
}
final String token = continuationItemRenderer.getObject("continuationEndpoint")
.getObject("continuationCommand")
.getString("token");
final String url = YOUTUBEI_V1_URL + "search?key=" + getKey()
+ DISABLE_PRETTY_PRINT_PARAMETER;
return new Page(url, token);
}
}
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