248 lines
11 KiB
Java
248 lines
11 KiB
Java
package org.schabi.newpipe.extractor.services.youtube.extractors;
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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.getTextFromObject;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getValidJsonResponseBody;
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import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.prepareDesktopJsonBuilder;
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import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.getSearchParameter;
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import static org.schabi.newpipe.extractor.utils.Utils.UTF_8;
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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.JsonBuilder;
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import com.grack.nanojson.JsonObject;
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import com.grack.nanojson.JsonParser;
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import com.grack.nanojson.JsonParserException;
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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.MetaInfo;
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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.downloader.Downloader;
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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.linkhandler.SearchQueryHandler;
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import org.schabi.newpipe.extractor.localization.Localization;
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import org.schabi.newpipe.extractor.localization.TimeAgoParser;
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import org.schabi.newpipe.extractor.MultiInfoItemsCollector;
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import org.schabi.newpipe.extractor.search.SearchExtractor;
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import org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper;
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import org.schabi.newpipe.extractor.utils.JsonUtils;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.List;
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import javax.annotation.Nonnull;
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/*
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* Created by Christian Schabesberger on 22.07.2018
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*
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* Copyright (C) Christian Schabesberger 2018 <chris.schabesberger@mailbox.org>
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* YoutubeSearchExtractor.java is part of NewPipe.
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*
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* NewPipe is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* NewPipe is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
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*/
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public class YoutubeSearchExtractor extends SearchExtractor {
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private JsonObject initialData;
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public YoutubeSearchExtractor(final StreamingService service,
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final SearchQueryHandler linkHandler) {
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super(service, linkHandler);
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}
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@Override
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public void onFetchPage(@Nonnull final Downloader downloader) throws IOException,
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ExtractionException {
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final String query = super.getSearchString();
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final Localization localization = getExtractorLocalization();
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// Get the search parameter of the request
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final List<String> contentFilters = super.getLinkHandler().getContentFilters();
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final String params;
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if (!isNullOrEmpty(contentFilters)) {
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final String searchType = contentFilters.get(0);
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params = getSearchParameter(searchType);
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} else {
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params = "";
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}
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final JsonBuilder<JsonObject> jsonBody = prepareDesktopJsonBuilder(localization,
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getExtractorContentCountry())
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.value("query", query);
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if (!isNullOrEmpty(params)) {
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jsonBody.value("params", params);
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}
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final byte[] body = JsonWriter.string(jsonBody.done()).getBytes(UTF_8);
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initialData = getJsonPostResponse("search", body, localization);
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}
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@Nonnull
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@Override
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public String getUrl() throws ParsingException {
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return super.getUrl() + "&gl=" + getExtractorContentCountry().getCountryCode();
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}
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@Nonnull
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@Override
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public String getSearchSuggestion() throws ParsingException {
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final JsonObject itemSectionRenderer = initialData.getObject("contents")
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.getObject("twoColumnSearchResultsRenderer").getObject("primaryContents")
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.getObject("sectionListRenderer").getArray("contents").getObject(0)
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.getObject("itemSectionRenderer");
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final JsonObject didYouMeanRenderer = itemSectionRenderer.getArray("contents").getObject(0)
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.getObject("didYouMeanRenderer");
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final JsonObject showingResultsForRenderer = itemSectionRenderer.getArray("contents")
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.getObject(0)
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.getObject("showingResultsForRenderer");
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if (!didYouMeanRenderer.isEmpty()) {
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return JsonUtils.getString(didYouMeanRenderer,
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"correctedQueryEndpoint.searchEndpoint.query");
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} else if (showingResultsForRenderer != null) {
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return getTextFromObject(showingResultsForRenderer.getObject("correctedQuery"));
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} else {
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return "";
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}
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}
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@Override
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public boolean isCorrectedSearch() {
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final JsonObject showingResultsForRenderer = initialData.getObject("contents")
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.getObject("twoColumnSearchResultsRenderer").getObject("primaryContents")
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.getObject("sectionListRenderer").getArray("contents").getObject(0)
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.getObject("itemSectionRenderer").getArray("contents").getObject(0)
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.getObject("showingResultsForRenderer");
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return !showingResultsForRenderer.isEmpty();
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}
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@Nonnull
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@Override
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public List<MetaInfo> getMetaInfo() throws ParsingException {
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return YoutubeParsingHelper.getMetaInfo(
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initialData.getObject("contents").getObject("twoColumnSearchResultsRenderer")
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.getObject("primaryContents").getObject("sectionListRenderer")
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.getArray("contents"));
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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 JsonArray sections = initialData.getObject("contents")
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.getObject("twoColumnSearchResultsRenderer").getObject("primaryContents")
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.getObject("sectionListRenderer").getArray("contents");
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Page nextPage = null;
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for (final Object section : sections) {
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if (((JsonObject) section).has("itemSectionRenderer")) {
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final JsonObject itemSectionRenderer = ((JsonObject) section)
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.getObject("itemSectionRenderer");
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collectStreamsFrom(collector, itemSectionRenderer.getArray("contents"));
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} else if (((JsonObject) section).has("continuationItemRenderer")) {
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nextPage = getNextPageFrom(((JsonObject) section)
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.getObject("continuationItemRenderer"));
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}
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}
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return new InfoItemsPage<>(collector, nextPage);
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}
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@Override
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public InfoItemsPage<InfoItem> getPage(final Page page) throws IOException,
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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 Localization localization = getExtractorLocalization();
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final MultiInfoItemsCollector collector = new MultiInfoItemsCollector(getServiceId());
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// @formatter:off
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final byte[] json = JsonWriter.string(prepareDesktopJsonBuilder(localization,
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getExtractorContentCountry())
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.value("continuation", page.getId())
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.done())
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.getBytes(UTF_8);
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// @formatter:on
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final String responseBody = getValidJsonResponseBody(getDownloader().post(
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page.getUrl(), new HashMap<>(), json));
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final JsonObject ajaxJson;
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try {
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ajaxJson = JsonParser.object().from(responseBody);
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} catch (final JsonParserException e) {
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throw new ParsingException("Could not parse JSON", e);
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}
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final JsonArray continuationItems = ajaxJson.getArray("onResponseReceivedCommands")
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.getObject(0).getObject("appendContinuationItemsAction")
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.getArray("continuationItems");
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final JsonArray contents = continuationItems.getObject(0)
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.getObject("itemSectionRenderer").getArray("contents");
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collectStreamsFrom(collector, contents);
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return new InfoItemsPage<>(collector, getNextPageFrom(continuationItems.getObject(1)
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.getObject("continuationItemRenderer")));
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}
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private void collectStreamsFrom(final MultiInfoItemsCollector collector,
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final JsonArray contents) throws NothingFoundException,
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ParsingException {
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final TimeAgoParser timeAgoParser = getTimeAgoParser();
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for (final Object content : contents) {
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final JsonObject item = (JsonObject) content;
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if (item.has("backgroundPromoRenderer")) {
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throw new NothingFoundException(getTextFromObject(
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item.getObject("backgroundPromoRenderer").getObject("bodyText")));
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} else if (item.has("videoRenderer")) {
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collector.commit(new YoutubeStreamInfoItemExtractor(item
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.getObject("videoRenderer"), timeAgoParser));
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} else if (item.has("channelRenderer")) {
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collector.commit(new YoutubeChannelInfoItemExtractor(item
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.getObject("channelRenderer")));
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} else if (item.has("playlistRenderer")) {
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collector.commit(new YoutubePlaylistInfoItemExtractor(item
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.getObject("playlistRenderer")));
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}
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}
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}
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private Page getNextPageFrom(final JsonObject continuationItemRenderer) throws IOException,
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ExtractionException {
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if (isNullOrEmpty(continuationItemRenderer)) {
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return null;
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}
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final String token = continuationItemRenderer.getObject("continuationEndpoint")
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.getObject("continuationCommand").getString("token");
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final String url = YOUTUBEI_V1_URL + "search?key=" + getKey();
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return new Page(url, token);
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}
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}
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