188 lines
6.5 KiB
Java
188 lines
6.5 KiB
Java
package org.schabi.newpipe.extractor.services.peertube.extractors;
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import com.grack.nanojson.JsonArray;
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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 org.jsoup.helper.StringUtil;
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import org.schabi.newpipe.extractor.StreamingService;
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import org.schabi.newpipe.extractor.channel.ChannelExtractor;
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import org.schabi.newpipe.extractor.downloader.Downloader;
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import org.schabi.newpipe.extractor.downloader.Response;
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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.ListLinkHandler;
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import org.schabi.newpipe.extractor.services.peertube.PeertubeParsingHelper;
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import org.schabi.newpipe.extractor.stream.StreamInfoItem;
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import org.schabi.newpipe.extractor.stream.StreamInfoItemsCollector;
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import org.schabi.newpipe.extractor.utils.JsonUtils;
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import org.schabi.newpipe.extractor.utils.Parser;
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import org.schabi.newpipe.extractor.utils.Parser.RegexException;
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import java.io.IOException;
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public class PeertubeChannelExtractor extends ChannelExtractor {
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private static final String START_KEY = "start";
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private static final String COUNT_KEY = "count";
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private static final int ITEMS_PER_PAGE = 12;
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private static final String START_PATTERN = "start=(\\d*)";
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private InfoItemsPage<StreamInfoItem> initPage;
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private long total;
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private JsonObject json;
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private final String baseUrl;
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public PeertubeChannelExtractor(StreamingService service, ListLinkHandler linkHandler) throws ParsingException {
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super(service, linkHandler);
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this.baseUrl = getBaseUrl();
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}
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@Override
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public String getAvatarUrl() throws ParsingException {
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String value;
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try {
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value = JsonUtils.getString(json, "avatar.path");
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} catch (Exception e) {
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value = "/client/assets/images/default-avatar.png";
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}
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return baseUrl + value;
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}
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@Override
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public String getBannerUrl() throws ParsingException {
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return null;
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}
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@Override
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public String getFeedUrl() throws ParsingException {
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return null;
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}
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@Override
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public long getSubscriberCount() throws ParsingException {
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Number number = JsonUtils.getNumber(json, "followersCount");
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return number.longValue();
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}
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@Override
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public String getDescription() throws ParsingException {
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try {
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return JsonUtils.getString(json, "description");
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} catch (ParsingException e) {
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return "No description";
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}
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getInitialPage() throws IOException, ExtractionException {
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super.fetchPage();
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return initPage;
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}
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private void collectStreamsFrom(StreamInfoItemsCollector collector, JsonObject json, String pageUrl) throws ParsingException {
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JsonArray contents;
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try {
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contents = (JsonArray) JsonUtils.getValue(json, "data");
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} catch (Exception e) {
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throw new ParsingException("unable to extract channel streams", e);
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}
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for (Object c : contents) {
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if (c instanceof JsonObject) {
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final JsonObject item = (JsonObject) c;
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PeertubeStreamInfoItemExtractor extractor = new PeertubeStreamInfoItemExtractor(item, baseUrl);
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collector.commit(extractor);
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}
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}
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}
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@Override
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public String getNextPageUrl() throws IOException, ExtractionException {
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super.fetchPage();
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return initPage.getNextPageUrl();
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getPage(String pageUrl) throws IOException, ExtractionException {
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Response response = getDownloader().get(pageUrl);
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JsonObject json = null;
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if (null != response && !StringUtil.isBlank(response.responseBody())) {
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try {
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json = JsonParser.object().from(response.responseBody());
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} catch (Exception e) {
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throw new ParsingException("Could not parse json data for kiosk info", e);
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}
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}
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StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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if (json != null) {
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PeertubeParsingHelper.validate(json);
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Number number = JsonUtils.getNumber(json, "total");
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if (number != null) this.total = number.longValue();
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collectStreamsFrom(collector, json, pageUrl);
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} else {
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throw new ExtractionException("Unable to get PeerTube kiosk info");
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}
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return new InfoItemsPage<>(collector, getNextPageUrl(pageUrl));
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}
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private String getNextPageUrl(String prevPageUrl) {
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String prevStart;
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try {
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prevStart = Parser.matchGroup1(START_PATTERN, prevPageUrl);
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} catch (RegexException e) {
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return "";
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}
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if (StringUtil.isBlank(prevStart)) return "";
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long nextStart = 0;
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try {
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nextStart = Long.valueOf(prevStart) + ITEMS_PER_PAGE;
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} catch (NumberFormatException e) {
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return "";
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}
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if (nextStart >= total) {
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return "";
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} else {
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return prevPageUrl.replace(START_KEY + "=" + prevStart, START_KEY + "=" + String.valueOf(nextStart));
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}
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}
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@Override
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public void onFetchPage(Downloader downloader) throws IOException, ExtractionException {
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Response response = downloader.get(getUrl());
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if (null != response && null != response.responseBody()) {
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setInitialData(response.responseBody());
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} else {
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throw new ExtractionException("Unable to extract PeerTube channel data");
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}
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String pageUrl = getUrl() + "/videos?" + START_KEY + "=0&" + COUNT_KEY + "=" + ITEMS_PER_PAGE;
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this.initPage = getPage(pageUrl);
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}
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private void setInitialData(String responseBody) throws ExtractionException {
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try {
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json = JsonParser.object().from(responseBody);
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} catch (JsonParserException e) {
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throw new ExtractionException("Unable to extract peertube channel data", e);
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}
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if (json == null) throw new ExtractionException("Unable to extract PeerTube channel data");
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}
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@Override
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public String getName() throws ParsingException {
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return JsonUtils.getString(json, "displayName");
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}
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@Override
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public String getOriginalUrl() throws ParsingException {
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return baseUrl + "/accounts/" + getId();
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}
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}
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