Revert some changes

Author: mauriciocolli

services/youtube/YoutubeChannelExtractor.java

@@ -18,6 +18,7 @@
 import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
 import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
 
+
 import java.io.IOException;
 
 /**
@@ -45,20 +46,19 @@ public class YoutubeChannelExtractor extends ChannelExtractor {
     private static final String TAG = YoutubeChannelExtractor.class.toString();
 
     // private CSSOMParser cssParser = new CSSOMParser(new SACParserCSS3());
-    private static final String CHANNEL_FEED_BASE = "https://www.youtube.com/feeds/videos.xml?channel_id=";
 
     private Document doc = null;
 
     private boolean isAjaxPage = false;
-    private String userUrl = "";
-    private String channelName = "";
-    private String avatarUrl = "";
-    private String bannerUrl = "";
-    private String feedUrl = "";
-    private long subscriberCount = -1;
+    private static String userUrl = "";
+    private static String channelName = "";
+    private static String avatarUrl = "";
+    private static String bannerUrl = "";
+    private static String feedUrl = "";
+    private static long subscriberCount = -1;
     // the fist page is html all other pages are ajax. Every new page can be requested by sending
     // this request url.
-    private String nextPageUrl = "";
+    private static String nextPageUrl = "";
 
     public YoutubeChannelExtractor(UrlIdHandler urlIdHandler, String url, int page, int serviceId)
             throws ExtractionException, IOException {
@@ -318,8 +318,13 @@ public long getSubscriberCount() throws ParsingException {
     @Override
     public String getFeedUrl() throws ParsingException {
         try {
-            String channelId = doc.getElementsByClass("yt-uix-subscription-button").first().attr("data-channel-external-id");
-            feedUrl = CHANNEL_FEED_BASE + channelId;
+            if(userUrl.contains("channel")) {
+                //channels don't have feeds in youtube, only user can provide such
+                return "";
+            }
+            if(!isAjaxPage) {
+                feedUrl = doc.select("link[title=\"RSS\"]").first().attr("abs:href");
+            }
             return feedUrl;
         } catch(Exception e) {
             throw new ParsingException("Could not get feed url", e);

services/youtube/YoutubePlayListExtractor.java

@@ -25,11 +25,11 @@ public class YoutubePlayListExtractor extends PlayListExtractor {
     private Document doc = null;
 
     private boolean isAjaxPage = false;
-    private String name = "";
-    private String feedUrl = "";
-    private String avatarUrl = "";
-    private String bannerUrl = "";
-    private String nextPageUrl = "";
+    private static String name = "";
+    private static String feedUrl = "";
+    private static String avatarUrl = "";
+    private static String bannerUrl = "";
+    private static String nextPageUrl = "";
 
     public YoutubePlayListExtractor(UrlIdHandler urlIdHandler,
                                     String url, int page, int serviceId) throws IOException, ExtractionException {