Use propper structure in KioskExtractors

Made BandCampRadioExtractor a Kiosk which holds StreamInfoItems and not InfoItems.

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampFeaturedExtractor.java

@@ -24,6 +24,8 @@ public class BandcampFeaturedExtractor extends KioskExtractor<PlaylistInfoItem>
     public static final String KIOSK_FEATURED = "Featured";
     public static final String FEATURED_API_URL = "https://bandcamp.com/api/mobile/24/bootstrap_data";
 
+    private JsonObject json;
+
     public BandcampFeaturedExtractor(final StreamingService streamingService, final ListLinkHandler listLinkHandler,
                                      final String kioskId) {
         super(streamingService, listLinkHandler, kioskId);
@@ -31,7 +33,15 @@ public class BandcampFeaturedExtractor extends KioskExtractor<PlaylistInfoItem>
 
     @Override
     public void onFetchPage(@Nonnull Downloader downloader) throws IOException, ExtractionException {
-
+        try {
+            json = JsonParser.object().from(
+                    getDownloader().post(
+                            FEATURED_API_URL, null, "{\"platform\":\"\",\"version\":0}".getBytes()
+                    ).responseBody()
+            );
+        } catch (final JsonParserException e) {
+            throw new ParsingException("Could not parse Bandcamp featured API response", e);
+        }
     }
 
     @Nonnull
@@ -46,35 +56,23 @@ public class BandcampFeaturedExtractor extends KioskExtractor<PlaylistInfoItem>
 
         final PlaylistInfoItemsCollector c = new PlaylistInfoItemsCollector(getServiceId());
 
-        try {
+        final JsonArray featuredStories = json.getObject("feed_content")
+                .getObject("stories")
+                .getArray("featured");
 
+        for (int i = 0; i < featuredStories.size(); i++) {
+            final JsonObject featuredStory = featuredStories.getObject(i);
 
-            final JsonObject json = JsonParser.object().from(
-                    getDownloader().post(
-                            FEATURED_API_URL, null, "{\"platform\":\"\",\"version\":0}".getBytes()
-                    ).responseBody()
-            );
-
-            final JsonArray featuredStories = json.getObject("feed_content")
-                    .getObject("stories")
-                    .getArray("featured");
-
-            for (int i = 0; i < featuredStories.size(); i++) {
-                final JsonObject featuredStory = featuredStories.getObject(i);
-
-                if (featuredStory.isNull("album_title")) {
-                    // Is not an album, ignore
-                    continue;
-                }
-
-                c.commit(new BandcampPlaylistInfoItemFeaturedExtractor(featuredStory));
+            if (featuredStory.isNull("album_title")) {
+                // Is not an album, ignore
+                continue;
             }
 
-            return new InfoItemsPage<>(c, null);
-        } catch (final JsonParserException e) {
-            e.printStackTrace();
-            throw new ParsingException("JSON error", e);
+            c.commit(new BandcampPlaylistInfoItemFeaturedExtractor(featuredStory));
         }
+
+        return new InfoItemsPage<>(c, null);
+
     }
 
     @Override

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampRadioExtractor.java

@@ -6,8 +6,6 @@ import com.grack.nanojson.JsonArray;
 import com.grack.nanojson.JsonObject;
 import com.grack.nanojson.JsonParser;
 import com.grack.nanojson.JsonParserException;
-import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.InfoItemsCollector;
 import org.schabi.newpipe.extractor.Page;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.downloader.Downloader;
@@ -15,16 +13,19 @@ import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.kiosk.KioskExtractor;
 import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.extractor.stream.StreamInfoItemsCollector;
 
 import javax.annotation.Nonnull;
 import java.io.IOException;
 
-public class BandcampRadioExtractor extends KioskExtractor<InfoItem> {
+public class BandcampRadioExtractor extends KioskExtractor<StreamInfoItem> {
 
     public static final String KIOSK_RADIO = "Radio";
     public static final String RADIO_API_URL = "https://bandcamp.com/api/bcweekly/1/list";
 
+    private JsonObject json = null;
+
     public BandcampRadioExtractor(final StreamingService streamingService, final ListLinkHandler linkHandler,
                                   final String kioskId) {
         super(streamingService, linkHandler, kioskId);
@@ -32,7 +33,12 @@ public class BandcampRadioExtractor extends KioskExtractor<InfoItem> {
 
     @Override
     public void onFetchPage(@Nonnull final Downloader downloader) throws IOException, ExtractionException {
-
+        try {
+            json = JsonParser.object().from(
+                    getDownloader().get(RADIO_API_URL).responseBody());
+        } catch (final JsonParserException e) {
+            throw new ExtractionException("Could not parse Bandcamp Radio API response", e);
+        }
     }
 
     @Nonnull
@@ -43,36 +49,21 @@ public class BandcampRadioExtractor extends KioskExtractor<InfoItem> {
 
     @Nonnull
     @Override
-    public InfoItemsPage<InfoItem> getInitialPage() throws IOException, ExtractionException {
-        final InfoItemsCollector c = new StreamInfoItemsCollector(getServiceId());
+    public InfoItemsPage<StreamInfoItem> getInitialPage() {
+        final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
 
-        try {
+        final JsonArray radioShows = json.getArray("results");
 
-            final JsonObject json = JsonParser.object().from(
-                    getDownloader().get(
-                            RADIO_API_URL
-                    ).responseBody()
-            );
-
-            final JsonArray radioShows = json.getArray("results");
-
-            for (int i = 0; i < radioShows.size(); i++) {
-                final JsonObject radioShow = radioShows.getObject(i);
-
-                c.commit(
-                        new BandcampRadioInfoItemExtractor(radioShow)
-                );
-            }
-
-        } catch (final JsonParserException e) {
-            e.printStackTrace();
+        for (int i = 0; i < radioShows.size(); i++) {
+            final JsonObject radioShow = radioShows.getObject(i);
+            collector.commit(new BandcampRadioInfoItemExtractor(radioShow));
         }
 
-        return new InfoItemsPage<InfoItem>(c, null);
+        return new InfoItemsPage<>(collector, null);
     }
 
     @Override
-    public InfoItemsPage<InfoItem> getPage(final Page page) {
+    public InfoItemsPage<StreamInfoItem> getPage(final Page page) {
         return null;
     }
 }

extractor/src/test/java/org/schabi/newpipe/extractor/services/bandcamp/BandcampFeaturedExtractorTest.java

@@ -31,6 +31,7 @@ public class BandcampFeaturedExtractorTest implements BaseListExtractorTest {
         NewPipe.init(DownloaderTestImpl.getInstance());
         extractor = (BandcampFeaturedExtractor) Bandcamp
                 .getKioskList().getDefaultKioskExtractor();
+        extractor.fetchPage();
     }
 
     @Test

extractor/src/test/java/org/schabi/newpipe/extractor/services/bandcamp/BandcampRadioExtractorTest.java

@@ -5,11 +5,11 @@ package org.schabi.newpipe.extractor.services.bandcamp;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.schabi.newpipe.downloader.DownloaderTestImpl;
-import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.services.BaseListExtractorTest;
 import org.schabi.newpipe.extractor.services.bandcamp.extractors.BandcampRadioExtractor;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 
 import java.io.IOException;
 import java.util.List;
@@ -31,11 +31,12 @@ public class BandcampRadioExtractorTest implements BaseListExtractorTest {
         extractor = (BandcampRadioExtractor) Bandcamp
                 .getKioskList()
                 .getExtractorById("Radio", null);
+        extractor.fetchPage();
     }
 
     @Test
     public void testRadioCount() throws ExtractionException, IOException {
-        final List<InfoItem> list = Bandcamp.getKioskList().getExtractorById("Radio", null).getInitialPage().getItems();
+        final List<StreamInfoItem> list = extractor.getInitialPage().getItems();
         assertTrue(list.size() > 300);
     }