Sort feeds by number of played episodes

This way, your most-loved feeds are on top of the list

core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java

@@ -126,6 +126,7 @@ public class UserPreferences {
     public static final int FEED_ORDER_COUNTER = 0;
     public static final int FEED_ORDER_ALPHABETICAL = 1;
     public static final int FEED_ORDER_LAST_UPDATE = 2;
+    public static final int FEED_ORDER_MOST_PLAYED = 3;
     public static final int FEED_COUNTER_SHOW_NEW_UNPLAYED_SUM = 0;
     public static final int FEED_COUNTER_SHOW_NEW = 1;
     public static final int FEED_COUNTER_SHOW_UNPLAYED = 2;

core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java

@@ -1080,6 +1080,21 @@ public final class DBReader {
                     return t1.compareToIgnoreCase(t2);
                 }
             };
+        } else if(feedOrder == UserPreferences.FEED_ORDER_MOST_PLAYED) {
+            final LongIntMap playedCounters = adapter.getPlayedEpisodesCounters(feedIds);
+
+            comparator = (lhs, rhs) -> {
+                long counterLhs = playedCounters.get(lhs.getId());
+                long counterRhs = playedCounters.get(rhs.getId());
+                if(counterLhs > counterRhs) {
+                    // podcast with most played episodes first
+                    return -1;
+                } else if(counterLhs == counterRhs) {
+                    return lhs.getTitle().compareToIgnoreCase(rhs.getTitle());
+                } else {
+                    return 1;
+                }
+            };
         } else {
             comparator = (lhs, rhs) -> {
                 if(lhs.getItems() == null || lhs.getItems().size() == 0) {

core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java

@@ -1463,7 +1463,10 @@ public class PodDBAdapter {
             default: // NONE
                 return new LongIntMap(0);
         }
+        return conditionalFeedCounterRead(whereRead, feedIds);
+    }
 
+    private LongIntMap conditionalFeedCounterRead(String whereRead, long... feedIds) {
         // work around TextUtils.join wanting only boxed items
         // and StringUtils.join() causing NoSuchMethodErrors on MIUI
         StringBuilder builder = new StringBuilder();
@@ -1496,6 +1499,11 @@ public class PodDBAdapter {
         return result;
     }
 
+    public final LongIntMap getPlayedEpisodesCounters(long... feedIds) {
+        String whereRead = KEY_READ + "=" + FeedItem.PLAYED;
+        return conditionalFeedCounterRead(whereRead, feedIds);
+    }
+
     public final int getNumberOfDownloadedEpisodes() {
         final String query = "SELECT COUNT(DISTINCT " + KEY_ID + ") AS count FROM " + TABLE_NAME_FEED_MEDIA +
                 " WHERE " + KEY_DOWNLOADED + " > 0";

core/src/main/res/values/arrays.xml

@@ -157,11 +157,13 @@
         <item>@string/drawer_feed_order_unplayed_episodes</item>
         <item>@string/drawer_feed_order_alphabetical</item>
         <item>@string/drawer_feed_order_last_update</item>
+        <item>@string/drawer_feed_order_most_played</item>
     </string-array>
     <string-array name="nav_drawer_feed_order_values">
         <item>0</item>
         <item>1</item>
         <item>2</item>
+        <item>3</item>
     </string-array>
 
     <string-array name="nav_drawer_feed_counter_options">

core/src/main/res/values/strings.xml

@@ -39,6 +39,7 @@
     <string name="drawer_feed_order_unplayed_episodes">Sort by counter</string>
     <string name="drawer_feed_order_alphabetical">Sort alphabetically</string>
     <string name="drawer_feed_order_last_update">Sort by publication date</string>
+    <string name="drawer_feed_order_most_played">Sort by number of played episodes</string>
     <string name="drawer_feed_counter_new_unplayed">Number of new and unplayed episodes</string>
     <string name="drawer_feed_counter_new">Number of new episodes</string>
     <string name="drawer_feed_counter_unplayed">Number of unplayed episodes</string>