From 20365111671e4074d33dbe512c79a5204c4cf254 Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Sat, 15 Apr 2017 19:59:47 +0200
Subject: [PATCH] Sort feeds by number of played episodes

This way, your most-loved feeds are on top of the list
---
 .../core/preferences/UserPreferences.java         |  1 +
 .../danoeh/antennapod/core/storage/DBReader.java  | 15 +++++++++++++++
 .../antennapod/core/storage/PodDBAdapter.java     |  8 ++++++++
 core/src/main/res/values/arrays.xml               |  2 ++
 core/src/main/res/values/strings.xml              |  1 +
 5 files changed, 27 insertions(+)

diff --git a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java b/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
index 016b6c446..042298e28 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
+++ b/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;
diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java b/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java
index 1d57d902c..7bda08b7a 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java
+++ b/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) {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java b/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java
index 111770dab..2d0b5c56a 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/PodDBAdapter.java
+++ b/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";
diff --git a/core/src/main/res/values/arrays.xml b/core/src/main/res/values/arrays.xml
index 133a3ed6e..45650495c 100644
--- a/core/src/main/res/values/arrays.xml
+++ b/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">
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index d9b474de6..328dd34e8 100644
--- a/core/src/main/res/values/strings.xml
+++ b/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>