Build tags based on feed properties

core/src/main/java/de/danoeh/antennapod/core/feed/FeedPreferences.java

@@ -15,6 +15,7 @@ import de.danoeh.antennapod.core.storage.PodDBAdapter;
 public class FeedPreferences {
 
     public static final float SPEED_USE_GLOBAL = -1;
+    public static final String TAG_ROOT = "#root";
 
     @NonNull
     private FeedFilter filter;
@@ -36,6 +37,7 @@ public class FeedPreferences {
     private float feedPlaybackSpeed;
     private int feedSkipIntro;
     private int feedSkipEnding;
+    private String[] tags = {TAG_ROOT, "Test 1", "Test 2"};
 
     public FeedPreferences(long feedID, boolean autoDownload, AutoDeleteAction auto_delete_action, VolumeAdaptionSetting volumeAdaptionSetting, String username, String password) {
         this(feedID, autoDownload, true, auto_delete_action, volumeAdaptionSetting,
@@ -240,4 +242,12 @@ public class FeedPreferences {
     public int getFeedSkipEnding() {
         return feedSkipEnding;
     }
+
+    public String[] getTags() {
+        return tags;
+    }
+
+    public void setTags(String[] tags) {
+        this.tags = tags;
+    }
 }

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

@@ -11,6 +11,7 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -867,24 +868,27 @@ public final class DBReader {
         int numDownloadedItems = adapter.getNumberOfDownloadedEpisodes();
 
         List<NavDrawerData.DrawerItem> items = new ArrayList<>();
-        for (int i = 0, feedsSize = feeds.size(); i < feedsSize; i++) {
+        Map<String, NavDrawerData.FolderDrawerItem> folders = new HashMap<>();
-            items.add(new NavDrawerData.FeedDrawerItem(feeds.get(i), i, feedCounters.get(feeds.get(i).getId())));
+        for (Feed feed : feeds) {
+            for (String tag : feed.getPreferences().getTags()) {
+                NavDrawerData.FeedDrawerItem drawerItem = new NavDrawerData.FeedDrawerItem(feed, feed.getId(),
+                        feedCounters.get(feed.getId()));
+                if (FeedPreferences.TAG_ROOT.equals(tag)) {
+                    items.add(drawerItem);
+                    continue;
+                }
+                NavDrawerData.FolderDrawerItem folder;
+                if (folders.containsKey(tag)) {
+                    folder = folders.get(tag);
+                } else {
+                    folder = new NavDrawerData.FolderDrawerItem(tag);
+                    folders.put(tag, folder);
+                    items.add(folder);
+                }
+                drawerItem.id |= folder.id;
+                folder.children.add(drawerItem);
+            }
         }
-
-        List<NavDrawerData.DrawerItem> folderItems = new ArrayList<>();
-        for (int i = 0, feedsSize = feeds.size(); i < feedsSize; i++) {
-            folderItems.add(new NavDrawerData.FeedDrawerItem(feeds.get(i), 10001 + i,
-                    feedCounters.get(feeds.get(i).getId())));
-        }
-        items.add(new NavDrawerData.FolderDrawerItem("Folder 1", folderItems, 10000));
-
-        List<NavDrawerData.DrawerItem> folderItems2 = new ArrayList<>();
-        for (int i = 0, feedsSize = feeds.size(); i < feedsSize; i++) {
-            folderItems2.add(new NavDrawerData.FeedDrawerItem(feeds.get(i), 20001 + i,
-                    feedCounters.get(feeds.get(i).getId())));
-        }
-        items.add(new NavDrawerData.FolderDrawerItem("Folder 2", folderItems2, 20000));
-
         NavDrawerData result = new NavDrawerData(items, queueSize, numNewItems, numDownloadedItems,
                 feedCounters, UserPreferences.getEpisodeCleanupAlgorithm().getReclaimableItems());
         adapter.close();

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

@@ -3,6 +3,7 @@ package de.danoeh.antennapod.core.storage;
 import de.danoeh.antennapod.core.feed.Feed;
 import de.danoeh.antennapod.core.util.LongIntMap;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class NavDrawerData {
@@ -34,7 +35,7 @@ public class NavDrawerData {
 
         public final Type type;
         private int layer;
-        public final long id;
+        public long id;
 
         public DrawerItem(Type type, long id) {
             this.type = type;
@@ -55,13 +56,12 @@ public class NavDrawerData {
     }
 
     public static class FolderDrawerItem extends DrawerItem {
-        public final List<DrawerItem> children;
+        public final List<DrawerItem> children = new ArrayList<>();
         public final String name;
         public boolean isOpen;
 
-        public FolderDrawerItem(String name, List<DrawerItem> children, long id) {
+        public FolderDrawerItem(String name) {
-            super(DrawerItem.Type.FOLDER, id);
+            super(DrawerItem.Type.FOLDER, name.hashCode() & ~0xFFF); // Drop lower 12 bits for item ids
-            this.children = children;
             this.name = name;
         }