Hide unsubscribed folders

app/src/main/java/eu/faircode/email/AdapterFolder.java

@@ -184,9 +184,10 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
         }
 
         private void bindTo(final TupleFolderEx folder) {
-            view.setVisibility(folder.hide && !show_hidden ? View.GONE : View.VISIBLE);
+            boolean hide = folder.isHidden(context);
+            view.setVisibility(hide && !show_hidden ? View.GONE : View.VISIBLE);
             view.setActivated(folder.tbc != null || folder.tbd != null);
-            view.setAlpha(folder.hide ? Helper.LOW_LIGHT : 1.0f);
+            view.setAlpha(hide ? Helper.LOW_LIGHT : 1.0f);
 
             if (textSize != 0)
                 tvName.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -2828,7 +2828,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
 
                     List<EntityFolder> targets = new ArrayList<>();
                     for (EntityFolder folder : folders)
-                        if (!folder.hide &&
+                        if (!folder.isHidden(context) &&
                                 !folder.id.equals(message.folder) &&
                                 !EntityFolder.ARCHIVE.equals(folder.type) &&
                                 !EntityFolder.TRASH.equals(folder.type) &&

app/src/main/java/eu/faircode/email/EntityFolder.java

@@ -20,6 +20,8 @@ package eu.faircode.email;
 */
 
 import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
 
 import androidx.annotation.NonNull;
 import androidx.room.Entity;
@@ -199,6 +201,16 @@ public class EntityFolder implements Serializable {
         return R.drawable.baseline_folder_24;
     }
 
+    boolean isHidden(Context context) {
+        if (hide)
+            return true;
+
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        boolean subscriptions = prefs.getBoolean("subscriptions", false);
+
+        return (subscriptions && subscribed != null && !subscribed);
+    }
+
     String getDisplayName(Context context) {
         return (display == null ? Helper.localizeFolderName(context, name) : display);
     }

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -1144,7 +1144,7 @@ public class FragmentMessages extends FragmentBase {
                     List<EntityFolder> targets = new ArrayList<>();
                     List<EntityFolder> folders = db.folder().getFolders(account.id);
                     for (EntityFolder target : folders)
-                        if (!target.hide &&
+                        if (!target.isHidden(getContext()) &&
                                 !EntityFolder.ARCHIVE.equals(target.type) &&
                                 !EntityFolder.TRASH.equals(target.type) &&
                                 !EntityFolder.JUNK.equals(target.type) &&