Monitor hidden messages

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

@@ -147,6 +147,12 @@ public interface DaoMessage {
             ", CASE WHEN folder.type = '" + EntityFolder.ARCHIVE + "' THEN 1 ELSE 0 END")
     DataSource.Factory<Integer, TupleMessageEx> pagedThread(long account, String thread, Long id, boolean debug);
 
+    @Query("SELECT id FROM message" +
+            " WHERE account = :account" +
+            " AND thread = :thread" +
+            " AND ui_hide")
+    LiveData<List<Long>> liveHidden(long account, String thread);
+
     @Query("SELECT COUNT(id)" +
             " FROM message" +
             " WHERE id = :id")
@@ -309,6 +315,9 @@ public interface DaoMessage {
     @Query("UPDATE message SET ui_hide = :ui_hide WHERE id = :id")
     int setMessageUiHide(long id, boolean ui_hide);
 
+    @Query("UPDATE message SET ui_hide = :ui_hide WHERE folder = :folder AND uid = :uid")
+    int setMessageUiHide(long folder, long uid, boolean ui_hide);
+
     @Query("UPDATE message SET ui_ignored = :ui_ignored WHERE id = :id")
     int setMessageUiIgnored(long id, boolean ui_ignored);
 

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

@@ -1798,6 +1798,20 @@ public class FragmentMessages extends FragmentBase {
                         setSubtitle(getString(R.string.title_folder_thread, account == null ? "" : account.name));
                     }
                 });
+                db.message().liveHidden(account, thread).observe(getViewLifecycleOwner(), new Observer<List<Long>>() {
+                    @Override
+                    public void onChanged(List<Long> ids) {
+                        if (ids != null)
+                            for (long id : ids) {
+                                Log.i("Hidden id=" + id);
+                                for (String key : values.keySet())
+                                    values.get(key).remove(id);
+                                bodies.remove(id);
+                                html.remove(id);
+                                attachments.remove(id);
+                            }
+                    }
+                });
                 break;
 
             case SEARCH:

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

@@ -744,7 +744,8 @@ public class ServiceSynchronize extends LifecycleService {
                                                 long uid = ifolder.getUID(imessage);
 
                                                 DB db = DB.getInstance(ServiceSynchronize.this);
-                                                int count = db.message().deleteMessage(folder.id, uid);
+                                                int count = db.message().setMessageUiHide(folder.id, uid, true);
+                                                // Will be deleted on next sync
 
                                                 Log.i(folder.name + " deleted uid=" + uid + " count=" + count);
                                             } catch (MessageRemovedException ex) {