Added daily folder cleanup

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

@@ -82,6 +82,9 @@ public interface DaoFolder {
             " WHERE folder.id = :id")
     LiveData<TupleFolderEx> liveFolderEx(long id);
 
+    @Query("SELECT * FROM folder ORDER BY account, name")
+    List<EntityFolder> getFolders();
+
     @Query("SELECT * FROM folder WHERE id = :id")
     EntityFolder getFolder(Long id);
 

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

@@ -28,6 +28,7 @@ import android.content.Context;
 import android.util.Log;
 
 import java.io.File;
+import java.util.Calendar;
 import java.util.Date;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -66,6 +67,25 @@ public class JobDaily extends JobService {
 
                     Log.i(Helper.TAG, "Start daily job");
 
+                    // Cleanup folders
+                    Log.i(Helper.TAG, "Cleanup folders");
+                    for (EntityFolder folder : db.folder().getFolders()) {
+                        Calendar cal_keep = Calendar.getInstance();
+                        cal_keep.add(Calendar.DAY_OF_MONTH, -folder.keep_days);
+                        cal_keep.set(Calendar.HOUR_OF_DAY, 0);
+                        cal_keep.set(Calendar.MINUTE, 0);
+                        cal_keep.set(Calendar.SECOND, 0);
+                        cal_keep.set(Calendar.MILLISECOND, 0);
+
+                        long keep_time = cal_keep.getTimeInMillis();
+                        if (keep_time < 0)
+                            keep_time = 0;
+
+                        int messages = db.message().deleteMessagesBefore(folder.id, keep_time, false);
+                        Log.i(Helper.TAG, "Cleanup folder=" + folder.account + ":" + folder.name +
+                                " deleted before=" + new Date(keep_time) + " count=" + messages);
+                    }
+
                     // Cleanup message files
                     Log.i(Helper.TAG, "Cleanup message files");
                     File[] messages = new File(getFilesDir(), "messages").listFiles();