Include Google Task children when moving tasks

app/src/main/java/com/todoroo/astrid/dao/TaskDao.java

@@ -65,6 +65,10 @@ public abstract class TaskDao {
   @Query("SELECT * FROM tasks WHERE _id IN (:taskIds)")
   public abstract List<Task> fetch(List<Long> taskIds);
 
+  @Query(
+      "SELECT tasks.* FROM tasks LEFT JOIN google_tasks ON gt_task = _id WHERE _id IN (:taskIds) AND gt_parent NOT IN (:taskIds)")
+  public abstract List<Task> fetchExcludingChildren(List<Long> taskIds);
+
   @Query("SELECT COUNT(1) FROM tasks WHERE timerStart > 0 AND deleted = 0")
   public abstract int activeTimers();
 

app/src/main/java/com/todoroo/astrid/service/TaskMover.java

@@ -1,6 +1,11 @@
 package com.todoroo.astrid.service;
 
+import static com.google.common.collect.Iterables.concat;
+import static com.google.common.collect.Iterables.transform;
+import static com.google.common.collect.Lists.transform;
 import static com.todoroo.andlib.utility.DateUtilities.now;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
 
 import com.todoroo.astrid.api.CaldavFilter;
 import com.todoroo.astrid.api.Filter;
@@ -44,7 +49,7 @@ public class TaskMover {
   }
 
   public void move(List<Long> tasks, Filter selectedList) {
-    List<Task> fetch = taskDao.fetch(tasks);
+    List<Task> fetch = taskDao.fetchExcludingChildren(tasks);
     for (Task task : fetch) {
       performMove(task, selectedList);
       task.putTransitory(SyncFlags.GTASKS_SUPPRESS_SYNC, true);
@@ -76,6 +81,7 @@ public class TaskMover {
   private void performMove(Task task, Filter selectedList) {
     long id = task.getId();
     GoogleTask googleTask = googleTaskDao.getByTaskId(id);
+    List<GoogleTask> googleTaskChildren = emptyList();
     if (googleTask != null
         && selectedList instanceof GtasksFilter
         && googleTask.getListId().equals(((GtasksFilter) selectedList).getRemoteId())) {
@@ -89,8 +95,8 @@ public class TaskMover {
     }
     task.putTransitory(SyncFlags.FORCE_SYNC, true);
     if (googleTask != null) {
-      googleTask.setDeleted(now());
-      googleTaskDao.update(googleTask);
+      googleTaskChildren = googleTaskDao.getChildren(id);
+      googleTaskDao.markDeleted(now(), id);
     }
 
     if (caldavTask != null) {
@@ -99,12 +105,25 @@ public class TaskMover {
     }
 
     if (selectedList instanceof GtasksFilter) {
-      googleTaskDao.insertAndShift(
-          new GoogleTask(id, ((GtasksFilter) selectedList).getRemoteId()),
-          preferences.addGoogleTasksToTop());
+      String listId = ((GtasksFilter) selectedList).getRemoteId();
+      googleTaskDao.insertAndShift(new GoogleTask(id, listId), preferences.addGoogleTasksToTop());
+      if (!googleTaskChildren.isEmpty()) {
+        googleTaskDao.insert(
+            transform(
+                googleTaskChildren,
+                child -> {
+                  GoogleTask newChild = new GoogleTask(child.getTask(), listId);
+                  newChild.setOrder(child.getOrder());
+                  newChild.setParent(id);
+                  return newChild;
+                }));
+      }
     } else if (selectedList instanceof CaldavFilter) {
+      String listId = ((CaldavFilter) selectedList).getUuid();
       caldavDao.insert(
-          new CaldavTask(id, ((CaldavFilter) selectedList).getUuid(), UUIDHelper.newUUID()));
+          transform(
+              concat(singletonList(id), transform(googleTaskChildren, GoogleTask::getId)),
+              _id -> new CaldavTask(_id, listId, UUIDHelper.newUUID())));
     }
   }
 }

app/src/main/java/org/tasks/data/CaldavDao.java

@@ -42,6 +42,9 @@ public interface CaldavDao {
   @Insert
   long insert(CaldavTask caldavTask);
 
+  @Insert
+  void insert(Iterable<CaldavTask> tasks);
+
   @Update
   void update(CaldavTask caldavTask);
 

app/src/main/java/org/tasks/data/GoogleTaskDao.java

@@ -16,6 +16,9 @@ public abstract class GoogleTaskDao {
   @Insert
   public abstract void insert(GoogleTask task);
 
+  @Insert
+  public abstract void insert(Iterable<GoogleTask> tasks);
+
   @Transaction
   public void insertAndShift(GoogleTask task, boolean top) {
     if (top) {
@@ -70,6 +73,9 @@ public abstract class GoogleTaskDao {
   @Update
   public abstract void update(GoogleTask googleTask);
 
+  @Query("UPDATE google_tasks SET gt_deleted = :now WHERE gt_task = :task OR gt_parent = :task")
+  public abstract void markDeleted(long now, long task);
+
   @Delete
   public abstract void delete(GoogleTask deleted);
 
@@ -88,6 +94,9 @@ public abstract class GoogleTaskDao {
   @Query("SELECT gt_task FROM google_tasks WHERE gt_parent IN (:ids)")
   public abstract List<Long> getChildren(List<Long> ids);
 
+  @Query("SELECT * FROM google_tasks WHERE gt_parent = :id AND gt_deleted = 0")
+  public abstract List<GoogleTask> getChildren(Long id);
+
   @Query(
       "SELECT IFNULL(MAX(gt_order), -1) + 1 FROM google_tasks WHERE gt_list_id = :listId AND gt_parent = :parent")
   public abstract long getBottom(String listId, long parent);