improvements to sync logic

common/todo.go

@@ -80,3 +80,10 @@ func (t Todo) IsEqual(other Todo) bool {
 		t.Owner == other.Owner &&
 		t.Deleted == other.Deleted
 }
+
+func (t Todo) IsEqualIgnoringStatus(other Todo) bool {
+	return t.Name == other.Name &&
+		t.Description == other.Description &&
+		t.Owner == other.Owner &&
+		t.Deleted == other.Deleted
+}

server/handler/syncHandler.go

@@ -35,19 +35,33 @@ func SyncHandler(w http.ResponseWriter, r *http.Request) {
 	for _, clientTodo := range todoList.Todos {
 		serverTodo, exists := serverTodos[clientTodo.Name]
 
-		if clientTodo.Deleted && clientTodo.LastModified.After(serverTodo.LastModified) {
+		if !exists {
+			if clientTodo.Deleted {
+				continue
+			}
+			err = clientTodo.Store(store, user)
+			if handleError(w, http.StatusInternalServerError, err) {
+				return
+			}
+			serverTodos[clientTodo.Name] = clientTodo
+			continue
+		}
+		if clientTodo.Deleted {
+			if clientTodo.LastModified.After(serverTodo.LastModified) {
 				err = store.RemoveValueFromBucket(user, clientTodo.Name)
 				if handleError(w, http.StatusInternalServerError, err) {
 					return
 				}
-		} else if !exists {
+				delete(serverTodos, clientTodo.Name)
+			}
+		} else if !serverTodo.IsEqual(clientTodo) {
+			if serverTodo.IsEqualIgnoringStatus(clientTodo) && clientTodo.LastModified.After(serverTodo.LastModified) {
 				err = clientTodo.Store(store, user)
 				if handleError(w, http.StatusInternalServerError, err) {
 					return
 				}
 				serverTodos[clientTodo.Name] = clientTodo
 			} else {
-			if !serverTodo.IsEqual(clientTodo) {
 				response.MisMatchingTodos = append(response.MisMatchingTodos, common.MisMatchingTodo{
 					ServerTodo: serverTodo,
 					LocalTodo:  clientTodo,