File: bookmark_local_data_batch_uploader.h

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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_LOCAL_DATA_BATCH_UPLOADER_H_
#define COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_LOCAL_DATA_BATCH_UPLOADER_H_

#include <vector>

#include "base/memory/raw_ptr.h"
#include "components/sync/service/data_type_local_data_batch_uploader.h"

class GURL;

namespace bookmarks {
class BookmarkModel;
class BookmarkNode;
}  // namespace bookmarks

class PrefService;

namespace sync_bookmarks {

class BookmarkModelViewUsingLocalOrSyncableNodes;

class BookmarkLocalDataBatchUploader
    : public syncer::DataTypeLocalDataBatchUploader {
 public:
  // `bookmark_model` must either be null or non-null and outlive this object.
  // `pref_service` mut not be null and must outlive this object.
  BookmarkLocalDataBatchUploader(bookmarks::BookmarkModel* bookmark_model,
                                 PrefService* pref_service);

  BookmarkLocalDataBatchUploader(const BookmarkLocalDataBatchUploader&) =
      delete;
  BookmarkLocalDataBatchUploader& operator=(
      const BookmarkLocalDataBatchUploader&) = delete;

  ~BookmarkLocalDataBatchUploader() override;

  // syncer::DataTypeLocalDataBatchUploader implementation.
  void GetLocalDataDescription(
      base::OnceCallback<void(syncer::LocalDataDescription)> callback) override;
  void TriggerLocalDataMigration() override;
  void TriggerLocalDataMigrationForItems(
      std::vector<syncer::LocalDataItemModel::DataId> items) override;

 private:
  bool CanUpload() const;

  // Returns the URLs of all the bookmarked items in the subtree (including
  // subtree_root).
  std::vector<GURL> GetBookmarkedUrlsInSubtree(
      const BookmarkModelViewUsingLocalOrSyncableNodes&
          local_or_syncable_bookmark_model_view,
      const bookmarks::BookmarkNode* subtree_root) const;

  // Returns the `LocalDataItemModel` corresponding to the given `node`.
  //
  // For folders:
  // - title: <folder title>
  // - subtitle: "<N> bookmarks", where N is the total number of children
  //             (folders or bookmarks)
  //
  // For bookmarks:
  // - title: <bookmark title>
  // - subtitle: empty
  syncer::LocalDataItemModel DataItemModelFromNode(
      const bookmarks::BookmarkNode* node,
      int bookmarked_urls_count) const;

  const raw_ptr<bookmarks::BookmarkModel> bookmark_model_;
  const raw_ptr<PrefService> pref_service_;
};

}  // namespace sync_bookmarks

#endif  // COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_LOCAL_DATA_BATCH_UPLOADER_H_