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// Copyright 2022 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_POWER_BOOKMARKS_STORAGE_POWER_BOOKMARK_BACKEND_H_
#define COMPONENTS_POWER_BOOKMARKS_STORAGE_POWER_BOOKMARK_BACKEND_H_
#include <memory>
#include "base/files/file_path.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "components/power_bookmarks/common/power_bookmark_observer.h"
#include "components/power_bookmarks/storage/power_bookmark_database.h"
#include "components/power_bookmarks/storage/power_bookmark_sync_bridge.h"
#include "components/sync/protocol/power_bookmark_specifics.pb.h"
namespace syncer {
class DataTypeControllerDelegate;
} // namespace syncer
namespace power_bookmarks {
struct SearchParams;
// Class responsible for marshalling calls from the browser thread which the
// service is called from and the background thread which the database is
// run on. Calls to this class should be posted on the background task_runner.
class PowerBookmarkBackend : public PowerBookmarkSyncBridge::Delegate {
public:
// `database_dir` the directory to create the backend database in.
// `frontend_task_runner` the task runner which the service runs, used to
// communicate observer events back through the service.
// `service_observer` the observer the backend uses to plumb events through to
// observers of PowerBookmarkService.
PowerBookmarkBackend(
const base::FilePath& database_dir,
scoped_refptr<base::SequencedTaskRunner> frontend_task_runner,
base::WeakPtr<PowerBookmarkObserver> service_observer);
PowerBookmarkBackend(const PowerBookmarkBackend&) = delete;
PowerBookmarkBackend& operator=(const PowerBookmarkBackend&) = delete;
virtual ~PowerBookmarkBackend();
void Init(bool use_database);
// For sync codebase only: gets a weak reference to the sync controller
// delegate.
base::WeakPtr<syncer::DataTypeControllerDelegate> GetSyncControllerDelegate();
// Returns a vector of Powers for the given `url`. Use `power_type` to
// restrict which type is returned or use POWER_TYPE_UNSPECIFIED to return
// everything.
std::vector<std::unique_ptr<Power>> GetPowersForURL(
const GURL& url,
const sync_pb::PowerBookmarkSpecifics::PowerType& power_type);
// Returns a vector of PowerOverviews for the given `power_type`.
std::vector<std::unique_ptr<PowerOverview>> GetPowerOverviewsForType(
const sync_pb::PowerBookmarkSpecifics::PowerType& power_type);
// Returns a vector of Powers matching the given `search_params`.
std::vector<std::unique_ptr<Power>> SearchPowers(
const SearchParams& search_params);
// Returns a vector of PowerOverviews matching the given `search_params`.
std::vector<std::unique_ptr<PowerOverview>> SearchPowerOverviews(
const SearchParams& search_params);
// Create the given `power` in the database. If it already exists, then it
// will be updated. Returns whether the operation was successful.
bool CreatePower(std::unique_ptr<Power> power);
// Update the given `power` in the database. If it doesn't exist, then it
// will be created instead. Returns whether the operation was successful.
bool UpdatePower(std::unique_ptr<Power> power);
// Delete the given `guid` in the database, if it exists. Returns whether
// the operation was successful.
bool DeletePower(const base::Uuid& guid);
// Delete all powers for the given `url`. Success of the operation is
// returned through the given `callback`. Use `power_type` to restrict which
// type is deleted or use POWER_TYPE_UNSPECIFIED to delete everything.
bool DeletePowersForURL(
const GURL& url,
const sync_pb::PowerBookmarkSpecifics::PowerType& power_type);
// PowerBookmarkSyncBridge::Delegate
std::vector<std::unique_ptr<Power>> GetAllPowers() override;
std::vector<std::unique_ptr<Power>> GetPowersForGUIDs(
const std::vector<std::string>& guids) override;
std::unique_ptr<Power> GetPowerForGUID(const std::string& guid) override;
bool CreateOrMergePowerFromSync(const Power& power) override;
bool DeletePowerFromSync(const std::string& guid) override;
PowerBookmarkSyncMetadataDatabase* GetSyncMetadataDatabase() override;
std::unique_ptr<Transaction> BeginTransaction() override;
void NotifyPowersChanged() override;
private:
// Commit the change. If success then notify the observer, otherwise report
// error to sync.
bool CommitAndNotify(Transaction& transaction);
const base::FilePath database_dir_;
std::unique_ptr<PowerBookmarkDatabase> db_
GUARDED_BY_CONTEXT(sequence_checker_);
// Sync Bridge implementation. Only initialized when the sqlite database is
// used.
std::unique_ptr<PowerBookmarkSyncBridge> bridge_;
scoped_refptr<base::SequencedTaskRunner> frontend_task_runner_;
// Observer that serves the frontend of power bookmarks.
// Needs to be called on the frontend task runner.
base::WeakPtr<PowerBookmarkObserver> service_observer_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace power_bookmarks
#endif // COMPONENTS_POWER_BOOKMARKS_STORAGE_POWER_BOOKMARK_BACKEND_H_
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