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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_DATA_SHARING_INTERNAL_COLLABORATION_GROUP_SYNC_BRIDGE_H_
#define COMPONENTS_DATA_SHARING_INTERNAL_COLLABORATION_GROUP_SYNC_BRIDGE_H_
#include <memory>
#include <optional>
#include <string>
#include <unordered_map>
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "base/sequence_checker.h"
#include "components/data_sharing/public/group_data.h"
#include "components/sync/model/data_type_local_change_processor.h"
#include "components/sync/model/data_type_store.h"
#include "components/sync/model/data_type_sync_bridge.h"
#include "components/sync/model/entity_change.h"
#include "components/sync/model/metadata_batch.h"
#include "components/sync/model/metadata_change_list.h"
#include "components/sync/model/model_error.h"
#include "components/sync/protocol/collaboration_group_specifics.pb.h"
namespace data_sharing {
// Sync bridge implementation for COLLABORATION_GROUP data type.
class CollaborationGroupSyncBridge : public syncer::DataTypeSyncBridge {
public:
class Observer : public base::CheckedObserver {
public:
Observer() = default;
~Observer() override = default;
virtual void OnGroupsUpdated(
const std::vector<GroupId>& added_group_ids,
const std::vector<GroupId>& updated_group_ids,
const std::vector<GroupId>& deleted_group_ids) = 0;
virtual void OnCollaborationGroupSyncDataLoaded() = 0;
virtual void OnSyncBridgeUpdateTypeChanged(
SyncBridgeUpdateType sync_bridge_update_type) = 0;
};
CollaborationGroupSyncBridge(
std::unique_ptr<syncer::DataTypeLocalChangeProcessor> change_processor,
syncer::OnceDataTypeStoreFactory store_factory);
CollaborationGroupSyncBridge(const CollaborationGroupSyncBridge&) = delete;
CollaborationGroupSyncBridge& operator=(const CollaborationGroupSyncBridge&) =
delete;
CollaborationGroupSyncBridge(CollaborationGroupSyncBridge&&) = delete;
CollaborationGroupSyncBridge& operator=(CollaborationGroupSyncBridge&&) =
delete;
~CollaborationGroupSyncBridge() override;
// DataTypeSyncBridge implementation.
std::unique_ptr<syncer::MetadataChangeList> CreateMetadataChangeList()
override;
std::optional<syncer::ModelError> MergeFullSyncData(
std::unique_ptr<syncer::MetadataChangeList> metadata_change_list,
syncer::EntityChangeList entity_change_list) override;
std::optional<syncer::ModelError> ApplyIncrementalSyncChanges(
std::unique_ptr<syncer::MetadataChangeList> metadata_change_list,
syncer::EntityChangeList entity_changes) override;
std::unique_ptr<syncer::DataBatch> GetDataForCommit(
StorageKeyList storage_keys) override;
std::unique_ptr<syncer::DataBatch> GetAllDataForDebugging() override;
std::string GetClientTag(
const syncer::EntityData& entity_data) const override;
std::string GetStorageKey(
const syncer::EntityData& entity_data) const override;
void ApplyDisableSyncChanges(std::unique_ptr<syncer::MetadataChangeList>
delete_metadata_change_list) override;
bool IsEntityDataValid(const syncer::EntityData& entity_data) const override;
// Own methods.
// Returns ids of all synced (not deleted) collaboration groups.
std::vector<GroupId> GetCollaborationGroupIds() const;
std::optional<sync_pb::CollaborationGroupSpecifics> GetSpecifics(
const GroupId& group_id) const;
bool IsDataLoaded() const;
// Called when user leaves or deletes a group. Because it may take some time
// for sync to invalidate the group, this method informs observers to remove
// the group from cache so they don't have to wait.
void RemoveGroupLocally(const GroupId& group_id);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
SEQUENCE_CHECKER(sequence_checker_);
// Methods used as callbacks given to `data_type_store_`.
void OnDataTypeStoreCreated(const std::optional<syncer::ModelError>& error,
std::unique_ptr<syncer::DataTypeStore> store);
void OnReadAllData(
const std::optional<syncer::ModelError>& error,
std::unique_ptr<syncer::DataTypeStore::RecordList> record_list);
void OnReadAllMetadata(const std::optional<syncer::ModelError>& error,
std::unique_ptr<syncer::MetadataBatch> metadata_batch);
void OnDataTypeStoreCommit(const std::optional<syncer::ModelError>& error);
// In charge of actually persisting data to disk, or loading previous data.
std::unique_ptr<syncer::DataTypeStore> data_type_store_;
// Set to true once data is loaded from disk and `ids_to_specifics_` contains
// the actual data.
bool is_data_loaded_ = false;
// Maps `collaboration_id` (also known as group id) to specifics. Used as
// in-memory cache of the data.
std::unordered_map<std::string, sync_pb::CollaborationGroupSpecifics>
ids_to_specifics_;
base::ObserverList<Observer> observers_;
base::WeakPtrFactory<CollaborationGroupSyncBridge> weak_ptr_factory_{this};
};
} // namespace data_sharing
#endif // COMPONENTS_DATA_SHARING_INTERNAL_COLLABORATION_GROUP_SYNC_BRIDGE_H_
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