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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_ICON_STORE_H_
#define CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_ICON_STORE_H_
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/notifications/proto/icon.pb.h"
#include "chrome/browser/notifications/scheduler/internal/icon_converter.h"
#include "chrome/browser/notifications/scheduler/internal/icon_converter_result.h"
#include "chrome/browser/notifications/scheduler/internal/icon_entry.h"
#include "chrome/browser/notifications/scheduler/public/notification_data.h"
#include "components/leveldb_proto/public/proto_database.h"
// Forward declaration for proto conversion.
namespace leveldb_proto {
void DataToProto(notifications::IconEntry* icon_entry,
notifications::proto::Icon* proto);
void ProtoToData(notifications::proto::Icon* proto,
notifications::IconEntry* icon_entry);
} // namespace leveldb_proto
namespace notifications {
// Storage interface used to read/write icon data, each time only one icon can
// be loaded into memory.
class IconStore {
public:
using LoadedIconsMap = std::map<std::string /*icons_uuid*/, IconBundle>;
using IconTypeUuidMap = std::map<IconType, std::string>;
using IconTypeBundleMap = std::map<IconType, IconBundle>;
using LoadedIconKeys = std::unique_ptr<std::vector<std::string>>;
using InitAndLoadKeysCallback =
base::OnceCallback<void(bool, LoadedIconKeys)>;
using LoadIconsCallback = base::OnceCallback<void(bool, LoadedIconsMap)>;
using AddCallback = base::OnceCallback<void(IconTypeUuidMap, bool)>;
using UpdateCallback = base::OnceCallback<void(bool)>;
// Initializes the storage, and load all keys.
virtual void InitAndLoadKeys(InitAndLoadKeysCallback callback) = 0;
// Loads multiple icons.
virtual void LoadIcons(const std::vector<std::string>& keys,
LoadIconsCallback callback) = 0;
// Adds multiple icons to storage.
virtual void AddIcons(IconTypeBundleMap icons, AddCallback callback) = 0;
// Deletes multiple icons.
virtual void DeleteIcons(const std::vector<std::string>& keys,
UpdateCallback callback) = 0;
IconStore() = default;
IconStore(const IconStore&) = delete;
IconStore& operator=(const IconStore&) = delete;
virtual ~IconStore() = default;
};
// IconStore implementation backed by a proto database.
class IconProtoDbStore : public IconStore {
public:
explicit IconProtoDbStore(
std::unique_ptr<leveldb_proto::ProtoDatabase<proto::Icon, IconEntry>> db,
std::unique_ptr<IconConverter> icon_converter);
IconProtoDbStore(const IconProtoDbStore&) = delete;
IconProtoDbStore& operator=(const IconProtoDbStore&) = delete;
~IconProtoDbStore() override;
private:
// IconStore implementation.
void InitAndLoadKeys(InitAndLoadKeysCallback callback) override;
void LoadIcons(const std::vector<std::string>& keys,
LoadIconsCallback callback) override;
void AddIcons(IconTypeBundleMap icons, AddCallback callback) override;
void DeleteIcons(const std::vector<std::string>& keys,
UpdateCallback callback) override;
// Called when the proto database is initialized.
void OnDbInitialized(InitAndLoadKeysCallback callback,
leveldb_proto::Enums::InitStatus status);
// Called when the icon keys are retrieved from the database.
void OnIconKeysLoaded(InitAndLoadKeysCallback callback,
bool success,
LoadedIconKeys icon_keys);
// Called when the icons are retrieved from the database.
void OnIconEntriesLoaded(
LoadIconsCallback callback,
bool success,
std::unique_ptr<std::map<std::string, IconEntry>> icon_entries);
// Called when the icons are encoded.
void OnIconsEncoded(AddCallback callback,
std::vector<IconType> icons_type,
std::vector<std::string> icons_uuid,
std::unique_ptr<EncodeResult> encode_result);
// Called when the encoded data are decoded.
void OnIconsDecoded(LoadIconsCallback callback,
std::vector<std::string> icons_uuid,
std::unique_ptr<DecodeResult> decode_result);
// The proto database instance that persists data.
std::unique_ptr<leveldb_proto::ProtoDatabase<proto::Icon, IconEntry>> db_;
// Help serializing icons to disk and deserializing encoded data to icons.
std::unique_ptr<IconConverter> icon_converter_;
base::WeakPtrFactory<IconProtoDbStore> weak_ptr_factory_{this};
};
} // namespace notifications
#endif // CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_ICON_STORE_H_
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