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// Copyright 2020 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_NEARBY_SHARING_CERTIFICATES_NEARBY_SHARE_CERTIFICATE_STORAGE_H_
#define CHROME_BROWSER_NEARBY_SHARING_CERTIFICATES_NEARBY_SHARE_CERTIFICATE_STORAGE_H_
#include <optional>
#include "base/functional/callback.h"
#include "base/time/time.h"
#include "chrome/browser/nearby_sharing/certificates/nearby_share_private_certificate.h"
#include "chromeos/ash/services/nearby/public/mojom/nearby_share_settings.mojom.h"
#include "third_party/nearby/sharing/proto/rpc_resources.pb.h"
// Stores local-device private certificates and remote-device public
// certificates. Provides methods to help manage certificate expiration. Due to
// the potentially large number of public certificates, some methods are
// asynchronous.
class NearbyShareCertificateStorage {
public:
using ResultCallback = base::OnceCallback<void(bool)>;
using PublicCertificateCallback = base::OnceCallback<void(
bool,
std::unique_ptr<std::vector<nearby::sharing::proto::PublicCertificate>>)>;
NearbyShareCertificateStorage() = default;
virtual ~NearbyShareCertificateStorage() = default;
// Returns all public certificates currently in storage. No RPC call is made.
virtual void GetPublicCertificates(PublicCertificateCallback callback) = 0;
// Returns all private certificates currently in storage. Will return
// std::nullopt if deserialization from prefs fails -- not expected to happen
// under normal circumstances.
virtual std::optional<std::vector<NearbySharePrivateCertificate>>
GetPrivateCertificates() const = 0;
// Returns the next time a certificate expires or std::nullopt if no
// certificates are present.
std::optional<base::Time> NextPrivateCertificateExpirationTime();
virtual std::optional<base::Time> NextPublicCertificateExpirationTime()
const = 0;
// Deletes existing private certificates and replaces them with
// |private_certificates|.
virtual void ReplacePrivateCertificates(
const std::vector<NearbySharePrivateCertificate>&
private_certificates) = 0;
// Overwrites an existing record with |private_certificate| if that records
// has the same ID . If no such record exists in storage, no action is taken.
// This method is necessary for updating the private certificate's list of
// consumed salts.
void UpdatePrivateCertificate(
const NearbySharePrivateCertificate& private_certificate);
// Adds public certificates, or replaces existing certificates
// by secret_id
virtual void AddPublicCertificates(
const std::vector<nearby::sharing::proto::PublicCertificate>&
public_certificates,
ResultCallback callback) = 0;
// Removes all private certificates from storage with expiration date after
// |now|.
void RemoveExpiredPrivateCertificates(base::Time now);
// Removes all public certificates from storage with expiration date after
// |now|.
virtual void RemoveExpiredPublicCertificates(base::Time now,
ResultCallback callback) = 0;
// Delete all private certificates from memory and persistent storage.
void ClearPrivateCertificates();
// Delete private certificates with |visibility| from memory and persistent
// storage.
void ClearPrivateCertificatesOfVisibility(
nearby_share::mojom::Visibility visibility);
};
#endif // CHROME_BROWSER_NEARBY_SHARING_CERTIFICATES_NEARBY_SHARE_CERTIFICATE_STORAGE_H_
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