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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_QUICK_PAIR_PAIRING_PAIRER_BROKER_IMPL_H_
#define ASH_QUICK_PAIR_PAIRING_PAIRER_BROKER_IMPL_H_
#include <memory>
#include <optional>
#include <string>
#include "ash/quick_pair/common/account_key_failure.h"
#include "ash/quick_pair/common/pair_failure.h"
#include "ash/quick_pair/common/protocol.h"
#include "ash/quick_pair/pairing/pairer_broker.h"
#include "base/containers/flat_map.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
namespace device {
class BluetoothAdapter;
} // namespace device
namespace ash {
namespace quick_pair {
class Device;
class FastPairPairer;
class PairerBrokerImpl final : public PairerBroker {
public:
PairerBrokerImpl();
PairerBrokerImpl(const PairerBrokerImpl&) = delete;
PairerBrokerImpl& operator=(const PairerBrokerImpl&) = delete;
~PairerBrokerImpl() override;
// PairingBroker:
void AddObserver(Observer* observer) override;
void RemoveObserver(Observer* observer) override;
void PairDevice(scoped_refptr<Device> device) override;
bool IsPairing() override;
void StopPairing() override;
friend class PairerBrokerImplTest;
private:
void OnBleAddressRotation(scoped_refptr<Device> device);
void PairFastPairDevice(scoped_refptr<Device> device);
void OnFastPairDeviceBonded(scoped_refptr<Device> device);
void OnFastPairBondingFailure(scoped_refptr<Device> device,
PairFailure failure);
void OnAccountKeyFailure(scoped_refptr<Device> device,
AccountKeyFailure failure);
void OnFastPairProcedureComplete(scoped_refptr<Device> device);
void OnDisplayPasskey(std::u16string device_name, uint32_t passkey);
void CreateHandshake(scoped_refptr<Device> device);
void OnHandshakeComplete(scoped_refptr<Device> device,
std::optional<PairFailure> failure);
void OnHandshakeFailure(scoped_refptr<Device> device, PairFailure failure);
void StartBondingAttempt(scoped_refptr<Device> device);
// Internal method called by BluetoothAdapterFactory to provide the adapter
// object.
void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
void EraseHandshakeAndFromPairers(scoped_refptr<Device> device);
// The key for all the following maps is a device model id.
base::flat_map<std::string, std::unique_ptr<FastPairPairer>>
fast_pair_pairers_;
base::flat_map<std::string, int> pair_failure_counts_;
base::flat_map<std::string, bool>
did_handshake_previously_complete_successfully_map_;
base::flat_map<std::string, int> num_handshake_attempts_;
base::flat_map<std::string, std::string> model_id_to_current_ble_address_map_;
scoped_refptr<device::BluetoothAdapter> adapter_;
base::ObserverList<Observer> observers_;
// Timer to provide a delay after cancelling pairing.
base::OneShotTimer cancel_pairing_timer_;
base::OneShotTimer retry_handshake_timer_;
base::WeakPtrFactory<PairerBrokerImpl> weak_pointer_factory_{this};
};
} // namespace quick_pair
} // namespace ash
#endif // ASH_QUICK_PAIR_PAIRING_PAIRER_BROKER_IMPL_H_
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