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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_SCANNING_FAST_PAIR_FAST_PAIR_SCANNER_IMPL_H_
#define ASH_QUICK_PAIR_SCANNING_FAST_PAIR_FAST_PAIR_SCANNER_IMPL_H_
#include <map>
#include <set>
#include <string>
#include "ash/quick_pair/scanning/fast_pair/fast_pair_scanner.h"
#include "base/containers/flat_map.h"
#include "base/memory/scoped_refptr.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "base/scoped_observation.h"
#include "device/bluetooth/bluetooth_adapter.h"
#include "device/bluetooth/bluetooth_device.h"
#include "device/bluetooth/bluetooth_low_energy_scan_session.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace ash {
namespace quick_pair {
// This registers a BluetoothLowEnergyScanner with the Advertisement Monitoring
// API and exposes the Fast Pair devices found/lost events to its observers.
class FastPairScannerImpl
: public FastPairScanner,
public device::BluetoothAdapter::Observer,
public device::BluetoothLowEnergyScanSession::Delegate {
public:
class Factory {
public:
static scoped_refptr<FastPairScanner> Create();
static void SetFactoryForTesting(Factory* g_test_factory);
protected:
virtual ~Factory();
virtual scoped_refptr<FastPairScanner> CreateInstance() = 0;
private:
static Factory* g_test_factory_;
};
// FastPairScanner::Observer
void AddObserver(FastPairScanner::Observer* observer) override;
void RemoveObserver(FastPairScanner::Observer* observer) override;
void OnDevicePaired(scoped_refptr<Device> device) override;
FastPairScannerImpl();
FastPairScannerImpl(const FastPairScannerImpl&) = delete;
FastPairScannerImpl& operator=(const FastPairScannerImpl&) = delete;
private:
~FastPairScannerImpl() override;
void StartScanning();
// device::BluetoothAdapter::Observer
void DeviceChanged(device::BluetoothAdapter* adapter,
device::BluetoothDevice* device) override;
void DeviceRemoved(device::BluetoothAdapter* adapter,
device::BluetoothDevice* device) override;
void DevicePairedChanged(device::BluetoothAdapter* adapter,
device::BluetoothDevice* device,
bool new_paired_status) override;
// device::BluetoothLowEnergyScanSession::Delegate
void OnDeviceFound(device::BluetoothLowEnergyScanSession* scan_session,
device::BluetoothDevice* device) override;
void OnDeviceLost(device::BluetoothLowEnergyScanSession* scan_session,
device::BluetoothDevice* device) override;
void OnSessionStarted(
device::BluetoothLowEnergyScanSession* scan_session,
std::optional<device::BluetoothLowEnergyScanSession::ErrorCode>
error_code) override;
void OnSessionInvalidated(
device::BluetoothLowEnergyScanSession* scan_session) override;
// Internal method called by BluetoothAdapterFactory to provide the adapter
// object.
void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
void NotifyDeviceFound(device::BluetoothDevice* device);
scoped_refptr<base::SequencedTaskRunner> task_runner_;
// Map of a Bluetooth device address to a set of advertisement data we have
// seen.
std::map<std::string, std::set<std::vector<uint8_t>>>
device_address_advertisement_data_map_;
base::flat_map<std::string, std::string> ble_address_to_classic_;
std::unique_ptr<device::BluetoothLowEnergyScanSession>
background_scan_session_;
scoped_refptr<device::BluetoothAdapter> adapter_;
base::ObserverList<FastPairScanner::Observer> observers_;
base::ScopedObservation<device::BluetoothAdapter,
device::BluetoothAdapter::Observer>
adapter_observation_{this};
base::WeakPtrFactory<FastPairScannerImpl> weak_ptr_factory_{this};
};
} // namespace quick_pair
} // namespace ash
#endif // ASH_QUICK_PAIR_SCANNING_FAST_PAIR_FAST_PAIR_SCANNER_IMPL_H_
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