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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <functional>
#include <unordered_map>
#include "types/raw_address.h"
namespace bluetooth {
namespace shim {
using CallbackLegacy =
std::function<bool(const RawAddress& address, const int id)>;
/**
* Initialize the allocator
*
* @param paired_device_map map from mac_address to id already saved
* in the disk before init
* @param save_id_callback a callback that will be called after successfully
* saving id for a paired device
* @param forget_device_callback a callback that will be called after
* successful id deletion for forgotten device,
* @return true if successfully initialized
*/
bool InitMetricIdAllocator(
const std::unordered_map<RawAddress, int>& paired_device_map,
CallbackLegacy save_id_callback, CallbackLegacy forget_device_callback);
/**
* Close the allocator. should be called when Bluetooth process is killed
*
* @return true if successfully close
*/
bool CloseMetricIdAllocator();
/**
* Check if no id saved in memory
*
* @return true if no id is saved
*/
bool IsEmptyMetricIdAllocator();
/**
* Allocate an id for a scanned device, or return the id if there is already
* one
*
* @param raw_address mac address of Bluetooth device
* @return the id of device
*/
int AllocateIdFromMetricIdAllocator(const RawAddress& raw_address);
/**
* Save the id for a paired device
*
* @param raw_address mac address of Bluetooth device
* @return true if save successfully
*/
bool SaveDeviceOnMetricIdAllocator(const RawAddress& raw_address);
/**
* Delete the id for a device to be forgotten
*
* @param raw_address mac address of Bluetooth device
*/
void ForgetDeviceFromMetricIdAllocator(const RawAddress& raw_address);
/**
* Check if an id is valid.
* The id should be less than or equal to kMaxId and bigger than or equal to
* kMinId
*
* @param mac_address mac address of Bluetooth device
* @return true if delete successfully
*/
bool IsValidIdFromMetricIdAllocator(const int id);
} // namespace shim
} // namespace bluetooth
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