cs_NearestCrownstoneTracker.h

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/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: Nov 17, 2020
 * License: LGPLv3+, Apache License 2.0, and/or MIT (triple-licensed)
 */
 
#pragma once
 
#include <common/cs_Component.h>
#include <events/cs_EventListener.h>
#include <localisation/cs_AssetHandler.h>
#include <localisation/cs_AssetRecord.h>
#include <localisation/cs_AssetStore.h>
#include <localisation/cs_TrackableEvent.h>
#include <protocol/cs_Typedefs.h>
#include <protocol/mesh/cs_MeshModelPackets.h>
 
class NearestCrownstoneTracker : public EventListener, public Component {
    static constexpr uint8_t LAST_RECEIVED_TIMEOUT_THRESHOLD        = 180;
    static constexpr uint16_t MIN_THROTTLED_ADVERTISEMENT_PERIOD_MS = 100;
 
    static constexpr uint8_t RSSI_FALL_OFF_RATE_DB_PER_S            = 1;
    static constexpr int8_t RSSI_CUT_OFF_THRESHOLD                  = -90;
 
    enum class FilterStrategy { TIME_OUT, RSSI_FALL_OFF };
 
    static constexpr auto FILTER_STRATEGY = FilterStrategy::TIME_OUT;
 
public:
    cs_ret_code_t init() override;
 
    bool handleAcceptedAsset(const scanned_device_t& asset, const asset_id_t& id, uint8_t filterBitmask);
 
private:
    // cached objects for efficiency
    stone_id_t _myStoneId;
    AssetStore* _assetStore;
 
    // -------------------------------------------
    // ------------- Incoming events -------------
    // -------------------------------------------
 
    void handleMeshMsgEvent(event_t& evt);
 
    void handleAssetAcceptedEvent(event_t& evt);
 
    bool onReceiveAssetAdvertisement(cs_mesh_model_msg_asset_report_id_t& trackedEvent);
 
    void onReceiveAssetReport(cs_mesh_model_msg_asset_report_id_t& report, stone_id_t reporter);
 
    // -------------------------------------------
    // ------------- Outgoing events -------------
    // -------------------------------------------
 
    void broadcastReport(cs_mesh_model_msg_asset_report_id_t& report);
 
    void broadcastPersonalReport(asset_record_t& record);
 
    void sendUartUpdate(asset_record_t& record);
 
    void onWinnerChanged(bool winnerIsThisCrownstone);
 
    // ---------------------------------
    // ------------- Utils -------------
    // ---------------------------------
 
    void saveWinningReport(asset_record_t& rec, rssi_and_channel_t winningRssi, stone_id_t winningId);
 
    asset_record_t* getRecordFiltered(const asset_id_t& assetId);
 
public:
    void handleEvent(event_t& evt);
};