/* Copyright (c) 2011-2014, 2016-2020 The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation, nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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 /*
 Changes from Qualcomm Innovation Center are provided under the following license:

 Copyright (c) 2022, 2023 Qualcomm Innovation Center, Inc. All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted (subject to the limitations in the
 disclaimer below) provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above
 copyright notice, this list of conditions and the following
 disclaimer in the documentation and/or other materials provided
 with the distribution.

 * Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
 contributors may be used to endorse or promote products derived
 from this software without specific prior written permission.

 NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
 GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
 HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef LOC_API_BASE_H
#define LOC_API_BASE_H

#include <stddef.h>
#include <ctype.h>
#include <gps_extended.h>
#include <LocationAPI.h>
#include <MsgTask.h>
#include <LocSharedLock.h>
#include <log_util.h>
#ifdef NO_UNORDERED_SET_OR_MAP
    #include <map>
#else
    #include <unordered_map>
#endif
#include <inttypes.h>
#include <functional>

using namespace loc_util;

namespace loc_core {

class ContextBase;
struct LocApiResponse;
template <typename> struct LocApiResponseData;

int hexcode(char *hexstring, int string_size,
            const char *data, int data_size);
int decodeAddress(char *addr_string, int string_size,
                  const char *data, int data_size);

#define MAX_ADAPTERS          10
#define MAX_FEATURE_LENGTH    100

#define TO_ALL_ADAPTERS(adapters, call)                                \
    for (int i = 0; i < MAX_ADAPTERS && NULL != (adapters)[i]; i++) {  \
        call;                                                          \
    }

#define TO_1ST_HANDLING_ADAPTER(adapters, call)                              \
    for (int i = 0; i <MAX_ADAPTERS && NULL != (adapters)[i] && !(call); i++);

class LocAdapterBase;
struct LocSsrMsg;
struct LocOpenMsg;

typedef struct
{
    uint32_t accumulatedDistance;
    uint32_t numOfBatchedPositions;
} LocApiBatchData;

typedef struct
{
    uint32_t hwId;
} LocApiGeofenceData;

struct LocApiMsg: LocMsg {
    private:
        std::function<void ()> mProcImpl;
        inline virtual void proc() const {
            mProcImpl();
        }
    public:
        inline LocApiMsg(std::function<void ()> procImpl ) :
                         mProcImpl(procImpl) {}
};

class LocApiProxyBase {
public:
    inline LocApiProxyBase() {}
    inline virtual ~LocApiProxyBase() {}
    inline virtual void* getSibling2() { return NULL; }
    inline virtual double getGloRfLoss(uint32_t left __unused,
            uint32_t center __unused, uint32_t right __unused, uint8_t gloFrequency __unused) { return 0.0; }
    inline virtual float getGeoidalSeparation(double latitude __unused, double longitude __unused) { return 0.0; }
    inline virtual bool checkFeatureStatus(int* fids __unused, LocFeatureStatus* status __unused,
            uint32_t idCount __unused, bool __unused directQwesCall = false) {return false;}
};

class LocApiBase {
    friend struct LocSsrMsg;
    //LocOpenMsg calls open() which makes it necessary to declare
    //it as a friend
    friend struct LocOpenMsg;
    friend struct LocCloseMsg;
    friend struct LocKillMsg;
    friend class ContextBase;
    static MsgTask* mMsgTask;
    static volatile int32_t mMsgTaskRefCount;
    LocAdapterBase* mLocAdapters[MAX_ADAPTERS];

protected:
    ContextBase *mContext;
    virtual enum loc_api_adapter_err
        open(LOC_API_ADAPTER_EVENT_MASK_T mask);
    virtual enum loc_api_adapter_err
        close();
    LOC_API_ADAPTER_EVENT_MASK_T getEvtMask();
    LOC_API_ADAPTER_EVENT_MASK_T mMask;
    uint32_t mNmeaMask;
    LocApiBase(LOC_API_ADAPTER_EVENT_MASK_T excludedMask,
               ContextBase* context = NULL);
    inline virtual ~LocApiBase() {
        android_atomic_dec(&mMsgTaskRefCount);
        if (nullptr != mMsgTask && 0 == mMsgTaskRefCount) {
            delete mMsgTask;
            mMsgTask = nullptr;
        }
    }
    bool isInSession();
    const LOC_API_ADAPTER_EVENT_MASK_T mExcludedMask;

public:
    bool isMaster();
    inline void sendMsg(const LocMsg* msg) const {
        if (nullptr != mMsgTask) {
            mMsgTask->sendMsg(msg);
        }
    }
    inline MsgTask* getMsgTask() const {
        return mMsgTask;
    }
    inline void destroy() {
        close();
        struct LocKillMsg : public LocMsg {
            LocApiBase* mLocApi;
            inline LocKillMsg(LocApiBase* locApi) : LocMsg(), mLocApi(locApi) {}
            inline virtual void proc() const {
                delete mLocApi;
            }
        };
        sendMsg(new LocKillMsg(this));
    }

    static bool needReport(const UlpLocation& ulpLocation,
                           enum loc_sess_status status,
                           LocPosTechMask techMask);

    void addAdapter(LocAdapterBase* adapter);
    void removeAdapter(LocAdapterBase* adapter);

    // upward calls
    void handleEngineUpEvent();
    void handleEngineDownEvent();
    void reportPosition(UlpLocation& location,
                        GpsLocationExtended& locationExtended,
                        enum loc_sess_status status,
                        LocPosTechMask loc_technology_mask =
                                  LOC_POS_TECH_MASK_DEFAULT,
                        GnssDataNotification* pDataNotify = nullptr,
                        int msInWeek = -1);
    void reportSv(GnssSvNotification& svNotify);
    void reportSvPolynomial(GnssSvPolynomial &svPolynomial);
    void reportSvEphemeris(GnssSvEphemerisReport &svEphemeris);
    void reportStatus(LocGpsStatusValue status);
    void reportNmea(const char* nmea, int length);
    void reportData(GnssDataNotification& dataNotify, int msInWeek);
    void reportXtraServer(const char* url1, const char* url2,
                          const char* url3, const int maxlength);
    void reportLocationSystemInfo(const LocationSystemInfo& locationSystemInfo);
    void requestXtraData();
    void requestTime();
    void requestLocation();
    void requestATL(int connHandle, LocAGpsType agps_type, LocApnTypeMask apn_type_mask);
    void releaseATL(int connHandle);
    void requestNiNotify(GnssNiNotification &notify, const void* data,
                         const LocInEmergency emergencyState);
    void reportGnssMeasurements(GnssMeasurements& gnssMeasurements, int msInWeek);
    void reportWwanZppFix(LocGpsLocation &zppLoc);
    void reportZppBestAvailableFix(LocGpsLocation &zppLoc, GpsLocationExtended &location_extended,
            LocPosTechMask tech_mask);
    void reportGnssSvIdConfig(const GnssSvIdConfig& config);
    void reportGnssSvTypeConfig(const GnssSvTypeConfig& config);
    void requestOdcpi(OdcpiRequestInfo& request);
    void reportGnssEngEnergyConsumedEvent(uint64_t energyConsumedSinceFirstBoot);
    void reportDeleteAidingDataEvent(GnssAidingData& aidingData);
    void reportKlobucharIonoModel(GnssKlobucharIonoModel& ionoModel);
    void reportGnssAdditionalSystemInfo(GnssAdditionalSystemInfo& additionalSystemInfo);
    void sendNfwNotification(GnssNfwNotification& notification);
    void reportGnssConfig(uint32_t sessionId, const GnssConfig& gnssConfig);
    void reportLatencyInfo(GnssLatencyInfo& gnssLatencyInfo);
    void reportQwesCapabilities
    (
        const std::unordered_map<LocationQwesFeatureType, bool> &featureMap
    );

    void geofenceBreach(size_t count, uint32_t* hwIds, Location& location,
            GeofenceBreachType breachType, uint64_t timestamp);
    void geofenceStatus(GeofenceStatusAvailable available);
    void reportDBTPosition(UlpLocation &location,
                           GpsLocationExtended &locationExtended,
                           enum loc_sess_status status,
                           LocPosTechMask loc_technology_mask);
    void reportLocations(Location* locations, size_t count, BatchingMode batchingMode);
    void reportCompletedTrips(uint32_t accumulated_distance);
    void handleBatchStatusEvent(BatchingStatus batchStatus);

    // downward calls
    virtual void* getSibling();
    virtual LocApiProxyBase* getLocApiProxy();
    virtual void startFix(const LocPosMode& fixCriteria, LocApiResponse* adapterResponse);
    virtual void stopFix(LocApiResponse* adapterResponse);
    virtual void deleteAidingData(const GnssAidingData& data, LocApiResponse* adapterResponse);
    virtual void injectPosition(double latitude, double longitude, float accuracy,
            bool onDemandCpi);
    virtual void injectPosition(const GnssLocationInfoNotification &locationInfo,
            bool onDemandCpi=false);
    virtual void injectPosition(const Location& location, bool onDemandCpi);
    virtual void setTime(LocGpsUtcTime time, int64_t timeReference, int uncertainty);
    virtual void atlOpenStatus(int handle, int is_succ, char* apn, uint32_t apnLen,
            AGpsBearerType bear, LocAGpsType agpsType, LocApnTypeMask mask);
    virtual void atlCloseStatus(int handle, int is_succ);
    virtual LocationError setServerSync(const char* url, int len, LocServerType type);
    virtual LocationError setServerSync(unsigned int ip, int port, LocServerType type);
    virtual void informNiResponse(GnssNiResponse userResponse, const void* passThroughData);
    virtual LocationError setSUPLVersionSync(GnssConfigSuplVersion version);
    virtual enum loc_api_adapter_err setNMEATypesSync(uint32_t typesMask);
    virtual LocationError setLPPConfigSync(GnssConfigLppProfileMask profileMask);
    virtual enum loc_api_adapter_err setSensorPropertiesSync(
            bool gyroBiasVarianceRandomWalk_valid, float gyroBiasVarianceRandomWalk,
            bool accelBiasVarianceRandomWalk_valid, float accelBiasVarianceRandomWalk,
            bool angleBiasVarianceRandomWalk_valid, float angleBiasVarianceRandomWalk,
            bool rateBiasVarianceRandomWalk_valid, float rateBiasVarianceRandomWalk,
            bool velocityBiasVarianceRandomWalk_valid, float velocityBiasVarianceRandomWalk);
    virtual enum loc_api_adapter_err setSensorPerfControlConfigSync(int controlMode,
            int accelSamplesPerBatch, int accelBatchesPerSec, int gyroSamplesPerBatch,
            int gyroBatchesPerSec, int accelSamplesPerBatchHigh, int accelBatchesPerSecHigh,
            int gyroSamplesPerBatchHigh, int gyroBatchesPerSecHigh, int algorithmConfig);
    virtual LocationError
            setAGLONASSProtocolSync(GnssConfigAGlonassPositionProtocolMask aGlonassProtocol);
    virtual LocationError setLPPeProtocolCpSync(GnssConfigLppeControlPlaneMask lppeCP);
    virtual LocationError setLPPeProtocolUpSync(GnssConfigLppeUserPlaneMask lppeUP);
    virtual GnssConfigSuplVersion convertSuplVersion(const uint32_t suplVersion);
    virtual GnssConfigLppeControlPlaneMask convertLppeCp(const uint32_t lppeControlPlaneMask);
    virtual GnssConfigLppeUserPlaneMask convertLppeUp(const uint32_t lppeUserPlaneMask);
    virtual LocationError setEmergencyExtensionWindowSync(const uint32_t emergencyExtensionSeconds);
    virtual void setMeasurementCorrections(
            const GnssMeasurementCorrections& gnssMeasurementCorrections);

    virtual void getWwanZppFix();
    virtual void getBestAvailableZppFix();
    virtual LocationError setGpsLockSync(GnssConfigGpsLock lock);
    virtual void requestForAidingData(GnssAidingDataSvMask svDataMask);
    virtual LocationError setXtraVersionCheckSync(uint32_t check);
    /* Requests for SV/Constellation Control */
    virtual LocationError setBlacklistSvSync(const GnssSvIdConfig& config);
    virtual void setBlacklistSv(const GnssSvIdConfig& config,
                                LocApiResponse *adapterResponse=nullptr);
    virtual void getBlacklistSv();
    virtual void setConstellationControl(const GnssSvTypeConfig& config,
                                         LocApiResponse *adapterResponse=nullptr);
    virtual void getConstellationControl();
    virtual void resetConstellationControl(LocApiResponse *adapterResponse=nullptr);

    virtual void setConstrainedTuncMode(bool enabled,
                                        float tuncConstraint,
                                        uint32_t energyBudget,
                                        LocApiResponse* adapterResponse=nullptr);
    virtual void setPositionAssistedClockEstimatorMode(bool enabled,
                                                       LocApiResponse* adapterResponse=nullptr);
    virtual void getGnssEnergyConsumed();

    virtual void addGeofence(uint32_t clientId, const GeofenceOption& options,
            const GeofenceInfo& info, LocApiResponseData<LocApiGeofenceData>* adapterResponseData);
    virtual void removeGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
    virtual void pauseGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
    virtual void resumeGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
    virtual void modifyGeofence(uint32_t hwId, uint32_t clientId, const GeofenceOption& options,
             LocApiResponse* adapterResponse);

    virtual void startTimeBasedTracking(const TrackingOptions& options,
             LocApiResponse* adapterResponse);
    virtual void stopTimeBasedTracking(LocApiResponse* adapterResponse);
    virtual void startDistanceBasedTracking(uint32_t sessionId, const LocationOptions& options,
             LocApiResponse* adapterResponse);
    virtual void stopDistanceBasedTracking(uint32_t sessionId,
             LocApiResponse* adapterResponse = nullptr);
    virtual void startBatching(uint32_t sessionId, const LocationOptions& options,
            uint32_t accuracy, uint32_t timeout, LocApiResponse* adapterResponse);
    virtual void stopBatching(uint32_t sessionId, LocApiResponse* adapterResponse);
    virtual LocationError startOutdoorTripBatchingSync(uint32_t tripDistance,
            uint32_t tripTbf, uint32_t timeout);
    virtual void startOutdoorTripBatching(uint32_t tripDistance,
            uint32_t tripTbf, uint32_t timeout, LocApiResponse* adapterResponse);
    virtual void reStartOutdoorTripBatching(uint32_t ongoingTripDistance,
            uint32_t ongoingTripInterval, uint32_t batchingTimeout,
            LocApiResponse* adapterResponse);
    virtual LocationError stopOutdoorTripBatchingSync(bool deallocBatchBuffer = true);
    virtual void stopOutdoorTripBatching(bool deallocBatchBuffer = true,
            LocApiResponse* adapterResponse = nullptr);
    virtual LocationError getBatchedLocationsSync(size_t count);
    virtual void getBatchedLocations(size_t count, LocApiResponse* adapterResponse);
    virtual LocationError getBatchedTripLocationsSync(size_t count, uint32_t accumulatedDistance);
    virtual void getBatchedTripLocations(size_t count, uint32_t accumulatedDistance,
            LocApiResponse* adapterResponse);
    virtual LocationError queryAccumulatedTripDistanceSync(uint32_t &accumulated_trip_distance,
            uint32_t &numOfBatchedPositions);
    virtual void queryAccumulatedTripDistance(
            LocApiResponseData<LocApiBatchData>* adapterResponseData);
    virtual void setBatchSize(size_t size);
    virtual void setTripBatchSize(size_t size);
    virtual void addToCallQueue(LocApiResponse* adapterResponse);

    void updateEvtMask();
    void updateNmeaMask(uint32_t mask);

    virtual void updateSystemPowerState(PowerStateType systemPowerState);

    virtual void configRobustLocation(bool enable, bool enableForE911,
                                      LocApiResponse* adapterResponse=nullptr);
    virtual void getRobustLocationConfig(uint32_t sessionId, LocApiResponse* adapterResponse);
    virtual void configMinGpsWeek(uint16_t minGpsWeek,
                                  LocApiResponse* adapterResponse=nullptr);
    virtual void getMinGpsWeek(uint32_t sessionId, LocApiResponse* adapterResponse);

    virtual LocationError setParameterSync(const GnssConfig & gnssConfig);
    virtual void getParameter(uint32_t sessionId, GnssConfigFlagsMask flags,
                              LocApiResponse* adapterResponse=nullptr);

    virtual void configConstellationMultiBand(const GnssSvTypeConfig& secondaryBandConfig,
                                              LocApiResponse* adapterResponse=nullptr);
    virtual void getConstellationMultiBandConfig(uint32_t sessionId,
                                        LocApiResponse* adapterResponse=nullptr);
};

class ElapsedRealtimeEstimator {
private:
    int64_t mCurrentClockDiff;
    int64_t mPrevUtcTimeNanos;
    int64_t mPrevBootTimeNanos;
    int64_t mFixTimeStablizationThreshold;
    int64_t mInitialTravelTime;
    int64_t mPrevDataTimeNanos;
public:

    ElapsedRealtimeEstimator(int64_t travelTimeNanosEstimate):
            mInitialTravelTime(travelTimeNanosEstimate) {reset();}
    int64_t getElapsedRealtimeEstimateNanos(int64_t curDataTimeNanos,
            bool isCurDataTimeTrustable, int64_t tbf);
    inline int64_t getElapsedRealtimeUncNanos() { return 5000000;}
    void reset();

    static int64_t getElapsedRealtimeQtimer(int64_t qtimerTicksAtOrigin);
    static bool getCurrentTime(struct timespec& currentTime, int64_t& sinceBootTimeNanos);
};

typedef LocApiBase* (getLocApi_t)(LOC_API_ADAPTER_EVENT_MASK_T exMask,
                                  ContextBase *context);

} // namespace loc_core

#endif //LOC_API_BASE_H