// Copyright (2019-2022) Paul Scherrer Institute
// SPDX-License-Identifier: GPL-3.0-or-later

#ifndef DIFFRACTIONEXPERIMENT_H
#define DIFFRACTIONEXPERIMENT_H

#include <chrono>
#include <exception>
#include <mutex>

#include <jfjoch.pb.h>

#include "../compression/CompressionAlgorithmEnum.h"

#include "UnitCell.h"
#include "Coord.h"
#include "Definitions.h"
#include "../frame_serialize/StartMessage.h"
#include "../frame_serialize/EndMessage.h"
#include "DetectorSetup.h"

enum class DetectorMode : int {
    Conversion, Raw, PedestalG0, PedestalG1, PedestalG2
};

class DiffractionExperiment {
    JFJochProtoBuf::DatasetSettings dataset;
    JFJochProtoBuf::InternalSettings internal;

    constexpr static const int64_t max_spot_count = 100;
    DiffractionExperiment& SetUnitCell(const JFJochProtoBuf::UnitCell &input);
public:
    // Public methods are atomic
    DiffractionExperiment();
    DiffractionExperiment(const DetectorSetup& geom);
    explicit DiffractionExperiment(const JFJochProtoBuf::JungfraujochSettings &settings);

    // Methods below can be chained together
    DiffractionExperiment& Detector(const DetectorSetup& input);
    DiffractionExperiment& Mode(DetectorMode input);
    DiffractionExperiment& DataStreams(int64_t input);

    DiffractionExperiment& Import(const JFJochProtoBuf::JungfraujochSettings &settings);

    DiffractionExperiment& ImagesPerTrigger(int64_t input);
    DiffractionExperiment& NumTriggers(int64_t triggers);

    DiffractionExperiment& PedestalG0Frames(int64_t input);
    DiffractionExperiment& PedestalG1Frames(int64_t input);
    DiffractionExperiment& PedestalG2Frames(int64_t input);
    DiffractionExperiment& FrameTime(std::chrono::microseconds frame_time,
                                     std::chrono::microseconds in_count_time = std::chrono::microseconds(0));
    DiffractionExperiment& Summation(int64_t input);
    DiffractionExperiment& ImageTimeUs(std::chrono::microseconds image_time);

    DiffractionExperiment& PedestalG1G2FrameTime(std::chrono::microseconds input);
    DiffractionExperiment& PhotonEnergy_keV(float input);
    DiffractionExperiment& BeamX_pxl(float input);
    DiffractionExperiment& BeamY_pxl(float input);
    DiffractionExperiment& DetectorDistance_mm(float input);

    DiffractionExperiment& ScatteringVector(Coord input);
    DiffractionExperiment& ScatteringVector();
    DiffractionExperiment& FilePrefix(std::string input);
    DiffractionExperiment& DataFileCount(int64_t input);

    DiffractionExperiment& Compression(JFJochProtoBuf::Compression input);
    DiffractionExperiment& PreviewPeriod(std::chrono::microseconds input);
    DiffractionExperiment& SpotFindingPeriod(std::chrono::microseconds input);

    DiffractionExperiment& UseInternalPacketGenerator(bool input);
    DiffractionExperiment& IPv4BaseAddr(std::string input);
    DiffractionExperiment& MaskModuleEdges(bool input);
    DiffractionExperiment& MaskChipEdges(bool input);
    DiffractionExperiment& SetUnitCell(const UnitCell &cell);
    DiffractionExperiment& SetUnitCell();

    DiffractionExperiment& LowResForRadialInt_A(float input);
    DiffractionExperiment& HighResForRadialInt_A(float input);
    DiffractionExperiment& LowQForRadialInt_recipA(float input);
    DiffractionExperiment& HighQForRadialInt_recipA(float input);
    DiffractionExperiment& QSpacingForRadialInt_recipA(float input);

    DiffractionExperiment& SpaceGroupNumber(int64_t input);
    DiffractionExperiment& StorageCells(int64_t input);
    DiffractionExperiment& StorageCellStart(int64_t input = 15);
    DiffractionExperiment& SampleName(std::string input);

    DiffractionExperiment& ConversionOnCPU(bool input);
    DiffractionExperiment& SourceName(std::string input);
    DiffractionExperiment& SourceNameShort(std::string input);
    DiffractionExperiment& InstrumentName(std::string input);
    DiffractionExperiment& InstrumentNameShort(std::string input);
    DiffractionExperiment& Binning2x2(bool input);
    DiffractionExperiment& ApplyPixelMaskInFPGA(bool input);

    operator JFJochProtoBuf::JungfraujochSettings() const;
    operator JFJochProtoBuf::DetectorInput() const;

    void FillMessage(StartMessage &message) const;

     JFJochProtoBuf::DetectorConfig DetectorConfig(const JFJochProtoBuf::ReceiverNetworkConfig& net_config) const;
    void LoadDatasetSettings(const JFJochProtoBuf::DatasetSettings &settings);
    void LoadDetectorSettings(const JFJochProtoBuf::DetectorSettings &settings);
    JFJochProtoBuf::DetectorSettings GetDetectorSettings() const;

    static void CheckDataProcessingSettings(const JFJochProtoBuf::DataProcessingSettings& settings);
    static JFJochProtoBuf::DataProcessingSettings DefaultDataProcessingSettings();
    DetectorMode GetDetectorMode() const;

    int64_t GetPixelDepth() const;
    bool IsPixelSigned() const;
    int64_t GetOverflow() const;
    int64_t GetUnderflow() const;

    int64_t GetNumTriggers() const;
    int64_t GetImageNum() const;
    int64_t GetImageNumPerTrigger() const;

    int64_t GetPedestalG0Frames() const;
    int64_t GetPedestalG1Frames() const;
    int64_t GetPedestalG2Frames() const;

    int64_t GetFrameNum() const;
    int64_t GetFrameNumPerTrigger() const;

    std::chrono::microseconds GetFrameTime() const;
    std::chrono::microseconds GetImageTime() const;

    int64_t GetSummation() const;
    std::chrono::microseconds GetImageCountTime() const;
    std::chrono::microseconds GetFrameCountTime() const;

    float GetPhotonEnergy_keV() const;
    float GetWavelength_A() const;
    float GetBeamX_pxl() const;
    float GetBeamY_pxl() const;
    float GetDetectorDistance_mm() const;

    Coord GetScatteringVector() const;

    std::string GetFilePrefix() const;
    int64_t GetDataFileCount() const;

    JFJochProtoBuf::Compression GetCompressionAlgorithm() const;
    CompressionAlgorithm GetCompressionAlgorithmEnum() const;

    int64_t GetMaxCompressedSize() const;

    int64_t GetDataStreamsNum() const;
    int64_t GetModulesNum(uint16_t data_stream = TASK_NO_DATA_STREAM) const;
    int64_t GetFirstModuleOfDataStream(uint16_t data_stream) const;

    int64_t GetPixelsNum() const;
    int64_t GetPixelsNumFullImage() const; // before filters, like ROI or binning

    int64_t GetYPixelsNum() const;
    int64_t GetYPixelsNumFullImage() const; // before filters, like ROI or binning

    int64_t GetXPixelsNum() const;
    int64_t GetXPixelsNumFullImage() const; // before filters, like ROI or binning

    int64_t GetPixel0OfModule(uint16_t module_number) const; // before filters, like ROI or binning
    int64_t GetModuleFastDirectionStep(uint16_t module_number) const; // before filters, like ROI or binning
    int64_t GetModuleSlowDirectionStep(uint16_t module_number) const; // before filters, like ROI or binning

    std::chrono::microseconds GetPreviewPeriod() const;
    int64_t GetPreviewStride() const;
    std::chrono::microseconds GetSpotFindingPeriod() const;
    int64_t GetSpotFindingStride() const;

    int64_t GetSpotFindingBin() const;

    int64_t GetPreviewStride(std::chrono::microseconds period) const;
    bool IsUsingInternalPacketGen() const;

    uint32_t GetSrcIPv4Address(uint32_t data_stream, uint32_t half_module) const;

    bool CheckGitSha1Consistent() const;
    std::string CheckGitSha1Msg() const;

    bool GetMaskModuleEdges() const;
    bool GetMaskChipEdges() const;
    UnitCell GetUnitCell() const;
    bool HasUnitCell() const;

    float ResToPxl(float resolution) const;
    Coord LabCoord(float detector_x, float detector_y) const;
    float PxlToRes(float detector_x, float detector_y) const;
    float CalcRadIntSolidAngleCorr(float q) const;

    float GetLowQForRadialInt_recipA() const;
    float GetHighQForRadialInt_recipA() const;
    float GetQSpacingForRadialInt_recipA() const;

    int64_t GetSpaceGroupNumber() const;

    int64_t GetStorageCellNumber() const;
    int64_t GetStorageCellStart() const;

    JFJochProtoBuf::DetectorType GetDetectorType() const;
    int64_t GetMaxSpotCount() const;
    std::string GetSampleName() const;

    bool GetConversionOnCPU() const;
    bool GetConversionOnFPGA() const;

    bool GetApplyPixelMaskInFPGA() const;
    float GetPixelSize_mm() const;
    bool GetBinning2x2() const;

    std::string GetSourceName() const;
    std::string GetSourceNameShort() const;
    std::string GetInstrumentName() const;
    std::string GetInstrumentNameShort() const;
    std::string GetDetectorDescription() const;

    void GetDetectorModuleHostname(std::vector<std::string>& output) const;
    bool GetPedestalWithExternalTrigger() const;
};

inline int64_t CalculateStride(const std::chrono::microseconds &frame_time, const std::chrono::microseconds &preview_time) {
    if ((preview_time.count() <= 0) || (frame_time.count() <= 0))
        return 0;
    else if (preview_time < frame_time)
        return 1;
    else
        return preview_time / frame_time;
}

#endif //DIFFRACTIONEXPERIMENT_H