#ifndef MCP_h
#define MCP_h

/*********************************************
 * This is online analyzer for MCP, ANL
 * 
 * Created by Khushi @ 2024-03-27
 * 
 * ******************************************/
#include "Analyser.h"


class MCP : public Analyzer{



public:
  MCP(Digitizer ** digi, unsigned int nDigi, QMainWindow * parent = nullptr): Analyzer(digi, nDigi, parent){


    SetUpdateTimeInSec(1.0);

    RedefineEventBuilder({0}); // only builder for the 0-th digitizer.
    tick2ns = digi[0]->GetTick2ns();

    SetBackwardBuild(false, 100); // using normal building (acceding in time) or backward building, int the case of backward building, default events to be build is 100. 
    evtbder = GetEventBuilder();
    evtbder->SetTimeWindow(500);
 
    //========== use the influx from the Analyzer
    influx = new InfluxDB("https://fsunuc.physics.fsu.edu/influx/");
    dataBaseName = "testing"; 

    SetUpCanvas(); // see below

  };

  void SetUpCanvas();

public slots:
  void UpdateHistograms();


private:

  MultiBuilder *evtbder;

  Histogram2D * hPID;
  
  Histogram2D * hXX; // X1 versus X2 : e[1] versus e[0]
  Histogram2D * hYY; // Y1 versus Y2 : e[3] versus e[2]
  
  Histogram1D * hX; // X position:((e[0]-e[1])/(e[0]+e[1]))
  Histogram1D * hY; // Y position:((e[2]-e[3])/(e[2]+e[3]))
  
  Histogram2D * hXY; // 2D position plot: ((e[2]-e[3])/(e[2]+e[3])) versus ((e[0]-e[1])/(e[0]+e[1]))
  
  Histogram1D * he0; // e0: signal 0
  Histogram1D * he1; // e1: signal 1
  Histogram1D * he2; // e2: signal 2
  Histogram1D * he3; // e3: signal 3
	
  
  int tick2ns;
  
  float dE, E;
  unsigned long long dE_t, E_t;
  
  float e0, e1, e2, e3;
  unsigned long long t0, t1, t2, t3;

};


inline void MCP::SetUpCanvas(){

  setGeometry(0, 0, 2000, 800);  

  //============ histograms
  hPID = new Histogram2D("MCP", "E", "dE", 100, 0, 5000, 100, 0, 5000, this);
  layout->addWidget(hPID, 0, 0); 
  
  hXY = new Histogram2D("2D position plot", "X position", "Y position", 100, -1, 1, 100, -1, 1, this);
  layout->addWidget(hXY, 0, 1);
  
  hXX = new Histogram2D("X1 versus X2", "X2", "X1", 100, 0, 5000, 100, 0, 5000, this);
  layout->addWidget(hXX, 0, 2); 
  
  hYY = new Histogram2D("Y1 versus Y2", "Y2", "Y1", 100, 0, 3000, 100, 0, 3000, this);
  layout->addWidget(hYY, 1, 0);
  
  hX = new Histogram1D("X position", "X", 300, -1, 1, this);
  layout->addWidget(hX, 1, 1);
  
  hY = new Histogram1D("Y position", "Y", 300, -1, 1, this);
  layout->addWidget(hY, 1, 2);
  /*  UNCOMMENT THESE LINES TO SEE INDIVIDUAL SIGNALS
  he0 = new Histogram1D("Signal 0", "e0", 300, -1, 1, this);
  layout->addWidget(he0, 0, 3);
  
  he1 = new Histogram1D("Signal 1", "e1", 300, -1, 1, this);
  layout->addWidget(he1, 0, 4);
  
  he2 = new Histogram1D("Signal 2", "e2", 300, -1, 1, this);
  layout->addWidget(he2, 1, 3);
  
  he3 = new Histogram1D("Signal 3", "e3", 300, -1, 1, this);
  layout->addWidget(he3, 1, 4);
  */
}

inline void MCP::UpdateHistograms(){

  if( this->isVisible() == false ) return;
  
  BuildEvents(false); // call the event builder to build events

  //============ Get events, and do analysis
  long eventBuilt = evtbder->eventBuilt;
  if( eventBuilt == 0 ) return;

  //============ Get the cut list, if any
  QList<QPolygonF> cutList = hPID->GetCutList();
  const int nCut = cutList.count();
  unsigned long long tMin[nCut] = {0xFFFFFFFFFFFFFFFF}, tMax[nCut] = {0};
  unsigned int count[nCut]={0};

  //============ Processing data and fill histograms
  long eventIndex = evtbder->eventIndex;
  long eventStart = eventIndex - eventBuilt + 1;
  if(eventStart < 0 ) eventStart += MaxNEvent;
  
  for( long i = eventStart ; i <= eventIndex; i ++ ){
    std::vector<Hit> event = evtbder->events[i];
    //printf("-------------- %ld\n", i);

    if( event.size() == 0 ) return;
   
    for( int k = 0; k < (int) event.size(); k++ ){
      //event[k].Print();
      if( event[k].ch == 0 ) {dE = event[k].energy; dE_t = event[k].timestamp;}
      if( event[k].ch == 1 ) {E = event[k].energy;   E_t = event[k].timestamp;}
      
      if( event[k].ch == 2 ) {e0 = event[k].energy; t0 = event[k].timestamp;}
      if( event[k].ch == 3 ) {e1= event[k].energy;  t1 = event[k].timestamp;}
            
      if( event[k].ch == 4 ) {e2 = event[k].energy; t2 = event[k].timestamp;}
      if( event[k].ch == 5 ) {e3= event[k].energy;  t3 = event[k].timestamp;}

    }

    // printf("(E, dE) = (%f, %f)\n", E, dE);
    hPID->Fill(E + RandomGauss(0, 100), dE+ RandomGauss(0, 100)); // x, y
    hXX->Fill(e1, e0); //
	hYY->Fill(e3, e2);
	hXY->Fill(((e0-e1)/(e0+e1)),((e2-e3)/(e2+e3)));
    hX->Fill(((e0-e1)/(e0+e1)));
	hY->Fill(((e2-e3)/(e2+e3)));
	he0->Fill(e0);
	he1->Fill(e1);
	he2->Fill(e2);
	he3->Fill(e3);
	
	
    //check events inside any Graphical cut and extract the rate
    for(int p = 0; p < cutList.count(); p++ ){ 
      if( cutList[p].isEmpty() ) continue;
      if( cutList[p].containsPoint(QPointF(E, dE), Qt::OddEvenFill) ){
        if( dE_t < tMin[p] ) tMin[p] = dE_t;
        if( dE_t > tMax[p] ) tMax[p] = dE_t;
        count[p] ++;
        //printf(".... %d \n", count[p]);
      }
    }
  }

  hPID->UpdatePlot();
  hXX->UpdatePlot();//
  hYY->UpdatePlot();
  hXY->UpdatePlot();
  hX->UpdatePlot();
  hY->UpdatePlot();
  he0->UpdatePlot();
  he1->UpdatePlot();
  he2->UpdatePlot();
  he3->UpdatePlot();
  
  
  
  //========== output to Influx
  QList<QString> cutNameList = hPID->GetCutNameList();
  for( int p = 0; p < cutList.count(); p ++){
    if( cutList[p].isEmpty() ) continue;
    double dT = (tMax[p]-tMin[p]) * tick2ns / 1e9; // tick to sec
    double rate = count[p]*1.0/(dT);
    //printf("%llu %llu, %f %d\n", tMin[p], tMax[p], dT, count[p]);
    //printf("%10s | %d | %f Hz \n", cutNameList[p].toStdString().c_str(), count[p], rate);  
    
    influx->AddDataPoint("Cut,name=" + cutNameList[p].toStdString()+ " value=" + std::to_string(rate));
    influx->WriteData(dataBaseName);
    influx->ClearDataPointsBuffer();
  }
}


#endif