#include "CondCore/Utilities/interface/PayloadInspectorModule.h"
#include "CondCore/Utilities/interface/PayloadInspector.h"
#include "CondCore/CondDB/interface/Time.h"
#include "DataFormats/EcalDetId/interface/EBDetId.h"
#include "DataFormats/EcalDetId/interface/EEDetId.h"
#include "CondCore/EcalPlugins/plugins/EcalDrawUtils.h"
#include "CondCore/EcalPlugins/plugins/EcalFunctionParametersUtils.h"
// the data format of the condition to be inspected
#include "CondFormats/EcalObjects/interface/EcalClusterEnergyCorrectionParameters.h"

#include "TH2F.h"  // a 2-D histogram with four bytes per cell (float)
#include "TCanvas.h"
#include "TLine.h"
#include "TStyle.h"
#include "TLatex.h"  //write mathematical equations.
#include "TPave.h"
#include "TPaveStats.h"
#include <string>
#include <fstream>
#include <cmath>

namespace {
  /*****************************************
 2d plot of Ecal Cluster Energy Correction Parameters of 1 IOV
 ******************************************/
  class EcalClusterEnergyCorrectionParametersPlot
      : public cond::payloadInspector::PlotImage<EcalClusterEnergyCorrectionParameters> {
  public:
    EcalClusterEnergyCorrectionParametersPlot()
        : cond::payloadInspector::PlotImage<EcalClusterEnergyCorrectionParameters>(
              "Ecal Cluster Energy Correction Parameters - map ") {
      setSingleIov(true);
    }

    bool fill(const std::vector<std::tuple<cond::Time_t, cond::Hash> >& iovs) override {
      auto iov = iovs.front();  //get reference to 1st element in the vector iovs
      std::shared_ptr<EcalClusterEnergyCorrectionParameters> payload =
          fetchPayload(std::get<1>(iov));   //std::get<1>(iov) refers to the Hash in the tuple iov
      unsigned int run = std::get<0>(iov);  //referes to Time_t in iov.
      TH2F* align;                          //pointer to align which is a 2D histogram

      int gridRows;
      int NbColumns;

      if (payload.get()) {  //payload is an iov retrieved from payload using hash.
        align = new TH2F("", "", 0, 0, 0, 0, 0, 0);
        fillFunctionParamsValues(
            align, (*payload).params(), "Ecal Cluster Energy Correction Parameters", gridRows, NbColumns);

      }  // if payload.get()
      else
        return false;

      gStyle->SetPalette(1);
      gStyle->SetOptStat(0);
      TCanvas canvas("CC map", "CC map", 1000, 1000);
      TLatex t1;
      t1.SetNDC();
      t1.SetTextAlign(26);
      t1.SetTextSize(0.04);
      t1.SetTextColor(2);
      t1.DrawLatex(0.5, 0.96, Form("Ecal Cluster Energy Correction Parameters, IOV %i", run));

      TPad* pad = new TPad("pad", "pad", 0.0, 0.0, 1.0, 0.94);
      pad->Draw();
      pad->cd();
      align->Draw("TEXT");

      drawTable(gridRows, NbColumns);

      align->GetXaxis()->SetTickLength(0.);
      align->GetXaxis()->SetLabelSize(0.);
      align->GetYaxis()->SetTickLength(0.);
      align->GetYaxis()->SetLabelSize(0.);

      std::string ImageName(m_imageFileName);
      canvas.SaveAs(ImageName.c_str());
      return true;
    }  // fill method
  };

}  // namespace

// Register the classes as boost python plugin
PAYLOAD_INSPECTOR_MODULE(EcalClusterEnergyCorrectionParameters) {
  PAYLOAD_INSPECTOR_CLASS(EcalClusterEnergyCorrectionParametersPlot);
}
