// -----------------------------------------------------------------------------
// -----                                                                   -----
// -----                   CbmMcbm2018UnpackerTaskHodo                     -----
// -----              Created 31/07/19  by P.-A. Loizeau                   -----
// -----                                                                   -----
// -----------------------------------------------------------------------------

#include "CbmMcbm2018UnpackerTaskHodo.h"

#include "CbmMcbm2018UnpackerAlgoHodo.h"
#include "CbmMcbm2018HodoPar.h"
#include "CbmStsDigi.h"

#include "FairLogger.h"
#include "FairRootManager.h"
#include "FairRun.h"
#include "FairRuntimeDb.h"
#include "FairRunOnline.h"
#include "FairParGenericSet.h"

#include "THttpServer.h"
#include "TROOT.h"
#include "TString.h"
#include "TClonesArray.h"
#include <TFile.h>

#include <iostream>
#include <stdint.h>
#include <iomanip>
#include <fstream>
#include <chrono>

Bool_t bMcbm2018UnpackerTaskHodoResetHistos = kFALSE;

CbmMcbm2018UnpackerTaskHodo::CbmMcbm2018UnpackerTaskHodo( UInt_t /*uNbGdpb*/ )
  : CbmMcbmUnpack(),
    fbMonitorMode( kFALSE ),
    fbWriteOutput( kTRUE ),
    fulTsCounter( 0 ),
    fStsDigiCloneArray(),
    fUnpackerAlgo( nullptr )
{
   fUnpackerAlgo = new CbmMcbm2018UnpackerAlgoHodo();
}

CbmMcbm2018UnpackerTaskHodo::~CbmMcbm2018UnpackerTaskHodo()
{
   delete fUnpackerAlgo;
}

Bool_t CbmMcbm2018UnpackerTaskHodo::Init()
{
   LOG(info) << "CbmMcbm2018UnpackerTaskHodo::Init";
   LOG(info) << "Initializing mCBM STS 2018 Unpacker";

   FairRootManager* ioman = FairRootManager::Instance();
   if( NULL == ioman )
   {
      LOG(fatal) << "No FairRootManager instance";
   }

   /// Check first if array not already existing due to STS unpacker!
   fStsDigiCloneArray = static_cast<TClonesArray*>(ioman->GetObject("CbmStsDigi"));
   if( nullptr == fStsDigiCloneArray )
   {
      /// No existing array => create it!
      fStsDigiCloneArray= new TClonesArray("CbmStsDigi", 10);
      if( nullptr == fStsDigiCloneArray )
      {
         LOG(fatal) << "Failed creating the STS Digi TClonesarray ";
      } // if( nullptr == fStsDigiCloneArray )
      ioman->Register("CbmStsDigi", "STS raw Digi", fStsDigiCloneArray, fbWriteOutput);
   } // if( nullptr == fStsDigiCloneArray )
      else LOG(info) << "--> Found existing TClonesArray with STS digis, probably from STS, re-using it.";

   return kTRUE;
}

void CbmMcbm2018UnpackerTaskHodo::SetParContainers()
{
   LOG(info) << "Setting parameter containers for " << GetName();

   TList* fParCList = fUnpackerAlgo->GetParList();

   for( Int_t iparC = 0; iparC < fParCList->GetEntries(); ++iparC )
   {
      FairParGenericSet* tempObj = (FairParGenericSet*)(fParCList->At(iparC));
      fParCList->Remove(tempObj);

      std::string sParamName{ tempObj->GetName() };
      FairParGenericSet* newObj = dynamic_cast<FairParGenericSet*>( FairRun::Instance()->GetRuntimeDb()->getContainer( sParamName.data() ) );

      if( nullptr == newObj )
      {
         LOG(error) << "Failed to obtain parameter container " << sParamName
                    << ", for parameter index " << iparC;
         return;
      } // if( nullptr == newObj )

      fParCList->AddAt(newObj, iparC);
//      delete tempObj;
   } // for( Int_t iparC = 0; iparC < fParCList->GetEntries(); ++iparC )
}

Bool_t CbmMcbm2018UnpackerTaskHodo::InitContainers()
{
   LOG(info) << "Init parameter containers for " << GetName();

   /// Control flags
   CbmMcbm2018HodoPar * pUnpackPar = dynamic_cast<CbmMcbm2018HodoPar*>( FairRun::Instance()->GetRuntimeDb()->getContainer( "CbmMcbm2018HodoPar" ) );
   if( nullptr == pUnpackPar )
   {
      LOG(error) << "Failed to obtain parameter container CbmMcbm2018HodoPar";
      return kFALSE;
   } // if( nullptr == pUnpackPar )
/*
   fbMonitorMode = pUnpackPar->GetMonitorMode();
   LOG(info) << "Monitor mode:       "
             << ( fbMonitorMode ? "ON" : "OFF" );

   fbDebugMonitorMode = pUnpackPar->GetDebugMonitorMode();
   LOG(info) << "Debug Monitor mode: "
             << ( fbDebugMonitorMode ? "ON" : "OFF" );
*/
   Bool_t initOK = fUnpackerAlgo->InitContainers();

   /// If monitor mode enabled, trigger histos creation, obtain pointer on them and add them to the HTTP server
   if( kTRUE == fbMonitorMode )
   {
      /// Trigger histo creation on all associated algos
      initOK &= fUnpackerAlgo->CreateHistograms();

      /// Obtain vector of pointers on each histo from the algo (+ optionally desired folder)
      std::vector< std::pair< TNamed *, std::string > > vHistos = fUnpackerAlgo->GetHistoVector();

      /// Register the histos in the HTTP server
      THttpServer* server = FairRunOnline::Instance()->GetHttpServer();
      if( nullptr != server )
      {
         for( UInt_t uHisto = 0; uHisto < vHistos.size(); ++uHisto )
         {
            server->Register( Form( "/%s", vHistos[ uHisto ].second.data() ), vHistos[ uHisto ].first );
         } // for( UInt_t uHisto = 0; uHisto < vHistos.size(); ++uHisto )

         server->RegisterCommand("/Reset_UnpHodo_Hist", "bMcbm2018UnpackerTaskHodoResetHistos=kTRUE");
         server->Restrict("/Reset_UnpHodo_Hist", "allow=admin");
      } // if( nullptr != server )

   } // if( kTRUE == fbMonitorMode )

   fUnpackerAlgo->SetMonitorMode( fbMonitorMode );

   return initOK;
}

Bool_t CbmMcbm2018UnpackerTaskHodo::ReInitContainers()
{
   LOG(info) << "ReInit parameter containers for " << GetName();
   Bool_t initOK = fUnpackerAlgo->ReInitContainers();

   return initOK;
}

void CbmMcbm2018UnpackerTaskHodo::AddMsComponentToList( size_t component, UShort_t usDetectorId )
{
   fUnpackerAlgo->AddMsComponentToList( component, usDetectorId );
}

Bool_t CbmMcbm2018UnpackerTaskHodo::DoUnpack(const fles::Timeslice& ts, size_t /*component*/)
{
   if( fbMonitorMode && bMcbm2018UnpackerTaskHodoResetHistos )
   {
      LOG(info) << "Reset STS unpacker histos ";
      fUnpackerAlgo->ResetHistograms();
      bMcbm2018UnpackerTaskHodoResetHistos = kFALSE;
   } // if( fbMonitorMode && bMcbm2018UnpackerTaskHodoResetHistos )

   if( kFALSE == fUnpackerAlgo->ProcessTs( ts ) )
   {
      LOG(error) << "Failed processing TS " << ts.index()
                 << " in unpacker algorithm class";
      return kTRUE;
   } // if( kFALSE == fUnpackerAlgo->ProcessTs( ts ) )

   /// Copy the digis in the DaqBuffer
   std::vector< CbmStsDigi > vDigi = fUnpackerAlgo->GetVector();

   /// Sort the buffers of hits due to the time offsets applied
   sort(vDigi.begin(), vDigi.end(),
        [](const CbmStsDigi & a, const CbmStsDigi & b) -> bool
        {
          return a.GetTime() < b.GetTime();
        });

   for( auto digi: vDigi) {
     /// Insert data in output container
     LOG(debug) << "Fill digi TClonesarray with "
                << Form("0x%08x", digi.GetAddress())
                << " at " << static_cast<Int_t>( fStsDigiCloneArray->GetEntriesFast() );

     new( (*fStsDigiCloneArray)[ fStsDigiCloneArray->GetEntriesFast() ] )
       CbmStsDigi( digi) ;
   }

   vDigi.clear();
   fUnpackerAlgo->ClearVector();

   if( 0 == fulTsCounter % 10000 )
      LOG(info) << "Processed " << fulTsCounter << "TS";
   fulTsCounter++;

   return kTRUE;
}

void CbmMcbm2018UnpackerTaskHodo::Reset()
{
   fStsDigiCloneArray->Clear();
}

void CbmMcbm2018UnpackerTaskHodo::Finish()
{
   /// If monitor mode enabled, trigger histos creation, obtain pointer on them and add them to the HTTP server
   if( kTRUE == fbMonitorMode )
   {
      /// Obtain vector of pointers on each histo from the algo (+ optionally desired folder)
      std::vector< std::pair< TNamed *, std::string > > vHistos = fUnpackerAlgo->GetHistoVector();

      /// (Re-)Create ROOT file to store the histos
      TDirectory * oldDir = NULL;
      TFile * histoFile = NULL;
      // Store current directory position to allow restore later
      oldDir = gDirectory;
      // open separate histo file in recreate mode
      histoFile = new TFile( "data/HistosUnpackerSts.root" , "RECREATE");
      histoFile->cd();

      /// Register the histos in the HTTP server
      for( UInt_t uHisto = 0; uHisto < vHistos.size(); ++uHisto )
      {
         /// Make sure we end up in chosen folder
         TString sFolder = vHistos[ uHisto ].second.data();
         if( nullptr == gDirectory->Get( sFolder ) )
            gDirectory->mkdir( sFolder );
         gDirectory->cd( sFolder );

         /// Write plot
         vHistos[ uHisto ].first->Write();

         histoFile->cd();
      } // for( UInt_t uHisto = 0; uHisto < vHistos.size(); ++uHisto )

     // Restore original directory position
     oldDir->cd();
     histoFile->Close();
   } // if( kTRUE == fbMonitorMode )
}

void CbmMcbm2018UnpackerTaskHodo::SetIgnoreOverlapMs( Bool_t bFlagIn )
{
   fUnpackerAlgo->SetIgnoreOverlapMs( bFlagIn );
}

void CbmMcbm2018UnpackerTaskHodo::SetTimeOffsetNs( Double_t dOffsetIn )
{
   fUnpackerAlgo->SetTimeOffsetNs( dOffsetIn );
}

void CbmMcbm2018UnpackerTaskHodo::SetTimeOffsetNsAsic( UInt_t uAsicIdx, Double_t dOffsetIn )
{
   return fUnpackerAlgo->SetTimeOffsetNsAsic( uAsicIdx, dOffsetIn );
}

ClassImp(CbmMcbm2018UnpackerTaskHodo)