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#ifndef BeSlinkSim_HH
#define BeSlinkSim_HH

#include <iostream>
#include <iomanip>
#include <cassert>

#include "Buffering/SlinkBoe.hh"
#include "Buffering/SlinkEoe.hh"
#include "Buffering/SlinkArch.hh"

class BeSlinkSim {
  friend class BeSlinkAna;

public:
  enum {
    NumberOfParallelBuffers=2
  };
  
  enum DataRandomMethod {
    NotRandom,
    Binomial,
    Flat,
    Mixed
  };

  enum DataFormatMethod {
    FixedChannelBitmap,
    FixedChannelLabels,
    FixedMixture,
    VariableMixture
  };

  enum DataFlowMethod {
    FixedHgcrocMap,
    VariableHgcrocMap,
    EventBuild
  };

  //BeSlinkSim(unsigned e, unsigned h=18, unsigned m=0) : fEcon(e) {
  BeSlinkSim() {
  }

  void boj(unsigned s, const SlinkArch &a) {
    fSlink=a.slinkNumber();
    fSlinkArch=&a;
      
    if(fPrintLevel>0) {	
      std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::ctor() "
		<< "Entered" << std::endl;
    }

    fEventActive=false;
    fActiveInputBuffer=0;    
    fWriteElink=0;

    fArrayWrite=0;
    for(unsigned i(0);i<4;i++) fArrayWord[i]=0;

    for(unsigned e(0);e<fSlinkArch->numberOfEcons();e++) {
      const EconArch &econArch(fSlinkArch->econArch(e));
      for(unsigned b(0);b<econArch.numberOfBlocks();b++) {
	fBlockCheck[e][b].initialise(fSlinkArch->slinkNumber(),e,b,econArch.hgcrocNumber(b));
      }
    }
    

    /*
      if(false) {

      fNumberOfBlocks=1;
    
      for(unsigned h(0);h<18;h++) {
      fHgcrocNumber[0].push_back(h);
      }
      
      for(unsigned e(0);e<7;e++) {
      fElinkNumber[0].push_back(e);
      }
      
      } else {

      fNumberOfBlocks=7;

      for(unsigned h(0);h<18;h++) {
      fHgcrocNumber[h%7].push_back(h);
      }

      for(unsigned e(0);e<7;e++) {
      fElinkNumber[e].push_back(e);
      }

      }

      if(fPrintLevel>1) {
      std::cout << "BeSlinkSim::ctor() "
      << "Number of blocks = " << fNumberOfBlocks << std::endl;

      for(unsigned block(0);block<fNumberOfBlocks;block++) {
      std::cout << " Block " << block << ", HGCROCs =";
	
      for(unsigned h(0);h<fHgcrocNumber[block].size();h++) {
      std::cout << " " << fHgcrocNumber[block][h];
      }

      std::cout << ", Elinks =";

      for(unsigned e(0);e<fElinkNumber[block].size();e++) {
      std::cout << " " << fElinkNumber[block][e];
      }

      std::cout << std::endl;
      }
      }
    */


    //fHgcrocToElink[h]=(h%7);
  }

  //void slinkNumber(unsigned s) {
  //  fSlink=s;
  //}

  void processL1Accept(uint64_t bx, uint64_t l1a) {
    uint64_t d[2];
    SlinkBoe sboe(0xce00,bx&0xffffffff,l1a&0xffffffff,0xab);
    sboe.words(d);
    assert(cbBoe.writeAndIncrementPtr(d[0]));
    assert(cbBoe.writeAndIncrementPtr(d[1]));
    
    if(fPrintLevel>4) {
      std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processL1Accept(" << bx << "," << l1a << ") "
		<< "Writing Slink BOE" << std::endl;
      sboe.print();
    }
  }

  void processBx(const SlinkElinkData &d) {
    for(unsigned e(0);e<fSlinkArch->numberOfEcons();e++) processEconBx(e,d.fData[e]);

    bool done(false);
    uint128_t w;
    fNumberOfSlinkWords=0;

    for(fNumberOfSlinkWords=0;fNumberOfSlinkWords<3 && !done;) {
      if(fPrintLevel>5) {
	std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processBx() "
		  << "Number of Slink words written = " << fNumberOfSlinkWords
		  << ", event active = " << (fEventActive?"true":"false")
		  << ", done = " << (done?"true":"false")
		  << std::endl;
      }
    
      if(!fEventActive) {
	if(!cbBoe.empty()) {
	  assert(cbBoe.readAndIncrementPtr(w.first));
	  assert(cbBoe.readAndIncrementPtr(w.second));
	  fSlinkWord[fNumberOfSlinkWords]=std::pair<uint128_t,bool>(w,true);
	  fNumberOfSlinkWords++;

	  if(fPrintLevel>3) {
	    std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processBx() "
		      << "Writing Slink BOE = 0x" << std::hex << w.second << " " << w.first
		      << std::dec << std::endl;
	  }
	  
	  fEconRead=0;
	  fBlockRead=0;
	  fNumberOfEventWords=0;
	  fEventActive=true;
	} else {
	  done=true;
	}
	
      } else {
	if(fEconRead==fSlinkArch->numberOfEcons()) {
	  SlinkEoe seoe(0xce00,0x77,0xff,fNumberOfEventWords);
	  seoe.word(w);
	  fSlinkWord[fNumberOfSlinkWords]=std::pair<uint128_t,bool>(w,true);
	  fNumberOfSlinkWords++;
	  
	  if(fPrintLevel>3) {
	    std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processBx() "
		      << "Writing Slink EOE = 0x" << std::hex << w.second << " " << w.first
		      << std::dec << std::endl;
	  }
	  
	  fEventActive=false;
	  
	} else {
	  
	  for(unsigned i(0);i<4 && fEconRead<fSlinkArch->numberOfEcons() && fArrayWrite<4;i++) {
	    if(!fEventBuffer[fEconRead][fBlockRead].empty()) {
	      
	      uint64_t d;
	      assert(fEventBuffer[fEconRead][fBlockRead].readAndIncrementPtr(d));
	      fArrayWord[fArrayWrite]=(d&0xffffffff);
	      fArrayWrite++;

	      if(fPrintLevel>5) {
		std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processBx() "
			  << "Read buffer word = 0x" << std::hex << fArrayWord[fArrayWrite-1]
			  << std::dec << std::endl;
	      }

	      if(fBlockCheck[fEconRead][fBlockRead].processBx(fArrayWord[fArrayWrite-1])) fBlockRead++;

	      if(fBlockRead==fSlinkArch->econArch(fEconRead).numberOfBlocks()) {
		fBlockRead=0;
		fEconRead++;
	      }

	      if(fEconRead==fSlinkArch->numberOfEcons()) fArrayWrite=4;
	      
	    } else {
	      done=true;
	    }
	  }
	  
	  if(fArrayWrite==4) {
	    w.first=fArrayWord[1];
	    w.first=(w.first<<32)+fArrayWord[0];
	    w.second=fArrayWord[3];
	    w.second=(w.second<<32)+fArrayWord[2];
	    fSlinkWord[fNumberOfSlinkWords]=std::pair<uint128_t,bool>(w,false);
	    fNumberOfSlinkWords++;
	    fNumberOfEventWords++;
	    
	    if(fPrintLevel>3) {
	      std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "]::processBx() "
			<< "Writing Slink data word = 0x" << std::hex << w.second << " " << w.first
			<< std::dec << std::endl;
	    }
	  
	    fArrayWrite=0;
	    for(unsigned i(0);i<4;i++) fArrayWord[i]=0;
	  }
	}
      }
    }
  }

  void processEconBx(unsigned ec, const uint32_t *d) {

    // Switch for different dataflow methods

    for(unsigned w(0);w<Dimensions::MaxNumberOfElinksPerEcon;w++) {
      if(d[w]!=0) assert(fEventBuffer[ec][fSlinkArch->econArch(ec).numberOfBlocks()==1?0:w].writeAndIncrementPtr(d[w]));
    }
    
    return;
    
    uint32_t a[7];
    
    // Switch for different dataflow methods

    if(fDataFlowMethod==FixedHgcrocMap) {

#ifdef NOT_YET
      
      //  4 words per BX for 7 eLinks
      unsigned nWords(4);
      
      if(fPrintLevel>3) {
	std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
		  << "Data flow method = fixed HGCROC map, reading "
		  << nWords << " words per BX"	<< std::endl;
      }
	    
      for(unsigned b(0);b<NumberOfParallelBuffers;b++) {
	if(b!=(fActiveInputBuffer%NumberOfParallelBuffers)) {
	  
	  for(unsigned e(0);e<7;e++) {
	    if(fReadHgcroc[b]<fEconFile.fNumberOfHgcrocs) {
	      
	      for(unsigned w(0);w<nWords;w++) {
		assert(fReadHgcroc[b]<fEconFile.fNumberOfHgcrocs);
		assert(fReadWord[b]<fFirstBuffer[b][fReadHgcroc[b]].size());
		
		if(fPrintLevel>4) {
		  std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
			    << "Copying BX word " << w << " from first buffer " << b
			    << ", HGCROC " << fReadHgcroc[b] << ", word " << fReadWord[b]
			    << " of " << fFirstBuffer[b][fReadHgcroc[b]].size() << " = "
			    << std::hex << fFirstBuffer[b][fReadHgcroc[b]][fReadWord[b]]
			    << std::dec << std::endl;
		}
		assert(fElink[fHgcrocToElink[h]].writeAndIncrementPtr(fFirstBuffer[b][fReadHgcrocNumber[b]][fReadWord[b]]));
	      }
	    }
	  }
	}
      }

      // Add zero padding word if odd
      //if((nWords%2)==1) assert(fElink[fHgcrocToElink[h]].writeAndIncrementPtr(0));
      
      uint64_t d;
      for(unsigned e(0);e<7;e++) {
	if(fElink[e].readAndIncrementPtr(d)) a[e]=(d&0xffffffff);
	else a[e]=0;

	if(fPrintLevel>4) {
	  std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
		    << "Sending eLink " << e << " = "
		    << std::hex << a[e]
		    << std::dec << std::endl;
	}
      }

#endif
      
    } else if(fDataFlowMethod==VariableHgcrocMap) {

      unsigned nWords(0);
      
      if(fPrintLevel>3) {
	std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
		  << "Data flow method = variable HGCROC map, reading "
		  << nWords << " words per BX"	<< std::endl;
      }
	    
      assert(false);

      
    } else if(fDataFlowMethod==EventBuild) {
      
      // 24 words per BX for 2 parallel buffers = 960 MHz
      // 12 words per BX for 3 parallel buffers = 480 MHz
      //  8 words per BX for 4 parallel buffers = 320 MHz
      //unsigned nWords(24/(NumberOfParallelBuffers-1));


      // For one block, must be > 55 words x 18 HGCROCs/44 BX = 22.5; also more than output = 7 words/BX
      //  OR
      // For one block, must be > 39 words x 18 HGCROCs/44 BX = 15.95; also more than output = 7 words/BX
      // For seven blocks, must be > 55 words x 3 HGCROCs/44 BX = 3.75; also more than output = 1 word/BX
      //  OR
      // For seven blocks, must be > 39 words x 3 HGCROCs/44 BX = 2.66; also more than output = 1 word/BX

      unsigned nWords(fEconArch.fNumberOfBlocks==1?24:4);
      //unsigned nWords(fEconArch.fNumberOfBlocks==1?16:3);
      
      if(fPrintLevel>3) {
	std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
		  << "Data flow method = event build, reading "
		  << nWords << " words per BX"	<< std::endl;
      }
	    
      for(unsigned block(0);block<fEconArch.fNumberOfBlocks;block++) {

	for(unsigned b(0);b<NumberOfParallelBuffers;b++) {
	  if(b!=(fActiveInputBuffer%NumberOfParallelBuffers)) {

	    if(fPrintLevel>4) {
	      std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
			<< "Reading HGCROC number " << fReadHgcrocNumber[b][block]
			<< " < " << fEconArch.fHgcrocNumber[block].size()
			<< ", word number " << fReadWord[b][block] << std::endl;
	    }
	    
	    //if(fReadHgcrocNumber[b]<fEconFile.fNumberOfHgcrocs) {
	    if(fReadHgcrocNumber[b][block]<fEconArch.fHgcrocNumber[block].size()) {

	      for(unsigned w(0);w<nWords;w++) {
		//assert(fReadHgcroc[b]<fEconFile.fNumberOfHgcrocs);
		
		unsigned readHgcroc(fEconArch.fHgcrocNumber[block][fReadHgcrocNumber[b][block]]);
		std::vector<uint32_t> &readBuffer(fFirstBuffer[b][readHgcroc]); // Convenient
		assert(fReadWord[b][block]<readBuffer.size());
	      
		if(fPrintLevel>4) {
		  std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
			    << "Copying BX word " << w << " from block " << block << ", first buffer " << b
			    << ", HGCROC " << readHgcroc << ", word " << fReadWord[b][block]
			    << " of " << readBuffer.size() << " = "
			    << std::hex << readBuffer[fReadWord[b][block]]
			    << std::dec << std::endl;
		}

		// Write word to FIFO
		
		assert(fEventBuffer[0][block].writeAndIncrementPtr(readBuffer[fReadWord[b][block]]));
		
		// Check if completed all words of this HGCROC
		
		fReadWord[b][block]++;
		if(fReadWord[b][block]==readBuffer.size()) {
		  fReadWord[b][block]=0;
		  fReadHgcrocNumber[b][block]++;
		  
		  // Check if completed all HGCROCs
		  
		  if(fReadHgcrocNumber[b][block]==fEconArch.fHgcrocNumber[block].size()) w=nWords;
		}
	      }
	    }
	  }
	}

	uint64_t d;
	for(unsigned e(0);e<fEconArch.fElinkNumber[block].size();e++) {
	  if(fEventBuffer[0][block].readAndIncrementPtr(d)) a[fEconArch.fElinkNumber[block][e]]=(d&0xffffffff);
	  else a[fEconArch.fElinkNumber[block][e]]=0;
	}
      }

      if(fPrintLevel>4) {
	for(unsigned e(0);e<7;e++) {
	  std::cout << "BeSlinkSim[" << fSlinkArch->slinkNumber() << "][" << fEcon << "]::processBx() "
		    << "Sending eLink " << e << " = "
		    << std::hex << a[e]
		    << std::dec << std::endl;
	}
      }
        
    } else {
      assert(false);
    }
  }

  unsigned numberOfSlinkWords() const {
    return fNumberOfSlinkWords;
  }
  
  const std::pair<uint128_t,bool>& slinkWord(unsigned n) const {
    assert(n<fNumberOfSlinkWords);
    return fSlinkWord[n];
  }

  unsigned econSlink() const {
    return fSlink;
  }

public:
  static unsigned fPrintLevel;

  static DataRandomMethod fDataRandomMethod;
  static DataFormatMethod fDataFormatMethod;
  static DataFlowMethod fDataFlowMethod;
  static unsigned fFormatBreakEven;

  double fTotalNum;
  double fTotalMean;
  double fTotalWords;

protected:
private:
  unsigned fSlink;
  const SlinkArch *fSlinkArch;

  unsigned fEcon;
  EconFile fEconFile;

  EconArch fEconArch;

  //unsigned fNumberOfHgcrocs;
  //double fHgcrocMean[18];
  
  unsigned fHgcrocToElink[18];
  CircularBuffer<1> fElink[7];
  CircularBuffer<16> fEventBuffer[Dimensions::MaxNumberOfEconsPerSlink][Dimensions::MaxNumberOfBlocksPerEcon];
  //PartitionedBuffer<7,16> fPartitionedBuffer[5];

  unsigned fNumberOfChannels[18];
  unsigned fNumberOfWords[18];

  bool fEventActive;
  unsigned fEconRead;
  unsigned fBlockRead;
  unsigned fArrayWrite;
  uint32_t fArrayWord[4];
  unsigned fNumberOfEventWords;

  BlockCheck fBlockCheck[Dimensions::MaxNumberOfEconsPerSlink][Dimensions::MaxNumberOfBlocksPerEcon];

  
  //unsigned fReadHgcroc[NumberOfParallelBuffers];
  //unsigned fReadWord[NumberOfParallelBuffers];
  unsigned fReadHgcrocNumber[NumberOfParallelBuffers][20];
  unsigned fReadWord[NumberOfParallelBuffers][20];
  unsigned fWriteElink;

  //unsigned fNumberOfBlocks;
  std::vector<unsigned> fHgcrocNumber[7];
  std::vector<unsigned> fElinkNumber[7];
  
  unsigned fActiveInputBuffer;
  std::vector<uint32_t> fFirstBuffer[NumberOfParallelBuffers][18];

  CircularBuffer<1> cbBoe;
  unsigned fNumberOfSlinkWords;
  std::pair<uint128_t,bool> fSlinkWord[3];
};

unsigned BeSlinkSim::fPrintLevel(1);

BeSlinkSim::DataRandomMethod BeSlinkSim::fDataRandomMethod(BeSlinkSim::Binomial);
BeSlinkSim::DataFormatMethod BeSlinkSim::fDataFormatMethod(BeSlinkSim::FixedChannelBitmap);
BeSlinkSim::DataFlowMethod BeSlinkSim::fDataFlowMethod(BeSlinkSim::FixedHgcrocMap);
unsigned BeSlinkSim::fFormatBreakEven(0);

#endif