#ifndef _PUFFERFISH_INDEX_HPP_
#define _PUFFERFISH_INDEX_HPP_

#include <vector>

#include "cereal/archives/json.hpp"
#include "core/range.hpp"

#include "BooPHF.hpp"
#include "CanonicalKmer.hpp"
#include "CanonicalKmerIterator.hpp"
#include "Util.hpp"
#include "PufferfishBaseIndex.hpp"
#include "compact_vector/compact_vector.hpp"
#include "rank9sel.hpp"

class PufferfishIndex : public PufferfishBaseIndex<PufferfishIndex> {
  friend PufferfishBaseIndex;
  using hasher_t = pufferfish::types::hasher_t;
  using boophf_t = pufferfish::types::boophf_t;
  using pos_vector_t = PufferfishBaseIndex<PufferfishIndex>::pos_vector_t;
  using seq_vector_t = PufferfishBaseIndex<PufferfishIndex>::seq_vector_t;
  using edge_vector_t = PufferfishBaseIndex<PufferfishIndex>::edge_vector_t;
  using bit_vector_t = PufferfishBaseIndex<PufferfishIndex>::bit_vector_t;


private:
  uint32_t k_{0};
  uint32_t twok_{0};
  uint64_t numKmers_{0};
  bool haveEdges_{false};
  bool haveRefSeq_{false};
  bool haveEqClasses_{true};
  
  std::vector<uint32_t> eqClassIDs_;
  std::vector<std::vector<uint32_t>> eqLabels_;
  std::vector<std::string> refNames_;
  std::vector<uint32_t> refLengths_;
  std::vector<uint32_t> completeRefLengths_;
  std::vector<uint32_t> refExt_;
  std::vector<pufferfish::util::Position> contigTable_;
  compact::vector<uint64_t> contigOffsets_{16};

  uint64_t numContigs_{0};
  bit_vector_t  contigBoundary_;
  rank9sel rankSelDict;
  //std::unique_ptr<rank9sel> rankSelDict{nullptr};
  seq_vector_t seq_;
  edge_vector_t edge_;
  pos_vector_t pos_{16};

  std::unique_ptr<boophf_t> hash_{nullptr};
  boophf_t* hash_raw_{nullptr};
  size_t lastSeqPos_{std::numeric_limits<size_t>::max()};
  uint64_t numDecoys_{0};
  uint64_t firstDecoyIndex_{0};
  uint64_t firstDecoyEncodedIndex_{0};

public:
  PufferfishIndex();
  PufferfishIndex(const std::string& indexPath, pufferfish::util::IndexLoadingOpts opts = pufferfish::util::IndexLoadingOpts());
  ~PufferfishIndex();
 
  compact::vector<uint64_t, 2> refseq_;
  std::vector<uint64_t> refAccumLengths_;

  // Returns a ProjectedHits object that contains all of the
  // projected reference hits for the given kmer.
  auto getRefPos(CanonicalKmer& mer) -> pufferfish::util::ProjectedHits;
  // Returns a ProjectedHits object that contains all of the
  // projected reference hits for the given kmer.  Uses the results
  // of the previous contig info (start, end) from qc if the same
  // contig contains the match.  For correlated searches (e.g., from a read)
  // this can considerably speed up querying.
  auto getRefPos(CanonicalKmer& mer, pufferfish::util::QueryCache& qc) -> pufferfish::util::ProjectedHits;
};

#endif // _PUFFERFISH_INDEX_HPP_