#ifndef _BLASR_POS_HPP_
#define _BLASR_POS_HPP_

#include <fstream>
#include <vector>

#include <pbdata/Types.h>
#include <alignment/bwt/PackedHash.hpp>
#include <pbdata/DNASequence.hpp>
#include <pbdata/utils/BitUtils.hpp>

template <typename T_BWT_Sequence>
class Pos
{
public:
    static const unsigned int stride = 8;
    PackedHash packedHash;
    std::vector<int> hashCount;
    std::vector<int> fullPos;
    int hasDebugInformation;
    void Write(std::ostream &out) { packedHash.Write(out); }

    void Read(std::istream &in) { packedHash.Read(in); }

    void InitializeFromSuffixArray(DNALength suffixArray[], DNALength suffixArrayLength)
    {
        DNALength p;
        packedHash.Allocate(suffixArrayLength);
        std::fill(hashCount.begin(), hashCount.end(), 0);
        for (p = 0; p < suffixArrayLength; p++) {
            if (suffixArray[p] % stride == 0) {
                packedHash.AddValue(p, suffixArray[p]);
            }
        }
    }

    int Lookup(DNALength bwtPos, DNALength &seqPos)
    {
        return packedHash.LookupValue(bwtPos - 1, seqPos);
    }
};

#endif  // _BLASR_POS_HPP_