#pragma once
#include "DataAdapters/gridfile.h"
#include "mdatetime.h"
#include "simple2ddata.h"

using michlib::MDateTime;

class GRIDVELData
{
 michlib::GridFile u,v;
 MString unit;
 real fill;

 using IType=decltype(u.Nx());

 public:
 static constexpr const char* name = "GRIDVEL";

 static constexpr const char* disabledactions = "genintfile";

 using Data = Simple2DData;

 GRIDVELData() = default;

 MString Info() const;
 // TODO: RetVal
 MString Open(const CLArgs& args);

 bool isOk() const { return u.Opened() &&v.Opened(); }

 size_t NTimes() const { return 1; }

 MDateTime Time(size_t i) const
 {
  return MDateTime();
 }

 //time_t Timestep() const { return isOk() ? (times[1] - times[0]) : 0; }

 explicit operator bool() const { return u.Opened() &&v.Opened(); }

 VarPresence CheckVar(const MString& vname) const
 {
  if(vname == "u" || vname == "v") return VarPresence::INTERNAL;
  if(vname == "U" || vname == "U2") return VarPresence::DERIVED;
  return VarPresence::NONE;
 }

 bool Read(const MString& vname, std::map<MString, Data>& cache, size_t i) const;
};