/*
 * Copyright © 2008-2011 Dynare Team
 *
 * This file is part of Dynare.
 *
 * Dynare is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Dynare is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Dynare.  If not, see <https://www.gnu.org/licenses/>.
 */

/*************************************
 * This main() is for testing k_order DLL entry point by linking to
 * the k_ord library statically and passing its hard-coded data:
 * parameters, covar, ysteady and the variable names from fs2000a.mod model
 * The main has been derived from mxFunction used for K-Order DLL
 ***************************************/

//#include "stdafx.h"
#include "k_ord_dynare.h"
#include "dynamic_dll.h"

int
main(int argc, char *argv[])
{

  double qz_criterium = 1+1e-6;
  const int check_flag = 0;
  const char *fName = "./fs2000k"; //mxArrayToString(mFname);
  const char *dfExt = ".mexa64"; //Dynamic file extension, e.g.".dll";

#ifdef DEBUG
  mexPrintf("k_order_perturbation: check_flag = %d ,  fName = %s .\n", check_flag, fName);
#endif
  int kOrder = 2;
  int npar = 7; //(int)mxGetM(mxFldp);
  double dparams[7] = { 0.3300,
                        0.9900,
                        0.0030,
                        1.0110,
                        0.7000,
                        0.7870,
                        0.0200};
  Vector *modParams = new Vector(dparams, npar);

#ifdef DEBUG
  mexPrintf("k_ord_perturbation: nParams=%d .\n", npar);
  for (int i = 0; i < npar; i++)
    {
      mexPrintf("k_ord_perturbation: dParams[%d]= %g.\n", i, dparams+i*(sizeof(double)));
    }
  for (int i = 0; i < npar; i++)
    {
      mexPrintf("k_ord_perturbation: Params[%d]= %g.\n", i, (*modParams)[i]);
    }

#endif

  double d2Dparams[4] = { //(double *) mxGetData(mxFldp);
                         0.1960e-3, 0.0,
                         0.0, 0.0250e-3
  };
  npar = 2; //(int)mxGetN(mxFldp);
  TwoDMatrix *vCov = new TwoDMatrix(npar, npar, (d2Dparams));
  double dYSparams[16] = { // 27 mxGetData(mxFldp);
                          //	1.0110,  2.2582,  5.8012,  0.5808,
                          1.0110, 2.2582, 0.4477, 1.0000,
                          4.5959, 1.0212, 5.8012, 0.8494,
                          0.1872, 0.8604, 1.0030, 1.0080,
                          0.5808, 1.0030, 2.2582, 0.4477
                          //,  1.0110,  2.2582,  0.4477,  1.0000,	0.1872,  2.2582,  0.4477
  };
  const int nSteady = 16; //27 //31;//29, 16 (int)mxGetM(mxFldp);
  Vector *ySteady = new Vector(dYSparams, nSteady);

  double nnzd[3] = { 77, 217, 0};
  const Vector *NNZD = new Vector(nnzd, 3);

  //mxFldp = mxGetField(dr, 0,"nstatic" );
  const int nStat = 7; //(int)mxGetScalar(mxFldp);
  //	mxFldp = mxGetField(dr, 0,"npred" );
  const int nPred = 2; //6 - nBoth (int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(dr, 0,"nspred" );
  const int nsPred = 4; //(int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(dr, 0,"nboth" );
  const int nBoth = 2; // (int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(dr, 0,"nfwrd" );
  const int nForw = 5; // 3 (int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(dr, 0,"nsfwrd" );
  const int nsForw = 7; //(int)mxGetScalar(mxFldp);

  //mxFldp = mxGetField(M_, 0,"exo_nbr" );
  const int nExog = 2; // (int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(M_, 0,"endo_nbr" );
  const int nEndo = 16; //16(int)mxGetScalar(mxFldp);
  //mxFldp = mxGetField(M_, 0,"param_nbr" );
  const int nPar = 7; //(int)mxGetScalar(mxFldp);
  // it_ should be set to M_.maximum_lag
  //mxFldp = mxGetField(M_, 0,"maximum_lag" );
  const int nMax_lag = 1; //(int)mxGetScalar(mxFldp);

  int var_order[] //[18]
    = {
       5, 6, 8, 10, 11, 12, 14, 7, 13, 1, 2, 3, 4, 9, 15, 16
       //			 5,  6,  8, 10, 11, 12, 16,  7, 13, 14, 15,  1,  2,  3, 4,  9, 17, 18
  };
  //Vector * varOrder =  new Vector(var_order, nEndo);
  vector<int> *var_order_vp = new vector<int>(nEndo); //nEndo));
  for (int v = 0; v < nEndo; v++)
    (*var_order_vp)[v] = var_order[v];

  const double ll_incidence[] //[3][18]
    = {
       1, 5, 21,
       2, 6, 22,
       0, 7, 23,
       0, 8, 24,
       0, 9, 0,
       0, 10, 0,
       3, 11, 0,
       0, 12, 0,
       0, 13, 25,
       0, 14, 0,
       0, 15, 0,
       0, 16, 0,
       4, 17, 0,
       0, 18, 0,
       0, 19, 26,
       0, 20, 27
  };
  TwoDMatrix *llincidence = new TwoDMatrix(3, nEndo, ll_incidence);

  const int jcols = nExog+nEndo+nsPred+nsForw; // Num of Jacobian columns
#ifdef DEBUG
  mexPrintf("k_order_perturbation: jcols= %d .\n", jcols);
#endif
  //mxFldp= mxGetField(M_, 0,"endo_names" );
  const int nendo = 16; //16(int)mxGetM(mxFldp);
  const int widthEndo = 6; // (int)mxGetN(mxFldp);
  const char *cNamesCharStr = "mPceWRkdnlggydPc          yp A22          __              oo              bb              ss    ";
  //   const char**  endoNamesMX= DynareMxArrayToString( mxFldp,nendo,widthEndo);
  const char **endoNamesMX = DynareMxArrayToString(cNamesCharStr, nendo, widthEndo);
#ifdef DEBUG
  for (int i = 0; i < nEndo; i++)
    {
      mexPrintf("k_ord_perturbation: EndoNameList[%d][0]= %s.\n", i, endoNamesMX[i]);
    }
#endif
  //mxFldp      = mxGetField(M_, 0,"exo_names" );
  const int nexo = 2; //(int)mxGetM(mxFldp);
  const int widthExog = 3; //(int)mxGetN(mxFldp);
  //        const char**  exoNamesMX= DynareMxArrayToString( mxFldp,nexo,widthExog);
  const char *cExoNamesCharStr = "ee__am";
  const char **exoNamesMX = DynareMxArrayToString(cExoNamesCharStr, nexo, widthExog);
#ifdef DEBUG
  for (int i = 0; i < nexo; i++)
    {
      mexPrintf("k_ord_perturbation: ExoNameList[%d][0]= %s.\n", i, exoNamesMX[i]);
    }
#endif
  if ((nEndo != nendo) || (nExog != nexo)) //(nPar != npar)
    {
      mexPrintf("Incorrect number of input parameters.\n");
      return;
    }

#ifdef DEBUG
  for (int i = 0; i < nEndo; i++)
    {
      mexPrintf("k_ord_perturbation: EndoNameList[%d]= %s.\n", i, endoNamesMX[i]);
    }
  //	for (int i = 0; i < nPar; i++) {
  //, , mexPrintf("k_ord_perturbation: params_vec[%d]= %g.\n", i, params_vec[i] );   }
  for (int i = 0; i < nPar; i++)
    {
      mexPrintf("k_ord_perturbation: Params[%d]= %g.\n", i, (*modParams)[i]);
    }
  for (int i = 0; i < nSteady; i++)
    {
      mexPrintf("k_ord_perturbation: ysteady[%d]= %g.\n", i, (*ySteady)[i]);
    }

  mexPrintf("k_order_perturbation: nEndo = %d ,  nExo = %d .\n", nEndo, nExog);
#endif
  /* Fetch time index */
  //		int it_ = (int) mxGetScalar(prhs[3]) - 1;

  const int nSteps = 0; // Dynare++ solving steps, for time being default to 0 = deterministic steady state
  const double sstol = 1.e-13; //NL solver tolerance from

  THREAD_GROUP::max_parallel_threads = 1; //2 params.num_threads;

  try
    {
      // make journal name and journal
      std::string jName(fName); //params.basename);
      jName += ".jnl";
      Journal journal(jName.c_str());

#ifdef DEBUG
      mexPrintf("k_order_perturbation: Call tls init\n");
#endif

      tls.init(kOrder, (nStat+2*nPred+3*nBoth+2*nForw+nExog));

#ifdef DEBUG
      mexPrintf("k_order_perturbation: Calling dynamicDLL constructor.\n");
#endif
      //			DynamicFn * pDynamicFn = loadModelDynamicDLL (fname);
      DynamicModelDLL dynamicDLL(fName, nEndo, jcols, nMax_lag, nExog, dfExt);
#ifdef DEBUG
      mexPrintf("k_order_perturbation: Calling dynare constructor.\n");
#endif
      // make KordpDynare object
      KordpDynare dynare(endoNamesMX, nEndo, exoNamesMX, nExog, nPar, // paramNames,
                         ySteady, vCov, modParams, nStat, nPred, nForw, nBoth,
                         jcols, NNZD, nSteps, kOrder, journal, dynamicDLL, sstol, var_order_vp, //var_order
                         llincidence, qz_criterium);
#ifdef DEBUG
      mexPrintf("k_order_perturbation: Call Approximation constructor \n");
#endif
      Approximation app(dynare, journal, nSteps, false, qz_criterium);
      // run stochastic steady
#ifdef DEBUG
      mexPrintf("k_order_perturbation: Calling walkStochSteady.\n");
#endif
      app.walkStochSteady();

      // open mat file
      std::string matfile(fName); //(params.basename);
      matfile += ".mat";
      FILE *matfd = NULL;
      if (NULL == (matfd = fopen(matfile.c_str(), "wb")))
        {
          fprintf(stderr, "Couldn't open %s for writing.\n", matfile.c_str());
          exit(1);
        }

#ifdef DEBUG
      mexPrintf("k_order_perturbation: Filling Mat file outputs.\n");
#endif
      std::string ss_matrix_name(fName); //params.prefix);
      ss_matrix_name += "_steady_states";
      ConstTwoDMatrix(app.getSS()).writeMat4(matfd, ss_matrix_name.c_str());

      // write the folded decision rule to the Mat-4 file
      app.getFoldDecisionRule().writeMat4(matfd, fName); //params.prefix);

      fclose(matfd);

      map<string, ConstTwoDMatrix> mm;
      app.getFoldDecisionRule().writeMMap(mm, string());
#ifdef DEBUG
      app.getFoldDecisionRule().print();
      mexPrintf("k_order_perturbation: Map print: \n");
      for (map<string, ConstTwoDMatrix>::const_iterator cit = mm.begin();
           cit != mm.end(); ++cit)
        {
          mexPrintf("k_order_perturbation: Map print: string: %s , g:\n", (*cit).first.c_str());
          (*cit).second.print();
        }
#endif

      // get latest ysteady
      double *dYsteady = (dynare.getSteady().base());
      ySteady = (Vector *) (&dynare.getSteady());
    }
  catch (const KordException &e)
    {
      printf("Caugth Kord exception: ");
      e.print();
      return 1; // e.code();
    }
  catch (const TLException &e)
    {
      printf("Caugth TL exception: ");
      e.print();
      return 2; // 255;
    }
  catch (SylvException &e)
    {
      printf("Caught Sylv exception: ");
      e.printMessage();
      return 3; // 255;
    }
  catch (const DynareException &e)
    {
      printf("Caught KordpDynare exception: %s\n", e.message());
      return 4; // 255;
    }
  catch (const ogu::Exception &e)
    {
      printf("Caught ogu::Exception: ");
      e.print();
      return 5; // 255;
    }

  // bones for future developement of the Matlab output.
  const int nrhs = 5;
  const int nlhs = 2;

  mxArray *prhs[nrhs];
  mxArray *plhs[nlhs];

#ifdef DEBUG
  mexPrintf("k_order_perturbation: Filling MATLAB outputs.\n");
#endif

  double *dgy, *dgu, *ysteady;
  int nb_row_x;

  ysteady = NULL;
  if (nlhs >= 1)
    {
      /* Set the output pointer to the output matrix ysteady. */
      plhs[0] = mxCreateDoubleMatrix(nEndo, 1, mxREAL);
      /* Create a C pointer to a copy of the output ysteady. */
      ysteady = mxGetPr(plhs[0]);
    }

  dgy = NULL;
  if (nlhs >= 2)
    {
      /* Set the output pointer to the output matrix gy. */
      plhs[1] = mxCreateDoubleMatrix(nEndo, jcols, mxREAL);
      //				plhs[1] = (double*)(gy->getData())->base();
      /* Create a C pointer to a copy of the output matrix gy. */
      dgy = mxGetPr(plhs[1]);
    }

  dgu = NULL;
  if (nlhs >= 3)
    {
      /* Set the output pointer to the output matrix gu. */
      plhs[2] = mxCreateDoubleMatrix(nEndo, nExog, mxREAL);
      //				plhs[2] = (double*)((gu->getData())->base());
      /* Create a C pointer to a copy of the output matrix gu. */
      dgu = mxGetPr(plhs[2]);
    }

  return 0;
}