#include "ProblemInstat.h"
#include "FileWriter.h"
#include "AdaptStationary.h"
#include "AdaptInstationary.h"
#include "Estimator.h"
#include "ProblemScal.h"
#include "StandardProblemIteration.h"

namespace AMDiS {

  ProblemInstat::~ProblemInstat()
  {}

  void ProblemInstat::initialize(Flag initFlag,
				 ProblemInstat *adoptProblem/* = NULL*/,
				 Flag adoptFlag /* = INIT_NOTHING*/) 
  {}

  void ProblemInstat::solveInitialProblem(AdaptInfo *adaptInfo)
  {
    AdaptStationary initialAdapt((name + "->initial->adapt").c_str(),
				 new StandardProblemIteration(initialProblem),
				 adaptInfo);

    initialAdapt.adapt();
  }

  void ProblemInstatScal::transferInitialSolution(AdaptInfo *adaptInfo)
  {
    TEST_EXIT(adaptInfo->getTime() == adaptInfo->getStartTime())
      ("after initial solution: time != start time\n");
    problemStat->writeFiles(adaptInfo, true);
  }

  void ProblemInstatVec::transferInitialSolution(AdaptInfo *adaptInfo)
  {
    TEST_EXIT(adaptInfo->getTime() == adaptInfo->getStartTime())
      ("after initial solution: time != start time\n");
    problemStat->writeFiles(adaptInfo, true);
  }


  ProblemInstatScal::ProblemInstatScal(std::string sname, 
				       ProblemScal *prob, ProblemStatBase *initialProb)
    : ProblemInstat(sname, initialProb), 
      problemStat(prob),
      oldSolution(NULL)
  {}

  ProblemInstatScal::ProblemInstatScal(std::string sname, ProblemScal& prob)
    : ProblemInstat(sname, NULL), 
      problemStat(&prob),
      oldSolution(NULL)
  {}

  ProblemInstatScal::ProblemInstatScal(std::string sname, 
				       ProblemScal& prob, ProblemStatBase& initialProb)
    : ProblemInstat(sname, &initialProb), 
      problemStat(&prob),
      oldSolution(NULL)
  {}

  ProblemInstatScal::~ProblemInstatScal()
  {
    delete oldSolution;
  }

  void ProblemInstatScal::initialize(Flag initFlag,
				     ProblemInstat *adoptProblem,
				     Flag adoptFlag) 
  {
    FUNCNAME("ProblemInstat::initialize()");
  
    ProblemInstat::initialize(initFlag, adoptProblem, adoptFlag);

    // === create vector for old solution ===
    if (oldSolution) {
      WARNING("oldSolution already created\n");
    } else {
      if (initFlag.isSet(INIT_UH_OLD))
	createUhOld();
      
      if (adoptProblem && adoptFlag.isSet(INIT_UH_OLD)) {
	ProblemInstatScal* _adoptProblem 
	  = dynamic_cast<ProblemInstatScal*>(adoptProblem);
	TEST_EXIT(_adoptProblem)
	  ("can't adopt oldSolution from problem which is not instationary and scalar");
	TEST_EXIT(!oldSolution)("oldSolution already created");
	oldSolution = _adoptProblem->getOldSolution();
      }
    }

    if (!oldSolution) 
      WARNING("no oldSolution created\n");
  }

  void ProblemInstatScal::createUhOld() 
  {
    if (oldSolution) {
      WARNING("oldSolution already created\n");
    } else {
      // create oldSolution
      oldSolution = new DOFVector<double>(problemStat->getFESpace(), name + "->uOld");
      oldSolution->setCoarsenOperation(COARSE_INTERPOL);
      if (problemStat->getEstimator())
	dynamic_cast<Estimator*>(problemStat->getEstimator())
	  ->addUhOldToSystem(0, oldSolution);
    }
  }


  void ProblemInstatScal::closeTimestep(AdaptInfo *adaptInfo) 
  {
    bool force = (adaptInfo->getTime() >= adaptInfo->getEndTime());
    problemStat->writeFiles(adaptInfo, force);
  }

  void ProblemInstatVec::closeTimestep(AdaptInfo *adaptInfo) 
  {
    bool force = (adaptInfo->getTime() >= adaptInfo->getEndTime());
    problemStat->writeFiles(adaptInfo, force);
  }

  ProblemInstatVec::ProblemInstatVec(std::string sname, 
				     ProblemVec *prob, ProblemStatBase *initialProb)
    : ProblemInstat(sname, initialProb), 
      problemStat(prob),
      oldSolution(NULL)
  {}

  ProblemInstatVec::ProblemInstatVec(std::string sname, ProblemVec &prob)
    : ProblemInstat(sname, NULL), 
      problemStat(&prob),
      oldSolution(NULL)
  {}

  ProblemInstatVec::ProblemInstatVec(std::string sname, 
				     ProblemVec &prob, ProblemStatBase &initialProb)
    : ProblemInstat(sname, &initialProb), 
      problemStat(&prob),
      oldSolution(NULL)
  {}

  ProblemInstatVec::~ProblemInstatVec()
  {
    delete oldSolution;
  }

  void ProblemInstatVec::initialize(Flag initFlag, ProblemInstat *adoptProblem,
				    Flag adoptFlag) 
  {
    FUNCNAME("ProblemInstatVec::initialize()");
  
    ProblemInstat::initialize(initFlag, adoptProblem, adoptFlag);

    // === create vector for old solution ===
    if (oldSolution) {
      WARNING("oldSolution already created\n");
    } else {
      if (initFlag.isSet(INIT_UH_OLD))
	createUhOld();

      if (adoptProblem && adoptFlag.isSet(INIT_UH_OLD)) {
	ProblemInstatVec* _adoptProblem = dynamic_cast<ProblemInstatVec*>(adoptProblem);
	TEST_EXIT(_adoptProblem)
	  ("can't adopt oldSolution from problem which is not instationary and vectorial");
	TEST_EXIT(!oldSolution)("oldSolution already created");
	oldSolution = _adoptProblem->getOldSolution();
      }
    }

    if (!oldSolution) 
      WARNING("no oldSolution created\n");
  }

  void ProblemInstatVec::createUhOld() 
  {
    if (oldSolution) {
      WARNING("oldSolution already created\n");
    } else {
      int size = problemStat->getNumComponents();
      // create oldSolution
      oldSolution = new SystemVector("old solution", problemStat->getFESpaces(), size);
      for (int i = 0; i < size; i++) {
	oldSolution->setDOFVector(i, new DOFVector<double>(problemStat->getFESpace(i), 
							   name + "->uOld"));
	oldSolution->getDOFVector(i)->setCoarsenOperation(COARSE_INTERPOL);
      
	if (problemStat->getEstimator(i))
	  problemStat->getEstimator(i)->
	    addUhOldToSystem(i, oldSolution->getDOFVector(i));
      }
    }
  }

  void ProblemInstatScal::initTimestep(AdaptInfo *adaptInfo) 
  {
    oldSolution->copy(*(problemStat->getSolution())); 
  }

  void ProblemInstatVec::initTimestep(AdaptInfo *adaptInfo) 
  {
    oldSolution->copy(*(problemStat->getSolution())); 
  }

}