// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <Interface_EntityIterator.hxx>
#include <MoniTool_Macros.hxx>
#include <Interface_Protocol.hxx>
#include <Standard_Transient.hxx>
#include <NCollection_Sequence.hxx>
#include <NCollection_HSequence.hxx>
#include <Transfer_FinderProcess.hxx>
#include <Transfer_IteratorOfProcessForFinder.hxx>
#include <Transfer_IteratorOfProcessForTransient.hxx>
#include <Transfer_MultipleBinder.hxx>
#include <Transfer_SimpleBinderOfTransient.hxx>
#include <Transfer_TransferFailure.hxx>
#include <Transfer_TransferInput.hxx>
#include <Transfer_TransferIterator.hxx>
#include <Transfer_TransientProcess.hxx>
#include <Transfer_VoidBinder.hxx>

Transfer_TransferInput::Transfer_TransferInput() = default;

//  Results : For the Model ...

Interface_EntityIterator Transfer_TransferInput::Entities(Transfer_TransferIterator& list) const
{
  Interface_EntityIterator iter;
  for (list.Start(); list.More(); list.Next())
  {
    const occ::handle<Transfer_Binder>& binder = list.Value();
    if (binder.IsNull())
    {
      continue;
    }
    if (binder->IsKind(STANDARD_TYPE(Transfer_VoidBinder)))
    {
      continue;
    }

    // True result : must be transient (simple or list)
    DeclareAndCast(Transfer_SimpleBinderOfTransient, transb, binder);
    DeclareAndCast(Transfer_MultipleBinder, multi, binder);
    if (!transb.IsNull())
    {
      if (transb->HasResult())
      {
        iter.AddItem(transb->Result());
      }
    }
    else if (!multi.IsNull())
    {
      occ::handle<NCollection_HSequence<occ::handle<Standard_Transient>>> mulres =
        multi->MultipleResult();
      int nbres = 0;
      if (!mulres.IsNull())
      {
        nbres = mulres->Length();
      }
      for (int i = 1; i <= nbres; i++)
      {
        iter.AddItem(mulres->Value(i));
      }
    }
    else
    {
      throw Transfer_TransferFailure(
        "TransferInput : Entities, one of the Results is not Transient Handle");
    }
  }
  return iter;
}

void Transfer_TransferInput::FillModel(const occ::handle<Transfer_TransientProcess>& proc,
                                       const occ::handle<Interface_InterfaceModel>&  amodel) const
{
  Transfer_TransferIterator list = proc->CompleteResult();
  Interface_EntityIterator  iter = Entities(list);
  amodel->GetFromTransfer(iter);
}

void Transfer_TransferInput::FillModel(const occ::handle<Transfer_TransientProcess>& proc,
                                       const occ::handle<Interface_InterfaceModel>&  amodel,
                                       const occ::handle<Interface_Protocol>&        proto,
                                       const bool                                    roots) const
{
  Transfer_TransferIterator list;
  if (roots)
  {
    list = proc->RootResult();
  }
  else
  {
    list = proc->CompleteResult();
  }
  Interface_EntityIterator iter = Entities(list);
  for (iter.Start(); iter.More(); iter.Next())
  {
    amodel->AddWithRefs(iter.Value(), proto);
  }
}

void Transfer_TransferInput::FillModel(const occ::handle<Transfer_FinderProcess>&   proc,
                                       const occ::handle<Interface_InterfaceModel>& amodel) const
{
  Transfer_TransferIterator list = proc->CompleteResult();
  Interface_EntityIterator  iter = Entities(list);
  amodel->GetFromTransfer(iter);
}

void Transfer_TransferInput::FillModel(const occ::handle<Transfer_FinderProcess>&   proc,
                                       const occ::handle<Interface_InterfaceModel>& amodel,
                                       const occ::handle<Interface_Protocol>&       proto,
                                       const bool                                   roots) const
{
  Transfer_TransferIterator list;
  if (roots)
  {
    list = proc->RootResult();
  }
  else
  {
    list = proc->CompleteResult();
  }
  Interface_EntityIterator iter = Entities(list);
  for (iter.Start(); iter.More(); iter.Next())
  {
    amodel->AddWithRefs(iter.Value(), proto);
  }
}
