// 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_InterfaceError.hxx>
#include <Interface_InterfaceModel.hxx>
#include <MoniTool_Macros.hxx>
#include <Standard_Transient.hxx>
#include <Standard_Type.hxx>
#include <StepData_Protocol.hxx>
#include <StepData_ReadWriteModule.hxx>
#include <StepData_UndefinedEntity.hxx>
#include <StepSelect_StepType.hxx>
#include <TCollection_AsciiString.hxx>
#include <NCollection_Sequence.hxx>

IMPLEMENT_STANDARD_RTTIEXT(StepSelect_StepType, IFSelect_Signature)

StepSelect_StepType::StepSelect_StepType()
    : IFSelect_Signature("Step Type")
{
}

void StepSelect_StepType::SetProtocol(const occ::handle<Interface_Protocol>& proto)
{
  DeclareAndCast(StepData_Protocol, newproto, proto);
  if (newproto.IsNull())
  {
    throw Interface_InterfaceError("StepSelect_StepType");
  }
  theproto = newproto;
  thelib.Clear();
  thelib.AddProtocol(theproto);
  thename.Clear();
  thename.AssignCat("Step Type (Schema ");
  thename.AssignCat(theproto->SchemaName(nullptr));
  thename.AssignCat(")");
}

const char* StepSelect_StepType::Value(const occ::handle<Standard_Transient>&       ent,
                                       const occ::handle<Interface_InterfaceModel>& model) const
{
  std::lock_guard<std::mutex> aLock(myMutex);

  occ::handle<StepData_ReadWriteModule> aModule;
  int                                   aCN;
  if (!thelib.Select(ent, aModule, aCN))
  {
    // Build error message for unrecognized entity
    theLastValue = "..NOT FROM SCHEMA ";
    theLastValue += theproto->SchemaName(model);
    theLastValue += "..";
    return theLastValue.ToCString();
  }

  // Handle simple (non-complex) type - return direct reference from module
  if (!aModule->IsComplex(aCN))
  {
    return aModule->StepType(aCN).data();
  }

  // Handle complex type from module
  NCollection_Sequence<TCollection_AsciiString> aList;
  if (aModule->ComplexType(aCN, aList))
  {
    int aNb = aList.Length();
    if (aNb == 0)
    {
      theLastValue = "(..COMPLEX TYPE..)";
    }
    else
    {
      theLastValue = "(";
      for (int i = 1; i <= aNb; i++)
      {
        if (i > 1)
        {
          theLastValue += ",";
        }
        theLastValue += aList.Value(i);
      }
      theLastValue += ")";
    }
    return theLastValue.ToCString();
  }

  // Fallback: check for undefined entity
  DeclareAndCast(StepData_UndefinedEntity, anUnd, ent);
  if (anUnd.IsNull())
  {
    theLastValue.Clear();
    return theLastValue.ToCString();
  }

  if (!anUnd->IsComplex())
  {
    return anUnd->StepType(); // Direct return from entity's internal storage
  }

  // Build complex type from undefined entity
  theLastValue = "(";
  bool isFirst = true;
  while (!anUnd.IsNull())
  {
    if (!isFirst)
    {
      theLastValue += ",";
    }
    theLastValue += anUnd->StepType();
    anUnd   = anUnd->Next();
    isFirst = false;
  }
  theLastValue += ")";

  return theLastValue.ToCString();
}
