// Copyright (c) 2021 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 <RWMesh.hxx>

#include <TDataStd_Name.hxx>
#include <TDF_Tool.hxx>

// ================================================================
// Function : ReadNameAttribute
// Purpose  :
// ================================================================
TCollection_AsciiString RWMesh::ReadNameAttribute (const TDF_Label& theLabel)
{
  Handle(TDataStd_Name) aNodeName;
  return theLabel.FindAttribute (TDataStd_Name::GetID(), aNodeName)
       ? TCollection_AsciiString (aNodeName->Get())
       : TCollection_AsciiString();
}

// ================================================================
// Function : FormatName
// Purpose  :
// ================================================================
TCollection_AsciiString RWMesh::FormatName (RWMesh_NameFormat theFormat,
                                            const TDF_Label& theLabel,
                                            const TDF_Label& theRefLabel)
{
  switch (theFormat)
  {
    case RWMesh_NameFormat_Empty:
    {
      return TCollection_AsciiString();
    }
    case RWMesh_NameFormat_Product:
    {
      Handle(TDataStd_Name) aRefNodeName;
      return theRefLabel.FindAttribute (TDataStd_Name::GetID(), aRefNodeName)
           ? TCollection_AsciiString (aRefNodeName->Get())
           : TCollection_AsciiString();
    }
    case RWMesh_NameFormat_Instance:
    {
      Handle(TDataStd_Name) aNodeName;
      return theLabel.FindAttribute (TDataStd_Name::GetID(), aNodeName)
           ? TCollection_AsciiString (aNodeName->Get())
           : TCollection_AsciiString();
    }
    case RWMesh_NameFormat_InstanceOrProduct:
    {
      Handle(TDataStd_Name) aNodeName;
      if (theLabel.FindAttribute (TDataStd_Name::GetID(), aNodeName)
      && !aNodeName->Get().IsEmpty())
      {
        return TCollection_AsciiString (aNodeName->Get());
      }

      Handle(TDataStd_Name) aRefNodeName;
      return theRefLabel.FindAttribute (TDataStd_Name::GetID(), aRefNodeName)
           ? TCollection_AsciiString (aRefNodeName->Get())
           : TCollection_AsciiString();
    }
    case RWMesh_NameFormat_ProductOrInstance:
    {
      Handle(TDataStd_Name) aRefNodeName;
      if (theRefLabel.FindAttribute (TDataStd_Name::GetID(), aRefNodeName)
      && !aRefNodeName->Get().IsEmpty())
      {
        return TCollection_AsciiString (aRefNodeName->Get());
      }

      Handle(TDataStd_Name) aNodeName;
      return theLabel.FindAttribute (TDataStd_Name::GetID(), aNodeName)
           ? TCollection_AsciiString (aNodeName->Get())
           : TCollection_AsciiString();
    }
    case RWMesh_NameFormat_ProductAndInstance:
    {
      const TCollection_AsciiString anInstName = ReadNameAttribute (theLabel);
      const TCollection_AsciiString aProdName  = ReadNameAttribute (theRefLabel);
      return !anInstName.IsEmpty()
           && aProdName != anInstName
            ? aProdName + " [" + anInstName + "]"
            : (!aProdName.IsEmpty()
              ? aProdName
              : TCollection_AsciiString(""));
    }
    case RWMesh_NameFormat_ProductAndInstanceAndOcaf:
    {
      const TCollection_AsciiString anInstName = ReadNameAttribute (theLabel);
      const TCollection_AsciiString aProdName  = ReadNameAttribute (theRefLabel);
      TCollection_AsciiString anEntryId;
      TDF_Tool::Entry (theLabel, anEntryId);
      return !anInstName.IsEmpty()
           && aProdName != anInstName
            ? aProdName + " [" + anInstName + "]" + " [" + anEntryId + "]"
            : aProdName + " [" + anEntryId + "]";
    }
  }

  return TCollection_AsciiString();
}