// File:        TDocStd_Application.cxx
// Created:     Wed Jun 30 12:40:45 1999
// Author:      Denis PASCAL
//              <dp@dingox.paris1.matra-dtv.fr>


#include <TDocStd_Application.ixx>

#include <CDF_Session.hxx>
#include <CDF_DirectoryIterator.hxx>
#include <CDF_Directory.hxx>

#include <Standard_ErrorHandler.hxx>
#include <Standard_NotImplemented.hxx>
#include <Standard_DomainError.hxx>
#include <Plugin_Failure.hxx>
#include <TDF_Label.hxx>
#include <CDF_Store.hxx>
#include <TDocStd_PathParser.hxx>

#include <CDM_MessageDriver.hxx>

// The improvement concerns returning value of the methods Open(), Save() and SaveAs():
#define BUC60867

// TDocStd_Owner attribute have pointer of closed TDocStd_Document
#define OCC159

#ifdef OCC159
#include <TDocStd_Owner.hxx>
#endif

//=======================================================================
//function : TDocStd_Application
//purpose  :
//=======================================================================

TDocStd_Application::TDocStd_Application()
     : myIsDriverLoaded (Standard_True)
{
  Handle(CDF_Session) S;
  if (!CDF_Session::Exists()) S = new CDF_Session();
  else S = CDF_Session::CurrentSession();
  S->SetCurrentApplication(this);
  try
  {
    OCC_CATCH_SIGNALS
    S->LoadDriver();
  }
  catch (Plugin_Failure)
  {
    myIsDriverLoaded = Standard_False;
  }
}


//=======================================================================
//function : IsDriverLoaded
//purpose  :
//=======================================================================
Standard_Boolean TDocStd_Application::IsDriverLoaded() const
{
  return myIsDriverLoaded;
}

//=======================================================================
//function : Resources
//purpose  :
//=======================================================================

Handle(Resource_Manager)  TDocStd_Application::Resources()  {
  if (myResources.IsNull()) {
    myResources = new Resource_Manager(ResourcesName());
  }
  return myResources;
}


//=======================================================================
//function : NbDocuments
//purpose  :
//=======================================================================

Standard_Integer TDocStd_Application::NbDocuments() const
{
  if (!CDF_Session::Exists())
    Standard_DomainError::Raise("TDocStd_Application::NbDocuments");
  Handle(CDF_Session) S = CDF_Session::CurrentSession();
  return S->Directory()->Length();
}

//=======================================================================
//function : GetDocument
//purpose  :
//=======================================================================

void TDocStd_Application::GetDocument(const Standard_Integer index,Handle(TDocStd_Document)& aDoc) const
{
  if (!CDF_Session::Exists())
    Standard_DomainError::Raise("TDocStd_Application::NbDocuments");
  Handle(CDF_Session) S = CDF_Session::CurrentSession();
  CDF_DirectoryIterator it (S->Directory());
  Standard_Integer current = 0;
  for (;it.MoreDocument();it.NextDocument()) {
    current++;
    if (index == current) {
      Handle(TDocStd_Document) D =
        Handle(TDocStd_Document)::DownCast(it.Document());
      aDoc = D;
      return;
    }
  }
}

//=======================================================================
//function : NewDocument
//purpose  :
//=======================================================================

void TDocStd_Application::NewDocument(const TCollection_ExtendedString& format,Handle(TDocStd_Document)& aDoc)
{
  Handle(TDocStd_Document) D = new TDocStd_Document(format);
  InitDocument (D);
  CDF_Application::Open(D); // add the document in the session
  aDoc = D;
}

//=======================================================================
//function : InitDocument
//purpose  : do nothing
//=======================================================================

void TDocStd_Application::InitDocument(const Handle(TDocStd_Document)& /*aDoc*/) const
{
}

#ifdef OCC159
//=======================================================================
//function : Close
//purpose  :
//=======================================================================

void TDocStd_Application::Close(const Handle(TDocStd_Document)& aDoc)
{
  Handle(TDocStd_Owner) Owner;
  if (aDoc->Main().Root().FindAttribute(TDocStd_Owner::GetID(),Owner)) {
    Handle(TDocStd_Document) emptyDoc;
    Owner->SetDocument(emptyDoc);
  }
  CDF_Application::Close(aDoc);
}
#endif

//=======================================================================
//function : IsInSession
//purpose  :
//=======================================================================

Standard_Integer TDocStd_Application::IsInSession (const TCollection_ExtendedString& path) const
{
  Standard_Integer nbdoc = NbDocuments();
  Handle(TDocStd_Document) D;
  for (Standard_Integer i = 1; i <= nbdoc; i++) {
    GetDocument(i,D);
    if (D->IsSaved()) {
      if (path == D->GetPath()) return i;
    }
  }
  return 0;
}

//=======================================================================
//function : Open
//purpose  :
//=======================================================================

PCDM_ReaderStatus TDocStd_Application::Open(const TCollection_ExtendedString& path,Handle(TDocStd_Document)& aDoc) {
  PCDM_ReaderStatus status = PCDM_RS_DriverFailure;
  TDocStd_PathParser tool (path);
  TCollection_ExtendedString directory = tool.Trek();
  TCollection_ExtendedString file = tool.Name();
  file+=".";
  file+=tool.Extension();
#ifdef BUC60867
  status = CanRetrieve(directory,file);
  if (status != PCDM_RS_OK) return status;
#endif
  try {
    OCC_CATCH_SIGNALS
    Handle(TDocStd_Document) D =
      Handle(TDocStd_Document)::DownCast(Retrieve(directory,file));
    CDF_Application::Open(D);
    aDoc = D;
  }
  catch (Standard_Failure) {
//    status = GetRetrieveStatus();
    Handle(Standard_Failure) F = Standard_Failure::Caught();
    if (!F.IsNull() && !MessageDriver().IsNull()) {
//      Standard_SStream aMsg;
//      aMsg << Standard_Failure::Caught() << endl;
//      cout << "TDocStd_Application::Open(): " << aMsg.rdbuf()->str() << endl;
      TCollection_ExtendedString aString (F->GetMessageString());
      MessageDriver()->Write(aString.ToExtString());
    }
  }
  status = GetRetrieveStatus();
#ifdef DEB
  cout<<"TDocStd_Application::Open(): The status = "<<status<<endl;
#endif
  return status;
}

//=======================================================================
//function : SaveAs
//purpose  :
//=======================================================================

PCDM_StoreStatus TDocStd_Application::SaveAs(const Handle(TDocStd_Document)& D,const TCollection_ExtendedString& path) {
  TDocStd_PathParser tool (path);
  TCollection_ExtendedString directory = tool.Trek();
  TCollection_ExtendedString file = tool.Name();
  file+=".";
  file+=tool.Extension();
  D->Open(this);
  CDF_Store storer (D);
#ifdef BUC60867
  if (!storer.SetFolder(directory))
  {
    TCollection_ExtendedString aMsg ("TDocStd_Application::SaveAs() - folder ");
    aMsg += directory;
    aMsg += " does not exist";
    if(!MessageDriver().IsNull())
      MessageDriver()->Write(aMsg.ToExtString());
    return storer.StoreStatus(); //CDF_SS_Failure;
  }
#endif
  storer.SetName (file);
  try {
    OCC_CATCH_SIGNALS
    storer.Realize();
  }
  catch (Standard_Failure) {
    Handle(Standard_Failure) F = Standard_Failure::Caught();
    if (!F.IsNull() && !MessageDriver().IsNull()) {
      TCollection_ExtendedString aString (F->GetMessageString());
      MessageDriver()->Write(aString.ToExtString());
    }
  }
  if(storer.StoreStatus() == PCDM_SS_OK)
    D->SetSaved();
#ifdef BUC60867
#ifdef DEB
  cout<<"TDocStd_Application::SaveAs(): The status = "<<storer.StoreStatus()<<endl;
#endif
  return storer.StoreStatus();
#endif
}

//=======================================================================
//function : Save
//purpose  :
//=======================================================================

PCDM_StoreStatus TDocStd_Application::Save (const Handle(TDocStd_Document)& D) {
#ifdef BUC60867
  PCDM_StoreStatus status = PCDM_SS_OK;
#endif
  if (D->IsSaved()) {
    CDF_Store storer (D);
    try{
      OCC_CATCH_SIGNALS
      storer.Realize();
    }
    catch (Standard_Failure) {
      Handle(Standard_Failure) F = Standard_Failure::Caught();
      if (!F.IsNull() && !MessageDriver().IsNull()) {
        TCollection_ExtendedString aString (F->GetMessageString());
        MessageDriver()->Write(aString.ToExtString());
      }
    }
    if(storer.StoreStatus() == PCDM_SS_OK)
      D->SetSaved();
#ifdef BUC60867
    status = storer.StoreStatus();
#endif
  } else {
    if(!MessageDriver().IsNull()) {
      TCollection_ExtendedString aMsg("Document has not been saved yet");
      MessageDriver()->Write(aMsg.ToExtString());
    }
    status = PCDM_SS_Failure;
  }
#ifdef BUC60867
#ifdef DEB
  cout<<"TDocStd_Application::Save(): The status = "<<status<<endl;
#endif
  return status;
#endif
}

//=======================================================================
//function : SetViewer
//purpose  :
//=======================================================================

// void TDocStd_Application::SetViewer(const Handle(TDocStd_Document)& D,
//                                  const Handle(V3d_Viewer)& viewer)
// {
//   TPrsStd_AISViewer::New (D->Main(),viewer);
//   InitViewer(D);
// }


//=======================================================================
//function : SetViewer
//purpose  :
//=======================================================================

// void TDocStd_Application::SetViewer(const Handle(TDocStd_Document)& D,
//                                  const Handle(AIS_InteractiveContext)& IC)
// {
//   TPrsStd_AISViewer::New (D->Main(),IC);
//   InitViewer(D);
// }


//=======================================================================
//function : SaveAs
//purpose  : 
//=======================================================================

PCDM_StoreStatus TDocStd_Application::SaveAs(const Handle(TDocStd_Document)& D,
					      const TCollection_ExtendedString& path,
					      TCollection_ExtendedString& theStatusMessage) 
{ 
  TDocStd_PathParser tool (path);
  PCDM_StoreStatus aStatus = PCDM_SS_Failure;
  TCollection_ExtendedString directory = tool.Trek();   
  TCollection_ExtendedString file = tool.Name();   
  file+=".";   
  file+=tool.Extension();
  D->Open(this);
  CDF_Store storer (D);  
  if (storer.SetFolder(directory)) {
    storer.SetName (file);
    try {
      OCC_CATCH_SIGNALS
      storer.Realize();
    }
    catch (Standard_Failure) {
      Handle(Standard_Failure) F = Standard_Failure::Caught();
      if (!F.IsNull() && !MessageDriver().IsNull()) {
        TCollection_ExtendedString aString (F->GetMessageString());
        MessageDriver()->Write(aString.ToExtString());
      }
    }
    if(storer.StoreStatus() == PCDM_SS_OK)
      D->SetSaved();
    theStatusMessage = storer.AssociatedStatusText();
    aStatus = storer.StoreStatus();
  } else {
    theStatusMessage =
      TCollection_ExtendedString("TDocStd_Application::SaveAs"
                                 ": No such directory ") + directory;
    aStatus = PCDM_SS_Failure;
  }
  return aStatus;
}

//=======================================================================
//function : Save
//purpose  : 
//=======================================================================

PCDM_StoreStatus TDocStd_Application::Save (const Handle(TDocStd_Document)& D,
					   TCollection_ExtendedString& theStatusMessage)
{  
  PCDM_StoreStatus status = PCDM_SS_OK;
  if (D->IsSaved()) {  
    CDF_Store storer (D);  
    try {
      OCC_CATCH_SIGNALS
      storer.Realize(); 
    }
    catch (Standard_Failure) {
      Handle(Standard_Failure) F = Standard_Failure::Caught();
      if (!F.IsNull() && !MessageDriver().IsNull()) {
        TCollection_ExtendedString aString (F->GetMessageString());
        MessageDriver()->Write(aString.ToExtString());
      }
    }
    if(storer.StoreStatus() == PCDM_SS_OK)
      D->SetSaved();
    status = storer.StoreStatus();
    theStatusMessage = storer.AssociatedStatusText();
  } else {
    theStatusMessage = "TDocStd_Application::the document has not been saved yet";
    status = PCDM_SS_Failure;
  }
  return status;
}


//=======================================================================
//function : OnOpenTransaction
//purpose  : 
//=======================================================================

void TDocStd_Application::OnOpenTransaction (const Handle(TDocStd_Document)&)
{
  // nothing to do on this level
}

//=======================================================================
//function : OnAbortTransaction
//purpose  : 
//=======================================================================

void TDocStd_Application::OnAbortTransaction (const Handle(TDocStd_Document)&)
{
  // nothing to do on this level
}

//=======================================================================
//function : OnCommitTransaction
//purpose  : 
//=======================================================================

void TDocStd_Application::OnCommitTransaction (const Handle(TDocStd_Document)&)
{
  // nothing to do on this level
}