#include <cpPlugins/Parameters.h>
#include <tinyxml/tinyxml2.h>

// -------------------------------------------------------------------------
cpPlugins::Parameters::
Parameters( )
{
  this->Clear( );
}

// -------------------------------------------------------------------------
cpPlugins::Parameters::
~Parameters( )
{
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
Modified( ) const
{
  this->m_TimeStamp.Modified( );
}

// -------------------------------------------------------------------------
itk::ModifiedTimeType cpPlugins::Parameters::
GetMTime( ) const
{
  return( this->m_TimeStamp.GetMTime( ) );
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
Clear( )
{
  this->m_Parameters.clear( );
  this->Modified( );
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
GetNames( std::vector< std::string >& container ) const
{
  container.clear( );
  TParameters::const_iterator i = this->m_Parameters.begin( );
  for( ; i != this->m_Parameters.end( ); ++i )
    container.push_back( i->first );
}

// -------------------------------------------------------------------------
cpPlugins::Parameters::
Type cpPlugins::Parameters::
GetType( const std::string& name ) const
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
    return( i->second.first );
  else
    return( Self::NoType );
}

// -------------------------------------------------------------------------
#define cpPlugins_Parameters_TypeAsString( Y )  \
  if( i->second.first == Self::Y )              \
    return( #Y )

std::string cpPlugins::Parameters::
GetTypeAsString( const std::string& name ) const
{
  auto i = this->m_Parameters.find( name );
  cpPlugins_Parameters_TypeAsString( String );
  else cpPlugins_Parameters_TypeAsString( Bool );
  else cpPlugins_Parameters_TypeAsString( Int );
  else cpPlugins_Parameters_TypeAsString( Uint );
  else cpPlugins_Parameters_TypeAsString( Real );
  else cpPlugins_Parameters_TypeAsString( OpenFileName );
  else cpPlugins_Parameters_TypeAsString( SaveFileName );
  else cpPlugins_Parameters_TypeAsString( PathName );
  else cpPlugins_Parameters_TypeAsString( StringList );
  else cpPlugins_Parameters_TypeAsString( BoolList );
  else cpPlugins_Parameters_TypeAsString( IntList );
  else cpPlugins_Parameters_TypeAsString( UintList );
  else cpPlugins_Parameters_TypeAsString( RealList );
  else cpPlugins_Parameters_TypeAsString( OpenFileNameList );
  else cpPlugins_Parameters_TypeAsString( SaveFileNameList );
  else cpPlugins_Parameters_TypeAsString( PathNameList );
  else cpPlugins_Parameters_TypeAsString( Choices );
  else return( "NoType" );
}

// -------------------------------------------------------------------------
#define cpPlugins_Parameters_TypeFromString( Y, str )   \
  if( str == std::string( #Y ) )                        \
    return( Self::Y )

cpPlugins::Parameters::
Type cpPlugins::Parameters::
GetTypeFromString( const std::string& t )
{
  cpPlugins_Parameters_TypeFromString( String, t );
  else cpPlugins_Parameters_TypeFromString( Bool, t );
  else cpPlugins_Parameters_TypeFromString( Int, t );
  else cpPlugins_Parameters_TypeFromString( Uint, t );
  else cpPlugins_Parameters_TypeFromString( Real, t );
  else cpPlugins_Parameters_TypeFromString( OpenFileName, t );
  else cpPlugins_Parameters_TypeFromString( SaveFileName, t );
  else cpPlugins_Parameters_TypeFromString( PathName, t );
  else cpPlugins_Parameters_TypeFromString( StringList, t );
  else cpPlugins_Parameters_TypeFromString( BoolList, t );
  else cpPlugins_Parameters_TypeFromString( IntList, t );
  else cpPlugins_Parameters_TypeFromString( UintList, t );
  else cpPlugins_Parameters_TypeFromString( RealList, t );
  else cpPlugins_Parameters_TypeFromString( OpenFileNameList, t );
  else cpPlugins_Parameters_TypeFromString( SaveFileNameList, t );
  else cpPlugins_Parameters_TypeFromString( PathNameList, t );
  else cpPlugins_Parameters_TypeFromString( Choices, t );
  else return( Self::NoType );
}

// -------------------------------------------------------------------------
std::string cpPlugins::Parameters::
GetString( const std::string& name, bool force ) const
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    if( i->second.first == Self::String || force )
      return( i->second.second );
    else
      return( "" );
  }
  else
    return( "" );
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
SetString( const std::string& name, const std::string& v, bool force )
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    if( i->second.first == Self::String || force )
    {
      if( i->second.second != v )
      {
        i->second.second = v;
        this->Modified( );

      } // fi

    } // fi

  } // fi
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
ConfigureAsChoices(
  const std::string& name, const std::vector< std::string >& choices
  )
{
  // It is invalid not to give choices when configuring
  if( choices.size( ) == 0 )
    return;

  std::stringstream str_choices;
  str_choices << choices[ 0 ];
  for( unsigned int i = 1; i < choices.size( ); ++i )
    str_choices << "#" << choices[ i ];
  str_choices << "@";
  this->m_Parameters[ name ] =
    TParameter( Self::Choices, str_choices.str( ) );
  this->Modified( );
}

// -------------------------------------------------------------------------
std::vector< std::string > cpPlugins::Parameters::
GetChoices( const std::string& name ) const
{
  std::vector< std::string > choices;

  TParameters::const_iterator i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    if( i->second.first == Self::Choices )
    {
      std::istringstream str_choices( i->second.second );
      std::string real_choices;
      std::getline( str_choices, real_choices, '@' );
      std::istringstream str( real_choices );
      std::string token;
      while( std::getline( str, token, '#' ) )
        choices.push_back( token );

    } // fi

  } // fi
  return( choices );
}

// -------------------------------------------------------------------------
std::string cpPlugins::Parameters::
GetSelectedChoice( const std::string& name ) const
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    if( i->second.first == Self::Choices )
    {
      std::istringstream str_choices( i->second.second );
      std::string real_choice;
      std::getline( str_choices, real_choice, '@' );
      std::getline( str_choices, real_choice, '@' );
      return( real_choice );
    }
    else
      return( "" );
  }
  else
    return( "" );
}

// -------------------------------------------------------------------------
bool cpPlugins::Parameters::
SetSelectedChoice( const std::string& name, const std::string& choice )
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    if( i->second.first == Self::Choices )
    {
      std::istringstream str_choices( i->second.second );
      std::string choices;
      std::getline( str_choices, choices, '@' );
      if( choices.find( choice ) != std::string::npos )
      {
        std::stringstream new_choices;
        new_choices << choices << "@" << choice;
        i->second.second = new_choices.str( );
        this->Modified( );
        return( true );
      }
      else
        return( false );
    }
    else
      return( false );
  }
  else
    return( false );
}

// -------------------------------------------------------------------------
std::string cpPlugins::Parameters::
GetAcceptedFileExtensions( const std::string& name ) const
{
  auto i = this->m_AcceptedFileExtensions.find( name );
  if( i != this->m_AcceptedFileExtensions.end( ) )
    return( i->second );
  else
    return( "" );
}

// -------------------------------------------------------------------------
void cpPlugins::Parameters::
SetAcceptedFileExtensions(
  const std::string& name, const std::string& extensions
  )
{
  auto i = this->m_Parameters.find( name );
  if( i != this->m_Parameters.end( ) )
  {
    bool is_valid = ( i->second.first == Self::OpenFileName );
    is_valid     |= ( i->second.first == Self::SaveFileName );
    is_valid     |= ( i->second.first == Self::OpenFileNameList );
    is_valid     |= ( i->second.first == Self::SaveFileNameList );
    if( is_valid )
      this->m_AcceptedFileExtensions[ name ] = extensions;

  } // fi
}

// -------------------------------------------------------------------------
bool cpPlugins::Parameters::
ToXML(
  tinyxml2::XMLDocument* doc, tinyxml2::XMLElement* parent_elem
  ) const
{
  if( parent_elem == NULL )
    return( false );

  auto pIt = this->m_Parameters.begin( );
  for( ; pIt != this->m_Parameters.end( ); ++pIt )
  {
    tinyxml2::XMLElement* p = doc->NewElement( "parameter" );
    p->SetAttribute( "name", pIt->first.c_str( ) );
    p->SetAttribute( "value", pIt->second.second.c_str( ) );
    p->SetAttribute( "type", this->GetTypeAsString( pIt->first ).c_str( ) );
    parent_elem->InsertEndChild( p );

  } // rof
  return( true );
}

// -------------------------------------------------------------------------
bool cpPlugins::Parameters::
FromXML( const tinyxml2::XMLElement* filter_elem )
{
  const tinyxml2::XMLElement* param =
    filter_elem->FirstChildElement( "parameter" );
  bool ret = false;
  while( param != NULL )
  {
    const char* param_name = param->Attribute( "name" );
    const char* param_type = param->Attribute( "type" );
    if( param_name != NULL && param_type != NULL )
    {
      TParameter value;
      value.second = param->Attribute( "value" );
      value.first = Self::GetTypeFromString( param_type );
      this->m_Parameters[ param_name ] = value;

    } // fi
    param = param->NextSiblingElement( "parameter" );
    ret = true;

  } // elihw
  this->Modified( );
  return( ret );
}

// -------------------------------------------------------------------------
cpPlugins::Parameters::
TParameters& cpPlugins::Parameters::
GetRawParameters( )
{
  return( this->m_Parameters );
}

// -------------------------------------------------------------------------
const cpPlugins::Parameters::
TParameters& cpPlugins::Parameters::
GetRawParameters( ) const
{
  return( this->m_Parameters );
}

// eof - $RCSfile$