/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	pfConsoleCmd Functions													//
//																			//
//////////////////////////////////////////////////////////////////////////////

#include "pfConsoleCmd.h"
#include "hsUtils.h"


//////////////////////////////////////////////////////////////////////////////
//// pfConsoleCmdGroup Stuff /////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

pfConsoleCmdGroup	*pfConsoleCmdGroup::fBaseCmdGroup = nil;
UInt32				pfConsoleCmdGroup::fBaseCmdGroupRef = 0;


//// Constructor & Destructor ////////////////////////////////////////////////

pfConsoleCmdGroup::pfConsoleCmdGroup( char *name, char *parent )
{
	Dummy();
	DummyJunior();
	DummyNet();
	DummyAvatar();
#ifdef PLASMA_CCR_RELEASE
	DummyCCR();
#endif // PLASMA_CCR_RELEASE

	fNext = nil;
	fPrevPtr = nil;
	fCommands = nil;
	fSubGroups = nil;
	
	if( name == nil )
	{
		/// Create base
		hsStrncpy( fName, "base", sizeof( fName ) );
		fParentGroup = nil;
	}
	else
	{
		pfConsoleCmdGroup	*group = GetBaseGroup();

		if( parent != nil && parent[ 0 ] != 0 )
		{
			group = group->FindSubGroupRecurse( parent );
			hsAssert( group != nil, "Trying to register group under nonexistant group!" );
		}

		hsStrncpy( fName, name, sizeof( fName ) );
		group->AddSubGroup( this );
		fParentGroup = group;
	}

}

pfConsoleCmdGroup::~pfConsoleCmdGroup()
{
	if( this != fBaseCmdGroup )
	{
		Unlink();

		DecBaseCmdGroupRef();
	}
}

//// GetBaseGroup ////////////////////////////////////////////////////////////

pfConsoleCmdGroup	*pfConsoleCmdGroup::GetBaseGroup( void )
{
	if( fBaseCmdGroup == nil )
	{
		/// Initialize base group
		fBaseCmdGroup = TRACKED_NEW pfConsoleCmdGroup( nil, nil );
	}

	return fBaseCmdGroup;
}

//// DecBaseCmdGroupRef //////////////////////////////////////////////////////

void	pfConsoleCmdGroup::DecBaseCmdGroupRef( void )
{
	fBaseCmdGroupRef--;
	if( fBaseCmdGroupRef == 0 )
	{
		delete fBaseCmdGroup;
		fBaseCmdGroup = nil;
	}
}

//// Add Functions ///////////////////////////////////////////////////////////

void	pfConsoleCmdGroup::AddCommand( pfConsoleCmd *cmd )
{
	cmd->Link( &fCommands );
	fBaseCmdGroupRef++;
}

void	pfConsoleCmdGroup::AddSubGroup( pfConsoleCmdGroup *group )
{
	group->Link( &fSubGroups );
	fBaseCmdGroupRef++;
}

//// FindCommand /////////////////////////////////////////////////////////////
//	No longer recursive.

pfConsoleCmd	*pfConsoleCmdGroup::FindCommand( char *name )
{
	pfConsoleCmd	*cmd;


	hsAssert( name != nil, "nil name passed to FindCommand()" );

	/// Only search locally
	for( cmd = fCommands; cmd != nil; cmd = cmd->GetNext() )
	{
		if( strcmp( cmd->GetName(), name ) == 0 )
			return cmd;
	}

	return nil;
}

//// FindNestedPartialCommand ////////////////////////////////////////////////
//	Okay. YAFF. This one searches through the group and its children looking
//	for a partial command based on the string given. The counter determines
//	how many matches it skips before returning a match. (That way you can
//	cycle through matches by sending 1 + the last counter every time).

pfConsoleCmd	*pfConsoleCmdGroup::FindNestedPartialCommand( char *name, UInt32 *counter )
{
	pfConsoleCmd		*cmd;
	pfConsoleCmdGroup	*group;


	hsAssert( name != nil, "nil name passed to FindNestedPartialCommand()" );
	hsAssert( counter != nil, "nil counter passed to FindNestedPartialCommand()" );

	// Try us
	for( cmd = fCommands; cmd != nil; cmd = cmd->GetNext() )
	{
		if( _strnicmp( cmd->GetName(), name, strlen( name ) ) == 0 )
		{
			if( *counter == 0 )
				return cmd;

			(*counter)--;
		}
	}

	// Try children
	for( group = fSubGroups; group != nil; group = group->GetNext() )
	{
		cmd = group->FindNestedPartialCommand( name, counter );
		if( cmd != nil )
			return cmd;
	}

	return nil;
}

//// FindSubGroup ////////////////////////////////////////////////////////////

pfConsoleCmdGroup	*pfConsoleCmdGroup::FindSubGroup( char *name )
{
	pfConsoleCmdGroup	*group;


	hsAssert( name != nil, "nil name passed to FindSubGroup()" );

	/// Only search locally
	for( group = fSubGroups; group != nil; group = group->GetNext() )
	{
		if( strcmp( group->GetName(), name ) == 0 )
			return group;
	}

	return nil;
}

//// FindSubGroupRecurse /////////////////////////////////////////////////////
//	Resurces through a string, finding the final subgroup that the string
//	represents. Parses with spaces, _ or . as the separators. Copies string.

pfConsoleCmdGroup	*pfConsoleCmdGroup::FindSubGroupRecurse( const char *name )
{
	char				*ptr, *string;
	pfConsoleCmdGroup	*group;
	static char			seps[] = " ._";


	string = TRACKED_NEW char[ strlen( name ) + 1 ];
	hsAssert( string != nil, "Cannot allocate string in FindSubGroupRecurse()" );
	strcpy( string, name );

	/// Scan for subgroups
	group = pfConsoleCmdGroup::GetBaseGroup();
	ptr = strtok( string, seps );
	while( ptr != nil )
	{
		// Take this token and check to see if it's a group
		group = group->FindSubGroup( ptr );
		hsAssert( group != nil, "Invalid group name to FindSubGroupRecurse()" );

		ptr = strtok( nil, seps );
	}

	delete [] string;
	return group;
}

//// FindCommandNoCase ///////////////////////////////////////////////////////
//	Case-insensitive version of FindCommand.

pfConsoleCmd	*pfConsoleCmdGroup::FindCommandNoCase( char *name, UInt8 flags, pfConsoleCmd *start )
{
	pfConsoleCmd	*cmd;


	hsAssert( name != nil, "nil name passed to FindCommandNoCase()" );

	/// Only search locally
	if( start == nil )
		start = fCommands;
	else
		start = start->GetNext();

	if( flags & kFindPartial )
	{
		for( cmd = start; cmd != nil; cmd = cmd->GetNext() )
		{
			if( _strnicmp( cmd->GetName(), name, strlen( name ) ) == 0 )
				return cmd;
		}
	}
	else
	{
		for( cmd = start; cmd != nil; cmd = cmd->GetNext() )
		{
			if( stricmp( cmd->GetName(), name ) == 0 )
				return cmd;
		}
	}

	return nil;
}

//// FindSubGroupNoCase //////////////////////////////////////////////////////

pfConsoleCmdGroup	*pfConsoleCmdGroup::FindSubGroupNoCase( char *name, UInt8 flags, pfConsoleCmdGroup *start )
{
	pfConsoleCmdGroup	*group;


	hsAssert( name != nil, "nil name passed to FindSubGroupNoCase()" );

	/// Only search locally
	if( start == nil )
		start = fSubGroups;
	else
		start = start->GetNext();

	if( flags & kFindPartial )
	{
		for( group = start; group != nil; group = group->GetNext() )
		{
			if( _strnicmp( group->GetName(), name, strlen( name ) ) == 0 )
				return group;
		}
	}
	else
	{
		for( group = start; group != nil; group = group->GetNext() )
		{
			if( stricmp( group->GetName(), name ) == 0 )
				return group;
		}
	}

	return nil;
}

//// Link & Unlink ///////////////////////////////////////////////////////////

void	pfConsoleCmdGroup::Link( pfConsoleCmdGroup **prevPtr )
{
	hsAssert( fNext == nil && fPrevPtr == nil, "Trying to link console group that's already linked!" );

	fNext = *prevPtr;
	if( *prevPtr )
		(*prevPtr)->fPrevPtr = &fNext;
	fPrevPtr = prevPtr;
	*fPrevPtr = this;
}

void	pfConsoleCmdGroup::Unlink( void )
{
	hsAssert( fNext != nil || fPrevPtr != nil, "Trying to unlink console group that isn't linked!" );

	if( fNext )
		fNext->fPrevPtr = fPrevPtr;
	*fPrevPtr = fNext;
}


int  pfConsoleCmdGroup::IterateCommands(pfConsoleCmdIterator* t, int depth)
{
	pfConsoleCmd *cmd;

	cmd = this->GetFirstCommand();
	while(cmd)
	{
		t->ProcessCmd(cmd,depth);
		cmd = cmd->GetNext();
	}

	pfConsoleCmdGroup *grp;

	grp = this->GetFirstSubGroup();
	while(grp)
	{
		if(t->ProcessGroup(grp, depth))
			grp->IterateCommands(t, depth+1);
		grp = grp->GetNext();
	}
	return 0;
}



//////////////////////////////////////////////////////////////////////////////
//// pfConsoleCmd Functions //////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

char	pfConsoleCmd::fSigTypes[ kNumTypes ][ 8 ] = { "int", "float", "bool", "string", "char", "void", "..." };

pfConsoleCmd::pfConsoleCmd( char *group, char *name, char *paramList, char *help, 
							pfConsoleCmdPtr func, hsBool localOnly )
{
	fNext = nil;
	fPrevPtr = nil;

	fFunction = func;
	fLocalOnly = localOnly;
	
	hsStrncpy( fName, name, sizeof( fName ) );
	fHelpString = help;

	ICreateSignature( paramList );
	Register( group, name );
}

pfConsoleCmd::~pfConsoleCmd()
{
	int		i;


	for( i = 0; i < fSigLabels.GetCount(); i++ )
	{
		if( fSigLabels[ i ] != nil )
			delete [] fSigLabels[ i ];
	}
	Unregister();
	
	fSignature.Reset();
	fSigLabels.Reset();
}

//// ICreateSignature ////////////////////////////////////////////////////////
//	Creates the signature and sig labels based on the given string.

void	pfConsoleCmd::ICreateSignature( char *paramList )
{
	static char	seps[] = " :-";

	char	params[ 256 ];
	char	*ptr, *nextPtr, *tok, *tok2;
	int		i;


	/// Simple check
	if( paramList == nil )
	{
		fSignature.Push( kAny );
		fSigLabels.Push( (char *)nil );
		return;
	}

	/// So we can do stuff to it
	hsAssert( strlen( paramList ) < sizeof( params ), "Make the (#*$& params string larger!" );
	hsStrcpy( params, paramList );

	fSignature.Empty();
	fSigLabels.Empty();

	/// Loop through all the types given in the list
	ptr = params;
	do
	{
		/// Find break
		nextPtr = strchr( ptr, ',' );
		if( nextPtr != nil )
		{
			*nextPtr = 0;
			nextPtr++;
		}

		/// Do this param
		tok = strtok( ptr, seps );
		if( tok == nil && ptr == params )
			break;

		hsAssert( tok != nil, "Bad parameter list for console command!" );
		tok2 = strtok( nil, seps );

		if( tok2 != nil )
		{
			// Type and label: assume label second
			fSigLabels.Push( hsStrcpy( tok2 ) );			
		}
		else
			fSigLabels.Push( (char *)nil );

		// Find type
		for( i = 0; i < kNumTypes; i++ )
		{
			if( strcmp( fSigTypes[ i ], tok ) == 0 )
			{
				fSignature.Push( (UInt8)i );
				break;
			}
		}

		hsAssert( i < kNumTypes, "Bad parameter type in console command parameter list!" );

	} while( ( ptr = nextPtr ) != nil );
}

//// Register ////////////////////////////////////////////////////////////////
//	Finds the group this command should be in and registers it with that
//	group.

void	pfConsoleCmd::Register( char *group, char *name )
{
	pfConsoleCmdGroup	*g;


	if( group == nil || group[ 0 ] == 0 )
	{
		g = pfConsoleCmdGroup::GetBaseGroup();
		g->AddCommand( this );
	}
	else
	{
		g = pfConsoleCmdGroup::FindSubGroupRecurse( group );
		hsAssert( g != nil, "Trying to register command under nonexistant group!" );
		g->AddCommand( this );
	}

	fParentGroup = g;
}

//// Unregister //////////////////////////////////////////////////////////////

void	pfConsoleCmd::Unregister( void )
{
	Unlink();
	pfConsoleCmdGroup::DecBaseCmdGroupRef();
}

//// Execute /////////////////////////////////////////////////////////////////
//	Run da thing!

void	pfConsoleCmd::Execute( Int32 numParams, pfConsoleCmdParam *params, void (*PrintFn)( const char * ) )
{
	fFunction( numParams, params, PrintFn );
}

//// Link & Unlink ///////////////////////////////////////////////////////////

void	pfConsoleCmd::Link( pfConsoleCmd **prevPtr )
{
	hsAssert( fNext == nil && fPrevPtr == nil, "Trying to link console command that's already linked!" );

	fNext = *prevPtr;
	if( *prevPtr )
		(*prevPtr)->fPrevPtr = &fNext;
	fPrevPtr = prevPtr;
	*fPrevPtr = this;
}

void	pfConsoleCmd::Unlink( void )
{
	hsAssert( fNext != nil || fPrevPtr != nil, "Trying to unlink console command that isn't linked!" );

	if( fNext )
		fNext->fPrevPtr = fPrevPtr;
	*fPrevPtr = fNext;
}

//// GetSigEntry /////////////////////////////////////////////////////////////

UInt8	pfConsoleCmd::GetSigEntry( UInt8 i )
{
	if( fSignature.GetCount() == 0 )
		return kNone;

	if( i < fSignature.GetCount() )
	{
		if( fSignature[ i ] == kEtc )
			return kAny;

		return fSignature[ i ];
	}

	if( fSignature[ fSignature.GetCount() - 1 ] == kEtc )
		return kAny;

	return kNone;
}

//// GetSignature ////////////////////////////////////////////////////////////
//	Gets the signature of the command as a string. Format is:
//		name [ type param [, type param ... ] ]
//	WARNING: uses a static buffer, so don't rely on the contents if you call
//	it more than once! (You shouldn't need to, though)

const char	*pfConsoleCmd::GetSignature( void )
{
	static	char	string[ 256 ];
	
	int		i;
	char	pStr[ 128 ];


	strcpy( string, fName );
	for( i = 0; i < fSignature.GetCount(); i++ )
	{
		if( fSigLabels[ i ] == nil )
			sprintf( pStr, "%s", fSigTypes[ fSignature[ i ] ] );
		else
			sprintf( pStr, "%s %s", fSigTypes[ fSignature[ i ] ], fSigLabels[ i ] );

		hsAssert( strlen( string ) + strlen( pStr ) + 2 < sizeof( string ), "Not enough room for signature string" );
		strcat( string, ( i > 0 ) ? ", " : " " );

		strcat( string, pStr );
	}

	return string;
}


//////////////////////////////////////////////////////////////////////////////
//// pfConsoleCmdParam Functions /////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

//// Conversion Functions ////////////////////////////////////////////////////

const int &	pfConsoleCmdParam::IToInt( void ) const
{
	hsAssert( fType == kInt || fType == kAny, "Trying to use a non-int parameter as an int!" );

	static int	i;
	if( fType == kAny )
	{
		hsAssert( fValue.s != nil, "Weird parameter during conversion" );
		i = atoi( fValue.s );
		return i;
	}
	
	return fValue.i;
}

const float &	pfConsoleCmdParam::IToFloat( void ) const
{
	hsAssert( fType == kFloat || fType == kAny, "Trying to use a non-float parameter as a float!" );

	static float f;
	if( fType == kAny )
	{
		hsAssert( fValue.s != nil, "Weird parameter during conversion" );
		f = (float)atof( fValue.s );
		return f;
	}
	
	return fValue.f;
}

const bool &	pfConsoleCmdParam::IToBool( void ) const
{
	hsAssert( fType == kBool || fType == kAny, "Trying to use a non-bool parameter as a bool!" );

	static bool	b;
	if( fType == kAny )
	{
		hsAssert( fValue.s != nil, "Weird parameter during conversion" );
		if( atoi( fValue.s ) > 0 || stricmp( fValue.s, "true" ) == 0 )
			b = true;
		else
			b = false;

		return b;
	}
	
	return fValue.b;
}

const pfConsoleCmdParam::CharPtr &	pfConsoleCmdParam::IToString( void ) const
{
	hsAssert( fType == kString || fType == kAny, "Trying to use a non-string parameter as a string!" );

	return fValue.s;
}

const char &	pfConsoleCmdParam::IToChar( void ) const
{
	hsAssert( fType == kChar || fType == kAny, "Trying to use a non-char parameter as a char!" );

	static char		c;
	if( fType == kAny )
	{
		hsAssert( fValue.s != nil, "Weird parameter during conversion" );
		c = fValue.s[ 0 ];
		return c;
	}
	
	return fValue.c;
}