/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").

Doom 3 BFG Edition Source Code 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.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#pragma hdrstop
#include "precompiled.h"

#include "Window.h"
#include "Winvar.h"
#include "GuiScript.h"
#include "UserInterfaceLocal.h"

/*
=========================
Script_Set
=========================
*/
void Script_Set( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idStr key, val;
	idWinStr* dest = dynamic_cast<idWinStr*>( ( *src )[0].var );
	if( dest )
	{
		if( idStr::Icmp( *dest, "cmd" ) == 0 )
		{
			dest = dynamic_cast<idWinStr*>( ( *src )[1].var );
			int parmCount = src->Num();
			if( parmCount > 2 )
			{
				val = dest->c_str();
				int i = 2;
				while( i < parmCount )
				{
					val += " \"";
					val += ( *src )[i].var->c_str();
					val += "\"";
					i++;
				}
				window->AddCommand( val );
			}
			else
			{
				window->AddCommand( *dest );
			}
			return;
		}
	}
	( *src )[0].var->Set( ( *src )[1].var->c_str() );
	( *src )[0].var->SetEval( false );
}

/*
=========================
Script_SetFocus
=========================
*/
void Script_SetFocus( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idWinStr* parm = dynamic_cast<idWinStr*>( ( *src )[0].var );
	if( parm )
	{
		drawWin_t* win = window->GetGui()->GetDesktop()->FindChildByName( *parm );
		if( win != NULL && win->win != NULL )
		{
			window->SetFocus( win->win );
		}
	}
}

/*
=========================
Script_ShowCursor
=========================
*/
void Script_ShowCursor( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idWinStr* parm = dynamic_cast<idWinStr*>( ( *src )[0].var );
	if( parm )
	{
		if( atoi( *parm ) )
		{
			window->GetGui()->GetDesktop()->ClearFlag( WIN_NOCURSOR );
		}
		else
		{
			window->GetGui()->GetDesktop()->SetFlag( WIN_NOCURSOR );
		}
	}
}

/*
=========================
Script_RunScript

 run scripts must come after any set cmd set's in the script
=========================
*/
void Script_RunScript( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idWinStr* parm = dynamic_cast<idWinStr*>( ( *src )[0].var );
	if( parm )
	{
		idStr str = window->cmd;
		str += " ; runScript ";
		str += parm->c_str();
		window->cmd = str;
	}
}

/*
=========================
Script_LocalSound
=========================
*/
void Script_LocalSound( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idWinStr* parm = dynamic_cast<idWinStr*>( ( *src )[0].var );
	if( parm )
	{
		common->SW()->PlayShaderDirectly( *parm );
	}
}

/*
=========================
Script_EvalRegs
=========================
*/
void Script_EvalRegs( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	window->EvalRegs( -1, true );
}

/*
=========================
Script_EndGame
=========================
*/
void Script_EndGame( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	cmdSystem->BufferCommandText( CMD_EXEC_APPEND, "disconnect\n" );
}

/*
=========================
Script_ResetTime
=========================
*/
void Script_ResetTime( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	idWinStr* parm = dynamic_cast<idWinStr*>( ( *src )[0].var );
	drawWin_t* win = NULL;
	if( parm != NULL && src->Num() > 1 )
	{
		win = window->GetGui()->GetDesktop()->FindChildByName( *parm );
		parm = dynamic_cast<idWinStr*>( ( *src )[1].var );
	}
	if( parm == NULL )
	{
		return;
	}
	
	if( win != NULL && win->win != NULL )
	{
		win->win->ResetTime( atoi( *parm ) );
		win->win->EvalRegs( -1, true );
	}
	else
	{
		window->ResetTime( atoi( *parm ) );
		window->EvalRegs( -1, true );
	}
}

/*
=========================
Script_ResetCinematics
=========================
*/
void Script_ResetCinematics( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	window->ResetCinematics();
}

/*
=========================
Script_Transition
=========================
*/
void Script_Transition( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src )
{
	// transitions always affect rect or vec4 vars
	if( src->Num() >= 4 )
	{
		idWinRectangle* rect = NULL;
		idWinVec4* vec4 = dynamic_cast<idWinVec4*>( ( *src )[0].var );
		//
		//  added float variable
		idWinFloat* val = NULL;
		//
		if( vec4 == NULL )
		{
			rect = dynamic_cast<idWinRectangle*>( ( *src )[0].var );
			//
			//  added float variable
			if( NULL == rect )
			{
				val = dynamic_cast<idWinFloat*>( ( *src )[0].var );
			}
			//
		}
		idWinVec4* from = dynamic_cast<idWinVec4*>( ( *src )[1].var );
		idWinVec4* to = dynamic_cast<idWinVec4*>( ( *src )[2].var );
		idWinStr* timeStr = dynamic_cast<idWinStr*>( ( *src )[3].var );
		//
		//  added float variable
		if( !( ( vec4 || rect || val ) && from && to && timeStr ) )
		{
			//
			common->Warning( "Bad transition in gui %s in window %s\n", window->GetGui()->GetSourceFile(), window->GetName() );
			return;
		}
		int time = atoi( *timeStr );
		float ac = 0.0f;
		float dc = 0.0f;
		if( src->Num() > 4 )
		{
			idWinStr* acv = dynamic_cast<idWinStr*>( ( *src )[4].var );
			idWinStr* dcv = dynamic_cast<idWinStr*>( ( *src )[5].var );
			assert( acv && dcv );
			ac = atof( *acv );
			dc = atof( *dcv );
		}
		
		if( vec4 )
		{
			vec4->SetEval( false );
			window->AddTransition( vec4, *from, *to, time, ac, dc );
			//
			//  added float variable
		}
		else if( val )
		{
			val->SetEval( false );
			window->AddTransition( val, *from, *to, time, ac, dc );
			//
		}
		else
		{
			rect->SetEval( false );
			window->AddTransition( rect, *from, *to, time, ac, dc );
		}
		window->StartTransition();
	}
}

typedef struct
{
	const char* name;
	void ( *handler )( idWindow* window, idList<idGSWinVar, TAG_OLD_UI>* src );
	int mMinParms;
	int mMaxParms;
} guiCommandDef_t;

guiCommandDef_t commandList[] =
{
	{ "set", Script_Set, 2, 999 },
	{ "setFocus", Script_SetFocus, 1, 1 },
	{ "endGame", Script_EndGame, 0, 0 },
	{ "resetTime", Script_ResetTime, 0, 2 },
	{ "showCursor", Script_ShowCursor, 1, 1 },
	{ "resetCinematics", Script_ResetCinematics, 0, 2 },
	{ "transition", Script_Transition, 4, 6 },
	{ "localSound", Script_LocalSound, 1, 1 },
	{ "runScript", Script_RunScript, 1, 1 },
	{ "evalRegs", Script_EvalRegs, 0, 0 }
};

int	scriptCommandCount = sizeof( commandList ) / sizeof( guiCommandDef_t );


/*
=========================
idGuiScript::idGuiScript
=========================
*/
idGuiScript::idGuiScript()
{
	ifList = NULL;
	elseList = NULL;
	conditionReg = -1;
	handler = NULL;
	parms.SetGranularity( 2 );
}

/*
=========================
idGuiScript::~idGuiScript
=========================
*/
idGuiScript::~idGuiScript()
{
	delete ifList;
	delete elseList;
	int c = parms.Num();
	for( int i = 0; i < c; i++ )
	{
		if( parms[i].own )
		{
			delete parms[i].var;
		}
	}
}

/*
=========================
idGuiScript::WriteToSaveGame
=========================
*/
void idGuiScript::WriteToSaveGame( idFile* savefile )
{
	int i;
	
	if( ifList )
	{
		ifList->WriteToSaveGame( savefile );
	}
	if( elseList )
	{
		elseList->WriteToSaveGame( savefile );
	}
	
	savefile->Write( &conditionReg, sizeof( conditionReg ) );
	
	for( i = 0; i < parms.Num(); i++ )
	{
		if( parms[i].own )
		{
			parms[i].var->WriteToSaveGame( savefile );
		}
	}
}

/*
=========================
idGuiScript::ReadFromSaveGame
=========================
*/
void idGuiScript::ReadFromSaveGame( idFile* savefile )
{
	int i;
	
	if( ifList )
	{
		ifList->ReadFromSaveGame( savefile );
	}
	if( elseList )
	{
		elseList->ReadFromSaveGame( savefile );
	}
	
	savefile->Read( &conditionReg, sizeof( conditionReg ) );
	
	for( i = 0; i < parms.Num(); i++ )
	{
		if( parms[i].own )
		{
			parms[i].var->ReadFromSaveGame( savefile );
		}
	}
}

/*
=========================
idGuiScript::Parse
=========================
*/
bool idGuiScript::Parse( idTokenParser* src )
{
	int i;
	
	// first token should be function call
	// then a potentially variable set of parms
	// ended with a ;
	idToken token;
	if( !src->ReadToken( &token ) )
	{
		src->Error( "Unexpected end of file" );
		return false;
	}
	
	handler	= NULL;
	
	for( i = 0; i < scriptCommandCount ; i++ )
	{
		if( idStr::Icmp( token, commandList[i].name ) == 0 )
		{
			handler = commandList[i].handler;
			break;
		}
	}
	
	if( handler == NULL )
	{
		src->Error( "Uknown script call %s", token.c_str() );
	}
	// now read parms til ;
	// all parms are read as idWinStr's but will be fixed up later
	// to be proper types
	while( 1 )
	{
		if( !src->ReadToken( &token ) )
		{
			src->Error( "Unexpected end of file" );
			return false;
		}
		
		if( idStr::Icmp( token, ";" ) == 0 )
		{
			break;
		}
		
		if( idStr::Icmp( token, "}" ) == 0 )
		{
			src->UnreadToken( &token );
			break;
		}
		
		idWinStr* str = new( TAG_OLD_UI ) idWinStr();
		*str = token;
		idGSWinVar wv;
		wv.own = true;
		wv.var = str;
		parms.Append( wv );
	}
	
	//
	//  verify min/max params
	if( handler && ( parms.Num() < commandList[i].mMinParms || parms.Num() > commandList[i].mMaxParms ) )
	{
		src->Error( "incorrect number of parameters for script %s", commandList[i].name );
	}
	//
	
	return true;
}

/*
=========================
idGuiScriptList::Execute
=========================
*/
void idGuiScriptList::Execute( idWindow* win )
{
	int c = list.Num();
	for( int i = 0; i < c; i++ )
	{
		idGuiScript* gs = list[i];
		assert( gs );
		if( gs->conditionReg >= 0 )
		{
			if( win->HasOps() )
			{
				float f = win->EvalRegs( gs->conditionReg );
				if( f )
				{
					if( gs->ifList )
					{
						win->RunScriptList( gs->ifList );
					}
				}
				else if( gs->elseList )
				{
					win->RunScriptList( gs->elseList );
				}
			}
		}
		gs->Execute( win );
	}
}

/*
=========================
idGuiScriptList::FixupParms
=========================
*/
void idGuiScript::FixupParms( idWindow* win )
{
	if( handler == &Script_Set )
	{
		bool precacheBackground = false;
		bool precacheSounds = false;
		idWinStr* str = dynamic_cast<idWinStr*>( parms[0].var );
		assert( str );
		idWinVar* dest = win->GetWinVarByName( *str, true );
		if( dest )
		{
			delete parms[0].var;
			parms[0].var = dest;
			parms[0].own = false;
			
			if( dynamic_cast<idWinBackground*>( dest ) != NULL )
			{
				precacheBackground = true;
			}
		}
		else if( idStr::Icmp( str->c_str(), "cmd" ) == 0 )
		{
			precacheSounds = true;
		}
		int parmCount = parms.Num();
		for( int i = 1; i < parmCount; i++ )
		{
			idWinStr* str = dynamic_cast<idWinStr*>( parms[i].var );
			if( idStr::Icmpn( *str, "gui::", 5 ) == 0 )
			{
			
				//  always use a string here, no point using a float if it is one
				//  FIXME: This creates duplicate variables, while not technically a problem since they
				//  are all bound to the same guiDict, it does consume extra memory and is generally a bad thing
				idWinStr* defvar = new( TAG_OLD_UI ) idWinStr();
				defvar->Init( *str, win );
				win->AddDefinedVar( defvar );
				delete parms[i].var;
				parms[i].var = defvar;
				parms[i].own = false;
				
				//dest = win->GetWinVarByName(*str, true);
				//if (dest) {
				//	delete parms[i].var;
				//	parms[i].var = dest;
				//	parms[i].own = false;
				//}
				//
			}
			else if( ( *str[0] ) == '$' )
			{
				//
				//  dont include the $ when asking for variable
				dest = win->GetGui()->GetDesktop()->GetWinVarByName( ( const char* )( *str ) + 1, true );
				//
				if( dest )
				{
					delete parms[i].var;
					parms[i].var = dest;
					parms[i].own = false;
				}
			}
			else if( idStr::Cmpn( str->c_str(), STRTABLE_ID, STRTABLE_ID_LENGTH ) == 0 )
			{
				str->Set( idLocalization::GetString( str->c_str() ) );
			}
			else if( precacheBackground )
			{
				const idMaterial* mat = declManager->FindMaterial( str->c_str() );
				mat->SetSort( SS_GUI );
			}
			else if( precacheSounds )
			{
				// Search for "play <...>"
				idToken token;
				idParser parser( LEXFL_NOSTRINGCONCAT | LEXFL_ALLOWMULTICHARLITERALS | LEXFL_ALLOWBACKSLASHSTRINGCONCAT );
				parser.LoadMemory( str->c_str(), str->Length(), "command" );
				
				while( parser.ReadToken( &token ) )
				{
					if( token.Icmp( "play" ) == 0 )
					{
						if( parser.ReadToken( &token ) && ( token != "" ) )
						{
							declManager->FindSound( token.c_str() );
						}
					}
				}
			}
		}
	}
	else if( handler == &Script_Transition )
	{
		if( parms.Num() < 4 )
		{
			common->Warning( "Window %s in gui %s has a bad transition definition", win->GetName(), win->GetGui()->GetSourceFile() );
		}
		idWinStr* str = dynamic_cast<idWinStr*>( parms[0].var );
		assert( str );
		
		//
		drawWin_t* destowner;
		idWinVar* dest = win->GetWinVarByName( *str, true, &destowner );
		//
		
		if( dest )
		{
			delete parms[0].var;
			parms[0].var = dest;
			parms[0].own = false;
		}
		else
		{
			common->Warning( "Window %s in gui %s: a transition does not have a valid destination var %s", win->GetName(), win->GetGui()->GetSourceFile(), str->c_str() );
		}
		
		//
		//  support variables as parameters
		int c;
		for( c = 1; c < 3; c ++ )
		{
			str = dynamic_cast<idWinStr*>( parms[c].var );
			
			idWinVec4* v4 = new( TAG_OLD_UI ) idWinVec4;
			parms[c].var = v4;
			parms[c].own = true;
			
			drawWin_t* owner = NULL;
			
			if( ( *str[0] ) == '$' )
			{
				dest = win->GetWinVarByName( ( const char* )( *str ) + 1, true, &owner );
			}
			else
			{
				dest = NULL;
			}
			
			if( dest )
			{
				idWindow* ownerparent;
				idWindow* destparent;
				if( owner != NULL )
				{
					ownerparent = owner->simp ? owner->simp->GetParent() : owner->win->GetParent();
					destparent  = destowner->simp ? destowner->simp->GetParent() : destowner->win->GetParent();
					
					// If its the rectangle they are referencing then adjust it
					if( ownerparent && destparent &&
							( dest == ( owner->simp ? owner->simp->GetWinVarByName( "rect" ) : owner->win->GetWinVarByName( "rect" ) ) ) )
					{
						idRectangle rect;
						rect = *( dynamic_cast<idWinRectangle*>( dest ) );
						ownerparent->ClientToScreen( &rect );
						destparent->ScreenToClient( &rect );
						*v4 = rect.ToVec4( );
					}
					else
					{
						v4->Set( dest->c_str( ) );
					}
				}
				else
				{
					v4->Set( dest->c_str( ) );
				}
			}
			else
			{
				v4->Set( *str );
			}
			
			delete str;
		}
		//
	}
	else if( handler == &Script_LocalSound )
	{
		idWinStr* str = dynamic_cast<idWinStr*>( parms[0].var );
		if( str )
		{
			declManager->FindSound( str->c_str() );
		}
	}
	else
	{
		int c = parms.Num();
		for( int i = 0; i < c; i++ )
		{
			parms[i].var->Init( parms[i].var->c_str(), win );
		}
	}
}

/*
=========================
idGuiScriptList::FixupParms
=========================
*/
void idGuiScriptList::FixupParms( idWindow* win )
{
	int c = list.Num();
	for( int i = 0; i < c; i++ )
	{
		idGuiScript* gs = list[i];
		gs->FixupParms( win );
		if( gs->ifList )
		{
			gs->ifList->FixupParms( win );
		}
		if( gs->elseList )
		{
			gs->elseList->FixupParms( win );
		}
	}
}

/*
=========================
idGuiScriptList::WriteToSaveGame
=========================
*/
void idGuiScriptList::WriteToSaveGame( idFile* savefile )
{
	int i;
	
	for( i = 0; i < list.Num(); i++ )
	{
		list[i]->WriteToSaveGame( savefile );
	}
}

/*
=========================
idGuiScriptList::ReadFromSaveGame
=========================
*/
void idGuiScriptList::ReadFromSaveGame( idFile* savefile )
{
	int i;
	
	for( i = 0; i < list.Num(); i++ )
	{
		list[i]->ReadFromSaveGame( savefile );
	}
}