#include "externals.hh"
#include "globals.hh"
#include "syncoverrides.hh"

#include <ebcl/SRDParser.hh>

using namespace sov;

#define M_SETOPT_( FIELD , VAR ) \
	if ( FIELD ) { return false; } \
	FIELD = (VAR); \
	return true


/*= PARSER DEFINITIONS =========================================================*/

namespace {

using namespace ebcl;
using SP_Section = T_SharedPtr< T_SyncOverrideSection >;

bool EnterSection_( T_SRDParserData const& data )
{
	*( data.targetData ) = NewShared< T_SyncOverrideSection >( (*data.input)[ 1 ].stringValue( ) );
	return true;
}

bool ExitSection_( T_SRDParserData const& data )
{
	auto& section( data.currentData->value< SP_Section >( ) );
	auto& parent( data.targetData->value< SP_Section >( ) );

	if ( section->overrides.empty( ) && section->subsections.empty( ) ) {
		T_StringBuilder sb;
		sb << "empty section '" << section->title << "'";
		data.errors.add( std::move( sb ) , (*data.input)[ 0 ] );
	} else {
		parent->subsections.add( section.makeOwned( ) );
	}

	return true;
}

/*------------------------------------------------------------------------------*/

using SP_Float = T_SharedPtr< A_Float >;

bool EnterFloat1_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Float ptr{ NewShared< T_Float >( input[ 2 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterFloat2_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Float ptr{ NewShared< T_Float2 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 2 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterFloat3_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Float ptr{ NewShared< T_Float3 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 4 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 3 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterFloat4_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Float ptr{ NewShared< T_Float4 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 4 ].stringValue( ) , input[ 5 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 4 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool AddFloat_( T_SRDParserData const& data )
{
	auto& fl( data.currentData->value< SP_Float >( ) );
	auto& parent( data.targetData->value< SP_Section >( ) );

	if ( fl->min( ) > fl->max( ) ) {
		data.errors.add( "invalid bounds" , (*data.input)[ 0 ] );
	}
	parent->overrides.add( fl.makeOwned( ) );
	return true;
}

/*------------------------------------------------------------------------------*/

bool FloatSetSlider_( T_SRDParserData const& data )
{
	data.currentData->value< SP_Float >( )->setSlider( );
	return true;
}

bool FloatSetMin_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	if ( !data.currentData->value< SP_Float >( )->setMin( input[ 1 ].floatValue( ) ) ) {
		data.errors.add( "duplicate minimal value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool FloatSetMax_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	if ( !data.currentData->value< SP_Float >( )->setMax( input[ 1 ].floatValue( ) ) ) {
		data.errors.add( "duplicate maximal value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool FloatSetStep_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	const auto v( input[ 1 ].floatValue( ) );
	if ( v <= 0 ) {
		data.errors.add( "invalid step value" , (*data.input)[ 1 ] );
	} else if ( !data.currentData->value< SP_Float >( )->setStep( v ) ) {
		data.errors.add( "duplicate step value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool FloatSetPower_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	const auto v( input[ 1 ].floatValue( ) );
	if ( v == 0 ) {
		data.errors.add( "invalid power value" , (*data.input)[ 1 ] );
	} else if ( !data.currentData->value< SP_Float >( )->setPower( v ) ) {
		data.errors.add( "duplicate power value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool FloatSetDecimals_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	const auto v( input[ 1 ].longValue( ) );
	if ( v < 0 || v > 20 ) {
		data.errors.add( "invalid decimals value" , (*data.input)[ 1 ] );
	} else if ( !data.currentData->value< SP_Float >( )->setDecimals( v ) ) {
		data.errors.add( "duplicate decimals value" , (*data.input)[ 0 ] );
	}
	return true;
}

/*------------------------------------------------------------------------------*/

using SP_Int = T_SharedPtr< A_Integer >;

bool EnterInt1_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Int ptr{ NewShared< T_Integer >( input[ 2 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterInt2_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Int ptr{ NewShared< T_Integer2 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 2 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterInt3_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Int ptr{ NewShared< T_Integer3 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 4 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 3 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool EnterInt4_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	SP_Int ptr{ NewShared< T_Integer4 >(
			input[ 2 ].stringValue( ) , input[ 3 ].stringValue( ) ,
			input[ 4 ].stringValue( ) , input[ 5 ].stringValue( ) ,
			input[ 1 ].stringValue( ) ) };
	if ( ptr->inputNames( ).size( ) != 4 ) {
		data.errors.add( "duplicate input names" , input[ 3 ].location( ) );
	}
	ptr->location( ) = input[ 0 ].location( );
	*( data.targetData ) = std::move( ptr );
	return true;
}

bool AddInt_( T_SRDParserData const& data )
{
	auto& fl( data.currentData->value< SP_Int >( ) );
	auto& parent( data.targetData->value< SP_Section >( ) );

	if ( fl->min( ) > fl->max( ) ) {
		data.errors.add( "invalid bounds" , (*data.input)[ 0 ] );
	}
	parent->overrides.add( fl.makeOwned( ) );
	return true;
}

/*------------------------------------------------------------------------------*/

bool IntSetSlider_( T_SRDParserData const& data )
{
	data.currentData->value< SP_Int >( )->setSlider( );
	return true;
}

bool IntSetMin_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	if ( !data.currentData->value< SP_Int >( )->setMin( input[ 1 ].longValue( ) ) ) {
		data.errors.add( "duplicate minimal value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool IntSetMax_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	if ( !data.currentData->value< SP_Int >( )->setMax( input[ 1 ].longValue( ) ) ) {
		data.errors.add( "duplicate maximal value" , (*data.input)[ 0 ] );
	}
	return true;
}

bool IntSetStep_( T_SRDParserData const& data )
{
	auto const& input( *( data.input ) );
	const auto v( input[ 1 ].floatValue( ) );
	if ( v <= 0 ) {
		data.errors.add( "invalid step value" , (*data.input)[ 1 ] );
	} else if ( !data.currentData->value< SP_Int >( )->setStep( v ) ) {
		data.errors.add( "duplicate step value" , (*data.input)[ 0 ] );
	}
	return true;
}

} // namespace

/*------------------------------------------------------------------------------*/

ebcl::T_SRDParserConfig sov::GetParserConfig( )
{
	using namespace ebcl;
	using namespace ebcl::SRD;
	T_SRDParserDefs defs( "root" );

	defs << OnStart( []( T_SRDParserData const& data ) -> bool {
		*( data.currentData ) = NewShared< T_SyncOverrideSection >( "*" );
		return true;
	} );

	defs.context( "root" )
		<< ( Rule() << "section" << Text( ) << EnterContext( "section" )
				<< OnEnter( EnterSection_ )
				<< OnExit( ExitSection_ ) )
	;
	defs.context( "section" )
		<< ( Rule() << "section" << Text( ) << EnterContext( "section" )
				<< OnEnter( EnterSection_ )
				<< OnExit( ExitSection_ ) )
		// Floating point controls
		<< ( Rule() << "float" << Text( ) << Word( )
				<< EnterContext( "float" )
				<< OnEnter( EnterFloat1_ )
				<< OnExit( AddFloat_ ) )
		<< ( Rule() << "float2" << Text( )
				<< ( SRD::Times( 2 ) << Word( ) )
				<< EnterContext( "float" )
				<< OnEnter( EnterFloat2_ )
				<< OnExit( AddFloat_ ) )
		<< ( Rule() << "float3" << Text( )
				<< ( SRD::Times( 3 ) << Word( ) )
				<< EnterContext( "float" )
				<< OnEnter( EnterFloat3_ )
				<< OnExit( AddFloat_ ) )
		<< ( Rule() << "float4" << Text( )
				<< ( SRD::Times( 4 ) << Word( ) )
				<< EnterContext( "float" )
				<< OnEnter( EnterFloat4_ )
				<< OnExit( AddFloat_ ) )
		// Integer controls
		<< ( Rule() << "int" << Text( ) << Word( )
				<< EnterContext( "int" )
				<< OnEnter( EnterInt1_ )
				<< OnExit( AddInt_ ) )
		<< ( Rule() << "int2" << Text( )
				<< ( SRD::Times( 2 ) << Word( ) )
				<< EnterContext( "int" )
				<< OnEnter( EnterInt2_ )
				<< OnExit( AddInt_ ) )
		<< ( Rule() << "int3" << Text( )
				<< ( SRD::Times( 3 ) << Word( ) )
				<< EnterContext( "int" )
				<< OnEnter( EnterInt3_ )
				<< OnExit( AddInt_ ) )
		<< ( Rule() << "int4" << Text( )
				<< ( SRD::Times( 4 ) << Word( ) )
				<< EnterContext( "int" )
				<< OnEnter( EnterInt4_ )
				<< OnExit( AddInt_ ) )
	;

	// Floating point control parameters
	defs.context( "float" )
		<< ( Rule() << "slider" << FloatSetSlider_ )
		<< ( Rule() << "min" << Numeric() << FloatSetMin_ )
		<< ( Rule() << "max" << Numeric() << FloatSetMax_ )
		<< ( Rule() << "step" << Numeric() << FloatSetStep_ )
		<< ( Rule() << "power" << Numeric() << FloatSetPower_ )
		<< ( Rule() << "decimals" << Integer() << FloatSetDecimals_ )
	;

	// Integer control parameters
	defs.context( "int" )
		<< ( Rule() << "slider" << IntSetSlider_ )
		<< ( Rule() << "min" << Int32() << IntSetMin_ )
		<< ( Rule() << "max" << Int32() << IntSetMax_ )
		<< ( Rule() << "step" << Numeric() << IntSetStep_ )
	;

	return T_SRDParserConfig{ defs };
}


/*= A_Float ====================================================================*/

bool A_Float::setMin(
		const float v ) noexcept
{
	M_SETOPT_( min_ , v );
}

bool A_Float::setMax(
		const float v ) noexcept
{
	M_SETOPT_( max_ , v );
}

bool A_Float::setStep(
		const float v ) noexcept
{
	assert( v > 0 );
	M_SETOPT_( step_ , v );
}

bool A_Float::setDecimals(
		const uint32_t n ) noexcept
{
	assert( n >= 0 && n <= 20 );
	if ( decimals_ ) {
		return false;
	}

	T_StringBuilder sb;
	sb << "%." << n << 'f' << '\0';
	assert( sb.size( ) < 12 );
	decimals_.setNew( );
	for ( auto i = 0u ; i < sb.size( ) ; i ++ ) {
		decimals_->add( sb.data( )[ i ] );
	}

	return true;
}

bool A_Float::setPower(
		const float v ) noexcept
{
	assert( v != 0 );
	M_SETOPT_( power_ , v );
}

void A_Float::setSlider( ) noexcept
{
	slider_ = true;
}


/*= T_Float ====================================================================*/

T_Float::T_Float(
		T_String const& input ,
		T_String const& title ) noexcept
	: A_Float( "float" , title )
{
	inputs_.add( input );
}

void T_Float::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	float v[ 1 ] = {
		Globals::Sync( ).inputs( )[ inputPos_[ 0 ] ]
	};

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderFloat( label , v , min( ) , max( ) , decimals( ) , power( ) )
			: DragFloat( label , v , step( ) , min( ) , max( ) , decimals( ) , power( ) ) );
	if ( changed ) {
		Globals::Sync( ).inputs( )[ inputPos_[ 0 ] ] = v[ 0 ];
	}
}


/*= T_Float2 ===================================================================*/

T_Float2::T_Float2(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& title ) noexcept
	: A_Float( "float2" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
}

void T_Float2::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	float v[ 2 ];
	for ( auto i = 0 ; i < 2 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderFloat2( label , v , min( ) , max( ) , decimals( ) , power( ) )
			: DragFloat2( label , v , step( ) , min( ) , max( ) , decimals( ) , power( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 2 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}


/*= T_Float3 ===================================================================*/

T_Float3::T_Float3(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& input2 ,
		T_String const& title ) noexcept
	: A_Float( "float3" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
	inputs_.add( input2 );
}

void T_Float3::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	float v[ 3 ];
	for ( auto i = 0 ; i < 3 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderFloat3( label , v , min( ) , max( ) , decimals( ) , power( ) )
			: DragFloat3( label , v , step( ) , min( ) , max( ) , decimals( ) , power( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 3 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}


/*= T_Float4 ===================================================================*/

T_Float4::T_Float4(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& input2 ,
		T_String const& input3 ,
		T_String const& title ) noexcept
	: A_Float( "float4" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
	inputs_.add( input2 );
	inputs_.add( input3 );
}

void T_Float4::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	float v[ 4 ];
	for ( auto i = 0 ; i < 4 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderFloat4( label , v , min( ) , max( ) , decimals( ) , power( ) )
			: DragFloat4( label , v , step( ) , min( ) , max( ) , decimals( ) , power( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 4 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}


/*= A_Integer ==================================================================*/

bool A_Integer::setMin(
		const int32_t v ) noexcept
{
	M_SETOPT_( min_ , v );
}

bool A_Integer::setMax(
		const int32_t v ) noexcept
{
	M_SETOPT_( max_ , v );
}

bool A_Integer::setStep(
		const float v ) noexcept
{
	assert( v > 0 );
	M_SETOPT_( step_ , v );
}

void A_Integer::setSlider( ) noexcept
{
	slider_ = true;
}


/*= T_Integer ==================================================================*/

T_Integer::T_Integer(
		T_String const& input ,
		T_String const& title ) noexcept
	: A_Integer( "int" , title )
{
	inputs_.add( input );
}

void T_Integer::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	int32_t v[ 1 ] = {
		int32_t( Globals::Sync( ).inputs( )[ inputPos_[ 0 ] ] )
	};

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderInt( label , v , min( ) , max( ) )
			: DragInt( label , v , step( ) , min( ) , max( ) ) );
	if ( changed ) {
		Globals::Sync( ).inputs( )[ inputPos_[ 0 ] ] = v[ 0 ];
	}
}


/*= T_Integer2 =================================================================*/

T_Integer2::T_Integer2(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& title ) noexcept
	: A_Integer( "int2" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
}

void T_Integer2::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	int32_t v[ 2 ];
	for ( auto i = 0 ; i < 2 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderInt2( label , v , min( ) , max( ) )
			: DragInt2( label , v , step( ) , min( ) , max( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 2 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}


/*= T_Integer3 =================================================================*/

T_Integer3::T_Integer3(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& input2 ,
		T_String const& title ) noexcept
	: A_Integer( "int3" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
	inputs_.add( input2 );
}

void T_Integer3::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	int32_t v[ 3 ];
	for ( auto i = 0 ; i < 3 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderInt3( label , v , min( ) , max( ) )
			: DragInt3( label , v , step( ) , min( ) , max( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 3 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}


/*= T_Integer4 =================================================================*/

T_Integer4::T_Integer4(
		T_String const& input0 ,
		T_String const& input1 ,
		T_String const& input2 ,
		T_String const& input3 ,
		T_String const& title ) noexcept
	: A_Integer( "int4" , title )
{
	inputs_.add( input0 );
	inputs_.add( input1 );
	inputs_.add( input2 );
	inputs_.add( input3 );
}

void T_Integer4::makeEditWidgets(
		uint32_t& counter ,
		T_StringBuilder& sb ) noexcept
{
	using namespace ImGui;
	auto& sinp( Globals::Sync( ).inputs( ) );
	int32_t v[ 4 ];
	for ( auto i = 0 ; i < 4 ; i ++ ) {
		v[ i ] = sinp[ inputPos_[ i ] ];
	}

	char const* const label( buildLabel( counter , sb ) );
	const bool changed( slider( )
			? SliderInt4( label , v , min( ) , max( ) )
			: DragInt4( label , v , step( ) , min( ) , max( ) ) );
	if ( changed ) {
		for ( auto i = 0 ; i < 4 ; i ++ ) {
			sinp[ inputPos_[ i ] ] = v[ i ];
		}
	}
}