#pragma once
#include "sync.hh"
#include "undo.hh"


/*= GENERAL STRUCTURE FOR SYNC EDITOR UNDOS ====================================*/

class T_UndoSyncChanges : public A_UndoAction
{
    protected:
	struct T_CurveChange_
	{
		T_String inputId;
		T_Optional< T_SyncCurve > before;
		T_Optional< T_SyncCurve > after;

		explicit T_CurveChange_( T_SyncCurve before ) noexcept
			: inputId{ before.name } ,
				before{ std::move( before ) } ,
				after{ }
		{}

		T_CurveChange_( const bool ,
				T_SyncCurve after ) noexcept
			: inputId{ after.name } , before{ } ,
				after{ std::move( after ) }
		{}

		T_CurveChange_( T_SyncCurve before ,
				T_SyncCurve after ) noexcept
			: inputId{ before.name } ,
				before{ std::move( before ) } ,
				after{ std::move( after ) }
		{}
	};
	T_AutoArray< T_CurveChange_ , 4 , 32 > changes_;

    public:
	T_UndoSyncChanges( ) noexcept = default;
	DEF_MOVE( T_UndoSyncChanges );
	NO_COPY( T_UndoSyncChanges );

	void undo( ) const noexcept override;
	void redo( ) const noexcept override;

	T_UndoSyncChanges& curveCreation(
			T_SyncCurve curve ) noexcept;
	T_UndoSyncChanges& curveDeletion(
			T_SyncCurve curve ) noexcept;
	T_UndoSyncChanges& curveReplacement(
			T_SyncCurve before ,
			T_SyncCurve after ) noexcept;
};