// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "SCompoundWidget.h"
#include "Singleton/MidiSequencer.h"

class FMidiMessageSequence;
class FPluginHost;
class FPattern;

class ARONA_API SPatternThumbnail : public SCompoundWidget
{
public:
	void SetPattern(FPattern* InPattern) { OnPatternChanged(CurrentPattern, InPattern); CurrentPattern = InPattern; }
	FPattern* GetPattern() const { return CurrentPattern; }
	virtual void Redraw() {}

	TRange<MidiTick> MidiTickRange;
protected:
	virtual void OnPatternChanged(FPattern* OldPattern, FPattern* NewPattern) {}
private:
	FPattern* CurrentPattern = nullptr;
};

class ARONA_API SNullPatternThumbnail : public SPatternThumbnail
{
public:
	SLATE_BEGIN_ARGS(SNullPatternThumbnail)
	{
	}

	SLATE_END_ARGS()

	/** Constructs this widget with InArgs */
	void Construct(const FArguments& InArgs, FText InText);

	static TSharedRef<SPatternThumbnail> Create(FText InText);
};

/**
 * 
 */
class ARONA_API SAutoPatternThumbnail : public SCompoundWidget
{
public:
	SLATE_BEGIN_ARGS(SAutoPatternThumbnail)
	{
	}

	SLATE_END_ARGS()

	/** Constructs this widget with InArgs */
	void Construct(const FArguments& InArgs, FPattern* InPattern);

	void SetPattern(FPattern* InPattern);
	FPattern* GetPattern() const { return Pattern; }

	virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
	virtual FVector2D ComputeDesiredSize(float LayoutScaleMultiplier) const override;
	virtual void Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime) override;
	FPatternDelegate OnPatternClicked;
private:
	TSharedPtr<SPatternThumbnail> CreateThumbnail(FPattern* InPattern);
	
	TSharedPtr<SPatternThumbnail> Thumbnail;
	FPattern* Pattern = nullptr;
	bool bNeedRedraw = true;
};