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

#pragma once

#include "CoreMinimal.h"
#include "ProjectFish/DataAsset/BagConfigAsset.h"

DECLARE_DELEGATE_TwoParams(FOnGridCellClicked, int32, int32);
/**
 * 
 */
class PROJECTFISHEDITOR_API SBagConfigGridWidget : public SCompoundWidget
{
public:
	SLATE_BEGIN_ARGS(SBagConfigGridWidget) {}
	SLATE_ARGUMENT(UBagConfigAsset*, BagConfig)
	SLATE_EVENT(FOnGridCellClicked, OnGridCellClicked)
SLATE_END_ARGS()

	void Construct(const FArguments& InArgs);

	// // 设置背包类
	// void UpdateBagConfig(UBagConfigAsset* InBagClass);
	//
	// // 设置预览技能（用于显示放置预览）
	// void SetPreviewSkill(USkillAsset* InPreviewSkill, int32 PreviewX, int32 PreviewY);
	//
	// // 清除预览
	// void ClearPreview();
	//
	// 刷新显示
	void RefreshGrid();

protected:
	// Slate重写函数
	virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
	virtual FReply OnMouseMove(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
	virtual int32 OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect,
	 	FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
	
	virtual FVector2D ComputeDesiredSize(float) const override;

private:
	// 背包类引用
	TWeakObjectPtr<UBagConfigAsset> BagConfig;

	// 回调委托
	FOnGridCellClicked OnGridCellClicked;

	// 预览数据
	TWeakObjectPtr<USkillAsset> PreviewSkill;
	int32 PreviewX;
	int32 PreviewY;

	// UI参数
	static const float CellSize;
	static const float CellSpacing;

	// 工具函数
	FVector2D GetCellPosition(int32 X, int32 Y) const;
	FVector2D GetGridCellFromPosition(const FVector2D& Position) const;
	bool IsValidGridPosition(int32 X, int32 Y) const;
	FLinearColor GetCellColor(int32 X, int32 Y) const;

};

inline FVector2D SBagConfigGridWidget::GetCellPosition(int32 X, int32 Y) const
{
	return FVector2D(
	   X * (CellSize + CellSpacing),
	   Y * (CellSize + CellSpacing)
   );
}