/*
* @Author: namidame
* @Description: A Heatmap Generation plugin based on the old HeatMapActor, Supports Heightmap, Texture Coordinate Points And Geographic Location Data.
* @Date: 2024/07/27
*/
#pragma once

#include "CoreMinimal.h"
#include "Engine/DataTable.h"
#include "DynamicHeatmapDefs.generated.h"
/*
 * Defines which method is used to generate the heatmap
 * 
 * GrayScaleTexture: Use a gray scale value texture to create a heatmap.
 * TextureCoordPoint: Use a map with texture coordinate point for keys and heat value(0 to 1) to create a heatmap.
 * GeographicData: Use a map with geographic point (longitude, latitude) for keys and heat value(0 to 1) to create a heatmap.
 * JsonFileData: Use a json file with geographic point (longitude, latitude) and heat value(0 to 1) to create a heatmap.
 * HgtFileData: Use a hgt file (a DEM data format file) to create a heatmap.
 */
UENUM(BlueprintType)
enum class EDynamicHeatmapType : uint8
{
	NONE,
	GrayScaleTexture,
	TextureCoordPoint,
	GeographicData,
	JsonFileData,
	HgtFileData
};

/*
 * Configuration of field names and types of a json content. 
 */
USTRUCT(BlueprintType)
struct FJsonConfig
{
	GENERATED_BODY()

	FJsonConfig()
	: LngName("lng")
	, LatName("lat")
	, ValueName("value")
	, bStringCoord(false)
	, bStringValue(false)
	{};
	FJsonConfig(const FString& lng, const FString& lat, const FString& vName, bool bStringCoordValue, bool bStringValueValue)
		: LngName(lng)
		, LatName(lat)
		, ValueName(vName)
		, bStringCoord(bStringCoordValue)
		, bStringValue(bStringValueValue)
	{
		
	};
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Json)
	FString LngName;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Json)
	FString LatName;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Json)
	FString ValueName;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, meta=(DisplayName="Is String Coordinate"), Category=Json)
	bool bStringCoord;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, meta=(DisplayName="Is String Heat Value"), Category=Json)
	bool bStringValue;
};

/*
 * Defines fields in heatmap data table.
 */
USTRUCT(BlueprintType)
struct FHeatmapData : public FTableRowBase
{
	GENERATED_BODY()

	FHeatmapData()
		: Longitude(0)
		, Latitude(0)
		, HeatValue(0)
	{};
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Heatmap)
	double Longitude;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Heatmap)
	double Latitude;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Heatmap)
	float HeatValue;
};

/*
 * Defines data format in TextureCoordPoint method. 
 */
USTRUCT(BlueprintType)
struct FTextureCoordPointData : public FTableRowBase
{
	GENERATED_BODY()

	FTextureCoordPointData()
		: TextureCoord(FVector2D::Zero())
		, HeatValue(0)
	{};
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Heatmap)
	FVector2D TextureCoord;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Heatmap)
	float HeatValue;
};