// Copyright 2022 Danyang Chen https://github.com/DAN-AND-DNA

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "Runtime/Launch/Resources/Version.h"
#include "Struct2JsonLibrary.generated.h"

UCLASS()
class UWrapperStructProperty : public UObject {
	GENERATED_BODY()
public:
	FStructProperty* InterStruct;
};

UCLASS()
class EASYSTRUCT2JSON_API UStruct2JsonLibaray : public UBlueprintFunctionLibrary {
	GENERATED_BODY()
public:
	
	UFUNCTION(BlueprintCallable, Category = "Struct2Json", CustomThunk, meta = (CustomStructureParam = "OutStruct"))
	static UPARAM(DisplayName = "Ok") bool Json2Struct(const FString& JsonStr, const int32& OutStruct);

	DECLARE_FUNCTION(execJson2Struct) {
#if  (ENGINE_MAJOR_VERSION == 4 && ENGINE_MINOR_VERSION > 26 || ENGINE_MAJOR_VERSION > 4)

		P_GET_PROPERTY(FStrProperty, JsonStr);
		
		Stack.StepCompiledIn<FStructProperty>(NULL);
		FStructProperty* StructProperty = ExactCastField<FStructProperty>(Stack.MostRecentProperty);
		void* StructPropertyPtr = Stack.MostRecentPropertyAddress;
		P_FINISH;

		*(bool*) RESULT_PARAM = JsonStr2Struct(StructProperty, StructPropertyPtr, JsonStr);
#else
		*(bool*) RESULT_PARAM = false;
#endif
	}



	UFUNCTION(BlueprintCallable, Category = "Struct2Json", CustomThunk, meta = (CustomStructureParam = "InStruct"))
	static UPARAM(DisplayName = "Ok") bool Struct2Json(const int32& InStruct,  FString& JsonStr, bool bPretty = false, bool bOmitEmpty = true);

	DECLARE_FUNCTION(execStruct2Json) {
#if (ENGINE_MAJOR_VERSION == 4 && ENGINE_MINOR_VERSION > 26 || ENGINE_MAJOR_VERSION > 4)

		Stack.StepCompiledIn<FStructProperty>(NULL);
		FStructProperty* StructProperty = ExactCastField<FStructProperty>(Stack.MostRecentProperty);
		void* StructPropertyPtr = Stack.MostRecentPropertyAddress;

		P_GET_PROPERTY_REF(FStrProperty, JsonStr);
		P_GET_PROPERTY(FBoolProperty, bPretty);
		P_GET_PROPERTY(FBoolProperty, bOmitEmpty);
		P_FINISH;

		*(bool*)RESULT_PARAM = Struct2JsonStr(StructProperty, StructPropertyPtr, JsonStr, bPretty, bOmitEmpty);
#else
		*(bool*)RESULT_PARAM = false;
#endif
	}


	static bool JsonStr2Struct(FStructProperty* StructProperty, void* StructPtr, const FString& InJsonStr);
	static bool Struct2JsonStr(FStructProperty* StructProperty, void* StructPtr, FString& OutJsonStr, bool bPretty, bool bOmitEmpty);

};