#include "CoreMinimal.h"
#include "engineutil.hpp"

namespace engineutil {

void init_wrapper(EngineWrapper* w) {
	void* DLL = FPlatformProcess::GetDllHandle(TEXT("c:\\Luprex\\build\\visual\\luprexlib.dll"));
	if (DLL != nullptr) {
		using InitFn = void (*)(EngineWrapper*);
		InitFn init = (InitFn)FPlatformProcess::GetDllExport(DLL, TEXT("init_engine_wrapper"));
		if (init != nullptr) {
			init(w);
		}
	}
}

static TArray<FString> dprints;

void DPrint(const FString& fs) {
	dprints.Emplace(fs);
}

void DPrint(const char* msg) {
	dprints.Emplace(msg);
}

void DPrintHook(const char* msg, size_t len) {
	dprints.Emplace(len, (const UTF8CHAR*)msg);
}

const TArray<FString>& DPrintGetStored() {
	return dprints;
}

void DPrintClearStored() {
	dprints.Reset();
}

void ConsoleOutput::Append(const FString& text) {
	if (!text.IsEmpty()) {
		Content += text;
		Truncate();
		Dirty = true;
	}
}

void ConsoleOutput::AppendLine(const FString& text) {
	int csize = Content.Len();
	if ((csize > 0) && (Content[csize - 1] != '\n')) {
		Content += TEXT("\n");
	}
	Content += text;
	Content += TEXT("\n");
	Truncate();
	Dirty = true;
}

void ConsoleOutput::Truncate() {
	int lines = 50;
	int csize = Content.Len();
	int total = 0;
	for (int i = csize - 1; i >= 0; i--) {
		if (Content[i] == '\n') {
			total += 1;
			if (total == lines) {
				Content = Content.RightChop(i + 1);
				return;
			}
		}
	}
}


} // namespace engineutil