#include "node.h"
using namespace Napi;

#define ADD_PROC_FUNCTION(name) obj.Set(#name, Napi::Function::New<name>(env));
#define DEFINE_FUNCTION(name) Napi::Value name(Napi::CallbackInfo const &info)

DEFINE_FUNCTION(GetTextSize)
{
	auto text = info[0].As<Napi::String>().Utf8Value();
	auto fontFace = info[1].As<Napi::Number>().Int32Value();
	auto fontScale = info[2].As<Napi::Number>().DoubleValue();
	auto thickness = info[3].As<Napi::Number>().Int32Value();
	int baseLine;
	auto size = cv::getTextSize(text, fontFace, fontScale, thickness, &baseLine);
	auto res = Object::New(info.Env());
	res.Set("width", Number::New(info.Env(), size.width));
	res.Set("height", Number::New(info.Env(), size.height));
	res.Set("baseLine", Number::New(info.Env(), baseLine));
	return res;
}

DEFINE_FUNCTION(GetFontScaleFromHeight)
{
	auto fontFace = info[0].As<Napi::Number>().Int32Value();
	auto pixelHeight = info[1].As<Napi::Number>().Int32Value();
	auto thickness = info[2].As<Napi::Number>().Int32Value();
	return Number::New(info.Env(), cv::getFontScaleFromHeight(fontFace, pixelHeight, thickness));
}

void InitProcAPI(Napi::Env env, Napi::Object exports)
{
	auto obj = Object::New(env);
	ADD_PROC_FUNCTION(GetTextSize);
	exports.Set("util", obj);
}