#include "greeter.h"

using namespace Napi;

Greeter::Greeter(const Napi::CallbackInfo &info)
    : ObjectWrap(info)
{
    Napi::Env env = info.Env();

    if (info.Length() < 1)
    {
        Napi::TypeError::New(env, "Wrong number of arguments")
            .ThrowAsJavaScriptException();
        return;
    }

    if (!info[0].IsString())
    {
        Napi::TypeError::New(env, "You need to name yourself")
            .ThrowAsJavaScriptException();
        return;
    }

    this->_greeterName = info[0].As<Napi::String>().Utf8Value();
}

Napi::Value Greeter::Greet(const Napi::CallbackInfo &info)
{
    Napi::Env env = info.Env();

    if (info.Length() < 1)
    {
        Napi::TypeError::New(env, "Wrong number of arguments")
            .ThrowAsJavaScriptException();
        return env.Null();
    }

    if (!info[0].IsString())
    {
        Napi::TypeError::New(env, "You need to introduce yourself to greet")
            .ThrowAsJavaScriptException();
        return env.Null();
    }

    Napi::String name = info[0].As<Napi::String>();

    printf("Hello %s\n", name.Utf8Value().c_str());
    printf("I am %s\n", this->_greeterName.c_str());

    return Napi::String::New(env, this->_greeterName);
}

Napi::Function Greeter::GetClass(Napi::Env env)
{
    return DefineClass(
        env,
        "Greeter",
        {
            Greeter::InstanceMethod("greet", &Greeter::Greet),
        });
}