#include "Usb.hpp"

#include <iostream>
#include <iomanip>
#include <optional>
#include <spdlog/spdlog.h>

namespace ptprnt::driver {

Usb::Usb() {
    spdlog::debug("Usb constructing");
    libusb_init(NULL);
}
Usb::~Usb() {
    spdlog::debug("Usb destructing");
}

std::optional<std::vector<UsbDevice>> Usb::getDevices() {
    libusb_device ** devs;
    libusb_device *dev;
    struct libusb_device_descriptor desc;
    int r,i=0;

    mDevices.clear();

    libusb_get_device_list(NULL, &devs);

    while ((dev=devs[i++]) != NULL) {
        UsbDevice newDev;

		if ((r=libusb_get_device_descriptor(dev, &desc)) < 0) {
			spdlog::error("failed to open device");
			libusb_free_device_list(devs, 1);
            return std::nullopt;
		}

        newDev.vendorId = desc.idVendor;
        newDev.productId = desc.idProduct;

        mDevices.push_back(newDev);
    }

    return mDevices;
}

}  // namespace ptprnt::driver