#include <iostream>

#include <array>

#include <vector>

#include <hidapi/hidapi.h>

class HIDException {

private:

	std::wstring message;

public:

	HIDException(std::wstring message) : message(message) {

	}

	virtual ~HIDException() {

	}

	const std::wstring getMessage() const {

		return message;

	}

};

class HIDDevice {

private:

	hid_device* handle;

public:

	HIDDevice(unsigned short vendorId, unsigned short productId, const wchar_t *serialNumber) {

		int initError = hid_init(); // TODO: move to HIDContext class?

		if (initError) throw HIDException(L"Unable to init HID API.");

		handle = hid_open(vendorId, productId, serialNumber);

		if (handle == nullptr) throw HIDException(L"Unable to open HID device. Are you root? Is mouse present?");

	}

	virtual ~HIDDevice() {

		hid_close(handle);

		hid_exit(); // TODO: move to HIDContext class?

	}

	const std::wstring getManufacturerName() const {

		std::array<wchar_t, 200 > buffer;

		int error = hid_get_manufacturer_string(handle, buffer.data(), buffer.size());

		if (error) throw HIDException(L"Unable to get manufacturer name.");

		return buffer.data();

	}

	const std::wstring getProductName() const {

		std::array<wchar_t, 200 > buffer;

		int error = hid_get_product_string(handle, buffer.data(), buffer.size());

		if (error) throw HIDException(L"Unable to get product name.");

		return buffer.data();

	}

	const std::wstring getSerialNumber() const {

		std::array<wchar_t, 200 > buffer;

		int error = hid_get_serial_number_string(handle, buffer.data(), buffer.size());

		if (error) throw HIDException(L"Unable to get serial number.");

		return buffer.data();

	}

	void sendFeatureReport(std::vector<unsigned char> data) {

		int written = hid_send_feature_report(handle, data.data(), data.size());

		if (written < 0) throw HIDException(L"Unable to send feature report.");

	}

};

int main(int argc, char** argv) {

	try {

		std::wcout << L"cadMousePro" << std::endl;

		HIDDevice mouse(0x256f, 0xc652, nullptr);

		std::wcout << L"mouse opened" << std::endl;

		std::wcout << L"manufacturer:  " << mouse.getManufacturerName() << std::endl;

		std::wcout << L"product:       " << mouse.getProductName() << std::endl;

		// std::wcout << L"serial number: " << mouse.getSerialNumber() << std::endl; // throws exception

		std::vector<unsigned char> enableFreeWheel{0x10, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x0a, 0x0b, 0x0c, 0x0c, 0x0e, 0x0d, 0x2f, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x01};

		std::vector<unsigned char> disableFreeWheel{0x10, 0x00, 0x1c, 0x00, 0x01, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x0a, 0x0b, 0x0c, 0x0c, 0x0e, 0x0d, 0x2f, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x01};

		// mouse.sendFeatureReport(enableFreeWheel);

		mouse.sendFeatureReport(disableFreeWheel);

		// TODO: enable acceleration

		// TODO: enable lift-off detection

		// TODO: sensof polling rate – frequency

		// TODO: wheel scrolling size – lines, page

	} catch (const HIDException& e) {

		std::wcout << L"HIDException: " << e.getMessage() << std::endl;

	}

}