#ifndef RUNNER_READER_SERVICE_H_
#define RUNNER_READER_SERVICE_H_

#include <iostream>
#include <vector>
#include <string>
#include <functional>
#include <thread>
#include <atomic>
#include <chrono>
extern "C"
{
#include "SWHidApi.h"
}

// Define data callback type to notify UI of received tag data
typedef std::function<void(const std::string &)> DataCallback;

// Service for handling USB scanning functionality
class ReaderService
{
public:
  // Get singleton instance
  static ReaderService *GetInstance();

  // Scan USB devices and return list of device names
  std::vector<std::string> ScanUsb();

  // Connect to specified USB device by index
  bool Connect(int deviceIndex);

  // Disconnect
  void Disconnect();

  // Start reading in answer mode
  bool StartRead();

  // Stop reading in answer mode
  void StopRead();

  void AnswerMode();

  // Set data callback function to notify UI of received data
  void SetDataCallback(DataCallback callback) { data_callback_ = callback; }

  // Get device system information and return it as a string
  std::string GetDeviceInfo();

  // Get current power level (returns true on success)
  bool GetPower(unsigned char& power);

  // Set power level (returns true on success)
  bool SetPower(unsigned char power);

private:
  ReaderService() = default;
  ~ReaderService();

  // Disable copy constructor and assignment operator
  ReaderService(const ReaderService &) = delete;
  ReaderService &operator=(const ReaderService &) = delete;

  // Static callback function for receiving device data
  static void DeviceCallback(int msg, int param1, unsigned char *param2, int param3, unsigned char *param4);

  // Function to run the timer loop for periodically calling AnswerMode
  void RunTimer();

  // Member variables
  bool connected_ = false;
  bool reading_ = false;
  std::atomic<bool> timer_running_{false};
  std::unique_ptr<std::thread> timer_thread_;
  DataCallback data_callback_;
};

#endif // RUNNER_READER_SERVICE_H_