/*
 * InputFactory.h
 *
 *  Created on: Apr 5, 2018
 *      Author: Andreas Schneider, Johannes Wendel, Jonas Zeunert, Rafael Vinci, Dr. Franca Rupprecht
 */

#ifndef INPUTFACTORY_H_
#define INPUTFACTORY_H_

#include <fstream>

#include "Detector.h"

#include "../utilities/InputGPIOInterface.h"
#include "InputEventNotifier.h"

#include "../lib/json/json.hpp"

using namespace nlohmann;

namespace Input
{
class InputFactory
{

public:
  static std::shared_ptr<Detector> get_detector(std::string& input_config_path, std::string& matrix_config_path)
  {
    // todo this in gpiointerface
    std::ifstream input_config_stream(input_config_path);
    json input_config;
    input_config << input_config_stream;

    std::ifstream matrix_config_stream(input_config_path);
    json matrix_config;
    matrix_config << matrix_config_stream;

    auto input_gpio_interface = new InputGPIOInterface();
    auto input_notifier = new InputEventNotifier();

    std::map<char, InputEvent> input_events = create_input_events(matrix_config);

    return std::shared_ptr<Detector*>(new Detector(input_gpio_interface, input_events, input_notifier));
  }

private:
  static std::map<char, InputEvent> create_input_events(json matrix_config)
  {
    std::map<char, InputEvent> input_events;

    for(auto& key : matrix_config)
    {
      InputEvent event(matrix_config[key], key);
      input_events.emplace(key, event);
    }

    return input_events;
  }

};
}

#endif /* INPUTFACTORY_H_ */