#include <Button_SL.hpp>
#include <RotaryEncoder.h>

constexpr uint8_t PIN_BTN {4};      // SW on rotary encoder
constexpr uint8_t PIN_IN1 {2};      // DT   ---- " ----
constexpr uint8_t PIN_IN2 {3};      // CLK  ---- " ----


constexpr int8_t Rotation_360_DEGREE {20};

RotaryEncoder encoder{PIN_IN1, PIN_IN2, RotaryEncoder::LatchMode::FOUR3};
Btn::ButtonSL btn {PIN_BTN};

//////////////////////////////////////////////////////////////////////////////
/// @brief The encoder signals are evaluated
///
/// @param enc Reference on encoder object
/// @param value  Reference encoder value
/// @return true  if the an encoder signal was evaluated
/// @return false if no encoder signal was evaluated
//////////////////////////////////////////////////////////////////////////////
bool askEncoder(RotaryEncoder &enc, int8_t &value) {
  bool flag{true};
  enc.tick();
  switch (enc.getDirection()) {
    case RotaryEncoder::Direction::NOROTATION: flag = false; break;
    case RotaryEncoder::Direction::CLOCKWISE: ++value; break;
    case RotaryEncoder::Direction::COUNTERCLOCKWISE: --value; break;
  }
  return flag;
}

//////////////////////////////////////////////////////////////////////////////
/// @brief Initialization part of the main program
///
//////////////////////////////////////////////////////////////////////////////
void setup(void) {
  Serial.begin(115200);
  Serial.println(F("Start..."));

  btn.begin();
  btn.releaseOn();   // Release after "long" Press (default = 1000ms);
  btn.setDebounceTime_ms(100);
}

//////////////////////////////////////////////////////////////////////////////
/// @brief main program
///
//////////////////////////////////////////////////////////////////////////////
void loop() {
  static int8_t encValue {0};
  static int fullRotations {0};
  
  // Encoder abfragen
  if (askEncoder(encoder, encValue )) {
    if (encValue == 20 || encValue == -20) {
      fullRotations = (encValue < 0) ? fullRotations - 1 : fullRotations + 1;
      encValue = 0;
    } 
    Serial.print(encValue); Serial.print(" ");Serial.println(fullRotations);
  }

  // Tasterstatus ermitteln
  if (btn.tick() != Btn::ButtonState::notPressed) {
    Serial.println(F("Taster gedrückt"));
  }
}