#define BTN_ON_OFF 6
#define BTN_SWITCH 7

#define LED1 13
#define LED2 12
#define LED3 11

#define POT_PIN A0
#define LDR_PIN A1

bool ledOn = false;
bool usePot = true; // true — потенциометр, false — датчик света
bool lastOnOffState = HIGH;
bool lastSwitchState = HIGH;
unsigned long lastDebounceOnOff = 0;
unsigned long lastDebounceSwitch = 0;
const unsigned long debounceDelay = 50;

void setup() {
  pinMode(BTN_ON_OFF, INPUT_PULLUP);
  pinMode(BTN_SWITCH, INPUT_PULLUP);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
}

void loop() {
  // ======== Кнопка ВКЛ/ВЫКЛ ========
  int readingOnOff = digitalRead(BTN_ON_OFF);
  if (readingOnOff != lastOnOffState) lastDebounceOnOff = millis();
  if ((millis() - lastDebounceOnOff) > debounceDelay) {
    if (readingOnOff == LOW && lastOnOffState == HIGH) {
      ledOn = !ledOn;
      if (!ledOn) turnOffLeds();
    }
  }
  lastOnOffState = readingOnOff;

  // ======== Кнопка СМЕНЫ РЕЖИМА ========
  int readingSwitch = digitalRead(BTN_SWITCH);
  if (readingSwitch != lastSwitchState) lastDebounceSwitch = millis();
  if ((millis() - lastDebounceSwitch) > debounceDelay) {
    if (readingSwitch == LOW && lastSwitchState == HIGH) {
      usePot = !usePot;
    }
  }
  lastSwitchState = readingSwitch;

  // ======== Управление яркостью ========
  if (ledOn) {
    int sensorValue = usePot ? analogRead(POT_PIN) : analogRead(LDR_PIN);
    // 0–4095 для STM32
    int level = map(sensorValue, 0, 4095, 0, 3);
    setBrightness(level);
  }
}

void setBrightness(int level) {
  // Грубая имитация яркости: 0–3
  digitalWrite(LED1, level > 0 ? HIGH : LOW);
  digitalWrite(LED2, level > 1 ? HIGH : LOW);
  digitalWrite(LED3, level > 2 ? HIGH : LOW);
}

void turnOffLeds() {
  digitalWrite(LED1, LOW);
  digitalWrite(LED2, LOW);
  digitalWrite(LED3, LOW);
}