#include <IRremote.hpp>

const int RX_PIN = 2;
const int RED_PIN = 10;
const int GRN_PIN = 9;
const int BLU_PIN = 6;
/*
  const byte KEY_CODES[] = {
  see https://docs.wokwi.com/parts/wokwi-ir-remote
  162, 226, 34, 2, 194,
  224, 168, 144, 152, 176,
  104, 48, 24, 122, 16,
  56, 90, 66, 74, 82
  };
*/

bool isAllOn = false;
bool isRedOn = false;
bool isGrnOn = false;
bool isBluOn = false;
int lightVal = 250;

void lightLeds(int command)  {
  Serial.println(command); // for test
  switch (command)  {
    case 162: // power
      isAllOn = !isAllOn;
      break;
    case 48:  // 1
      isRedOn = !isRedOn;
      break;
    case 24:  // 2
      isGrnOn = !isGrnOn;
      break;
    case 122: // 3
      isBluOn = !isBluOn;
      break;
    case 2:   // +
      lightVal += 50;
      if (lightVal >= 250) lightVal = 250;
      break;
    case 152: // -
      lightVal -= 50;
      if (lightVal <= 0) lightVal = 0;
      break;
    default:
      break;
  }
  if (isRedOn && isAllOn) {
    analogWrite(RED_PIN, lightVal);
  } else {
    analogWrite(RED_PIN, 0);
  }
  if (isGrnOn && isAllOn) {
    analogWrite(GRN_PIN, lightVal);
  } else {
    analogWrite(GRN_PIN, 0);
  }
  if (isBluOn && isAllOn) {
    analogWrite(BLU_PIN, lightVal);
  } else {
    analogWrite(BLU_PIN, 0);
  }
}

void setup() {
  Serial.begin(115200);
  IrReceiver.begin(RX_PIN, ENABLE_LED_FEEDBACK);
  pinMode(RED_PIN, OUTPUT);
  pinMode(GRN_PIN, OUTPUT);
  pinMode(BLU_PIN, OUTPUT);
}

void loop() {
  if (IrReceiver.decode()) {      // received IR
    int command = IrReceiver.decodedIRData.command;
    lightLeds(command);
    IrReceiver.resume();          // prepare for the next IR
  }
}