#include <Arduino.h>
#include <SoftwareSerial.h>

#define RED_LED_PIN 11
#define GREEN_LED_PIN 10
#define BLUE_LED_PIN 9
#define POTENTIOMETER_PIN A0

SoftwareSerial uart(2, 3); 

void setup() {
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
  pinMode(BLUE_LED_PIN, OUTPUT);
  uart.begin(9600);
}

void loop() {
  if (uart.available() > 0) {
    String command = uart.readStringUntil(' ');
    
    if (command == "red") {
      String state = uart.readString();
      if (state == "on") {
        digitalWrite(RED_LED_PIN, HIGH);
      } else if (state == "off") {
        digitalWrite(RED_LED_PIN, LOW);
      }
    } else if (command == "green") {
      String state = uart.readString();
      if (state == "on") {
        digitalWrite(GREEN_LED_PIN, HIGH);
      } else if (state == "off") {
        digitalWrite(GREEN_LED_PIN, LOW);
      }
    } else if (command == "blue") {
      String state = uart.readString();
      if (state == "on") {
        digitalWrite(BLUE_LED_PIN, HIGH);
      } else if (state == "off") {
        digitalWrite(BLUE_LED_PIN, LOW);
      }
    }
  }
  
  int brightness = analogRead(POTENTIOMETER_PIN) / 4; 
  analogWrite(RED_LED_PIN, brightness);
  analogWrite(GREEN_LED_PIN, brightness);
  analogWrite(BLUE_LED_PIN, brightness);
}