#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <OneWire.h>
#include <DallasTemperature.h>

LiquidCrystal_I2C lcd(0x27,16,2);

OneWire oneWire(A1);
DallasTemperature sensors(&oneWire);

#define LED_RED 6
#define LED_GREEN 5
#define LED_BLUE 3

#define RED_BUTTON 2
#define GREEN_BUTTON 4

#define ENCODER1 A2
#define ENCODER2 A3

#define POTENTIOMETER A0

void initRGB() {
  pinMode(LED_RED, OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(LED_BLUE, OUTPUT);
}

void initButtons()
{
  pinMode(RED_BUTTON, INPUT_PULLUP);
  pinMode(GREEN_BUTTON, INPUT_PULLUP);
}

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(9600);

  initRGB();
  initButtons();
  lcd.init();

  lcd.begin(16, 2);
  analogReference(DEFAULT);

  lcd.setCursor(0, 0);
  lcd.print("Odczyt ADC:");
  lcd.setCursor(0, 1);
  lcd.print("Napiecie (V):");
}

int ledColor = 0;  // Zmienna do przechowywania obecnego stanu LED: 0 = czerwony, 1 = zielony, 2 = niebieski
bool isLedOn = false;
void lab_2_zad_1() {
  if (isLedOn) {
    if (ledColor == 0) {
      // Zapal czerwoną diodę LED
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_GREEN, LOW);
      digitalWrite(LED_BLUE, LOW);
    } else if (ledColor == 1) {
      // Zapal zieloną diodę LED
      digitalWrite(LED_RED, LOW);
      digitalWrite(LED_GREEN, HIGH);
      digitalWrite(LED_BLUE, LOW);
    } else {
      // Zapal niebieską diodę LED
      digitalWrite(LED_RED, LOW);
      digitalWrite(LED_GREEN, LOW);
      digitalWrite(LED_BLUE, HIGH);
    }
  }

  if(digitalRead(RED_BUTTON) == LOW) {
    if (isLedOn) {
      digitalWrite(LED_RED, LOW);
      digitalWrite(LED_GREEN, LOW);
      digitalWrite(LED_BLUE, LOW);
      isLedOn = false;
    } else {
      isLedOn = true;
    }
    while(digitalRead(RED_BUTTON) == LOW) {
      delay(20);
    }
  }

  if(digitalRead(GREEN_BUTTON) == LOW) {
    // Jeśli zielony przycisk jest naciśnięty, zmień stan diody LED
    ledColor = (ledColor + 1) % 3;

    while(digitalRead(GREEN_BUTTON) == LOW) {
      delay(20);
    }
  }
  delay(100);
}

int intensityLevel = 0;
void lab_2_zad_2() {
  analogWrite(LED_GREEN, intensityLevel);

  if(digitalRead(RED_BUTTON) == LOW) {
    intensityLevel = max(intensityLevel - 1, 0);
  } else if (digitalRead(GREEN_BUTTON) == LOW) {
    intensityLevel = min(intensityLevel + 1, 255);
  }
  delay(20);
}

int redIntensity = 255;
bool isRedLightning = false;

int greenIntensity = 0;
bool isGreenLightning = false;

int blueIntensity = 0;
bool isBlueLightning = false;

void lab_2_zad_3() {
  analogWrite(LED_RED, redIntensity);
  analogWrite(LED_GREEN, greenIntensity);
  analogWrite(LED_BLUE, blueIntensity);
  if (redIntensity > 0) {
    if (isRedLightning) {
      redIntensity++;
    } else {
      redIntensity--;
    }
    if (redIntensity == 0) {
      isGreenLightning = true;
      greenIntensity = 1;
    } else if (redIntensity == 255) {
      isRedLightning = false;
    }
  } else if (greenIntensity > 0) {
    if (isGreenLightning) {
      greenIntensity++;
    } else {
      greenIntensity--;
    }
    if (greenIntensity == 0) {
      isBlueLightning = true;
      blueIntensity = 1;
    } else if (greenIntensity == 255) {
      isGreenLightning = false;
    }
  } else {
    if (isBlueLightning) {
      blueIntensity++;
    } else {
      blueIntensity--;
    }
    if (blueIntensity == 0) {
      isRedLightning = true;
      redIntensity = 1;
    } else if (blueIntensity == 255) {
      isBlueLightning = false;
    }
  }
  delay(10);
}

void lab_4_zad_1() {
  if (Serial.available() > 0) {
    String command = Serial.readStringUntil('\n');

    int ledNumber = command.charAt(3) - '0';
    int brightness = command.substring(5).toInt();

    if (ledNumber == 1) {
    analogWrite(LED_RED, brightness);
    } else if (ledNumber == 2) {
    analogWrite(LED_GREEN, brightness);
    } else if (ledNumber == 3) {
    analogWrite(LED_BLUE, brightness);
    }

    Serial.print("Dioda ");
    Serial.print(ledNumber);
    Serial.print(" ustawiona na jasność ");
    Serial.println(brightness);
  }
}

void loop() {
  lab_2_zad_1();
}