#define BLYNK_TEMPLATE_ID "TMPL3QrqTPhYS"
#define BLYNK_TEMPLATE_NAME "ROBOT"

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <pitches.h>

#define OLED_RESET    -1
Adafruit_SSD1306 display(OLED_RESET);

#define LED_PIN_1  17
#define LED_PIN_2  14
#define BUZZER_PIN 4

char auth[] = "WMZvRR4gALoLwHywnH4l4kwQEuKCWvmZ";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

bool led1State = false;
bool led2State = false;
bool buzzerState = false;

int merryChristmasMelody[] = {
  NOTE_E5, NOTE_E5, NOTE_F5, NOTE_G5, NOTE_G5, NOTE_F5, NOTE_E5,
  NOTE_D5, NOTE_D5, NOTE_E5, NOTE_D5, NOTE_G5, NOTE_F5, NOTE_F5,
  NOTE_G5, NOTE_E5, NOTE_E5, NOTE_F5, NOTE_G5, NOTE_G5, NOTE_F5,
  NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5, NOTE_D5, NOTE_G5, NOTE_F5,
  NOTE_F5, NOTE_G5, NOTE_E5, NOTE_E5, NOTE_F5, NOTE_G5, NOTE_G5,
  NOTE_F5, NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5, NOTE_D5, NOTE_C5
};

int merryChristmasNoteDurations[] = {
  8, 8, 4, 4, 4, 8, 8,
  8, 8, 4, 4, 4, 4, 2,
  8, 8, 4, 4, 4, 8, 8,
  8, 8, 4, 4, 4, 4, 2,
  8, 8, 4, 4, 4, 8, 8,
  8, 8, 4, 4, 4, 4, 2
};

void setup() {
  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);

  pinMode(LED_PIN_1, OUTPUT);
  pinMode(LED_PIN_2, OUTPUT);

  display.begin(SSD1306_PAGEADDR, 0x3C);
  display.display();
  delay(2000);
  display.clearDisplay();
  displayDefaultMessage();
}

void loop() {
  Blynk.run();
  updateOLED();
}

void updateOLED() {
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);

  if (led1State || led2State || buzzerState) {
    display.print("LED 1: ");
    display.println(led1State ? "ON" : "OFF");

    display.print("LED 2: ");
    display.println(led2State ? "ON" : "OFF");

    display.print("Buzzer: ");
    display.println(buzzerState ? "ON" : "OFF");

    if (buzzerState) {
      playMerryChristmasMelody();
      buzzerState = false;
    }
  } else {
    displayDefaultMessage();
  }

  display.display();
}

void displayDefaultMessage() {
  display.print("      []      []\n\n\n        =======   ");
  display.display();
}

void playMerryChristmasMelody() {
  for (int i = 0; i < sizeof(merryChristmasMelody) / sizeof(merryChristmasMelody[0]); i++) {
    int noteDuration = 1000 / merryChristmasNoteDurations[i];
    tone(BUZZER_PIN, merryChristmasMelody[i], noteDuration);
    delay(noteDuration * 1.30);
  }
  noTone(BUZZER_PIN);
}

BLYNK_WRITE(V1) {
  int ledState = param.asInt();

  if (ledState == 1) {
    digitalWrite(LED_PIN_1, HIGH);
    led1State = true;
  } else {
    digitalWrite(LED_PIN_1, LOW);
    led1State = false;
  }
}

BLYNK_WRITE(V2) {
  int ledState = param.asInt();

  if (ledState == 1) {
    digitalWrite(LED_PIN_2, HIGH);
    led2State = true;
  } else {
    digitalWrite(LED_PIN_2, LOW);
    led2State = false;
  }
}

BLYNK_WRITE(V3) {
  buzzerState = param.asInt();
}