#include <PubSubClient.h>
#include <WiFi.h>  // Include the WiFi library if you're using WiFi for MQTT
 
const char* ssid = "Wokwi-Guest";
const char* password = "";
const char* mqttServer = "53617c9409644f51b8599da76015a496.s2.eu.hivemq.cloud";
const int mqttPort = 8883;  // MQTT broker port

const int buttonPin1 = 34;
const int buttonPin2 = 35;
const int buttonPinplaypause = 32;
const int BUZZER_PIN = 18;
int button1State = 0;
int button2State = 0;
int button3State = 0;

 
const char* buttonTopic1 = "button1";
const char* buttonTopic2 = "button2";
const char* buttonTopic3 = "button3";
const char* buzzerTopic = "buzzer";
 
bool musicState = false;
int currenttoneindex = 0;
int tones[3] = {1000, 2000, 3000};
 
WiFiClient espClient;
PubSubClient client(espClient);
 
void setup() {
  Serial.begin(115200);
  setupWifi();
  client.setServer(mqttServer, mqttPort);
  pinMode(BUZZER_PIN, OUTPUT);
}
 
void setupWifi() {
  delay(10);
  Serial.println("Connecting to WiFi");
  WiFi.begin(ssid, password);
  int attempts=0;
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println(".");
    attempts++;
    if(attempts >20){
      Serial.println("failed");
      while(true){
        delay(1000);
      }
    }
    
  }
  Serial.println("Connected to WiFi");
}
 
void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
 
  int newButton1State = digitalRead(buttonPin1);
  int newButton2State = digitalRead(buttonPin2);
  int newButton3State = digitalRead(buttonPinplaypause);
 
  if (newButton1State == HIGH && button1State == LOW) {
    // Button 1 logic - Increase tone
    toneAndPublish(tones[currenttoneindex]);
    currenttoneindex = (currenttoneindex + 1) % (sizeof(tones) / sizeof(tones[0]));
  }
 
  if (newButton2State == HIGH && button2State == LOW) {
    // Button 2 logic - Play a sequence
    playSequence();
  }
 
  if (newButton3State == HIGH && button3State == LOW) {
    // Button 3 logic - Decrease tone
    toneAndPublish(tones[currenttoneindex]);
    currenttoneindex = (currenttoneindex - 1 + sizeof(tones) / sizeof(tones[0])) % (sizeof(tones) / sizeof(tones[0]));
  }
 
  // Update button states for the next iteration
  button1State = newButton1State;
  button2State = newButton2State;
  button3State = newButton3State;
}
 
void reconnect() {
  while (!client.connected()) {
    if (client.connect("arduinoClient")) {
      Serial.println("Connected to MQTT broker");
    } else {
      Serial.print("Failed, rc=");
      Serial.print(client.state());
      Serial.println(" Retrying in 5 seconds...");
      delay(5000);
    }
  }
}
 
void toneAndPublish(int frequency) {
  tone(BUZZER_PIN, frequency);
  delay(1000);  // Adjust delay as needed
  noTone(BUZZER_PIN);
  client.publish(buzzerTopic, String(frequency).c_str());
}
 
void playSequence() {
  for (int i = 0; i < 2; ++i) {
    toneAndPublish(1500);
    delay(200);
    toneAndPublish(2000);
    delay(200);
  }
}