#define BLYNK_TEMPLATE_ID "TMPL34mMUTKrv"
#define BLYNK_TEMPLATE_NAME "Home Automation 2"
#define BLYNK_AUTH_TOKEN "wfl4QUSjfjwC4mOVlPz8_kEn3yhckUTw"

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <ESP32Servo.h>  // ✅ ESP32-compatible servo library

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

BlynkTimer timer;

// Button pins
#define button1_pin 26
#define button2_pin 25
#define button3_pin 33
#define button4_pin 32  // For servo

// Relay pins
#define relay1_pin 13
#define relay2_pin 12
#define relay3_pin 14

// Relay states
int relay1_state = 0;
int relay2_state = 0;
int relay3_state = 0;

// Virtual Pins
#define button1_vpin V1
#define button2_vpin V2
#define button3_vpin V3
#define button4_vpin V4  // Servo

// Servo config
Servo myServo;
#define servoPin 18  // PWM-capable pin
int servoAngle = 0;

BLYNK_CONNECTED() {
  Blynk.syncVirtual(button1_vpin);
  Blynk.syncVirtual(button2_vpin);
  Blynk.syncVirtual(button3_vpin);
  Blynk.syncVirtual(button4_vpin);
}

// Relay controls from Blynk
BLYNK_WRITE(button1_vpin) {
  relay1_state = param.asInt();
  digitalWrite(relay1_pin, relay1_state);
}
BLYNK_WRITE(button2_vpin) {
  relay2_state = param.asInt();
  digitalWrite(relay2_pin, relay2_state);
}
BLYNK_WRITE(button3_vpin) {
  relay3_state = param.asInt();
  digitalWrite(relay3_pin, relay3_state);
}
BLYNK_WRITE(button4_vpin) {
  rotate_servo();
}

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

  // Set pin modes
  pinMode(button1_pin, INPUT_PULLUP);
  pinMode(button2_pin, INPUT_PULLUP);
  pinMode(button3_pin, INPUT_PULLUP);
  pinMode(button4_pin, INPUT_PULLUP);

  pinMode(relay1_pin, OUTPUT);
  pinMode(relay2_pin, OUTPUT);
  pinMode(relay3_pin, OUTPUT);

  // Turn off all relays initially
  digitalWrite(relay1_pin, HIGH);
  digitalWrite(relay2_pin, HIGH);
  digitalWrite(relay3_pin, HIGH);

  // Attach the servo
  myServo.setPeriodHertz(50);   // Standard 50Hz for servos
  myServo.attach(servoPin, 500, 2400); // min/max pulse width in µs
  myServo.write(servoAngle);    // Set to 0°

  Blynk.begin(auth, ssid, pass);
}

void loop() {
  Blynk.run();
  timer.run();
  listen_push_buttons();
}

void listen_push_buttons() {
  if (digitalRead(button1_pin) == LOW) {
    delay(200);
    control_relay(1);
    Blynk.virtualWrite(button1_vpin, relay1_state);
  }
  else if (digitalRead(button2_pin) == LOW) {
    delay(200);
    control_relay(2);
    Blynk.virtualWrite(button2_vpin, relay2_state);
  }
  else if (digitalRead(button3_pin) == LOW) {
    delay(200);
    control_relay(3);
    Blynk.virtualWrite(button3_vpin, relay3_state);
  }
  else if (digitalRead(button4_pin) == LOW) {
    delay(200);
    rotate_servo();
    Blynk.virtualWrite(button4_vpin, servoAngle);
  }
}

void control_relay(int relay) {
  if (relay == 1) {
    relay1_state = !relay1_state;
    digitalWrite(relay1_pin, relay1_state);
    Serial.print("Relay 1 State: ");
    Serial.println(relay1_state);
  }
  else if (relay == 2) {
    relay2_state = !relay2_state;
    digitalWrite(relay2_pin, relay2_state);
    Serial.print("Relay 2 State: ");
    Serial.println(relay2_state);
  }
  else if (relay == 3) {
    relay3_state = !relay3_state;
    digitalWrite(relay3_pin, relay3_state);
    Serial.print("Relay 3 State: ");
    Serial.println(relay3_state);
  }
}

void rotate_servo() {
  servoAngle += 45;
  if (servoAngle > 180) servoAngle = 0;
  myServo.write(servoAngle);
  Serial.print("Servo Angle: ");
  Serial.println(servoAngle);
}