#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6jBZ-qpnI"
#define BLYNK_TEMPLATE_NAME "BlynkCA 01"
#define BLYNK_AUTH_TOKEN "cBljKlW9nuQhsMSBcFb-g5clwC4NEE-C"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <Adafruit_NeoPixel.h>
#include <DHT.h>

char auth[] = "cBljKlW9nuQhsMSBcFb-g5clwC4NEE-C";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Pin definitions
#define TRIG_PIN 12
#define ECHO_PIN 14
#define DHT_PIN 4
#define RED_LED_PIN 27
#define NEOPIXEL_PIN 5

// Sensor and LED configurations
#define DHTTYPE DHT22
DHT dht(DHT_PIN, DHTTYPE);
Adafruit_NeoPixel pixels(16, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);

BlynkTimer timer;

void setup()
{
  Serial.begin(115200);
  
  // Blynk setup
  Blynk.begin(auth, ssid, pass);
  
  // Sensor setup
  dht.begin();
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(RED_LED_PIN, OUTPUT);

  pixels.begin();
  pixels.show();

    // Start wifi - 2 parameters (ssid & password)
 WiFi.begin(ssid, pass);
  Serial.println("Connecting to WiFi");

  // Connection status
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  // Connection Info
  Serial.println("");
  Serial.println("WiFi connected!");
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());

  // Timers
  timer.setInterval(2000L, sendSensorData);
}

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

void sendSensorData()
{
  // Ultrasonic sensor
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = (duration / 2) * 0.0343;

  // DHT22 sensor
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // Send data to Blynk
  Blynk.virtualWrite(V2, distance); // Assuming V1 is for distance
  Blynk.virtualWrite(V3, temperature); // Assuming V2 is for temperature
  Blynk.virtualWrite(V4, humidity); // Assuming V3 is for humidity
}

BLYNK_WRITE(V0) // Assuming V4 is for Red LED control
{
  int pinValue = param.asInt();
  digitalWrite(RED_LED_PIN, pinValue);
}

BLYNK_WRITE(V1) // Assuming V5 is for Neopixel control
{

  for(int i=0; i<=17; i++){

  pixels.setPixelColor(i, pixels.Color(0, 70, 0));
  pixels.show();
  delay(2000);
  pixels.clear();
  delay(1000);

  }

}