#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define PIN_TRIG 26
#define PIN_ECHO 25
#define LOWLED   18
#define MIDLED   19
#define HIGHLED  21
#define MOTOR    27

#define BLYNK_TEMPLATE_ID "TMPL3S20Cf4p8"
#define BLYNK_TEMPLATE_NAME "Water level controller"
#define BLYNK_AUTH_TOKEN "VH0BBAV_wAcUOxW1yEvtzabxEgId6Jh_"
char auth[] = BLYNK_AUTH_TOKEN;

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Router";
char pass[] = "123456789";

unsigned int level = 0;

BlynkTimer timer;

BLYNK_WRITE(V3)
{

  int pinValue=param.asInt();
  digitalWrite(MOTOR,pinValue);
  Blynk.virtualWrite(V3,pinValue);
  
}

void setup() {

  pinMode(LOWLED,OUTPUT);
  pinMode(MIDLED,OUTPUT);
  pinMode(HIGHLED,OUTPUT);
  pinMode(MOTOR,OUTPUT);
  digitalWrite(LOWLED,HIGH);
  digitalWrite(MIDLED,HIGH);
  digitalWrite(HIGHLED,HIGH);
  digitalWrite(MOTOR,LOW);

  Serial.begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);

  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

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

void loop() {
  // Start a new measurement:
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);

  // Read the result:
  int duration = pulseIn(PIN_ECHO, HIGH);
  Serial.print("Distance in CM: ");
  Serial.println(duration / 58);
  Serial.print("Distance in inches: ");
  Serial.println(duration / 148);
  
  level = duration / 58;
  Blynk.virtualWrite(V4,level);

  if (level < 100)
  {

        digitalWrite(LOWLED,LOW);
        digitalWrite(MOTOR,HIGH);
        digitalWrite(HIGHLED,HIGH);
        digitalWrite(MIDLED,HIGH);
        Blynk.virtualWrite(V0,HIGH);
        Blynk.virtualWrite(V1,LOW);
        Blynk.virtualWrite(V2,LOW);
        Blynk.virtualWrite(V3,HIGH);

  }
  else if ((level > 200) && (level <400))
  {
        digitalWrite(LOWLED,HIGH);
        digitalWrite(HIGHLED,HIGH);
        digitalWrite(MIDLED,LOW);
        Blynk.virtualWrite(V0,LOW);
        Blynk.virtualWrite(V1,HIGH);
        Blynk.virtualWrite(V2,LOW);
        
  }
  else if (level >= 400 )
  {
        digitalWrite(HIGHLED,LOW);
        digitalWrite(MIDLED,HIGH);
        digitalWrite(LOWLED,HIGH);
        digitalWrite(MOTOR,LOW);

        Blynk.virtualWrite(V0,LOW);
        Blynk.virtualWrite(V1,LOW);
        Blynk.virtualWrite(V2,HIGH);
        Blynk.virtualWrite(V3,LOW);

  }

  delay(1000);
   Blynk.run();
}