#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 "TMPL2ozQnQZgb"
#define BLYNK_TEMPLATE_NAME "Water Level Controller"
#define BLYNK_AUTH_TOKEN "MCO9ZlppZxubzF3sb0VdvZ-0rOGCqh_2"

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() {

  Serial.begin(115200);
  pinMode(LOWLED, OUTPUT);
  pinMode(MIDLED, OUTPUT);
  pinMode(HIGHLED, OUTPUT);
  pinMode(MOTOR, OUTPUT);

  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);

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

  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 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);

  float level = duration /58 ;
  Blynk.virtualWrite(V4,level);

  if (level<100){
    digitalWrite(LOWLED, LOW);
    digitalWrite(MOTOR, HIGH);
    digitalWrite(MIDLED, HIGH);
    digitalWrite(HIGHLED, 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(LOWLED, HIGH);
    digitalWrite(MIDLED, HIGH);
    digitalWrite(MOTOR, HIGH);
    Blynk.virtualWrite(V0,LOW);
    Blynk.virtualWrite(V1,LOW);
    Blynk.virtualWrite(V2,HIGH);
    Blynk.virtualWrite(V3,LOW);
  }

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