#define BLYNK_TEMPLATE_ID "TMPL3RbXt4EOv"
#define BLYNK_TEMPLATE_NAME "WATER LEVEL"
#define BLYNK_AUTH_TOKEN "xzZ_ytvmXFddu2Iq8SjcPb4tK3uqL1IB"




#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define LED1 19
#define LED2 18
#define LED3 2
#define LED4 15
#define trig 5
#define echo 4
#define relay 14
#define Buzzer 12
#define Temp 13


OneWire oneWire(Temp);
DallasTemperature sensors(&oneWire);
//Enter your tank max value(CM)
LiquidCrystal_I2C lcd(0x27, 16, 2);
int MaxLevel = 20;
int Level1 = (MaxLevel * 100) / 100; //20 
int Level2 = (MaxLevel * 70) / 100; //14
int Level3 = (MaxLevel * 50) / 100; //10
int Level4 = (MaxLevel * 25) / 100; // 5
//Initialize the LCD display

bool motorEnabled = true;

BlynkTimer timer;

// Enter your Auth token
char auth[] = "xzZ_ytvmXFddu2Iq8SjcPb4tK3uqL1IB";

//Enter your WIFI SSID and password
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

void setup() {

   Serial.println("Setup started");
  // Debug console
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass,"blynk.cloud", 80);
  sensors.begin();
  lcd.init();
  lcd.backlight();
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(relay, OUTPUT);
  pinMode(Buzzer, OUTPUT);
 
  digitalWrite(relay, HIGH);
  
  lcd.setCursor(0, 0);
  lcd.print("System");
  lcd.setCursor(4, 1);
  lcd.print("Loading..");
  delay(4000);
  lcd.clear();
}

//Get the ultrasonic sensor values
void ultrasonic() {
  digitalWrite(trig, LOW);
  delayMicroseconds(4);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  long t = pulseIn(echo, HIGH);
  int distance = t / 29 / 2;

 sensors.requestTemperatures(); // Send the command to get temperature readings
   int waterTemperature = sensors.getTempCByIndex(0); // Get temperature in Celsius

   // Display water temperature on LCD
   lcd.setCursor(9, 0);
    lcd.print(waterTemperature);
   lcd.print("c");
   Blynk.virtualWrite(V3, waterTemperature);
   Blynk.virtualWrite(V4, waterTemperature);
  //  Display water Level on LCD
   lcd.setCursor(10, 1);
   lcd.print(distance);
   lcd.print("cm");
  Serial.println(distance);

  int blynkDistance = (distance - MaxLevel) * -1;
  if (distance <= MaxLevel) {
    Blynk.virtualWrite(V0, blynkDistance);
  } else {
    Blynk.virtualWrite(V0, 0);
  }
  // lcd.setCursor(0, 0);
  // lcd.print("L:");

  if (Level1 <= distance) {
    lcd.setCursor(0, 0);
    lcd.print("Empty");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    digitalWrite(LED4, LOW);
     digitalWrite(Buzzer, HIGH);
     delay(1000);
      digitalWrite(Buzzer, LOW);
      delay(1000);
    if(motorEnabled==true)
    {
    digitalWrite(relay, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("Motor OFF ");
    }
    else{
      digitalWrite(relay, LOW);
      lcd.setCursor(0, 1);
      lcd.print("Motor ON ");
    }
    
  } else if (Level2 <= distance && Level1 > distance) {
    lcd.setCursor(0, 0);
    lcd.print("Low");
    lcd.print("      ");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, LOW);
    digitalWrite(LED4, LOW);
     digitalWrite(Buzzer, HIGH);
     delay(500);
     digitalWrite(Buzzer, LOW);
     delay(2000);
    if(motorEnabled==true)
    {
    digitalWrite(relay, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("Motor OFF ");
    }
    else{
      digitalWrite(relay, LOW);
      lcd.setCursor(0, 1);
      lcd.print("Motor ON ");
    }
  } else if (Level3 <= distance && Level2 > distance) {
    lcd.setCursor(0, 0);
    lcd.print("Medium");
    lcd.print("      ");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, HIGH);
    digitalWrite(LED4, LOW);
    if(motorEnabled==true)
    {
    digitalWrite(relay, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("Motor OFF ");
    }
    else{
      digitalWrite(relay, LOW);
      lcd.setCursor(0, 1);
      lcd.print("Motor ON ");
    }
  } else if (Level4 <= distance && Level3 > distance) {
    lcd.setCursor(0, 0);
    lcd.print("Full");
    lcd.print("      ");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, HIGH);
    digitalWrite(LED4, HIGH);
    if (distance > 5 ) { // Check if motor is enabled
      digitalWrite(relay, LOW);
      lcd.setCursor(0, 1);
      lcd.print("Motor ON ");
    } else {
      digitalWrite(relay, HIGH);
      lcd.setCursor(0, 1);
      lcd.print("Motor OFF ");
    }
  }
}

//Get the button value
BLYNK_WRITE(V1) {
 Serial.println("motorEnabled: ");
 Serial.println(motorEnabled);

  int Relay = param.asInt();
  Serial.println("Button State: " + String(Relay));
  digitalWrite(relay, Relay);
  if (Relay == HIGH) {
    lcd.setCursor(0, 1);
    lcd.print("Motor ON ");
    motorEnabled = true;
  } else {
    lcd.setCursor(0, 1);
    lcd.print("Motor OFF");
    motorEnabled = false;
  }
}

void loop() {
  ultrasonic();
  Blynk.run();//Run the Blynk library
}