#define BLYNK_TEMPLATE_ID           "TMPL6sSTSU4i5"
#define BLYNK_TEMPLATE_NAME         "Green House Automation System"
#define BLYNK_AUTH_TOKEN            "AWqFckllrZYAx4vgFjEW3oefqi212ERs"

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32_SSL.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>


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

#define DHTPIN 32
#define DHTTYPE DHT22 // DHT 22
DHT dht(DHTPIN, DHTTYPE);

const int LDR_PIN =35;
const int relayPin1 =19;
const int relayPin2 =18;
const int relayPin3 =17;
const int relayPin4 =16;
const int relayPin5 =4;

LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

BlynkTimer timer;

void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
   
  int potValue = analogRead(34);
  Blynk.virtualWrite(V2, potValue);

}
void sendSensor()
{
  
}
BLYNK_WRITE(V3)
{
  int pinValue = param.asInt(); // assigning incoming value from pin V1 to a variable
  // You can also use:
  // String i = param.asStr();
  // double d = param.asDouble();
  Serial.print("V3 Motor status: ");
  Serial.println(pinValue);
  digitalWrite(18, pinValue);
}




void setup() {
  // put your setup code here, to run once:
  pinMode(relayPin1, OUTPUT);
  pinMode(relayPin2, OUTPUT);
  pinMode(relayPin3, OUTPUT);
  pinMode(relayPin4, OUTPUT);
  pinMode(relayPin5, OUTPUT);

  pinMode(LDR_PIN,INPUT);

  Serial.begin(115200);
  lcd.init(); // initialize the lcd
  lcd.backlight();
  Serial.println("Hello, ESP32!");
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

    dht.begin();
   

  timer.setInterval(1000L, sendSensor);
  timer.setInterval(1000L, myTimerEvent);

}

void CO2Level() {
  int16_t z = analogRead(25);
  String msg1 = z < 800 ? "Low" : z > 1000 ? "YES" : "OK";
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("CO2: ");
  lcd.print(msg1);
  lcd.setCursor(0, 0);
  lcd.print("GAS Active");
  delay(1000);      // print message at (0, 0)
  
  if (z < 800){
  digitalWrite(relayPin1, LOW);
  } else {
  digitalWrite(relayPin1, HIGH);
  }
  
 }

 void MoistureLevel() {
  int16_t i = analogRead(34);
  String msg = i < 2165 ? "WET" : i > 3135 ? "DRY" : "OK";
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Soil: ");
  lcd.print(msg);
  delay(1000);      // print message at (0, 0)

 if (i<3135)

  {
    digitalWrite(relayPin2,LOW);
    delay(500);
  }

  else if(i>3500)
  {
    digitalWrite(relayPin2,HIGH);
    delay(500);
  }

 }

void PhLevel() {
  int16_t p = analogRead(33);
  lcd.clear();
  lcd.setCursor(10,0);
  lcd.print("PH: ");
  lcd.print(String(p));
  delay(1000);       // print message at (0, 0)
Blynk.virtualWrite(V4, p);

if (p<8)
  {
    digitalWrite(relayPin3,LOW);
    delay(500);
  }
  else if(p>7)
  {
    digitalWrite(relayPin3,HIGH);
    delay(500);
  }
 }



void loop() {
  // put your main code here, to run repeatedly:
 float h = dht.readHumidity();
 float temp = dht.readTemperature();

  if (isnan(h) || isnan(temp)) {
    Serial.println("Failed to read from DHT sensor!");
  } else {
  if (temp < 27){
  digitalWrite(relayPin5, LOW);
  } else {
  digitalWrite(relayPin5, HIGH);
  
  }
  }
  Blynk.virtualWrite(V1, h);
  Blynk.virtualWrite(V0, temp);
  

  delay(10); // this speeds up the simulation

int sensorValue=analogRead(LDR_PIN);  // Read the LDR value (0-4095)
  int brightness =map(sensorValue,0,4095,0,255);// Map to LED brightness (0-255)

  if (sensorValue<1000)

  {
    digitalWrite(relayPin4,LOW);
    delay(500);
  }

  else if(sensorValue>2000)
  {
    digitalWrite(relayPin4,HIGH);
    delay(500);
  }
  Serial.print("Humidity: ");
  Serial.print(h);

  Serial.print("  |  ");

  Serial.print("Temperature: ");
  Serial.print(temp);
  Serial.print("°C  ~  ");
  Serial.print("PH: ");
  Serial.print(analogRead(33));

  Serial.print("  |  ");

  Serial.print("CO2: ");
  Serial.print(800);
  Serial.println("Current Flowing");
  delay(1000);
   } else {
  Serial.println("Current not Flowing");



  CO2Level();
  MoistureLevel();
  PhLevel();
  Blynk.run();
  timer.run();
}