#define BLYNK_TEMPLATE_ID "TMPL6knLvr_1y"
#define BLYNK_TEMPLATE_NAME "weather monitoring system"
#define BLYNK_AUTH_TOKEN "DRuOQmNuLvtV3P9_N_rOTNgzYIfJjvTZ"

#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <BlynkSimpleEsp32.h>

#define BLYNK_PRINT Serial
#define DHT_PIN 2
#define DHTTYPE DHT22
#define I2C_ADD 0x27
#define ROWS 2
#define COLS 16

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

LiquidCrystal_I2C lcd(I2C_ADD,ROWS,COLS);
DHT dht(DHT_PIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println("Test Begin!!");
  dht.begin();
  pinMode(A3, INPUT);
  Blynk.begin(auth,ssid,pass);
}

void loop() {
  // delay(2000);
  readDHT();
  lcd.init();
  lcd.backlight();
}

void readDHT(){
  int h = dht.readHumidity(); // reading humidity
  int t = dht.readTemperature(); //in celsius
  int value = analogRead(A3); //rainfall

  //checking if the error occur while reading
  if(isnan(h) || isnan(t)){
    Serial.println("Failed to read from DHT");
    return;
  }
   //computing heat index
  float hic = dht.computeHeatIndex(t,h);

  // Serial.print("Humidity : ");
  // Serial.print(String(h) + "%");
  // Serial.print(" Temperature : ");
  // Serial.print(String(t) + "C");
  // Serial.print(" Heat Index : ");
  // Serial.println(String(hic) +"C");
  lcdDisplay(0, 0, String(t),String(h),String(value));

  // if(t>35 || value > 500){
  //   warnDisp(0,0,String(t),String(valaue));
  // }

  if(t>35){
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.println("Too much Heat!!");
    lcd.setCursor(0,1);
    lcd.println("Temp:" +String(t));
  }

  if(value>500){
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.println("Extreme Rainfall!!");
    lcd.setCursor(0,1);
    lcd.println("Rainfall:" +String(value));
  }
}

void lcdDisplay(int col, int row, String msg,String hum,String rain){
  lcd.setCursor(col,row);
  lcd.println("Temp:"+String(msg));
  lcd.println("Hum:"+String(hum));
  lcd.setCursor(col,row+1);
  lcd.println("Rain:" +String(rain));
}

Blynk.virtualWrite(V0,h);
Blynk.virtualWrite(V1,t);
Blynk.virtualWrite(V2,rain);


// void warnDisp(int col,int row, String temp,String rain ){
//     lcd.clear();
//     lcd.setCursor(0,0);
//     lcd.println("Extreme Rainfall!!");
//     lcd.setCursor(0,1);
//     lcd.println("Rainfall:" +String(value));
// }