/*Project Sem 3 
ENVIROMENTAL MONITORING SYSTEM WITH BLYNK INTEGRATION
Sharifah Hana Humaira 52224122452
IZZAH BINTI MOHD NIZAM 52224122098*/

//connection to Blynk
#define BLYNK_TEMPLATE_ID "TMPL6GtflE36p"
#define BLYNK_TEMPLATE_NAME "Project Sem 3"
#define BLYNK_AUTH_TOKEN "KTVxYs8e2L1rE9-OsLKEsQB5L213Y0w-"

#include "DHTesp.h"
#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

const int DHT_PIN = 15;
const int LDR_PIN = 34;

DHTesp dhtSensor;
RTC_DS3231 rtc;
LiquidCrystal_I2C lcd(0x27, 16, 2);

BlynkTimer timer;

#define BLYNK_PRINT Serial

// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

void myTimerEvent()
{
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  DateTime now = rtc.now();

  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(data.temperature, 2) + "C");
  delay(2000);  // Display temperature for 2 seconds
  lcd.clear();

  lcd.print("Humidity: " + String(data.humidity, 1) + "%");
  delay(2000);  // Display humidity for 2 seconds
  lcd.clear();

  lcd.print("Time: " + String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second()));
  delay(2000);  // Display time for 2 seconds
  lcd.clear();

  
  //send Data to Blynk
  Blynk.virtualWrite(V0, data.temperature);
  Blynk.virtualWrite(V1, data.humidity);

  int ldrValue = analogRead(LDR_PIN);
  bool isDay = ldrValue < 1200; 

  Blynk.virtualWrite(V2, isDay ? "Day" : "Night");
  
  //Print Serial Monitor
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("Time: " + String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second()));
  Serial.println("LDR Value: " + String(ldrValue));
  Serial.println(String("Day/Night: ") + (isDay ? "Day" : "Night"));
  Serial.println("---");
}

void setup()
{
  Serial.begin(115200);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  
  //Check RTC
  if (!rtc.begin())
  {
    Serial.println("Couldn't find RTC");
    while (1)
      ;
  }
 
  if (rtc.lostPower())
  {
    Serial.println("RTC lost power, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  lcd.begin(16, 2);
  lcd.backlight();
  lcd.setCursor(0, 0);
  //Print to LCD
  lcd.print("Temp: --.-C  Humidity: --%");
  lcd.setCursor(0, 1);
  lcd.print("Time: --:--:--");

  timer.setInterval(1000L, myTimerEvent);
}

void loop()
{
  Blynk.run();
  timer.run();
}