#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID "TMPLU41tfVxF"
#define BLYNK_DEVICE_NAME "ESP32SuHu"
#define BLYNK_AUTH_TOKEN "lSHFRJUovrfrVz9fIAnumpYPAz3U9KZu" 

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define LED1pin 19
#define LED2pin 18

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include "DHTesp.h"

#include <LiquidCrystal_I2C.h>

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

const int DHT_PIN = 15;
DHTesp dhtSensor;

int lcdColumns = 16;
int lcdRows = 2;

int S;
int H;
int LED1;
int LED2;

LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);
byte SimbolDerajat[] = {
  B00110,
  B01001,
  B01001,
  B00110,
  B00000,
  B00000,
  B00000,
  B00000,
};

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

BlynkTimer timer; 

void sendSensor(){
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature) + "°C");
  Serial.println("Humidity: " + String(data.humidity) + "%");
  Serial.println("---");
  Blynk.virtualWrite(V5, data.temperature); 
  Blynk.virtualWrite(V6, data.humidity);
}

void setup(){
  lcd.init();
  lcd.createChar(0, SimbolDerajat);
  lcd.backlight();
  
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  pinMode(LED1pin, OUTPUT);
  pinMode(LED2pin, OUTPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  timer.setInterval(1000L, sendSensor);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(0);
  display.clearDisplay();
  display.setTextColor(WHITE);

}

void loop(){
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(data.temperature));
  lcd.write(0);
  lcd.print("C");

  lcd.setCursor(0, 1);
  lcd.print("Humidity: " + String(data.humidity) + "%");

  H = data.humidity;
  if (H<=40){
    digitalWrite(18, HIGH);
    display.setTextSize(2);
    display.setCursor(0,40);
    display.print("PUMP ON");
    Blynk.virtualWrite(V4, "PUMP ON");
    display.display();
  }

  if (H>=40){
    digitalWrite(18, LOW);
    display.setTextSize(2);
    display.setCursor(0,40);
    display.print("PUMP OFF");
    Blynk.virtualWrite(V4, "PUMP OFF");
    display.display();
  } 

  S = data.temperature;
  if (S<=40){
    digitalWrite(19, LOW);
    display.setTextSize(2);
    display.setCursor(0,0);
    display.print("FAN OFF");
    Blynk.virtualWrite(V3, "FAN OFF");
    display.display();
  }

  if (S>=40){
    digitalWrite(19, HIGH);
    display.setTextSize(2);
    display.setCursor(0,0);
    display.print("FAN ON");
    Blynk.virtualWrite(V3, "FAN ON");
    display.display();
  }
  display.clearDisplay();
  Blynk.run();
  timer.run();
}