#define BLYNK_TEMPLATE_ID "TMPL6VtGnqE8w"
#define BLYNK_TEMPLATE_NAME "SISTEM MONITORING PH"
#define BLYNK_AUTH_TOKEN "EYP9zS3hVv_PAaf6AfruyYdwhXhTJcWK"

#define BLYNK_PRINT Serial

#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h>
#include <BlynkSimpleEsp32.h>

Servo servo;

const char* ssid = "Wokwi-GUEST";
const char* password = "";

#define DHT_PIN 2       // Pin data sensor DHT22 terhubung ke pin 2 pada ESP32
#define DHT_TYPE DHT22  // Jenis sensor DHT22
#define POT_PIN 34      // Pin analog potensiometer terhubung ke pin 34 pada ESP32

DHT dht(DHT_PIN, DHT_TYPE);
LiquidCrystal_I2C lcd(0x27, 16, 4);
WidgetLCD lcd1(V3);

const int ledMerah = 13;
const int ledKuning = 12;
const int ledHijau = 14;

const int servoPin = 18;

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd1.clear();
  dht.begin();

  servo.attach(servoPin);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, password);
}

void loop() {
  Blynk.run();

  delay(2000);  // Tunda 2 detik antara pembacaan nilai

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  pinMode(POT_PIN, INPUT);

  pinMode(ledMerah, OUTPUT);
  pinMode(ledHijau, OUTPUT);
  pinMode(ledKuning, OUTPUT);

  // Periksa apakah pembacaan suhu dan kelembaban berhasil
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Gagal membaca sensor DHT22!");
    return;
  }

  Serial.print("Suhu: ");
  Serial.print(temperature);
  Serial.print(" °C\t");
  Serial.print("Kelembaban: ");
  Serial.print(humidity);
  Serial.println(" %");

  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(temperature);
  lcd.print(" C");
  lcd.setCursor(0, 1);
  lcd.print("Kelembaban: ");
  lcd.print(humidity);
  lcd.print(" %");

  // Baca nilai potensiometer
  int potValue = analogRead(POT_PIN);

  // Konversi nilai potensiometer menjadi nilai pH
  float ph = map(potValue, 0, 4095, 1, 100);

  // Tampilkan nilai potensiometer pada Serial Monitor
  Serial.print("PH: ");
  Serial.println(ph);

  // Tampilkan nilai potensiometer pada LCD
  lcd.setCursor(0, 2);
  lcd.print("PH: ");
  lcd.print(ph);
  lcd.print(" ");

  if (ph < 7) {
    digitalWrite(ledHijau, HIGH);
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledKuning, LOW);
    lcd.setCursor(0, 3);
    lcd.print("                     ");
    lcd.setCursor(0, 3);
    lcd.print("Basa");
    lcd1.print(0,0, "                 ");
    lcd1.print(0,0, "Basa");
    Blynk.logEvent("kondisi", "Basa");
  } else if (ph == 7) {
    digitalWrite(ledHijau, LOW);
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledKuning, HIGH);
    lcd.setCursor(0, 3);
    lcd.print("                     ");
    lcd.setCursor(0, 3);
    lcd.print("Normal");
    lcd1.print(0,0, "                 ");
    lcd1.print(0,0, "Normal");
    Blynk.logEvent("kondisi", "Normal");
  } else if (ph > 7 ) {
    digitalWrite(ledHijau, LOW);
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledKuning, LOW);
    lcd.setCursor(0, 3);
    lcd.print("                     ");
    lcd.setCursor(0, 3);
    lcd.print("Asam");
    lcd1.print(0,0, "                 ");
    lcd1.print(0,0, "Asam");
    Blynk.logEvent("kondisi", "Asam");
  }

  if (humidity > 25 && temperature > 25) {
    servo.write(180);
    lcd1.print(0,1, "                 ");
    lcd1.print(0,1, "Servo Menyala");
    Blynk.logEvent("servo", "Servo Menyala");
  } else {
    servo.write(0);
    lcd1.print(0,1, "                 ");
    lcd1.print(0,1, "Servo Mati");
    Blynk.logEvent("servo", "Servo Mati");
  }

  Blynk.virtualWrite(V0, humidity);
  Blynk.virtualWrite(V1, temperature);
  Blynk.virtualWrite(V2, ph);
}