#include <WiFi.h>
#include <PubSubClient.h>
#include <Wire.h>
#include "LiquidCrystal_I2C.h"
#include "DHT.h"
#include <ESP32Servo.h>
#include <RTClib.h>
RTC_DS1307 rtc;

#define relayPin 18
#define ldrPin 35
#define DHT_PIN 15
#define DHTTYPE DHT22
#define LED_PIN 33
#define ServoPin 19
#define lightSensorPin 34
DHT dht(DHT_PIN, DHT22);
LiquidCrystal_I2C lcd1(0x27, 20, 4);
LiquidCrystal_I2C lcd2(0x26, 16, 2);
Servo myservo;

// Sensor Soil Moisture FC28 dengan potentiometer
#include "FC28.h"
#define SensorFC28_Pin 34
float soil_moisture;
FC28Sensor mySensor;

const float gama = 0.7;
const float rl10 = 50;
int lightThreshold = 500;

void setup() {
  Serial.begin(9600);
  Serial.flush();

  pinMode(ldrPin, INPUT);
  pinMode(DHT_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(relayPin, OUTPUT);

  // Inisialisasi Sensor FC28
  mySensor.initFC28Sensor(115200, SensorFC28_Pin);

  // Inisialisasi RTC
  Wire.begin();
  if (!rtc.begin()) {
    Serial.println("RTC Tidak Terhubung");
    lcd1.setCursor(0, 0);
    lcd1.print("RTC Tidak Konek");
    while (1);
  }

  // Inisialisasi Komponen
  Serial.println("Smart Farming System");
  dht.begin();
  lcd1.init();
  lcd1.backlight();
  lcd2.init();
  lcd2.backlight();

  lcd1.setCursor(0, 0);
  lcd1.print("IOT LABORA");
  lcd1.setCursor(0, 1);
  lcd1.print("Monitoring Sistem");
  delay(2000);
  lcd1.clear();

  // Inisialisasi Servo
  myservo.attach(ServoPin);
  myservo.write(0); // Posisi awal servo motor
}

void loop() {
  // RTC untuk menampilkan waktu
  DateTime now = rtc.now();
  int tahun = now.year() % 100;
  Serial.println("Tanggal: " + String(now.day()) + "/" + String(now.month()) + "/" + String(tahun));
  Serial.println("Waktu: " + String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second()));

  // Data Sensor DHT22
  float hum = dht.readHumidity();
  float temp = dht.readTemperature();
  Serial.println("Suhu: " + String(temp, 2) + " °C");
  Serial.println("Kelembaban: " + String(hum, 1) + " %");

  // Data Sensor LDR
  int ldrValue = analogRead(ldrPin);
  ldrValue = map(ldrValue, 4095, 0, 1024, 0);
  float ldrVoltage = ldrValue / 1024.0 * 5;
  float ldrResistance = 2000 * ldrVoltage / (1 - ldrVoltage / 5);
  float lux = pow(rl10 * 1e3 * pow(10, gama) / ldrResistance, (1 / gama));
  Serial.println("Kecerahan: " + String(lux, 3) + " Lux");
  String luxmsg = lux < 807 ? "Kurang" : lux > 808 && lux < 1614 ? "Medium" : "Tinggi";

  // Data Sensor Soil Moisture FC28
  soil_moisture = mySensor.getSoilMoisture();
  String soilStatus = soil_moisture < 33.33 ? "Basah" : soil_moisture > 66.66 ? "Kering" : "Normal";
  Serial.println("Soil Moisture: " + String(soil_moisture, 2) + " %");

  // Kontrol Relay untuk Penyiraman
  if (soil_moisture > 66.66) {
    digitalWrite(relayPin, HIGH);
    myservo.write(180);
  } else {
    digitalWrite(relayPin, LOW);
    myservo.write(0);
  }

  // Output ke LCD1
  lcd1.setCursor(0, 0);
  lcd1.print("Tanah: ");
  lcd1.print(soilStatus);

  lcd1.setCursor(0, 1);
  lcd1.print("Kecerahan: ");
  lcd1.print(luxmsg);

  lcd1.setCursor(0, 2);
  lcd1.print("Suhu: ");
  lcd1.print(temp);
  lcd1.print(" C");

  lcd1.setCursor(0, 3);
  lcd1.print("Kelembaban: ");
  lcd1.print(hum);
  lcd1.print(" %");

  // Data Sensor Cahaya & Servo
  int lightValue = analogRead(lightSensorPin);
  lcd2.setCursor(0, 0);
  lcd2.print("Cahaya: ");
  lcd2.print(lightValue);

  lcd2.setCursor(0, 1);
  lcd2.print("Status: ");
  if (lightValue < lightThreshold) {
    lcd2.print("Gelap");
    myservo.write(180); // Penyiraman jika cahaya rendah
    delay(3000);
    myservo.write(0);
  } else {
    lcd2.print("Terang");
  }

  Serial.println("--------------");
  delay(2000);
  lcd1.clear();
  lcd2.clear();
}