#define BLYNK_TEMPLATE_ID "TMPL601XHdtLr"
#define BLYNK_TEMPLATE_NAME "Pemantauan Cuaca"
#define BLYNK_AUTH_TOKEN "qjlFMKG1qQPLpeo7MFG6PjOUETalEQYM"
#define BLYNK_PRINT Serial

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include "DHT.h"
#include <Servo.h>

// WiFi credentials
const char* ssid = "Tselhome-1923";
const char* password = "xxxxxxx3";

// DHT Sensor configuration
#define DHTPIN 4
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

// Soil sensor configuration
#define SoilSensor 34 // Pin analog ESP32
#define POMPA 2
#define LED_POMPA 13

// Rain sensor configuration
#define RainSensor 35 // Pin analog ESP32
#define THRESHOLD_RAIN 500 // Threshold for detecting rain

// Servo configuration
Servo atapServo;
#define SERVO_PIN 25
#define SERVO_OPEN_ANGLE 90  // Angle to open the roof
#define SERVO_CLOSE_ANGLE 0  // Angle to close the roof

// LCD I2C configuration
LiquidCrystal_I2C lcd(0x27, 16, 2); // Adjust the I2C address (0x27) if needed

float kelembabanTanah;
float thresholdKelembapan = 40.0;

char auth[] = BLYNK_AUTH_TOKEN;
BlynkTimer timer;

bool isHujan = false;

// Function to send DHT sensor data
void sendSensorData() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(V0, t); // Temperature to virtual pin V0
  Blynk.virtualWrite(V1, h); // Humidity to virtual pin V1

  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.println(" °C");

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.println(" %");
}

// Function to read soil moisture
void readSoilMoisture() {
  int hasilPembacaan = analogRead(SoilSensor);
  kelembabanTanah = (100 - ((hasilPembacaan / 4095.00) * 100));

  Serial.print("Persentase Kelembaban Tanah = ");
  Serial.print(kelembabanTanah);
  Serial.println("%");

  Blynk.virtualWrite(V2, kelembabanTanah);

  if (kelembabanTanah < thresholdKelembapan) {
    digitalWrite(POMPA, LOW); // Turn on pump
    digitalWrite(LED_POMPA, HIGH); // Turn on LED
    Serial.println("Pompa Menyala");
    Blynk.virtualWrite(V3, "ON");
    sendNotification();
  } else {
    digitalWrite(POMPA, HIGH); // Turn off pump
    digitalWrite(LED_POMPA, LOW); // Turn off LED
    Serial.println("Pompa Mati");
    Blynk.virtualWrite(V3, "OFF");
  }
}

// Function to check rain status and control the roof
void checkRain() {
  int rainValue = analogRead(RainSensor);
  Blynk.virtualWrite(V4, rainValue); // Send rain value to virtual pin V4

  Serial.print("Rain Sensor Value: ");
  Serial.println(rainValue);

  if (rainValue < THRESHOLD_RAIN) {
    Serial.println("Hujan terdeteksi! Menutup atap.");
    atapServo.write(SERVO_CLOSE_ANGLE);
    Blynk.virtualWrite(V5, "CLOSE");
    isHujan = true;
  } else {
    Serial.println("Tidak ada hujan. Membuka atap.");
    atapServo.write(SERVO_OPEN_ANGLE);
    Blynk.virtualWrite(V5, "OPEN");
    isHujan = false;
  }
}

// Function to display data on LCD
void displayLCD() {
  lcd.clear();

  // Line 1: Temp & Humidity
  float t = dht.readTemperature();
  float h = dht.readHumidity();
  lcd.setCursor(0, 0);
  lcd.print("T:");
  lcd.print(t, 1);
  lcd.print("C H:");
  lcd.print(h, 1);
  lcd.print("%");

  // Line 2: Rain & Pump Status
  lcd.setCursor(0, 1);
  lcd.print("Rain:");
  lcd.print(isHujan ? "Yes" : "No ");
  lcd.print(" P:");
  lcd.print(digitalRead(POMPA) == LOW ? "ON" : "OFF");
}

// Function to send notification
void sendNotification() {
  Blynk.notify("Kelembaban tanah rendah! Pompa menyala.");
}

// Function to update soil moisture threshold from Blynk
BLYNK_WRITE(V6) {
  thresholdKelembapan = param.asFloat();
  Serial.print("Threshold Kelembaban Tanah diubah menjadi: ");
  Serial.println(thresholdKelembapan);
}

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, password);

  pinMode(POMPA, OUTPUT);
  pinMode(LED_POMPA, OUTPUT);

  dht.begin();
  atapServo.attach(SERVO_PIN);

  // Initialize servo position
  atapServo.write(SERVO_OPEN_ANGLE);

  // Initialize LCD
  lcd.init();
  lcd.backlight();

  // Set timers
  timer.setInterval(5000L, sendSensorData); // DHT sensor every 5 seconds
  timer.setInterval(10000L, readSoilMoisture); // Soil moisture every 10 seconds
  timer.setInterval(3000L, checkRain); // Rain sensor every 3 seconds
  timer.setInterval(2000L, displayLCD); // Update LCD every 2 seconds
}

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