#define BLYNK_TEMPLATE_NAME "Irman Project 1700"
#define BLYNK_AUTH_TOKEN "ZJEWKX5sSD-95b1sV9XnIo30xRp6k2-P"
#define BLYNK_TEMPLATE_ID "TMPL6aKi0WSQH"

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

// Kredensial WiFi
char ssid[] = "Wokwi-GUEST"; 
char pass[] = "";            

// Konfigurasi DHT
#define DHTPIN 23
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Konfigurasi OLED
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

// Konfigurasi Pin
#define SOIL_MOISTURE_PIN 34
#define RELAY_PIN 15
#define BUZZER_PIN 27

// Variabel Pompa
bool pumpStatus = false;

void connectToWiFi() {
  Serial.print("Menghubungkan ke WiFi");
  WiFi.begin(ssid, pass);

  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < 20) {
    delay(500);
    Serial.print(".");
    attempts++;
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("\nWiFi Terhubung!");
    Serial.print("IP Address: ");
    Serial.println(WiFi.localIP());
  } else {
    Serial.println("\nGagal terhubung ke WiFi. Periksa SSID/Password.");
    while (true); 
  }
}

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

  // Inisialisasi WiFi
  connectToWiFi();

  // Inisialisasi Blynk
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Inisialisasi DHT
  dht.begin();

  // Inisialisasi OLED
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("Gagal menginisialisasi OLED"));
    while (true);
  }

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println(F("Sistem Irigasi"));
  display.println(F("Memulai..."));
  display.display();
  delay(2000);

  // Inisialisasi pin
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW); // Pompa dimatikan awal
}

void loop() {
  Blynk.run();

  // Membaca data sensor
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  int soilMoistureRaw = analogRead(SOIL_MOISTURE_PIN);
  float soilMoisturePercent = map(soilMoistureRaw, 4095, 0, 0, 100);

  // Logika kontrol pompa dan buzzer
  if (soilMoisturePercent < 50) { // Jika kelembapan tanah kurang dari 50%
    digitalWrite(RELAY_PIN, HIGH); // Pompa dinyalakan
    pumpStatus = true;
    tone(BUZZER_PIN, 1000); // Buzzer berbunyi (frekuensi 1000 Hz)
    delay(500);
    noTone(BUZZER_PIN);
  } else { // Jika kelembapan tanah cukup
    digitalWrite(RELAY_PIN, LOW); // Pompa dimatikan
    pumpStatus = false;
    noTone(BUZZER_PIN);
  }

  // Menampilkan data di OLED
  display.clearDisplay();
  display.setCursor(0, 0);
  display.print(F("Suhu: "));
  display.print(temperature);
  display.println(F(" C"));
  display.print(F("Kelembapan: "));
  display.print(humidity);
  display.println(F(" %"));
  display.print(F("Tanah: "));
  display.print(soilMoisturePercent);
  display.println(F(" %"));
  display.print(F("Pompa: "));
  display.println(pumpStatus ? "ON" : "OFF");
  display.display();

  // Menampilkan data di Serial Monitor
  Serial.print("Suhu: ");
  Serial.print(temperature);
  Serial.print("°C, Kelembapan Udara: ");
  Serial.print(humidity);
  Serial.print("%, Kelembapan Tanah: ");
  Serial.print(soilMoisturePercent);
  Serial.print("%, Pompa: ");
  Serial.println(pumpStatus ? "ON" : "OFF");

  // Mengirim data ke Blynk
  Blynk.virtualWrite(V1, temperature); // Suhu
  Blynk.virtualWrite(V2, humidity);    // Kelembapan Udara
  Blynk.virtualWrite(V3, soilMoisturePercent); // Kelembapan Tanah
  Blynk.virtualWrite(V4, pumpStatus); // Status Pompa (ON/OFF)

  delay(3000); // Tunggu 3 detik
}