#include "DHT.h"
#include <WiFi.h>
#include <Firebase_ESP_Client.h>
#include "addons/TokenHelper.h"
#include "addons/RTDBHelper.h"

// ======= KONFIGURASI WIFI =======
#define WIFI_SSID "flame"
#define WIFI_PASSWORD "Nisa1234."

// ======= KONFIGURASI FIREBASE =======
#define API_KEY "AIzaSyBWdmHcBVtmkZ8Eeg5aaLF9nmsiL47MXaI"
#define DATABASE_URL "https://deteksi-kebakaran-berbas-915bd-default-rtdb.firebaseio.com/"
#define USER_EMAIL "esp32@device.com"
#define USER_PASSWORD "123456"

// ======= DEFINISI PIN =======
#define DHTPIN 5
#define DHTTYPE DHT11
#define FLAME_PIN 35
#define BUZZER_PIN 2
#define MQ_PIN 34
#define RELAY_PUMP 19
#define RELAY_EXHAUST 23

// ======= BATAS DETEKSI =======
#define SUHU_THRESHOLD 30.0
#define GAS_THRESHOLD 100

// ======= OBJEK =======
DHT dht(DHTPIN, DHTTYPE);
FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;
bool signupOK = false;

unsigned long sendDataPrevMillis = 0;
unsigned long timerDelay = 2000;

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

  pinMode(FLAME_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(RELAY_PUMP, OUTPUT);
  pinMode(RELAY_EXHAUST, OUTPUT);

  digitalWrite(RELAY_PUMP, LOW);
  digitalWrite(RELAY_EXHAUST, LOW);
  digitalWrite(BUZZER_PIN, LOW);

  dht.begin();

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(300);
  }
  Serial.println();
  Serial.println("Connected to WiFi");

  config.api_key = API_KEY;
  config.database_url = DATABASE_URL;
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;

  if (Firebase.signUp(&config, &auth, USER_EMAIL, USER_PASSWORD)) {
    Serial.println("Firebase SignUp OK");
    signupOK = true;
  } else {
    Serial.printf("Signup error: %s\n", config.signer.signupError.message.c_str());
    signupOK = true;
  }

  config.token_status_callback = tokenStatusCallback;
  Firebase.begin(&config, &auth);
  Firebase.reconnectWiFi(true);

  Serial.println("Sistem Deteksi Kebakaran Siap");
  delay(2000);
}

void loop() {
  float suhu = dht.readTemperature();
  float kelembapan = dht.readHumidity();

  if (isnan(suhu) || isnan(kelembapan)) {
    Serial.println("Gagal membaca dari sensor DHT!");
    return;
  }

  int statusApi = digitalRead(FLAME_PIN);
  bool apiTerdeteksi = (statusApi == LOW); // LOW = api terdeteksi

  // Baca sensor gas (MQ-2)
  int totalGas = 0;
  for (int i = 0; i < 10; i++) {
    totalGas += analogRead(MQ_PIN);
    delay(5);
  }
  int avgGas = totalGas / 10;

  // === SERIAL MONITOR ===
  Serial.print("Suhu: ");
  Serial.print(suhu);
  Serial.print("°C | Kelembapan: ");
  Serial.print(kelembapan);
  Serial.print("% | Api: ");
  Serial.print(apiTerdeteksi ? "TERDETEKSI" : "AMAN");
  Serial.print(" | Gas: ");
  Serial.println(avgGas);

  // === LOGIKA BUZZER ===
  if (avgGas > 100) {
    digitalWrite(BUZZER_PIN, HIGH); // Gas berbahaya, buzzer nyala
  } else {
    digitalWrite(BUZZER_PIN, LOW);  // Aman, buzzer mati
  }

  // === LOGIKA POMPA & KIPAS ===
  if (suhu > 35 && apiTerdeteksi) {
    digitalWrite(RELAY_PUMP, HIGH);     // Aktifkan waterpump
    digitalWrite(RELAY_EXHAUST, HIGH);  // Aktifkan kipas
    Serial.println("Bahaya: Suhu tinggi & api terdeteksi, pompa & kipas ON");
  } else {
    digitalWrite(RELAY_PUMP, LOW);      // Matikan waterpump
    digitalWrite(RELAY_EXHAUST, LOW);   // Matikan kipas
    Serial.println("Aman: Pompa & kipas dimatikan");
  }

  // === KIRIM KE FIREBASE ===
  if (Firebase.ready() && signupOK && (millis() - sendDataPrevMillis > timerDelay || sendDataPrevMillis == 0)) {
    sendDataPrevMillis = millis();

    Firebase.RTDB.setFloat(&fbdo, "/sensor_data/suhu", suhu);
    Firebase.RTDB.setFloat(&fbdo, "/sensor_data/kelembapan", kelembapan);
    Firebase.RTDB.setBool(&fbdo, "/sensor_data/api_terdeteksi", apiTerdeteksi);
    Firebase.RTDB.setInt(&fbdo, "/sensor_data/gas_value", avgGas);
    Firebase.RTDB.setBool(&fbdo, "/sensor_data/pump_active", digitalRead(RELAY_PUMP));
    Firebase.RTDB.setBool(&fbdo, "/sensor_data/exhaust_active", digitalRead(RELAY_EXHAUST));
    Firebase.RTDB.setBool(&fbdo, "/sensor_data/buzzer_active", digitalRead(BUZZER_PIN));

    Serial.println("Data dikirim ke Firebase");
  }

  delay(2000); // Delay loop 2 detik
}