#define BLYNK_TEMPLATE_ID "TMPL6w-r3Nmek"
#define BLYNK_TEMPLATE_NAME "SMART HOME PROJECT"
#define BLYNK_AUTH_TOKEN "Fz2MXK55AtIjksvwqYvYzDD9vA0Lpt-D"


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>

// Kredensial WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Sensor DHT
#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Potensiometer (simulasi sensor gas dan api)
#define GASPIN 34
#define FLAMEPIN 35

// Pin Relay
#define RELAYPIN 13

// Speaker dan LED
#define SPEAKERPIN 32
#define LED_INDICATOR_PIN 25
#define LED_LAMP1_PIN 26
#define LED_LAMP2_PIN 27

// Pin virtual Blynk
#define VPIN_TEMPERATURE V1
#define VPIN_HUMIDITY V2
#define VPIN_GAS V3
#define VPIN_FLAME V4
#define VPIN_RELAY V5
#define VPIN_LAMP1 V6
#define VPIN_LAMP2 V7

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

    dht.begin();
    pinMode(RELAYPIN, OUTPUT);
    pinMode(GASPIN, INPUT);
    pinMode(FLAMEPIN, INPUT);
    pinMode(SPEAKERPIN, OUTPUT);
    pinMode(LED_INDICATOR_PIN, OUTPUT);
    pinMode(LED_LAMP1_PIN, OUTPUT);
    pinMode(LED_LAMP2_PIN, OUTPUT);

    digitalWrite(RELAYPIN, LOW);
    digitalWrite(SPEAKERPIN, LOW);
    digitalWrite(LED_INDICATOR_PIN, LOW);
    digitalWrite(LED_LAMP1_PIN, LOW);
    digitalWrite(LED_LAMP2_PIN, LOW);

    lcd.init();
    lcd.backlight();
    // Pesan selamat datang dengan teks bergulir
    lcd.setCursor(0, 0);
    lcd.print("Welcome to");
    lcd.setCursor(0, 1);
    lcd.print("Smart Home");
    delay(2000); // Delay untuk menampilkan pesan awal
    for (int i = 0; i < 16; i++) {
        lcd.scrollDisplayLeft(); // Teks bergulir ke kiri
        delay(300); // Delay 0.3 detik antara langkah gulir
    }
    lcd.clear();

    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        lcd.setCursor(0, 0);
        lcd.print("Connecting to");
        lcd.setCursor(0, 1);
        lcd.print("WiFi...");
        delay(1000);
        lcd.scrollDisplayLeft(); // Teks bergulir ke kiri
        delay(300); // Delay 0.3 detik antara langkah gulir
        lcd.clear();
    }
    Serial.println("Connected to WiFi");
    lcd.setCursor(0, 0);
    lcd.print("Connected to WiFi");
    for (int i = 0; i < 16; i++) {
        lcd.scrollDisplayLeft(); // Teks bergulir ke kiri
        delay(300); // Delay 0.3 detik antara langkah gulir
    }
    lcd.clear();

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

BLYNK_WRITE(V6_LAMP1) {
    int pinValue = param.asInt();
    digitalWrite(LED_LAMP1_PIN, pinValue);
}

BLYNK_WRITE(V7_LAMP2) {
    int pinValue = param.asInt();
    digitalWrite(LED_LAMP2_PIN, pinValue);
}

void activateBuzzer() {
    tone(SPEAKERPIN, 1000); // Aktifkan buzzer dengan frekuensi 1000Hz
}

void deactivateBuzzer() {
    noTone(SPEAKERPIN); // Nonaktifkan buzzer
}

void loop() {
    float temperature = dht.readTemperature();
    float humidity = dht.readHumidity();
    int flameValue = analogRead(FLAMEPIN);
    int gasValue = analogRead(GASPIN);

    Blynk.run();
    Blynk.virtualWrite(V1, temperature);
    Blynk.virtualWrite(V2, humidity);
    Blynk.virtualWrite(V3, gasValue);
    Blynk.virtualWrite(V4, flameValue);

    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print("C GAS: ");
    lcd.print(gasValue);

    lcd.setCursor(0, 1);
    lcd.print("Hum: ");
    lcd.print(humidity);
    lcd.print("% Flame: ");
    lcd.print(flameValue);

    delay(1000);
    lcd.clear();

    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.print(" C, Humidity: ");
    Serial.print(humidity);
    Serial.print("%, Gas: ");
    Serial.print(gasValue);
    Serial.print(", Flame: ");
    Serial.println(flameValue);

    if (gasValue > 1000 || flameValue > 1000) {
        digitalWrite(RELAYPIN, HIGH); // Nyalakan relay
        Blynk.virtualWrite(VPIN_RELAY, 1);
        activateBuzzer(); // Aktifkan buzzer
        digitalWrite(LED_INDICATOR_PIN, HIGH); // Nyalakan LED indikator
        lcd.setCursor(0, 0);
        lcd.print("Alert! Gas/Fire");
    } else {
        digitalWrite(RELAYPIN, LOW); // Matikan relay
        Blynk.virtualWrite(VPIN_RELAY, 0);
        deactivateBuzzer(); // Nonaktifkan buzzer
        digitalWrite(LED_INDICATOR_PIN, LOW); // Matikan LED indikator
    }
    delay(2000);
}