#include <SoftwareSerial.h>
#include <DHT.h>

SoftwareSerial mySerial(2, 3);

const int pinSensorApi = A1;  // Pin sensor api
const int pinSensorGas = A2;  // Pin sensor gas
const int pinBuzzer = 11;     // Pin buzzer
const int pinDHT = 7;         // Pin sensor DHT
#define DHTTYPE DHT11         // Tipe sensor DHT (DHT11, DHT21, DHT22)
DHT dht(pinDHT, DHTTYPE);
int nilaiSensorApi = 0;
int nilaiSensorGas = 0;
char c;
String data;

void setup() {
  Serial.begin(115200);
  mySerial.begin(115200);
  pinMode(pinSensorApi, INPUT);
  pinMode(pinSensorGas, INPUT);
  pinMode(pinBuzzer, OUTPUT);
  dht.begin();
}

void loop() {
  while (mySerial.available() > 0) {
    delay(10);
    c = mySerial.read();
    data += c;
  }
  
  if (data.length() > 0) {
    Serial.println(data);
    data = "";
  }
  
  nilaiSensorApi = analogRead(pinSensorApi);
  // Inversi nilai sensor api
  int nilaiSensorApiInverted = 1023 - nilaiSensorApi;
  // Serial.print("Nilai Sensor Api: ");
  // Serial.println(nilaiSensorApiInverted);

  nilaiSensorGas = analogRead(pinSensorGas);
  // Serial.print("Nilai Sensor Gas: ");
  // Serial.println(nilaiSensorGas);

  float suhu = dht.readTemperature();
  // Serial.print("Suhu: ");
  // Serial.println(suhu);

  if (suhu > 57) {  // Sesuaikan nilai ambang sesuai kebutuhan
    mySerial.print(" SUHU TINGGI ");
    Serial.println(" SUHU TINGGI ");
    
    // Bunyi buzzer 5 kali
    for (int i = 0; i < 3; i++) {
      digitalWrite(pinBuzzer, HIGH);
      delay(500);  // Buzzer ON selama 500 ms
      digitalWrite(pinBuzzer, LOW);
      delay(500);  // Buzzer OFF selama 500 ms
    }
  }

  if (nilaiSensorApiInverted > 800) {  // Sesuaikan nilai ambang sesuai kebutuhan
    mySerial.print(" API TERDETEKSI ");
    Serial.println(" API TERDETEKSI ");
    
    // Bunyi buzzer 3 kali
    for (int i = 0; i < 3; i++) {
      digitalWrite(pinBuzzer, HIGH);
      delay(500);  // Buzzer ON selama 500 ms
      digitalWrite(pinBuzzer, LOW);
      delay(500);  // Buzzer OFF selama 500 ms
    }
  }

  if (nilaiSensorGas > 100) {  // Sesuaikan nilai ambang sesuai kebutuhan
    mySerial.print(" GAS BERBAHAYA TERDETEKSI ");
    Serial.println(" GAS BERBAHAYA TERDETEKSI ");
    
    // Bunyi buzzer 5 kali
    for (int i = 0; i < 3; i++) {
      digitalWrite(pinBuzzer, HIGH);
      delay(500);  // Buzzer ON selama 500 ms
      digitalWrite(pinBuzzer, LOW);
      delay(500);  // Buzzer OFF selama 500 ms
    }
  }

  // Kirim data sensor ke ESP8266
  data = "Sensor Api: " + String(nilaiSensorApiInverted) + " Sensor Gas: " + String(nilaiSensorGas) + " Suhu: " + String(suhu);
  mySerial.println(data);

  delay(1000);  // Mengirim data setiap 1 detik
}